Stroller system to transport one or more children

Abstract

This invention provides a stroller system that can be converted from carrying one child to carrying two children without removing a first child carrier from the stroller or adding an adapter to the stroller. When installed on the stroller, the two child carriers are repositioned relative to the stroller's chassis. A self-standing and foldable auxiliary basket can be installed on the stroller in place of one of the child carriers.

Description

Technical Field

[0001] Cross-reference to related applications: This application claims priority to U.S. Patent Application No. 63 / 031,967, filed May 29, 2020, entitled "Single to Double Stroller," U.S. Patent Application No. 63 / 077,938, filed September 14, 2020, entitled "Universal Auxiliary Basket for Stroller," and U.S. Patent Application No. 63 / 126,751, filed December 17, 2020, entitled "Single to Double Stroller Improvements," all of which are incorporated herein by reference. Prior Technology

[0002] Strollers are convenient devices designed for the safe and easy transport of children, and have evolved in recent years in terms of refinement and ease of use. For example, single strollers may offer easy-to-use features for both parents and children, such as adjustable handle height for parents, a foldable frame, a frame that can be fitted with an infant car seat, basket, or child seat, a large base basket, and the ability to switch between a snack tray for children. As families add children, having a stroller that can be converted from carrying a single child to carrying two is very convenient. Summary of the Invention

[0003] The embodiments described herein relate to a stroller system that can be easily converted from carrying a single seated or held child (infant, toddler, or young child) to carrying two seated and / or held children. A second child carrier (infant car seat, bassinet, or child seat) can be added to the stroller without removing the first child carrier. The positioning of these two child carriers can be adjusted relative to the stroller's frame. The stroller system also includes an auxiliary storage basket that can be installed in a seat mount when not used for a child carrier. The auxiliary basket can be folded flat when not in use for storage and can stand upright on its base when detached from the stroller.

[0004] Some embodiments relate to a stroller system capable of transporting one or more children. The stroller system may include a stroller frame comprising a handle, at least one front support leg, and a rear support leg. The stroller system may further include multiple wheels attached to the at least one front support leg and the rear support legs to support the stroller frame; a first pair of seat adjustment assemblies comprising a first pair of seat mounts connected to the stroller frame and configured to translate the first pair of seat mounts along a first direction; and a second pair of seat adjustment assemblies comprising a second pair of seat mounts connected to the stroller frame and configured to translate the second pair of seat mounts along a second direction different from the first direction. The stroller system may further include a first child carrier that can be mounted in the first pair of seat mounts in a forward and rearward orientation.

[0005] Some embodiments relate to methods for converting a stroller from carrying one child to carrying two children. This method may include the following actions: attaching a first child carrier to a first pair of sliding seat mounts connected to a frame of the stroller; and mounting a second child carrier to a second pair of sliding seat mounts. Each of the first and second child carriers may be mounted in the first and second pairs of sliding seat mounts in a forward-facing or rearward-facing orientation.

[0006] Some embodiments relate to a stroller system capable of transporting one or more children. The stroller may include: a foldable frame comprising a handle, at least one front support leg, and two rear support legs; and wheels attached to the at least one front support leg and the two rear support legs to support the foldable frame. The stroller system may further include an adjustable steering knuckle connecting an adjustable grip portion of the handle to a fixed portion of the handle. The adjustable grip portion may include a gripping part for a user to grasp and push the stroller. The adjustable steering knuckle may include a height adjustment actuator to change the height of the gripping part relative to a surface on which the wheels are located when the foldable frame is unfolded. The adjustable steering knuckle may also include a folding actuator to actuate the folding of the foldable frame, and the operation is independent of the first actuator.

[0007] Some embodiments relate to a method of operating a trolley having a foldable frame supported by wheels. This method may include the following actions: actuating a height adjustment actuator located at an adjustable knuckle on one of the trolley's handles to change the height of a grip portion relative to a surface on which the wheels are located when the foldable frame is unfolded, wherein the grip portion is located on an adjustable grip portion of the handle; and actuating a folding actuator at the adjustable knuckle to fold the foldable frame of the trolley, wherein the height adjustment actuator and the folding actuator operate independently of each other.

[0008] Some embodiments relate to a stroller system capable of transporting one or more children. The stroller system may include: a stroller frame including a handle, at least one front support leg, and two rear support legs; and wheels attached to the at least one front support leg and the two rear support legs to support the stroller frame. The stroller system may further include a child seat comprising a seat frame; and a seat hub connected to the seat frame. The seat hub may include a first piece, a pin carrier, and a second piece, wherein: the first piece has a fixed orientation relative to the seat frame and includes one or more slots; the pin carrier is adjacent to the first piece and configured to translate relative to the first piece, and carries at least one pin protruding from the one or more slots; and the second piece has a fixed orientation relative to the stroller frame and has a plurality of reclining latches to receive the one or more pins and provide adjustment and locking of the child seat into two or more reclining positions.

[0009] Some embodiments relate to a stroller capable of transporting one or more children. The stroller may include a stroller frame comprising a handle, at least one front support leg, and rear support legs, wherein the at least one front support leg extends in front of the rear support legs. The stroller may further include a plurality of wheels attached to the at least one front support leg and the rear support legs to support the stroller frame; and a first pair of seat adjustment assemblies comprising a first pair of seat mounts. The first pair of seat adjustment assemblies may be connected to the stroller frame and configured to translate the first pair of seat mounts along a first direction when a child carrier is mounted on the first pair of seat mounts. The stroller may further include a second pair of seat adjustment assemblies comprising a second pair of seat mounts. The second pair of seat adjustment assemblies may be connected to the stroller frame and configured to translate the second pair of seat mounts along a second linear direction different from the first direction.

[0010] Some embodiments relate to a storage basket for a stroller. The storage basket may include a frame; and a basket body attached to the frame. The basket body may include fabric forming sidewalls and a base for the basket; reinforcing members within the fabric to assist in shaping the fabric into the basket having a storage volume; and reversible locking elements to latch and release various portions of the basket body. When the locking elements are latched, the basket body supports the frame above the base of the basket, and the basket retains most of the storage volume; and when the reversible locking elements are released, the fabric is foldable into the frame.

[0011] All combinations of the foregoing concepts and the additional concepts discussed in more detail below (assuming these concepts do not contradict each other) are contemplated as part of the inventive subject matter disclosed herein. In particular, all combinations of the claimed subject matter appearing at the end of this invention are contemplated as part of the inventive subject matter disclosed herein. The terminology expressly used herein, which may also appear in any disclosures included for reference, should be interpreted in a way that best aligns with the meaning of the specific concepts disclosed herein. Simple Explanation of the Diagram

[0012] Those skilled in the art will understand that the various drawings are primarily for illustrative purposes and not intended to limit the scope of the innovative object described herein. The drawings are not necessarily drawn to scale; in some instances, various forms of the innovative object disclosed herein may be enlarged or magnified in the drawings to aid in the understanding of different features. In the drawings, the same reference numerals generally refer to similar features (e.g., functionally similar and / or structurally similar components).

[0013] Figure 1A depicts a stroller system with a first child seat in the lower position.

[0014] Figure 1B depicts the stroller system of Figure 1A with the first child seat in the upper position.

[0015] Figure 1C depicts the trolley system in a folded configuration.

[0016] Figure 2A depicts the stroller system of Figure 1A with a second child seat in the upper position.

[0017] Figure 2B depicts the stroller system of Figure 1A with the second child seat in the lower position.

[0018] Figure 3A depicts the stroller system of Figure 1A, with the infant car seat mounted in the mounting bracket for the first child seat.

[0019] Figure 3B depicts the stroller system of Figure 1A, which has two child support devices mounted on the stroller frame.

[0020] Figure 4A depicts an example of the first seat adjustment assembly.

[0021] Figure 4B depicts an exploded view of the first seat adjustment assembly of Figure 4A.

[0022] Figure 4C depicts a cross-sectional view of one portion of the first seat adjustment assembly of Figure 4A, showing details of the latching mechanism.

[0023] Figure 4D depicts a cross-sectional view of one part of the first seat adjustment assembly of Figure 4A, showing details of the rails inside the grip tube.

[0024] Figure 4E depicts another example of the first seat adjustment assembly.

[0025] Figure 4F depicts a cross-sectional view of one portion of the first seat adjustment assembly in Figure 4E, showing details of the latching mechanism.

[0026] Figure 4G depicts the end of the first seat adjustment assembly of Figures 4A and 4E, which includes a seat mount.

[0027] Figure 5A depicts an example of an infant car seat adapter.

[0028] Figure 5B depicts the infant car seat adapter of Figure 5A installed in the first seat mount of Figure 4G.

[0029] Figure 6A depicts an example of the second seat adjustment assembly.

[0030] Figure 6B depicts a partial exploded view of the second seat adjustment assembly of Figure 6A.

[0031] Figure 6C depicts another example of a second seat adjustment assembly that provides automatic direction selection.

[0032] Figure 6D depicts an exploded view of the second seat adjustment assembly of Figure 6C.

[0033] Figure 6E is a cross-sectional view of the second seat adjustment assembly shown in Figure 6C, which depicts a detail of the steering rod on the first positioning within the second seat mount.

[0034] Figure 6F is a cross-sectional view of the second seat adjustment assembly shown in Figure 6C, which is the direction rod on the second positioning within the second seat mount.

[0035] Figure 6G depicts a cross-sectional view of one portion of the second seat adjustment assembly in Figure 6C, showing details of the latch mechanism in the locking position.

[0036] Figure 6H depicts a cross-sectional view of one portion of the second seat adjustment assembly shown in Figure 6C, illustrating details of the latch mechanism in the unlocked position.

[0037] Figure 7A depicts the adjustable steering knuckle on the trolley handle, which integrates two actuators.

[0038] Figure 7B is an exploded view of the adjusted steering knuckle in Figure 7A.

[0039] Figure 7C shows a further detailed cross-sectional view of the adjusted steering knuckle in Figure 7A.

[0040] Figure 7D depicts an example of a sliding gear that can be used in the adjusting steering knuckle shown in Figure 7A or Figure 7E.

[0041] Figure 7E depicts another example of an adjustable steering knuckle that integrates two actuators.

[0042] Figure 7F is an exploded view of the adjusted steering knuckle as shown in Figure 7E.

[0043] Figure 7G shows a cross-sectional view of the adjusted steering knuckle as shown in Figure 7E.

[0044] Figure 8 depicts an example of a cup holder assembly that can be installed near the adjusting steering knuckle in Figure 7A.

[0045] Figure 9A depicts an example of a child seat frame.

[0046] Figure 9B depicts an example of a child seat frame that includes a footrest (with a foot pedal).

[0047] Figure 9C shows further details of the support plate used in the child seat implementation of Figure 9B.

[0048] Figure 9D depicts an example of a child seat with seat components attached to the child seat frame of Figure 9B.

[0049] Figure 9E is a cross-sectional view of the child support device shown in Figure 9D.

[0050] Figure 10A depicts an example of an adjustable canopy attached to the child seat frame of Figure 9B, wherein the canopy is positioned in the lower position.

[0051] Figure 10B depicts an example of the adjustable canopy of Figure 10A positioned at the upper part of the child seat frame along Figure 9B.

[0052] Figure 10C depicts an example of a roof-mounted wheel hub.

[0053] Figure 10D depicts a cross-section of one portion of the roof hub of Figure 10C.

[0054] Figure 11A is a perspective view depicting an example of a portion of the seat hub of Figure 9A that can be used to attach a child seat frame to the stroller frame.

[0055] Figure 11B is a cross-sectional view of the seat hub portion of Figure 11A in the locked configuration.

[0056] Figure 11C is a cross-sectional view of the seat hub portion of Figure 11A in the unlocked configuration.

[0057] Figure 11D depicts an example of a rotating piece that can be used in the seat hub of Figure 9A to change the tilt of the child seat frame relative to the stroller frame.

[0058] Figure 11E depicts an example of a reclining assembly that can be attached to the seat hub of Figure 9A in a partially exploded view.

[0059] Figure 11F depicts a cross-sectional view of the leaning component of Figure 11E in the unlocked configuration.

[0060] Figure 11G depicts a cross-sectional view of the tilting component in Figure 11E.

[0061] Figure 11H depicts an example of a T-shaped piece that can be used in the leaning assembly of Figure 11E.

[0062] Figure 12A depicts an example of a stroller system with an auxiliary basket mounted in that position on the first child seat.

[0063] Figure 12B illustrates a further detail of the auxiliary basket in Figure 12A.

[0064] Figure 12C is an exploded view of the auxiliary basket in Figure 12A.

[0065] Figure 12D depicts an example of the basket frame attached to the auxiliary basket of Figure 12B.

[0066] Figure 12E illustrates a beading that can be used to assist in supporting the basket body in the basket frame.

[0067] Figure 12F illustrates the basket body of Figure 12B in a folded configuration.

[0068] Figure 12G illustrates an overlapping and locking cover (Flap) that can be used to form the body of the auxiliary basket of Figure 12B.

[0069] Figure 13A depicts further details of the track that can be used to mount the auxiliary basket of Figure 12B.

[0070] Figure 13B depicts an example of an adapter for mounting the auxiliary basket of Figure 12B to a seat mount. The adapter includes a latch actuator and a latch, which is shown in a locked configuration.

[0071] Figure 13C depicts the adapter of Figure 13B in the unlocked configuration.

[0072] Figure 14 depicts another example of the mounting device used for the auxiliary basket of Figure 12B. Implementation

[0073] Currently, converting a single-person to a double-person stroller typically requires the user to first remove the first child seat, adjust the stroller, add the first child seat back to the stroller, and then add the second child seat to reconfigure the stroller from single-person to double-person mode. In many cases, an adapter (which can look messy) must be added to the stroller before installing the second child seat. This stroller lacks a simple way to add the second seat to an existing mounting bracket on the stroller's frame without removing the first child seat. For busy caregivers, each additional step reduces the convenience of using the stroller.

[0074] Figure 1A depicts (in a side elevation view) a stroller system 100 that can be easily converted from carrying a single child to carrying two children by adding a second child seat without removing the first child seat. The adapter is pre-installed on the stroller frame and does not need to be added before installing the second child seat. Furthermore, the stroller system 100 has a clean and aesthetically pleasing appearance. For example, the seats are configured in a stadium-style seating arrangement, with the rear seat higher than the front seat. This provides good visibility for both children. The two seats are mounted along the stroller frame from one or more locations, from the front wheel mount 132 of the stroller handle 110 to the grip area 113.

[0075] The stroller system 100 (also referred to as a "stroller") includes a stroller frame 105 having a handle 110, at least one front support leg 130, and a rear support leg 140 (only the right rear support leg is visible in this side view). One or two front wheels 135 may be attached to one or two wheel mounts 132 connected to one or two front support legs 130. Rear wheels 145 may be attached to each rear support leg 140, and the rear support legs 140 may be located on the left and right sides of the stroller frame 105. For illustrative purposes, the right side of the stroller frame is the side visible in the illustrative view of FIG1A, and is the side seen by a user standing behind the stroller handle 110 and looking at the front wheels 135. A first child seat 120 may be attached to a first pair of seat mounts 125 located on the left and right sides of the stroller 100. A perspective view of one part of the trolley system (with different seating configurations) is shown in Figure 12A.

[0076] The front wheels 135 are rotatable to improve the maneuverability of the stroller 100. For example, the rotation of the front wheels allows the stroller to have a turning radius as small as the distance D between the center of the rear wheel and the center of the rotation axis of the front wheel. According to some embodiments, this distance D can be between 23.5 inches and 27 inches. In some cases, this distance D can be between 25 inches and 32 inches, although D can be even larger in some embodiments. The front-to-back wheelbase (measured between the axles of the front and rear wheels when the front wheel system rotates for forward movement) can be between 22.5 inches and 24.5 inches. In some cases, this front-to-back wheelbase can be between 23 inches and 30 inches, or even larger in some embodiments. The lateral separation between the centerlines of the rear wheels 145 can be between 25 inches and 27 inches. Compared to the rear wheels 145, the front wheels 135 may have the same, smaller, or larger lateral clearance. As shown, the front wheels 135 may have a smaller diameter than the rear wheels 145. For example, the rear wheels 145 may have a full diameter of 8 inches to 12 inches, while the front wheels may have a full diameter of 6 inches to 10 inches. In other embodiments, the front and rear wheels may have the same full diameter.

[0077] In some implementations, the front wheels may not rotate, or a rotation lock may be attached to each wheel mount 132 to lock the attached front wheel 135 in a direction that allows the trolley system 100 to move forward. The trolley may include a brake for one, two, or more of the wheels 135, 145 to prevent and / or stop rotation of the one or more wheels. In some cases, the brake for one or both of the rear wheels 145 may be operated by a single foot pedal 147. In some cases, a single axle may extend between the two rear wheels 145. Alternatively, each rear wheel 145 may be mounted on a separate axle separately attached to the right and left rear support legs 140. The tires for the front and / or rear wheels may be innervated or tubeless. Tubeless tires may contain a solid core (e.g., an elastic foam or rubber core). This latter structure can be used to manufacture wheels that do not require pressurized air and do not burst.

[0078] The trolley frame 105 may be formed of metallic materials and may include polymeric materials in some embodiments. Suitable metals include, but are not limited to, steel, stainless steel, aluminum, aluminum alloys, titanium, titanium alloys, brass, etc. For example, various parts of the trolley frame (e.g., handle 110, front support leg 130, and / or rear support leg 140) may include extruded aluminum tubing. Suitable polymers include, but are not limited to, polypropylene (PP), nylon (PA), polyoxymethylene (POM, also known as acetal), high-density polyethylene (HDPE), polyvinyl chloride (PVC), and acrylonitrile butadiene styrene (ABS). In some cases, additionally or alternatively, composite materials (e.g., fiber-reinforced polymers, carbon fiber composites, glass fiber, etc.) may be used to construct the trolley frame 105.

[0079] In some cases, the trolley frame 105 is foldable for storage to reduce the overall size and volume occupied by the trolley system 100. For folding capability, a handle 110 is pivotally connected to the rear support legs 140 and the front support legs 130. Additionally, a link 150 is pivotally connected to the front support legs 130 and the rear support legs 140. The front support legs 130 and the handle 110 can be locked in a use position or unlocked for folding.

[0080] As shown in Figure 1C, the folding of the trolley frame 105 can be initiated by an actuator located at or near the adjusting knuckle 115 on the trolley handle 110. The folding action can occur around the central region of the trolley between the handle 110 and the front outriggers 130, such as at or near the rear outrigger pivot 142. In some cases, the folding action can occur directly in front of the rear outrigger pivot 142 at the frame hinge 127. Regardless of where the folding occurs, the folding action can lower the handle 110 to become parallel or nearly parallel to the rear outriggers 140 (e.g., within 10 degrees). Furthermore, the front outriggers 130 can rotate rearward toward the rear outriggers 140, thereby becoming parallel or nearly parallel to the rear outriggers 140 (e.g., within 30 degrees). In some cases, when the trolley frame is folded, the handle 110 can be within 15 to 40 degrees of the front outriggers 130. In the folded configuration, the trolley 100 can stand upright on some combination of the rear wheels 145, the front wheels 135, and the trolley grips 113.

[0081] The trolley handle 110 may include several portions extending rearward from the front outrigger 130. The trolley handle 110 may include a fixed handle portion 114, an adjustable handle portion 112, and a grip portion 113. The fixed handle portion 114 may extend prior to the adjustable steering knuckle 115 and may include extruded tubing located on the left and right sides of the trolley. In some embodiments, the fixed handle portion 114 may be connected to a lockable frame hinge 127 (which connects to the front outrigger 130 and is used for folding the trolley frame 105). Depending on the material used, the maximum diameter of the tubing forming the fixed handle portion 114 may be between 1 inch and 2.5 inches. The tubing may be circular or non-circular.

[0082] The adjustable grip portion 112 may include a gripping portion 113 and extend behind the adjusting steering knuckle 115. In some cases, the adjustable grip portion 112 may be formed from a single piece of tubing or an extruded tubing that is bent or generally formed in a U-shape (see FIG. 12A). In some embodiments, the adjustable grip portion 112 may be formed from multiple pieces joined together. For example, a height adjustment actuator located at or near the adjusting steering knuckle 115 may be used to raise or lower the gripping portion 113 relative to the surface on which the wheels of the cart are located. For example, the adjustable grip portion 112 may be pivoted and locked about the adjusting steering knuckle 115 to fix the height of the gripping portion 113 at two or more different heights H relative to the surface on which the wheels of the cart are located. The gripping portion 113 may include a cushioning body (e.g., a foam, rubber, artificial leather, or other covering) attached to a portion of the adjustable grip portion 112.

[0083] The front support leg 130 may be formed of metal, polymer, composite material, or a combination thereof. In some embodiments, the higher portion of the front support leg is formed of an extruded tube, and the lower portion of the front support leg is formed of a polymer or composite material. In some cases, the lower portion of the front support leg 130 may be coated or covered with a polymer shield. If formed as a connecting frame or individual component, the front support leg may have a U-shape (see FIG. 12A) and be connected to handles 110 on the left and right side faces of the trolley frame 105. For example, a single front support leg 130 in the form of a U-shape, triangle, or rectangle may be attached to a frame hinge 127 located on the left and right side faces of the trolley frame. In some cases, the trolley may include a pair of front support legs 130 and a bar that engages the front support legs.

[0084] One or two front wheel mounts 132 may be attached to one or two front landing gears 130. For example, when the front landing gear system is formed as a joint frame or individual piece, a single front wheel may be located at the lower center of the front landing gear 130. When using two front wheel mounts, they may be attached to the left and right sides of the front landing gear when the front landing gear system is formed as a joint frame or individual piece, or they may be attached to separate front landing gears located on the left and right sides of the trolley frame. The wheel mounts 132 may comprise metal and are welded and / or latched to the front landing gears 130, for example, with machine screws. In some cases, the front wheel mounts 132 may be covered with a polymer shield or may be partially formed of polymer or composite material. Each of the front wheels 135 may be attached to a mounting assembly (e.g., a fork-shaped mount to hold the wheel; and a vertical axle inserted into the front wheel mount 132) to allow rotation of the front wheel.

[0085] In some embodiments, links 150 (one on each side of the trolley) may be connected between the front outriggers 130 and the rear outriggers 140 of the trolley. When the trolley frame is switched between an unfolded configuration and a folded configuration, the links 150 may guide the relative movement of the front outriggers 130 and the rear outriggers 140. In some examples, when the rear wheels 145 encounter a bump in the terrain, the links 150 may allow a limited amount of pivoting of the rear outriggers 140 and absorb some energy. The links 150 may include a spring, cylinder, fluid cylinder, elastic material, or a combination thereof, which can absorb, recover, and / or dissipate energy. In other embodiments, the links 150 may or may not dampen vibrations. For example, the links 150 may be rigid links. In some of these embodiments, such shock-absorbing components (e.g., springs, cylinders, fluid cylinders, elastic materials or combinations thereof) may be attached to the front wheel mount 132 and / or rear landing gear 140.

[0086] When the trolley frame 105 is in an unfolded configuration, a significant space 170 may be provided between the front support leg 130 and the rear support leg 140. This space may accommodate at least one portion of the base basket 160 for carrying items (clothing, sundries, toys, etc.). The basket 160 may include a fabric 164 suspended from a solid frame 162. The frame 162 may be at least partially covered by the fabric 164 of the basket. In some cases, the connecting rods 150 may be attached as part of the basket frame 162, and the basket fabric 164 may extend upward over the connecting rods. In some implementations, one or more reinforcing members (e.g., polymer panels, composite panels, etc.) may be used to form the bottom side of the basket 160. For example, the reinforcing members may be sewn into the fabric 164 forming the bottom of the basket 160.

[0087] The first child seat 120 may be attached to two adjustable seat mounts 125 located on the left and right sides of the stroller frame 105. Each seat mount 125 may include a receptacle for receiving a mating structure attached to the first child seat 120 and is translatable relative to the stroller frame 105. In other examples, each seat mount 125 may include a bayonet that receives in one of the receptacles of the child seat. These receptacles of the first seat mounts 125 may not rotate or rotate relative to the stroller frame 105. Instead, for example, the first seat mounts 125 may be translated and repositioned along the stroller handle 110 in a first linear direction (which is substantially parallel to the central axis of the tube forming the fixed handle portion 114). The translation of the first seat mounts 125 and the first child seat 120 will be described in more detail below. In some cases, the first seat mounting component 125 may not be moved and may be fixed to the trolley frame 105.

[0088] For user convenience, the trolley system 100 may further include a cup holder 116, which can be attached to the trolley frame 105. This cup holder can support any of the following: a cup, can, bottle, or mug containing a beverage. The cup holder 116 may be located at or near the adjustment knuckle 115 (e.g., within 5 inches). In some cases, the cup holder 116 may rotate or pivot relative to the trolley frame 105 so that it can rotate or pivot away when the trolley frame 105 is folded and the handle 110 is folded toward the rear support leg 140. The cup holder 116 can be easily attached to and detached from the trolley frame using, for example, a friction fitting on the cup holder 116 and a mating socket on the trolley frame 105, but other quick-release mechanisms (e.g., snap-fit ​​connections, latches, and features fitted into the latches) may also be used.

[0089] Figure 1B depicts the stroller system 100 of Figure 1A, wherein a first child seat 120 is moved to an upper position on the stroller frame 105. The first child seat has been moved from a lower position (in front of the rear support pivot 142 in this example of Figure 1A) to the rear of the rear support pivot and further upwards to the stroller handle 110. This translation of the first child seat may result in a closer connection between the stroller user and the child in the first child seat, especially if the first child seat is rear-facing, or if a basket or infant car seat is installed in such a first seat mount 125.

[0090] The repositioning and locking of the first seat mounts 125 can be controlled by a first seat adjustment handle 118 located behind the seat mounts and further up to a handle 110. This position of the first seat adjustment handle 118 is advantageous for several reasons. First, it allows for repositioning of the first seat mounts 125 if they are attached to them, without removing the first child seat 120 or child carrier (and child). Furthermore, the handles 118 are more easily accessible to the stroller user from the rear of the stroller. Additionally, the user's hands and fingers are always on one side of the (rear) rear outrigger pivot 142, thus avoiding any entanglement with the pivot, although the first seat mounts 125 can be moved to the opposite side of the rear outrigger pivot 142, moving from one side of the pivot 142 to the other, or vice versa, when moving from the lower position in FIG. 1A to the upper position in FIG. 1B.

[0091] Figure 2A depicts the stroller system 100 of Figure 1A, wherein a second child seat 220 is attached to a second seat mount 225 on a stroller frame 105. For simplicity, the first child seat is removed from the first seat mount 125; however, the stroller system 100 may have both a first child seat 120 and a second child seat 220 installed simultaneously. An advantageous feature of the stroller system 100 is that the first child seat 120 (and the child) can be maintained on the stroller frame 105, while the second child seat 220 (and the child) is secured to the second seat mount 225. In other words, the second child seat 220 or second child carrier can be installed on and removed from the second seat mount 225 without removing the first child seat 120 or first child carrier installed in the first seat mount 125, and vice versa. The first child seat 120 or the first child carrier can be installed in and removed from the first seat mount 125 without removing the second child seat 220 or the second child carrier installed in the second seat mount 225.

[0092] The second seat mounts 225 can be rigidly secured to the stroller frame (e.g., by rivets, screws, nuts and bolts, welding, pins, keys, or combinations thereof). In some cases, the second seat mounts 225 may be attached to the stroller frame during the manufacture of the stroller, or may be attached and removed by the user after manufacture. In this regard, the second seat mounts 225 are not adapters added for installing a second child seat. Rather, they are permanent parts of the stroller at assembly. In some cases, the second seat mounts 225 may be detachably attached to the stroller frame so that the user may easily remove the second seat mounts if needed. The second seat mounts 225 may also be translated about the stroller frame 105 (e.g., along the same direction as the first seat mounts 125, or within 30 degrees of that translational direction of the first seat mounts). In some cases, the second seat mounts may translate along a second direction different from the first direction along which the first seat mounts 125 are translated. For example, the second seat mounts 225 may translate along a second direction 212 or axis that is skewed or orthogonal to the first direction 211 or axis along which the first seat mounts 125 are translated. The second direction may have a value in the range of 30 to 90 degrees different from the first direction. In the illustrative figure of FIG2A, the second seat mounts 225 translate along a second direction 212 or axis that is nearly orthogonal to the first direction 211 or axis along which the first seat mounts 125 are translated.

[0093] To achieve a compact size, the first seat mount 125 and the second seat mount 225 may be attached to one or more portions of the trolley frame extending from the front outrigger 130 to the grip portion 113 of the trolley handle 110. The portions of the trolley frame to which the seat mounts are attached may be linear or substantially linear. The adjusting steering knuckle 115 may also be mounted along these same portions of the trolley frame. Although these portions (including the portions of the front outrigger and grip) are depicted as linear and continuous in FIG. 2A, they may be linear within 10 degrees (e.g., slightly curved, bent, or disengaged within 10 degrees parallel to each other).

[0094] When not used to support the second child seat 220, the second seat mounts 225 can be at least partially lateralized into the base space 170 between the front support leg 130 and the rear support leg 140, or into a storage space in the lower area of ​​the stroller for storage. In some cases, the second seat mounts 225 can be completely lateralized into the base space between the front support leg and the rear support leg, or into the storage space, such that the second seat mounts are invisible or at least partially hidden when viewed from the side of the stroller as seen in FIG. 1A. In some cases, the second seat mounts can be lateralized into the basket 160, and / or into a recessed pocket of fabric formed in or along the side of the basket 160.

[0095] Like the first seat mount 125 and the first child seat 120, the second seat mount 225 and the second child seat 220 can be repositioned and locked relative to the stroller frame 105 at two or more locations. Figure 2A depicts a stroller system 100 with the second seat mount 225 (and the second child seat 220) in a raised position. Figure 2B depicts a stroller system 100 with the second seat mount and the second child seat in a lowered position. The raised position provides better visibility for the second child, a greater distance between the two children in the first and second child seats, and improves airflow. The lowered position increases the sense of closeness between the two children in the first and second child seats, reduces the overall size of the stroller system for better maneuverability in a limited area, and improves the stability of the stroller system.

[0096] Other child carriers or baskets may be mounted on the first seat mount 125 and the second seat mount 225. Figure 3A depicts the stroller system 100 of Figure 1A with an infant car seat 310 mounted on the first seat mount 125 (but not the first child seat 120). In some cases, an infant car seat adapter 320 may be used to adapt each seat mount 125 to a mounting fastener on the infant car seat 310. The infant car seat can be slid along the stroller handle 110 using the first seat adjustment handle 118.

[0097] Figure 3B depicts the stroller system 100 of Figure 1A with two child carriers mounted on the stroller frame. A first child seat 120 is rear-mounted in the first seat mount 125, and a basket 330 is mounted in the second seat mount 225. Another example of a child carrier is a basket 330 in which a child lies flat, as shown in Figure 3B. Either the child carrier or the basket can be mounted in the second seat mount 225, while the child carrier or basket is mounted in the first seat mount 125. Therefore, this stroller system offers a significant number of configurations for child carriers and baskets.

[0098] Figure 4A depicts an example of a first seat adjustment assembly 400, which can be used to reposition and lock the first seat mounts 125 to change the positioning of the child seat or other child carrier when installed on the seat mounts. Two seat adjustment assemblies may be present on the left and right sides of the stroller frame 105. Figure 4B depicts an exploded view of the first seat adjustment assembly of Figure 4A.

[0099] According to some embodiments, the first seat adjustment assembly 400 may include a first seat adjustment handle 118, an adjustment actuator 410, a latch 412, a compression spring 416, and a track follower 420. The handle 110 may include at least one track, and the seat adjustment assembly 400 may include a track follower 420 that engages with the track(e). Each track may define a protrusion or a recess (i.e., an internal or external track). Each track follower 420 may define another protrusion 434 and a recess engaging the protrusion, or a recess 436 of the track (refer to FIG. 4D). The track and / or the track follower may have a T-shaped, triangular, circular, or other cross-sectional shape. The protrusion may have an enlarged portion and a narrowed portion, wherein the narrowed portion has a smaller cross-sectional dimension than the enlarged portion. In a preferred embodiment, the track defines a recess, and the track follower defines a protrusion receiving in the recess.

[0100] The seat adjustment handle 118 may be formed of metal, polymer, composite material, or some combination thereof. A first seat mount 125 may be attached to or integrally formed with the first seat adjustment handle 118 and may be separated from the adjustment actuator by a handle arm 425. The length of the handle arm may be between 2 inches and 10 inches. The rear portion of the adjustment handle 118 may include a sheath 405 that extends partially or completely around the tubing on which the first seat adjustment assembly 400 is mounted. The seat adjustment handle 118 and the first seat mount may be attached to a track follower 420, which facilitates guiding the first seat adjustment assembly 400 along the handle 110 of the trolley.

[0101] Figure 4C depicts a cross-sectional view of a portion of the first seat adjustment assembly 400 and shows details of the latching mechanism. An adjustment actuator 410 protrudes through an opening in the seat adjustment handle 118. The inner surface of the adjustment actuator 410 contacts a first end of a latch 412, which is biased outward toward the adjustment actuator 410 by a compression spring 416. When the first end of the latch is biased outward, the opposing latch end 414 of the latch can rotate into and engage with a stop 437. The latch 412 can rotate about an axle 422 fixed to a track follower 420. The stop 437 can be a slot or hole formed in the tube of the trolley handle 110. A plurality of stops 437 may be present along the trolley handle to lock the first seat mounts 125 at a plurality of different positions along the fixed grip portion 114 of the trolley handle 110.

[0102] Pressing against the adjustment actuator 410 rotates the latch end 414 of the latch 412 out of the stop 437 and allows the seat adjustment handle 118 to translate along the trolley handle. In some embodiments, the latch end 414 of the latch may include an inclined surface 415 that allows the first seat adjustment handle 118 and the first seat mount 125 to pull up the trolley handle 110 without pressing down the adjustment actuator 410. Translation of the seat adjustment handle 118 may slide the track follower 420 along the track. In some embodiments, a roller bearing or wheel or the trolley handle guided by the track may be used instead of the track follower.

[0103] Figure 4D depicts a cross-sectional view of a portion of the first seat adjustment assembly 400 of Figure 4A, showing details of the track 435 inside the grip tube 430. The grip tube 430 may form at least a portion of the fixed grip portion 114 of the trolley. According to some embodiments, the grip tube may be extruded aluminum or aluminum alloy tubing, but tubing formed from other materials and by other processes may also be used. The grip tube 430 may include an internal cavity 432 defined within the space of one of the outermost walls 438 of the grip tube 430. In the exemplary example of Figure 4D, the track 435 for the track follower 420 is formed inside the grip tube. The track 435 inside the grip tube improves the appearance of the trolley.

[0104] Figure 4E depicts another example of the first seat adjustment assembly 401. In this example, the adjustment actuator 410 is positioned below the fixed handle portion 114 and the seat adjustment handle 118 of the trolley. This position is more ergonomically convenient for the user. The remaining parts of the first seat adjustment assembly 401 can be similar to the seat adjustment assembly 400 of Figure 4A, and their description need not be repeated. As illustrated in Figure 4A, the handle arm 425 can cover at least one portion of the track follower 420 and the track 435 formed in the handle tube 430 to further reduce or eliminate the chance of fingers getting stuck in the track.

[0105] Figure 4F depicts a cross-sectional view of a portion of the first seat adjustment assembly 401 of Figure 4E, showing details of the latching mechanism. In this implementation, the adjustment actuator is configured to form a mechanically advantageous lever that presses down the first end 411 of the latch 412. For example, the adjustment actuator 410 may pivot about a pin in an arm 417 located on either side of the actuator 410. Such pins (not visible in this illustration) may extend into holes in the first seat adjustment grip 118. An internal protrusion 413 presses down the first end 411 of the latch 412 to rotate the latch end 414 out of the stop 437, as shown in this illustration. The lever-operated adjustment actuator 410 provides a mechanical advantage by reducing the force required to release the latch end 414 of the latch 412 from the stop 437. A compression spring biases the latch 412 and the actuator 410 into a locked position.

[0106] Figure 4G depicts further details of a first seat mount 125 that may be located at the end of a first seat adjustment assembly 400 or assembly 401. The first seat mount 125 may be formed of metal, polymer, composite material, or some combination thereof. The first seat mount may include a seat mount socket 442 and a stop 444. In this exemplary embodiment, the socket 442 includes a cavity into which a mating structure can be inserted. This mating structure may be attached to the first child seat, other child carrier, or basket. The mating structure (e.g., the insert shown in Figure 6C) may include a releasable latch that engages with the stop 444 when the first child carrier or basket is installed to prevent the attached child carrier or basket from accidentally detaching from the stroller frame 105.

[0107] In other embodiments, the first seat mounting socket 442 may not include a cavity, but may be formed as a plug (which may be referred to as a latch). This plug may be inserted into a cavity in a mating structure attached to a child carrier or basket.

[0108] Figure 5A depicts an example of a baby car seat adapter 500 that can be used to adapt first and / or second seat mounts 125, 225 to accept one or two baby car seats. The adapter may be formed of a polymer, metal, composite material, or some combination thereof. The adapter 500 may include a seat mount structure 510; a baby car seat structure 520; and a support portion 515 connecting the seat mount structure 510 and the baby car seat structure 520. In this exemplary example, the seat mount structure 510 includes an insert with an adapter latch 530, and the baby car seat structure 520 also includes an insert. For example, each of these inserts may be inserted into a cavity on an opposing socket of the first seat mount 125 and the baby car seat 310 (see Figure 3A). In an alternative embodiment, one or both of the seat mount structure 510 and the baby car seat structure 520 may include a cavity for accepting an insert rather than being formed as an insert.

[0109] Figure 5B depicts the infant car seat adapter 500 of Figure 5A mounted in the first seat mount 125 of Figure 4G. An adapter latch 530 engages a stop 444 of the first seat mount 125 to prevent the adapter from being accidentally released from the seat mount. An actuator on the same or opposite side of the adapter 500 can be used to release the latch. An example of this actuator is illustrated below with reference to Figures 11B and 11C. To improve the strength and stability of the infant car seat 310, the adapter may include a support 515 extending along one edge of the seat mount 125. The support 515 may also allow the infant car seat structure 520 to deviate from the central positioning of the seat mount structure 510 (e.g., to move the infant car seat closer to the stroller user). In some cases, the support 515 may include a recess 517 to receive a plunger therefrom when the infant car seat mounting assembly is mounted on the adapter 500. The plunger locks the infant car seat to the adapter 500. In some cases, the infant car seat structure 520 may be integrated onto the seat mounting structure 510 and may not include the support member 515.

[0110] Figure 6A depicts an example of a second seat adjustment assembly 600 that can be used to mount a second child carrier or basket to a stroller frame 105. Figure 6B separately depicts the track follower 620 and pivot 615 of the second seat adjustment assembly of Figure 6A. The second seat adjustment assembly 600 may include a second seat mount 225, an adjustment actuator 610, a pivot 615, and a track follower 620. The track follower may be attached to a mounting plate 138 attached to the front support leg 130 of the stroller. For example, the mounting plate 138 may be welded, latched, or riveted to the front support leg 130, and the track follower may be welded, latched, or riveted to the mounting plate. The track follower 620 may be formed of metal, polymer, composite material, or some combination thereof, and includes a groove 622 that engages with and guides a rail 612 on the pivot 615, allowing the pivot to slide along the track follower. In other implementations, roller bearings or rollers may be used instead of rails 612 to translate the pivot 615 and the second seat mount 225 relative to the rail follower 620.

[0111] The pivot 615 may be formed of a polymer, metal, composite material, or a combination thereof. In some cases, the second seat mount 225 may be integrally formed with the pivot 615 (e.g., molded or cast as a single piece). In other cases, the second seat mount may be attached to the pivot 615 (e.g., by welding, riveting, and / or screws). The pivot 615 may include a plurality of stops or stops in an inner surface between the rails 612 that receive a latch 624 on the rail follower to lock the positioning of the pivot relative to the rail follower 620 in any of a plurality of different positions. One of these positions may be a storage position such that the second seat mount 225 is partially or completely retracted into the space 170 between the front support leg 130 and the rear support leg 140 of the trolley (e.g., into the basket 160).

[0112] The latch 624 may be formed into the track follower together with the groove 626, and a portion of the curved cantilever of the track follower below the latch 624 and the groove 626 may be removed. The adjusting actuator 610 may lift the array of pins in the tugs or stops on the pivot 615 or the rod or link that travels across the tugs or stops to push the latch 624 out of the tugs or stops and allow the pivot 615 to translate relative to the track follower 620.

[0113] Figures 6C and 6D depict an example of a second seat adjustment assembly 601 that provides automatic orientation selection for the second child seat or child carrier. Figure 6D depicts an exploded view of the second seat adjustment assembly 601. The illustrative diagram in Figure 6C also shows a portion of the second child seat 220 inserted into the second seat mount 225.

[0114] The second seat adjustment assembly 601 may include a steering lever 640 that automatically switches between two or more positions when the pivot 615 is adjusted along the track follower 620. The switching position of the steering lever 640 can determine which orientations of the second child seat 220 are permitted. Only one steering lever 640 may be present in one of a pair of seat mounts 225, or the steering lever may be attached to both of the pair of seat mounts. In some cases, using this steering lever to limit the orientation of the second child seat and / or the first child seat can improve the stability and / or maneuverability of the stroller system 100.

[0115] The second seat adjustment assembly 601 may include a second seat mount 225, an adjustment actuator 610, a compression spring 614, a steering rod 640, a torsion spring 642, a pivot 615, a cover 616, and a track follower 620. The track follower may be attached to a mounting piece 138 attached to the front support leg 130 of the trolley. The track follower 620 and the pivot 615 may be formed of metal, polymer, composite material, or some combination thereof. The track follower 620 may include a groove 622 that engages with and guides a rail 612 on the pivot 615, allowing the pivot to slide along the track follower. In other embodiments, roller bearings or rollers may be used instead of rails 612 to translate the pivot 615 and the second seat mount 225 relative to the track follower 620.

[0116] Figure 6D depicts a second seat mount 225 integrally formed with the pivot 615 (e.g., molded or cast as a single piece as shown in Figure 6D). In other cases, the second seat mount may be attached to the pivot 615 (e.g., by welding, riveting, and / or screws). During assembly, the seat mount 225 may be positioned directly on the track follower 620 such that the total thickness of the seat mount 225, pivot 615, and track follower 620 does not exceed 20 mm, thereby providing an elongated profile. In this embodiment of Figure 6D, the track follower 620 includes a plurality of latches 623 to receive a latching protrusion 611 of one of the adjustment actuators 610 to lock the pivot 615 in this positioning relative to the track follower 620. In some cases, when the second seat mount 225 is partially or fully retracted into the space 170 between the front support leg 130 and the rear support leg 140 of the trolley (e.g., into the basket 160), the latch protrusion 611 may not engage the tug in the track follower 620.

[0117] To achieve automatic direction selection, the steering lever 640 can interact with features on the second child carrier. For example, and referring to FIG. 6C, the seat hub 920 on the second child carrier may include a seat hub insert 922 having one or more insert recesses 925. These insert recesses accept the steering lever 640 (when it is switched between two or more positions). In the case illustrated in FIG. 6C, the insert recesses 925 are shaped to adjust the steering lever 640 in two positions: tilting backward or forward toward the rear of the stroller, as shown, assuming the child carrier is properly oriented. When tilted backward as shown in FIG. 6C, the insert recesses 925 allow the second child carrier to be mounted in only one direction (e.g., the child is rear-facing in the child seat). This orientation is allowed when the second seat mount 225 is positioned in one or more rear-facing positions along the track follower 620. When the steering lever 640 is tilted forward, it is not permissible to install the second child seat 220 such that the child faces backward. Instead, the second child seat 220 must be rotated 180 degrees to install, thereby moving the center of gravity of the second child toward the rear of the stroller system 100. This orientation improves the stability and / or maneuverability of the stroller system.

[0118] Figure 6E is a cross-sectional view of the second seat adjustment assembly 601 in Figure 6C. This illustrative figure shows details of the steering rod in a first positioning (rearward tilt) within the second seat mount 225. When the second seat mount assembly 601 is engaged in one or more rearward positions, the foot 645 of the steering rod 640 can engage with the rail follower 620, thereby rotating the steering rod 640 to a rearward position against the torsion spring 642. When the second seat mount assembly 601 is engaged in one or more forward positions, the foot 645 of the steering rod 640 can disengage from the rail follower 620, thereby allowing the torsion spring 642 to rotate the steering rod 640 to a forward position, as shown in Figure 6F.

[0119] In some cases, the steering lever 640 can be switched to a neutral orientation, a third orientation. This steering lever can be rotated to this neutral orientation instead of the forward positioning shown in Figure 6F. This neutral orientation can be used to position the steering lever 640 along the axis of symmetry of the second seat mount 225 (e.g., vertically aligned vertically at the center of the second seat mount 225). In this case, the insert recess can extend to the center of the seat hub insert 922, or an additional recess can be added at the center of the seat hub insert. This neutral orientation allows the second child seat to be mounted in both forward and rearward orientations. To avoid interfering with any latching mechanisms on the seat hub insert 922 (e.g., latches 530 and stoppers 444 in Figure 5B), the steering lever 640 can be shortened or positioned on the side of the second seat mount 225 opposite to these latching mechanisms.

[0120] Figure 6G depicts a cross-sectional view of a portion of the second seat adjustment assembly 601 of Figure 6C, showing details of the adjustment actuator 610 and its latch protrusion 611 in the locked position. When positioned on the tug 623 in the track follower 620, the compression spring 614 pushes the latch protrusion 611 of the adjustment actuator 610 into the tug 623 or tug to lock the pivot 615 and the second seat mount 225 in this position relative to the track follower 620. Pushing the adjustment actuator 610 rotates the actuator 610 about a fulcrum 613 formed in the adjustment actuator 610, thereby raising the latch protrusion 611 out of the tug 623 to the unlocked position, as shown in Figure 6H. The fulcrum 613 can pivot on the surface of the pivot 615.

[0121] Figures 7A and 7C depict details of an adjustable steering knuckle 115 that integrates a first actuator to fold the trolley frame 105 and a second actuator to adjust the height of the adjustable grip portion 112 and the grip portion 113. This adjustable steering knuckle provides a hinge or pivoting function for the adjustable grip portion 112 relative to the fixed grip portion 114. The trolley may have an adjustable steering knuckle located on one side of the trolley frame (e.g., at the junction between the adjustable grip portion 112 and the fixed grip portion 114). In some cases, the trolley may have two adjustable steering knuckles, one on the left side of the trolley frame and one on the right side of the trolley frame. Figure 7B is an exploded view of the adjustable steering knuckle of Figure 7A, and Figure 7C is a cross-sectional view showing further details of the adjustable steering knuckle of Figure 7A.

[0122] Adjusting the steering knuckle 115 may include a folding trigger 712 and a height adjustment actuator button 730, as shown in FIG7A. The folding trigger 712 can be pulled by the user to actuate the folding of the trolley frame 105. The height adjustment actuator button 730 can be pushed or pressed to allow the adjustable grip portion 112 to pivot (and height adjust) relative to the fixed grip portion 114. The pivoting of the adjustable grip portion 112 can raise and lower the grip portion 113 of the trolley's handle 110 (see FIG1A).

[0123] The components of the adjusting steering knuckle 115, the height adjustment actuator, and the folding actuator are depicted in Figure 7B. Further components of the adjusting steering knuckle 115 may include a first steering knuckle housing 740, a sliding gear 732, a compression spring 734, a second steering knuckle housing 750, and a cover 755. Each of the folding trigger actuator 710, the first steering knuckle housing 740, the sliding gear 732, the second steering knuckle housing 750, and the cover 755 may be formed of metal, polymer, composite material, or a combination thereof. The height adjustment actuator may include a height adjustment button 730, a sliding gear 732, a compression spring 734, and a shaped tooth 736 located within the adjusting steering knuckle. The folding actuator may include a folding trigger actuator 710, a folding trigger 712, a cable stop 714, a roller 722, and a cable 720.

[0124] A screw or shaft (not shown in Figure 7B) may pass through the center of the folding trigger actuator 710 (on which a folding trigger 712 may be formed), the second steering knuckle housing 750, the sliding gear 732, and the first steering knuckle housing 740 to secure these components together and allow rotation or pivoting of the first steering knuckle housing 740 relative to the second steering knuckle housing 750. A first steering knuckle housing extension 742 may secure the first steering knuckle housing 740 to the adjustable grip portion 112, while a second steering knuckle housing extension 752 may secure the second steering knuckle housing 750 to the fixed grip portion 114.

[0125] The interior of the first steering knuckle housing 740 and the second steering knuckle housing 750 may each have shaped teeth 736 that engage with the teeth on the sliding gear 732. The sliding gear 732 is movable within the cavity formed by the first steering knuckle housing 740 and the second steering knuckle housing 750 (towards the left and right sides of the trolley). A compression spring 734 may be located in the cavity to bias the sliding gear 732 into position where its teeth engage with the shaped teeth in both the first steering knuckle housing 740 and the second steering knuckle housing 750, thereby locking the first steering knuckle housing 740 and the adjustable grip portion 112 relative to the second steering knuckle housing 750 and the fixed grip portion 114. When the height adjustment actuator button 730 is pressed down, a foot or other protrusion 731 on the actuator may push the sliding gear 732 against the compression spring 734, thereby releasing the teeth on the sliding gear from engagement with the shaped teeth 736 on the interior of the first steering knuckle housing 740. This release of the engaged teeth allows the first steering knuckle housing 740 and the adjustable grip portion 112 to pivot in different orientations relative to the second steering knuckle housing 750 and the fixed grip portion 114. Release of the height adjustment actuator button 730 re-engages the teeth of the sliding gear 732 with the shaped teeth 736 on the interior of the first steering knuckle housing 740, thereby locking the orientation of the adjustable grip portion 112. The use of the sliding gear 732, as illustrated, allows the adjustable steering knuckle 115 to be compact and narrow along the trolley frame (e.g., not exceeding 1.5 times the width of the fixed grip portion 114).

[0126] The second steering knuckle housing 750 may include a roller 722 on which a cable 720 is translatably mounted. During assembly of the adjusting steering knuckle 115, at least a portion of the roller 722 and cable 720 may be located under the housing 755. The end of the cable 720 may be attached to a cable stop 714 located on the folding trigger actuator 710. For example, a cable pin 724 may be inserted into the cable stop 714 as shown in FIG. 7C. When the folding trigger 712 is pulled, the folding trigger actuator 710 rotates and pulls the cable 720. This cable may be connected to a mechanism to unlock the frame hinge 127, thereby allowing the trolley frame 105 to fold. Thus, the folding trigger 712 can be neatly and compactly integrated with the adjusting steering knuckle 115 by using the same pivot axis for each.

[0127] Figure 7D depicts an example of a sliding gear 732 that may be used in the adjustable steering knuckle of Figure 7A or Figure 7E. The sliding gear may be formed of a metal (e.g., brass, aluminum, or stainless steel), although other metals may also be used. In some embodiments, additionally or alternatively, the sliding gear 732 may be formed of a polymer or composite material. The sliding gear 732 may include teeth on its periphery and / or on one or both sidewalls 733 of the sliding gear.

[0128] Figure 7E depicts another example of an adjusting knuckle 701 integrating two actuators for handle height adjustment and folding of the trolley frame. This exemplary example includes a cup holder mount 810 integrated with the adjusting knuckle 701. For example, the cup holder mount 810 may be formed from the same material (cast, machined, or molded) and is part of the adjusting knuckle 701. For example, in the embodiments of Figures 7A or 7E, the cup holder mount 810 may be formed as part of a first knuckle housing 740, a second knuckle housing 750, or a cover 755. The integration of the folding actuator and the height adjustment actuator into the adjusting knuckle allows the cup holder mount 810 to be positioned closer to the knuckle and in a more convenient position closer to the user, rather than lower on the trolley frame. The cup holder 820 (shown in Figure 8) that holds a cup, jar or bottle can slide or snap onto the cup holder mount 810, or be fixed thereto.

[0129] Figure 7F is an exploded view of the adjusting steering knuckle 701 of Figure 7E. Similar parts present in this embodiment of Figure 7B are labeled with the same reference numerals and will not be described further. In this embodiment, the cup holder mount 810 is integrally formed as a single piece with the cover 755. The cover 755 and the cup holder mount 810 can be attached to the second steering knuckle housing 750 (e.g., snapped onto it). When assembling the adjusting steering knuckle 701, the cable rod 723 and the rod stop 715 can be located within the cover 755, and the rollers for the cable 720 can be omitted.

[0130] Figure 7G shows a further detailed cross-sectional view of the adjustable steering knuckle of Figure 7E and depicts the operation of the cable lever 723. When the folding trigger 712 is pulled, the folding trigger actuator 710 rotates, and the lever stop 715 engages with and pulls the end of the cable lever 723. This pulling action rotates the cable lever 723 about the fulcrum 725, which causes the cable lever 723 to pull the cable 720. Using the cable lever 723 eliminates the need for rollers and their shafts and allows for actuation with less force.

[0131] Figure 8 depicts an example of a cup holder assembly 800 that may be mounted near or attached to the adjusting knuckle of Figure 7A. In some cases, the cup holder assembly may be formed as a separate component that can be attached to and detached from the trolley frame 105 by a user. The cup holder assembly 800 may include a cup holder mount 810 that extends at least partially around a portion of the fixed handle portion 114 of the trolley and may extend further over at least a portion of the adjusting knuckle 115. A cup holder 820 for holding cups, jars, or bottles may be attached to the cup holder mount 810. The cup holder mount 810 and / or the cup holder 820 may be formed of polymers, composite materials, or combinations thereof. In some cases, the cup holder mount 810 may rotate about an axis 815 that is transverse to the direction along the fixed handle portion 114. When the trolley frame is folded, this rotation allows the cup holder 820 to rotate so that the trolley frame can achieve a smaller size when folded (e.g., rotate away so that the trolley handle 110 can be folded closer to the rear support legs 140).

[0132] Figure 9A depicts an example of a child seat frame 910 that can be attached to a first child seat 120 and / or a second child seat that can be mounted to a stroller frame 105. When provided to the consumer, the first and / or second child seats may or may not be assembled with the stroller frame 105. For example, one or more child seats, baskets, carriers, or infant car seats may be purchased separately and then installed on the stroller frame 105 used in the stroller system 100 shown in Figures 1A to 3B.

[0133] The child seat frame 910 may be at least partially formed from tubing formed as a hoop. This tubing may be extruded metal or formed from a composite material. The hoop may be assembled from two or more tubing. The frame 910 may include one or more crossbars 930 to provide additional strength to the frame and also to provide a structure to which a child seat can be attached or supported. The child seat frame 910 may further include a seat hub 920 having a seat hub insert 922, a release actuator 925, and a seat tilt actuator 940.

[0134] Figure 9B depicts an example of a child seat frame 910 including a footrest 950 (with a foot pedal 952). The footrest and foot pedal may be formed of a polymer, composite material, or a combination thereof, and are attached to the tubing of the seat frame 910. In some cases, the footrest 950 and foot pedal 952 may replace the metal tubing at the lower location of the seat frame 910. In other cases, the footrest and foot pedal may extend above the metal tubing at the lower location of the seat frame 910. The footrest and foot pedal provide a robust and durable structure for more comfortable support of a child's legs and feet.

[0135] Figure 9C shows further details of the exemplary footplate used in the child seat implementation of Figure 9B. The footplate 950 may extend over the crossbar 930 and includes a flange 956 on one of its rear sides. The flange 956 may include anchoring holes 957 for anchoring the child seat thereto. The footplate 950 may also include crossbar holes 955, with the footplate extending over the crossbar 930. These crossbar holes 955 can be used to secure the footplate 950 to the crossbar 930 (e.g., using rivets, screws, snaps, or other locking devices). The footplate 950 may also include one or more locking anchors 954 at a lower location on the footplate. These locking anchors 954 can accept screws, snaps, or other locking devices attached to the fabric of the child seat.

[0136] Figure 9D depicts an example of a child seat 120 having a child seat 915 attached to a child seat frame 910. Figure 9E is a cross-sectional view of the seat assembly of Figure 9D. The child seat may be at least partially made of fabric. For example, the child seat 915 may be attached to and detached from the seat frame 910 by the user so that the fabric can be easily washed, for example, in a conventional washing machine.

[0137] While some stroller seats may have detachable fabric, these seats typically include reinforcement members that can obstruct or hinder washing the fabric in a conventional washing machine and machine drying the fabric. The child seat of the present invention has removable reinforcement members to allow washing the fabric in a conventional washing machine and machine drying.

[0138] Child seat 915 may include a fabric seat backrest 980, a back panel 970, fabric side panels 985, and a seat plate 960. The back panel and seat plate may comprise a stiff material, such as a polymer, composite material, fiberboard, or board composite material, or combinations thereof. In some cases, seat plate 960 and back panel 970 may be covered with fabric and / or foam material for protection and / or cushioning. Back panel 970 may be inserted into a seat back pocket 984 formed of the fabric of child seat 915, as shown in Figure 9E. Seat plate 960 may be inserted into a seat plate pocket 986 formed of the fabric of child seat 915. Locking elements 990 (e.g., fasteners, pins, hook-and-loop pads, etc.) may be used to secure seat plate 960 and / or back panel 970 in their respective pockets.

[0139] A seat frame pocket 982 may also be formed from the fabric of the child seat. The seat frame pocket 982 may extend around at least one part of the seat frame 910. Fasteners, hook and loop pads or other locking devices may be provided to wrap around and / or secure the fabric of the seat frame pocket 982 to the seat frame 910.

[0140] Child seat 915 may also include safety straps to prevent a child from accidentally falling out of child seat 120. The safety straps may include shoulder straps 977, lap straps 973, and a leg strap 962. These straps may have an adjustable length, and their ends may be attached to the child seat fabric. In some cases, these straps may pass through openings (e.g., buttonholes) in the fabric of child seat 915 and be attached to seat panel 960 and / or backrest 970. These safety straps may be formed of a woven material (e.g., nylon or polyester).

[0141] Figure 10A depicts an example of a foldable and adjustable canopy 122 attached to the child seat frame 910 of Figure 9B. In Figure 10A, the canopy 122 is adjusted to a lower position on the frame 910 above the seat hub 920. The canopy may include a canopy hub 1010, a rotatable bow 1030, a fixed bow 1032, one or more reinforcing members 1034, and fabric 1015. The rotatable bow 1030, the fixed bow 1032, and the one or more reinforcing members 1034 may be formed of metal, polymer, composite material, or a combination thereof, and may be formed as flexible wires, strips, tubes, etc. The rotatable bow 1030 and the fixed bow 1032 may be connected to the canopy hub 1010 to provide a rigid connection to the child seat frame 910. Figure 10B depicts an example of the canopy 122 of Figure 10A adjusted to the upper position along the child seat frame 910 of Figure 9B.

[0142] The canopy hub 1010 can be configured to translate along the child seat frame 910, allowing the user to adjust the position of the canopy 122 on the frame 910 to two or more different locations, as shown in Figures 10A and 10B. This translation of the canopy can provide convenience, as it allows the canopy 122 to be properly rearranged and positioned for children of different heights. Furthermore, as the child grows, this translation allows for height adjustment of the same child seat.

[0143] Figure 10C depicts an example of a canopy hub 1010 that allows translation of the canopy 122 and further allows folding of the canopy fabric 1015. A first canopy hub 1010 may be located on the left side of the seat frame 910, and a second canopy hub 1010 may be located on the right side of the seat frame. The canopy hub 1010 may include a translational mount 1016, a pivot hub 1012, and a pivot arm 1014. The translational mount, pivot hub, and pivot arm may be formed of metal, polymer, composite material, or some combination thereof. The pivot hub 1012 and pivot arm 1014 are rotatable about the translational mount 1016. A fixed bow 1032 may be attached to the translational mount 1016. A rotatable bow 1030 may be attached to the pivot arm 1014. Rotating the rotatable bow 1030 and pivot arm 1014 forward (e.g., about an axis 1011 that travels laterally on the trolley) raises the canopy 122 and tucks its fabric 1015 into a taut position. Rotating the rotatable bow 1030 and pivot arm 1014 backward retracts the canopy 122 and folds its fabric 1015 to the rear of the trolley. Figure 10C depicts the rotatable bow 1030 and pivot arm 1014 in their folded position. For simplicity, the fabric is not shown in the diagram of Figure 10C.

[0144] Figure 10D depicts a cross-section of a portion of the canopy hub 1010 of Figure 10C. A translational mount 1016 may extend wholly or partially around a tube of the seat frame 910. A track 1020 may be mounted on the seat frame 910 or may be formed as part of the seat frame. The track may include two or more recesses 1022. The translational mount 1016 may include a latch 1017, which may be formed as a flexible finger with a protrusion 1018. The protrusion 1018 may engage with the recesses 1022 in the track 1020 to secure the canopy hub 1010 and the canopy 122 along the seat frame 910 at two or more locations.

[0145] Please refer again to Figures 9A and 1A. The child seat frame 910 and the child seat or other child carrier can be secured to the seat mounts 125, 225 of the stroller frame using a seat hub 920. Figure 11A is a perspective view depicting an example portion of the seat hub 920 inserted into a socket in the seat mount 125. Figure 11B is a cross-sectional view illustrating the seat hub of Figure 11A in a locked configuration. The seat hub may include a seat hub body 1110, a seat hub insert 922 (inserted into the seat mount socket in Figure 11A), and a release actuator 925. The seat hub 920 provides the functionality to securely attach and detach the child seat 120 to the stroller frame 105, and to rotate the child seat relative to the stroller frame (change its tilt).

[0146] In some cases, the seat hub insert 922 may be formed as part of the seat hub body 1110 (e.g., from the same material in the same molding or casting process). The seat hub insert 922 may include a latch 1130 that engages with a stop 444 formed in the socket of the seat mount 125. A compression spring 1134 may be attached to the seat hub insert 922 to bias the latch 1130 into a locking orientation. In the locking orientation, the latch 1130 secures the seat hub 920 and the child seat, child carrier, or basket to the stroller frame and prevents them from accidentally separating from the stroller frame. To achieve the narrow profile of the insert 922, the latch 1130 may retract using a tilt guide 1122 (e.g., a groove, ridge, or track) formed in a portion of the release actuator 925. The release actuator may have a body 1120 including a finger-shaped recess 1125 (which allows the finger to engage with a higher portion of one of the actuators 925). The seat hub body 1110, the seat hub insert 922, and the release actuator body 1120 may be formed of metal, polymer, composite material, or a combination thereof.

[0147] Figure 11C is a cross-sectional view illustrating the seat hub 920 in the unlocked configuration. By pulling the seat release actuator 925 upward, the tilt guide 1122 engages with the mating structure on the latch and retracts the latch 1130 inward. This retraction of the latch 1130 allows the seat hub insert 922 to be removed from the socket of the seat mount 125.

[0148] The seat hub 920 may also include a rotating plate 1140 (depicted in Figures 11D and 11F) and a reclining assembly 1150 (depicted in Figures 11E and 11F). The rotating plate may be mounted in a rotating plate recess 1112 (see Figure 11A) or attached to the seat hub body 1110. If mounted in a recess, the recess 1112 may include shaped teeth 1114, pins, protrusions, or other structures, holes, recesses, or other mating features formed in the rotating plate 1140 that prevent the rotating plate 1140 from rotating relative to the seat hub body 1110. Alternatively, the rotating plate may be secured to the seat hub body 1110 using pins, screws, or rivets. The rotating plate 1140 may be formed of a robust and durable material (e.g., metal or composite material) to withstand the load stresses associated with supporting and rotating the child seat when carrying a child. By using the robust rotating plate 1140 and seat release actuator 925 and latch assembly shown in Figure 11B, the seat hub 920 can be narrow (e.g., no wider than 20 mm).

[0149] The rotating plate 1140 may include a plurality of reclining latches 1146 or slots for locking the child seat 120 in the reclining orientation relative to the stroller frame. The rotating plate may also include a hole at the pivot 1142 through which a screw, shaft, or pin can be inserted. The pivot 1142 may be the axis around which the reclining assembly 1150 rotates. In some cases, pairs of latches or slots may be completely opposite to the pivot 1142 to provide additional strength for securing the child seat's tilt.

[0150] Figure 11E is a partially exploded view illustrating an example of a reclining assembly 1150 that may be attached to a seat hub 920. The reclining assembly may include a first cover 1152, a second cover 1154, a pivot plate 1160, a pin carrier 1162, and a compression spring 1164. The first cover, second cover, and pin carrier may be formed of metal, polymer, composite material, or a combination thereof. The pin carrier 1162 may carry one or more pins 1166 extending through holes in the pin carrier. The compression spring 1164 may be configured to bias the pin carrier 1162 into a locking position. The pivot plate 1160 may be formed of a robust and durable material (e.g., metal or composite material).

[0151] The first cover 1152 may include a first insertion portion 1155 for insertion into a tube of the child seat frame 910. The second cover 1154 may also include a second insertion portion 1156 for insertion into the tube of the child seat frame or into a socket on the child seat frame. A pivot piece 1160 may be located between the first cover 1152 and the second cover 1154, and the assembly may be secured together by screws or rivets extending through holes in the first cover, the pivot piece, and the second cover. The pivot piece 1160 may have an arm that travels parallel to the first and second insertion portions and extends into the tube of the child seat frame 910 to provide additional strength when the various parts of the seat frame 910 are joined together. In some cases, the reclining assembly may be attached to the seat frame 910 by screws, rivets, other locking devices, or by welding. When assembled together and attached to the seat frame 910, the pivot piece 1160 and the reclining assembly 1150 may have a fixed orientation relative to the seat frame.

[0152] The first cover 1152 may also include an opening 1158 into which at least one portion of the rotating plate 1140 and the seat hub body 1110 can be fitted. In some embodiments, a groove 1116 or a tongue (see FIG. 11A) may extend around at least a portion of the rotating plate recess 1112 (which mates with a tongue 1118 (see FIG. 11G) or a groove extending around at least a portion of the opening 1158). The mating tongue and groove may guide or assist in guiding the rotation of the reclining assembly 1150 relative to the seat hub body 1110.

[0153] Figure 11F depicts another view of the reclining assembly 1150 of Figure 11E in an unlocked configuration with the first cover 1152 removed. Figure 11G depicts a cross-sectional view of the reclining assembly 1150 of Figure 11E with the first cover 1152 in a fixed position. Figure 11H depicts further details of the pivot piece 1160, pin carrier 1162, and pin 1166 that can be used in the reclining assembly 1150 of Figure 11E. These three figures help to understand how the reclining assembly 1150 and the child seat 120 rotate and lock relative to the seat hub body 1110 and the stroller frame 105. Rotation of the reclining assembly 1150 changes the tilt angle of the seat frame 910 and the child seat 120.

[0154] When the seat hub body 1110, rotating plate 1140, pivoting plate 1160, and reclining assembly 1150 are assembled into the seat hub 920, the orientation of the reclining assembly can be locked relative to the seat hub body by one or more pins 1166 (which pass through the pivoting plate 1160 and extend into the rotating plate 1140). These pins 1166 may extend through an opening 1165 in the pivoting plate 1160 and engage one or more reclining latches 1146 in the rotating plate 1140 to lock the pivoting plate 1160 relative to the rotating plate 1140. There may be a plurality of reclining latches 1146 in the rotating plate 1140, and they may or may not be equidistant.

[0155] To change the tilt of the child seat 120, the pin carrier 1162 can be translated to remove the pin(e) from the reclining lever(e) to an unlocked configuration, as illustrated in FIG11F. In this unlocked configuration, the pivot plate 1160 and the child seat 120 can be rotated about the swivel plate 1140 and the seat hub body 1110 to different orientations, which can be locked at the new orientation using the pin(e)1166 and the lever(e)1146.

[0156] In some implementations, the pin carrier 1162 may be translated within the reclining assembly 1150 by a cable or wire (not shown) that pulls against a compression spring 1164 (see Figure 11G). This cable may pass through the reclining assembly and through or along a tube of the seat frame 910 to the seat reclining actuator 940 (Figure 9A). Moving the seat reclining actuator 940 stretches the cable, causing it to pull the pin carrier 1162. The wire or cable may travel from the reclining actuator 940 to the pin carrier in the left and right side seat hubs 920.

[0157] As mentioned above, the stroller system 100 may accept one or two child seats, infant car seats, baskets, or any combination of the aforementioned child carriers. However, the stroller system is not limited to child carriers. The stroller system 100 may also accept one or two auxiliary baskets 1200, an example of which is depicted in Figure 12A. These baskets may be installed in place of the first child seat and / or the second child seat. In Figure 12A, the child seat 120 is installed in the position of the second child seat, while the basket 1200 is installed in the position of the first child seat.

[0158] Figure 12B illustrates further details of the auxiliary basket 1200 of Figure 12A. The basket 1200 may include a frame 1210 to which a basket body 1220 may be attached. The frame 1210 may be formed of metal, polymer, composite material, or combinations thereof. The basket body 1220 may be formed of fabric, polymer, composite material, or combinations thereof. The basket may have a base 1203 and a plurality of side walls 1222, which, when configured for use, define the basket's storage volume 1205. The storage volume 1205 may be between 1 cubic foot and 5 cubic feet. In some cases, reinforcing members may be used on at least two side walls 1222 of the basket body, allowing the basket 1200 to stand upright on its base 1203 when placed on a flat surface and detached from the trolley frame 105. This self-standing functionality facilitates loading and unloading of the basket when not attached to the trolley. Alternatively or additionally, the basket 1220 can be folded into the frame 1210, allowing the basket 1200 to be stored in a flat form.

[0159] In some cases, basket 1200 may include handles 1230 on opposite sides of the basket. These handles 1230 may include portions of frame 1210 and notches in basket body 1220. Seat mount adapters 1240 are interchangeably attached to and detached from frame 1210. In some embodiments, each seat mount adapter may be attached to and detached from rail 1250 (which is attached to basket frame 1210). Rail 1250 allows basket 1200 to translate relative to trolley frame 105 to different lockable positions. Seat mount adapters 1240 may be commercially available assembled with basket 1200 or may be supplied separately from basket 1200. These seat mount adapters for use with the basket may have different designs and allow the basket to be mounted to different types of seat mounts on different trolleys.

[0160] Figure 12C is an exploded view of the auxiliary basket 1200 of Figure 12A. The frame 1210 may be formed as two or more segments 1211, 1212 of a tube (e.g., an extruded tube) joined together by couplers 1235. The couplers 1235 may form a handle for the basket and may be at least partially covered with a soft material (such as foam, fabric, or imitation leather).

[0161] Figure 12D depicts an example of the basket body 1220 attached to the basket frame 1210 for the auxiliary basket of Figure 12B. In some cases, multiple sidewalls 1222 of the basket body may extend through slots 1215 in the basket frame 1210. A flange (not shown) pressed along the edge of the basket body 1220 can secure the basket body in the slot. In some embodiments, an internal channel or tube wall 1217 may be formed as part of the basket frame 1210 to reinforce the frame and prevent the slots 1215 from separating under heavy loads in the basket 1200.

[0162] Figure 12E illustrates an example of a pressed-out flange 1226 that assists in supporting the basket body 1220 in the basket frame 1210. This pressed-out flange may be formed from fiber strands (e.g., ropes). Alternatively, it may be a rod or tube formed from, for example, a polymer or composite material. The pressed-out flange can be inserted into a sleeve 1224 formed along the edge of the basket body 1220.

[0163] Figure 12F illustrates the basket body 1220 of Figure 12B in a folded configuration. Although shown not attached to the basket frame 1210, the basket body 1220 can be folded in the same manner when attached to the basket frame 1210. In some cases, the basket 1200 (when folded) can stand no more than 1.1 times the height of the basket frame 1210 (e.g., no more than 10% higher than the basket frame 1210 without the basket body 1220). When folded, the same basket body provides sufficient strength for the basket to stand upright on its base 1203 and secure most of its storage volume 1205.

[0164] To fold the basket body and secure the self-standing feature of the basket 1200, the basket body 1220 may include reinforcing members and covers or panels forming various portions of the basket body 1220. These reinforcing members may be attached to polymer or composite boards, strips, rods, or tubes of the cover or panel of the basket body 1220. Figure 12G illustrates an overlapping and locking cover 1227 that may be used to form the basket body of the auxiliary basket 1200. In some cases, there may be one or more covers 1227 or panels formed of fabric containing one or more reinforcing members. These covers may include one or more locking elements 1228 along one or more edges of the cover. Examples of locking elements include hooks and loop locks, fasteners, and zippers. A portion of the locking element (e.g., a hook pad) may be on the cover 1227, and another portion of the locking element may be on an adjacent portion of the basket body 1220. When the cover or panel is released, the basket 1200 can be folded. To lock the cover 1227, the reinforcing members in the basket can be forced apart into their designated positions. Forcing the reinforcing members apart can, for example, raise the reinforcing sidewalls 1222 of the basket 1200, thereby allowing the basket to stand upright on its base supporting the basket frame 1210.

[0165] Figure 13A depicts further details of the track 1250 accompanying the basket 1200 of Figure 12B and used to secure the seat mount adapter to the basket frame 1210. The track 1250 may include a track follower or other track formed of a metal, polymer, composite material, or a combination thereof. In some cases, the track may include one or more flexure latches 1343 that, when mounted on the track, engage a seat mount adapter to secure its positioning relative to the basket frame 1210. In some cases, selected adapters for particular trolleys and seat mounts may snap onto the track having the flexure latches 1343, and tools may be required to depress the latches 1343 and remove the adapter.

[0166] Figure 13B depicts an example of a seat mount adapter 1240 mounted on a track 1250. A portion 1305 of the seat mount adapter may extend at least partially around the track 1250 to secure the seat mount adapter 1240 to the track. The seat mount adapter 1240 may include a seat hub insert 922 that inserts into a socket of a seat mount 125. A latch 1320 may be attached to the insert 922 to lock the seat mount adapter 1240 to the seat hub 920, as illustrated above with reference to Figures 11A to 11C. The seat mount adapter 1240 may also include a latch actuator 1310 that can be deflected to retract the latch 1320 to an unlocked configuration, as shown in Figure 13B. In some cases, depending on the user's preference, the latch actuator may be fixed in a locked or unlocked position so that the basket may be locked or unlocked to the seat mount on the trolley.

[0167] Figure 14 depicts another example of a mounting device for the auxiliary basket 1200 of Figure 12B. This figure also shows three different seat mount adapters (first seat mount adapter 1410, second seat mount adapter 1420, and third seat mount adapter 1430), which allow the basket 1200 to be attached to different types of seat mounts for different trolley systems. The mounting device may include a basket hub 1400 attached to the basket frame 1210. In some cases, the hub 1400 may be attached to the basket frame 1210 using a frame fastener or clamp 1402 or other structure (extending around at least one portion of a tube in the basket frame). This fastener, clamp, or other structure can translate along the basket frame 1210, allowing the user to adjust the positioning of the basket 1200 relative to the trolley frame 105. Each seat mount adapter may include a hub insert 1415 that inserts into and locks into the basket hub 1400.

[0168] The aforementioned cart system can be implemented in various configurations and operated using the methods listed below. (1) A stroller system for transporting one or more children, the stroller system comprising: a stroller frame including a handle, at least one front support leg and a rear support leg; a plurality of wheels attached to the at least one front support leg and the rear support leg to support the stroller frame; a first pair of seat adjustment assemblies including a first pair of seat mounts connected to the stroller frame and configured to translate the first pair of seat mounts along a first direction; a second pair of seat adjustment assemblies including a second pair of seat mounts connected to the stroller frame and configured to translate the second pair of seat mounts along a second direction different from the first direction; and a first child carrier that can be mounted in the first pair of seat mounts in a forward and rearward orientation. (2) The stroller system as configured in (1) further includes: a second child carrier that can be installed in the second pair of seat mounts in a forward and rearward orientation, wherein after the first child carrier is installed in the first pair of seat mounts, the second child carrier can be installed in the second pair of seat mounts without removing the first child carrier, wherein each of the first pair of seat adjustment components and the second pair of seat adjustment components is fixed to the stroller frame and configured to receive the first child carrier and the second child carrier respectively without using an adapter. (3) The trolley system as configured in (1) or (2), wherein: the handle includes a tube that includes a track integrated inside the extruded tube along which the first pair of seat mounts translate. (4) The trolley system as configured in any of (1) to (3), wherein: the wheels include two front rotating wheels and two rear wheels; and when the two front rotating wheels are rotated to move forward, a distance between a first line passing through their relative front wheel axle and a second line passing through the relative rear wheel axle of the two rear wheels is between 22 ½ inches and 24 ½ inches. (5) The trolley system as configured (4), wherein the first pair of seat adjustment components and the second pair of seat adjustment components are mounted along two substantially linear portions of the trolley frame (from the at least one front support leg to a grip portion of a portion of the handle). (6) The trolley system as configured in any of (1) to (5), wherein the handle includes an adjustable handle portion and a fixed portion, and wherein the trolley system further includes: an adjustment knuckle that connects the adjustable handle portion of the handle to the fixed portion of the handle, wherein the adjustable handle portion includes a grip portion, and wherein the adjustment knuckle includes a mechanical height adjustment actuator to change the height of the grip portion relative to a surface on which the wheels are located when the trolley frame is unfolded; and a mechanical folding actuator to actuate the folding of the trolley frame and the operation is independent of the height adjustment actuator. (7) The trolley system as configured in (6), wherein: the height adjustment actuator includes a button that is pushed into the adjustment knuckle; and the folding actuator includes a trigger that is pulled along the outside of the adjustment knuckle. (8) The trolley system as configured in (6) or (7), wherein actuation of the folding actuator allows the trolley frame to fold into a self-standing configuration, wherein the at least one front support leg and the handle are attached to each other within a 15-degree angle. (9) The trolley system as configured in any of (6) to (8), wherein the adjusting steering knuckle includes a cover, and wherein the trolley system further includes a cup holder mount integrated into the cover for the adjusting steering knuckle. (10) The stroller system as configured in any of (1) to (9) further includes: a child seat attached to the first pair of seat mounts, the child seat having a seat frame having a first end and a second end; and a canopy attached to the seat frame and configured to translate along the seat frame to two or more locations. (11) The stroller system as configured (10), wherein the child seat includes a track positioned along the seat frame, the track having one or more levers; and the canopy includes a translatable mount to engage the track, the translatable mount including a resilient protrusion received by the one or more levers. (12) The stroller system of any of configurations (1) to (11) further includes: a child seat attached to the first pair of seat mounts, the child seat having a seat frame and a seat hub attached to the seat frame, the seat hub including a first piece, a second piece and a third piece, wherein the first piece is attached to the seat frame and includes one or more slots. The second piece is adjacent to the first piece and configured to translate relative to the first piece and carries at least one pin protruding from the one or more slots; and the third piece is adjacent to the first piece and includes a plurality of latches to receive the one or more pins and to provide adjustment and locking of the child seat into two or more inclined positions. (13) The stroller system as configured in (12) further includes a latch actuator in the seat hub to lock the child seat to the first pair of seat mounts or the second pair of seat mounts. (14) The trolley system as configured in (12) or (13) wherein the thickness of the seat hub measured in one direction through the first piece, the second piece and the third piece is not greater than 20 mm. (15) The stroller system as configured in any of (1) to (14), wherein the second pair of seat adjustment components includes: a track mounted on the at least one front support leg (on which the second pair of seats is mounted and translating), wherein one of the second pair of seat mounts, the first seat mount, includes an automatic steering lever to determine, when mounted on the second pair of seat mounts, whether a second child carrier is oriented forward or backward, the automatic steering lever being actuated by positioning the first seat mount of the second pair of seat mounts along one of the tracks. (16) The trolley system as configured in any of (1) to (15), wherein the second pair of seat adjustment assemblies comprises: a pair of rails mounted on the at least one front support leg (on which the second pair of seat mounts translates), wherein each of the second pair of seat mounts is directly positioned on one of the opposing rails of the pair of rails. (17) The trolley system as configured in (16) wherein the total thickness of the second pair of seat mounts and one of the pair of tracks is not greater than 20 mm. (18) The trolley system as configured in any of (1) to (17) further includes a basket having a volume for carrying items, the basket comprising: a frame; two adapters attachable to the frame to mount the basket to the first or second pair of seat mounts; a basket body including fabric connected to the frame; a reinforcing member to assist in shaping the fabric into the basket having the volume; and a reversible locking member to latch and release various parts of the fabric. (19) The trolley system as configured in (18), wherein when the locking elements are latched, the basket body supports the frame above the base of the basket and the basket has most of the volume, and wherein when the reversible locking elements are released, the fabric system can be folded into the frame. (20) A method of converting a stroller from carrying one child to carrying two children, the method comprising: attaching a first child carrier to a first pair of movable seat mounts connected to a frame of the stroller; and mounting a second child carrier to a second pair of movable seat mounts, wherein each of the first child carrier and the second child carrier is oriented forward and backward in the first pair of movable seat mounts and the second pair of movable seat mounts. (21) The method of (20) further includes: translating the first child carrier along a first direction while attaching to the first pair of movable seat mounts; and translating the second pair of movable seat mounts along a second direction different from the first direction. (22) The method of (21) wherein the first direction is a linear direction along one of the handles of the cart, and the second direction is between 30 and 90 degrees away from the first direction. (23) The method of any of (20) to (22), wherein the trolley has a front and rear axle distance between 22 ½ inches and 24 ½ inches. (24) The method of any of (20) to (23), wherein the first pair of movable seat mounts and the second pair of movable seat mounts are positioned along two linear portions of the trolley frame (from the front wheel mount of the trolley to one of the grip portions of the trolley handle). (25) The method of any one of (20) to (24) further comprises: at least partially translating the second pair of seat mounts into a storage space in the lower part of the trolley, wherein the second pair of seat mounts are at least partially hidden from view when viewed from one side of the trolley. (26) The method of any of (20) to (25), wherein the first child carrier is a child seat having a canopy attached to the frame of the child seat, the method further comprising: translating the canopy along the frame of the child seat. (27) A stroller system for transporting one or more children, the stroller comprising: a foldable frame including a handle, at least one front support leg and two rear support legs; a plurality of wheels attached to the at least one front support leg and the two rear support legs to support the foldable frame; and an adjustable steering knuckle connecting an adjustable handle portion of the handle to a fixed portion of the handle, wherein the adjustable handle portion includes a grip portion, and wherein the adjustable steering knuckle includes a height adjustment actuator to change the height of the grip portion relative to a surface on which the wheels are located when the foldable frame is unfolded, and includes a folding actuator to actuate the folding of the foldable frame and the operation is independent of the first actuator. (28) The trolley system as configured in (27) further includes: a first pair of translatable seat mounts connected to the foldable frame and configured to translate along a first direction relative to the handle; and a second pair of translatable seat mounts connected to the foldable frame and configured to translate along a second direction different from the first direction. (29) The trolley system as configured in (28), wherein the first pair of movable seat mounts, the second pair of movable seat mounts and the adjustable steering knuckle are placed along two linear portions of the trolley frame (from the at least one front outrigger to the grip portion). (30) The trolley system as configured in any of (27) to (29), wherein: the height adjustment actuator includes a button that can be pushed into the adjustment knuckle; and the folding actuator includes a trigger that can be pulled along the outside of the adjustment knuckle. (31) The trolley system as configured (30), wherein the trigger is connected to a folding trigger actuator, which, when the trigger is pulled, rotates in the adjusting steering knuckle and pulls a cable to fold the foldable frame. (32) The trolley system as configured in (30) or (31), wherein the folding actuator includes: a cable rod that rotates about a pivot and pulls a cable when the trigger is pulled. (33) The trolley system of any of configurations (27) to (32), wherein the height adjustment actuator includes: a sliding gear having teeth formed around one periphery of the sliding gear, wherein the sliding gear is movable within the adjustment knuckle in a direction parallel to a pivot axis about which the adjustable grip portion pivots relative to the fixed portion of the grip; and shaped teeth on the interior of the adjustment knuckle that engage with the teeth on the sliding gear. (34) The trolley system of any of the configurations (27) to (33), wherein actuation of the folding actuator allows the trolley frame to be folded into a configuration in which the at least one front leg and the handle are attached to each other within a 15-degree angle. (35) The trolley system as configured in any of (27) to (34), wherein the adjusting steering knuckle further includes a cover, and wherein the trolley system further includes a cup holder mount integrated into the cover for the adjusting steering knuckle. (36) The trolley system of any of the configurations (27) to (35) further includes a cup holder assembly attached to the adjustment steering knuckle, wherein the cup holder assembly is rotatable relative to the adjustment steering knuckle. (37) A method of operating a trolley having a foldable frame supported by wheels, the method comprising: actuating a height adjustment actuator located at an adjustable steering knuckle on a handle of the trolley to change the height of a grip portion relative to a surface on which the wheels are located when the foldable frame is unfolded, wherein the grip portion is located on an adjustable grip portion of the handle; and actuating a folding actuator at the adjustable steering knuckle to fold the foldable frame of the trolley, wherein the height adjustment actuator and the folding actuator operate independently of each other. (38) The method as in (37), wherein actuating the height adjustment actuator comprises pushing a button into the adjustment steering knuckle. (39) The method as in (37) or (38), wherein actuating the folding actuator comprises pulling a trigger along the surface of the adjusting steering knuckle. (40) The method of any of (37) to (39) further comprises: attaching a first child carrier to a first pair of movable seat mounts connected to the foldable frame of the stroller; and mounting a second child carrier to a second pair of movable seat mounts connected to the foldable frame without removing the first child carrier, wherein each of the first child carrier and the second child carrier can be mounted in the first pair of movable seat mounts and the second pair of movable seat mounts in a forward and rearward orientation. (41) The method of (40) further includes: translating the first child carrier along a first direction while attaching to the first pair of movable seat mounts; and translating the second pair of movable seat mounts along a second direction different from the first direction. (42) A stroller system for transporting one or more children, the stroller system comprising: a stroller frame including a handle, at least one front support leg and two rear support legs; a plurality of wheels attached to the at least one front support leg and two rear support legs to support the stroller frame; a child seat having a seat frame; and a seat hub connected to the seat frame, the seat hub including a first piece, a pin carrier and a second piece, wherein the first piece has a fixed orientation relative to the seat frame and includes one or more slots; the pin carrier is adjacent to the first piece and configured to translate relative to the first piece and carry at least one pin protruding through the one or more slots; and the second piece has a fixed orientation relative to the stroller frame and has a plurality of reclining latches to receive the one or more pins and to provide adjustment and locking of the child seat into two or more reclining positions. (43) The stroller system as configured in (42) further includes: a first pair of movable seat mounts connected to the stroller frame and configured to translate relative to the handle, wherein the child seat is attached to the first pair of movable seat mounts; and a second pair of movable seat mounts connected to the stroller frame and configured to translate relative to the handle to adjust the positioning of a child carrier mounted in the second pair of movable seat mounts. (44) The trolley system as configured in (43), wherein the first pair of movable seat mounts translates along a first axis and the second pair of movable seat mounts translates along a second axis having an orientation different from the first axis. (45) The trolley system as configured in any of (42) to (44), wherein the seat hub has a thickness of not more than 20 mm. (46) The trolley system as configured in any of (42) to (45), wherein the first piece comprises two arms that are inserted into different tubular pieces joined together by the seat hub to form the seat frame. (47) The trolley system as configured in any of (42) to (46), wherein the first piece, the pin carrier and the second piece are made of metal. (48) The trolley system as configured (43) wherein the seat hub includes a seat hub insert that is inserted into one of the first movable seat mounts of the first pair of movable seat mounts, and wherein the seat hub insert includes a recess that provides space for an automatic steering lever located within the first movable seat mount. (49) The stroller system as configured in any of (42) to (48), wherein the child seat includes: a canopy attached to the seat frame and configured to translate along the seat frame to two or more locations. (50) The stroller system as configured (49) wherein the child seat includes a track positioned along the seat frame, the track having one or more levers; and the canopy includes a translatable mount to engage the track, the translatable mount including a resilient protrusion received by the one or more levers. (51) A stroller for transporting one or more children, the stroller comprising: a stroller frame including a handle, at least one front support leg and a rear support leg, wherein the at least one front support leg extends in front of the rear support legs; a plurality of wheels attached to the at least one front support leg and the rear support legs to support the stroller frame; a first pair of seat adjustment assemblies including a first pair of seat mounts connected to the stroller frame and configured to translate the first pair of seat mounts along a first direction when a child carrier is mounted on the first pair of seat mounts; and a second pair of seat adjustment assemblies including a second pair of seat mounts connected to the stroller frame and configured to translate the second pair of seat mounts along a second linear direction other than the first direction. (52) The trolley as configured in (51), wherein the first pair of seat adjustment components and the second pair of seat adjustment components are placed along two linear portions of the trolley frame (along the at least one front support leg to a grip portion located on the handle). (53) The trolley as configured in (51) or (52), wherein the second pair of seat mounts can be moved into one of the storage spaces of the trolley such that when the trolley is viewed from the left or right side of one of the trolleys, the second pair of seat mounts are at least partially hidden and not visible. (54) The trolley as configured in any of (51) to (53) further includes: an adjustment knuckle that connects an adjustable grip portion of the handle to a fixed portion of the handle, wherein the adjustable grip portion includes a grip portion, and wherein the adjustment knuckle includes a mechanical height adjustment actuator to change the height of the grip portion relative to a surface on which the wheels are located when the trolley frame is unfolded; and a mechanical folding actuator to actuate the folding of the trolley frame and the operation is independent of the height adjustment actuator. (55) A storage basket for a stroller, the storage basket comprising: a frame; and a basket body attached to the frame, wherein the basket body comprises: fabric forming sidewalls and a base of the basket; a reinforcing member in the fabric to assist in shaping the fabric into the basket having a storage volume; and reversible locking members for latching and releasing portions of the basket body, wherein when the locking members are latched, the basket body supports the frame above the base of the basket and the basket retains most of the storage volume, and wherein when the reversible locking members are released, the fabric is foldable into the frame. (56) The storage basket as configured in (55) further includes: an adapter for attaching to the frame at one or more locations along the frame; an insert positioned along the adapter for insertion into one of the seat mounts of the stroller; a latch positioned along the insert for locking the adapter and the storage basket in the seat mount; and a latch actuator positioned on the adapter for moving the latch from a locked position to an unlocked position. (57) The storage basket as configured in (55) or (56) further includes: two rails attached to the frame; an adapter for attaching to the rails and providing mounting of the basket to a seat mount on the stroller; and a tool for releasing the adapter from the rails. (58) The storage basket as configured in (57), wherein one of the adapters, a first adapter, comprises: an insert positioned along the first adapter for insertion into one of the seat mounts, a first seat mount; a latch positioned along the insert for locking the adapter and the storage basket in the seat mount; and a latch actuator positioned on the adapter for moving the latch from a locked position to an unlocked position. (59) The storage basket as configured in (55) to (58) further includes two handles formed on opposite sides of the storage basket, each handle including a portion of the frame and a notch in the basket body. in conclusion

[0169] Although various innovative embodiments have been described and illustrated in this specification, those skilled in the art will readily conceive of various other components and / or structures for performing the function and / or obtaining one or more of the results and / or advantages described in this specification, and each of these variations and / or modifications is considered to be within the scope of the innovative embodiments described in this specification. More generally, those skilled in the art will readily understand that all parameters, dimensions, materials, and configurations described in this specification are exemplary, and that actual parameters, dimensions, materials, and / or configurations will depend on the specific applications in which the innovative descriptions are used. Those skilled in the art will recognize or be able to identify many equivalents of the innovative embodiments described in this specification using only routine experimentation. Therefore, it should be understood that the foregoing embodiments are presented by way of example only, and that innovative embodiments may be implemented in ways other than those specifically described and claimed within the scope of the claims and their equivalents described below. The innovative specific embodiments disclosed in this invention refer to each individual feature, system, object, material, kit, and / or method described in this specification. Furthermore, if such feature, system, object, material, kit, and / or method does not contradict each other, any combination of two or more of such feature, system, object, material, kit, and / or method is included within the innovative scope of this invention.

[0170] Furthermore, various innovative concepts can be embodied as one or more methods, of which examples have been provided. The actions performed as part of this method can be ordered in any suitable manner. Therefore, various specific embodiments can be constructed in which actions are performed in a different order than illustrated, which may include simultaneous performance of some actions, even if they are shown as sequential actions in the illustrative specific embodiments.

[0171] All definitions defined and used in this specification should be understood as being in accordance with dictionary definitions, definitions included in references, and / or the general meaning of such defined terms.

[0172] The prefixes “a” and “a” used in this specification and in the claims are to be understood as “at least one” unless clearly indicated to the contrary.

[0173] As used in the specification and the claims, the term "and / or" should be understood to mean "any one or both" of the components thus combined (i.e., components that are presented together in some cases and separately in others). The multiple components listed using "and / or" should be understood in the same way as "one or more" of the components thus combined. Other components may be included as needed, whether or not they relate to the specifically identified type of components. Thus, by a non-limiting example, when used in conjunction with opening terms such as "comprising," reference to "A and / or B" may refer only to A in one embodiment (including components other than B as needed); only to B in another embodiment (including components other than A as needed); and both A and B in yet another embodiment (including other components as needed); and so on.

[0174] As used in this specification and in the claims, "or" should be understood to have the same meaning as "and / or" as described above. For example, when separating listed items, "or" or "and / or" should be interpreted as inclusive, that is, including at least one of a plurality of or a sequence of components (but also including more than one), and, where necessary, additional unlisted items. Only terms such as "only one of" or "exactly one of," or "constituting" as used in the claims, which clearly indicate the opposite, will refer to exactly one of a plurality of components or a sequence of components. Generally, in use following exclusive terms such as "any," "one of," "only one of," or "exactly one of," the term "or," as used in this specification, should only be interpreted as indicating an exclusive alternative (i.e., "one or the other, not both"). "Substantially constituting," when used in the claims, should have its general meaning as used in the field of patent law.

[0175] As used in the specification and in the claims, the term "at least one" referring to a list of one or more components should be understood to mean at least one component selected from any one or more of the components listed, but does not necessarily include every single component specifically listed in the list, nor exclude any combination of components in the list. This definition also allows for components that may be presented as needed, whether related to or unrelated to the specifically identified components in the list, in addition to those specifically identified in the list referred to by the term "at least one". Therefore, by a non-limiting example, "at least one of A and B" (or equivalent to "at least one of A or B", or equivalent to "at least one of A and / or B") may in one embodiment refer to at least one (which may include more than one if necessary) consisting only of A without B (and may include components other than B if necessary); in another embodiment, it may refer to at least one (which may include more than one if necessary) consisting only of B without A (and may include components other than A if necessary); in yet another embodiment, it may refer to at least one (which may include more than one if necessary) of A and at least one (which may include more than one if necessary) of B (and may include other components if necessary); and so on.

[0176] In the claims and in the foregoing description, all transitional terms such as “comprising,” “including,” “with,” “having,” “containing,” “involving,” “holding,” “constituting,” and the like shall be understood as open-ended, meaning including but not limited to. Only the transitional terms “constituting” and “basic constituting” shall be closed or semi-closed transitional terms, respectively, as set forth in Section 2111.03 of the U.S. Patent Examination Procedure Manual.

[0177] 100: Stroller system; stroller; children's stroller 105: Trolley frame; frame; foldable frame 110: Handle; cart handle 112: Adjustable grip 113: Grip part; Stroller grip part 114: Fixed grip area; Fixed part 115: Adjust the steering knuckle 116, 820: Cup holder 118: First seat adjustment handle; handle; seat adjustment handle; adjustment handle 120: First child seat; child seat; first child carrier; child carrier 122: Foldable and adjustable canopy; canopy 125: First pair of seat mounts; adjustable seat mounts; seat mounts; first seat mounts; first pair of seat adjustment components; first pair of lateral seat mounts 127: Frame hinge; lockable frame hinge 130:Front feet 132: Front wheel mounting parts; wheel mounting parts 135: Front wheel; wheel 138: Install the component 140: Rear support leg 142: Rear outrigger pivot joint; pivot joint 145: Rear wheel; wheel 147: Foot pedal 150: Linkage 160: Basket with base frame; basket 162: Solid frame; frame; basket frame 164: Fabric; basket fabric 170: Space; base frame space 211: First Direction 212: Second direction; second linear direction 220: Second child seat; Second child carrier 225: Second seat mount; seat mount; second pair of seat adjustment components; second pair of sliding seat mounts; second pair of seat mounts 310: Infant car seat; First child carrier; Second child carrier; Child carrier 320: Baby car seat adapter 330: Hanging basket; First child support device; Second child support device; Child support device 400: First seat adjustment assembly; seat adjustment assembly; first pair of seat adjustment assemblies 401: First seat adjustment assembly; assembly; first pair of seat adjustment assemblies 405: Sheath 410: Adjusting actuator; actuator; lever-operated adjusting actuator 411: First end 412, 624, 1017, 1130, 1320: latches 413: Internal protrusion 414: Relative latch end; latch end 415: Inclined surface 416, 614, 1134, 1164: Compression springs 417: Arm 420, 620: Track follower 422: Axle 425: Grip Arm 430: Handle fitting 432: Internal cavity 434: Protrusion 435, 1020, 1250: Tracks 436, 517, 1022: concave part 437, 444: Stoppers 438: Outermost wall 442: Seat mount socket; socket; first seat mount socket 500: Baby car seat adapter; adapter 510: Seat Mounting Structure 515: Supporting parts; supporting components 520: Infant Car Seat Structure 530: Adapter latch; latch 600: Second seat adjustment assembly; second pair of seat adjustment assemblies 601: Second seat adjustment assembly; second seat mounting assembly; second pair of seat adjustment assemblies 610: Adjust the actuator; actuator 611: Latch protrusion 612: Rails 613: Pivot 615: Pivot 616, 755: Cover 622, 626, 1116: Trench 623:Latch 640: Steering Pole 642: Torsion Spring 645:foot base 701: Adjust the steering knuckle 710: Folding trigger actuator; folding actuator 712: Folding trigger; folding actuator 714: Cable stopper; folding actuator 715: Bar stop 720: Cable; Folding actuator 722: Roller; Folding actuator 723: Cable pole 724: Cable pin 725: Pivot 730: Height adjustment actuator button; Height adjustment button; Height adjustment actuator 731: Support leg or protrusion 732: Sliding gear; Height adjustment actuator 733: Sidewall 734: Compression spring; height adjustment actuator 736: Forming teeth; Height adjustment actuator 740: First steering knuckle housing 742: First steering knuckle housing extension 750: Second Steering Knuckle Housing 752: Second Steering Knuckle Housing Extension 800: Cup Holder Assembly 810: Cup holder mounting hardware 815, 1011: Shaft 910: Child car seat frame; frame; seat frame 915: Child Seat 920: Seat rims; left and right side seat rims 922: Seat and wheel hub insert; insert 925: Insert recess; release actuator; actuator; seat release actuator 930: Cross Link 940: Seat tilt actuator; Seat reclining actuator; Reclining actuator 950: Support plate 952: Foot pedal 954: Locking and fixing anchor 955: Connecting rod hole 956: Flange 957: Anchoring Hole 960: Seat panel 962: Inter-leg strip 970: Backplate 973: Waist belt 977: Shoulder straps 980: Fabric seat backrest 982: Seat frame concave pocket 984: Seat back pocket 985: Fabric side panel 986: Seat panel dent 990: Locking component 1010: Rooftop rim; First rooftop rim; Second rooftop rim 1012: Pivot Hub 1014: Pivot Arm 1015: Fabric; Canopy fabric 1016: Translational mounting component; movable mounting component 1018: Prominent part 1030: Rotatable bow frame 1032: Fixed bow frame 1034: Reinforced Components 1110: Seat and wheel hub body 1112: Recessed part of rotating piece; recessed part 1114: Forming teeth 1118: Tongue-shaped component 1120: Body; Release actuator body 1122: Tilt Guide 1125: Finger-shaped recess 1140: Rotating piece; Second piece 1142: Pivot axis 1144: Piece mounting component lever 1146: Leaning against the trolley; trolley 1150: Leaning Component 1152: First Cover 1154: Second Shield 1155: First insertion point 1156: Second insertion site 1158: Opening 1160: Pivoting piece; First piece 1162: Pin Carrier 1165: Opening; slot 1166: Pin 1200: auxiliary basket; basket; storage basket 1203: Base 1205: Storage volume 1210: Framework; Basket framework 1211, 1212: Sections 1215: Slot 1217: Internal passage or pipe wall 1220: basket body; basket body 1222: Sidewall; Reinforced sidewall 1224: Sleeve 1226: Press-out flange 1227: Overlapping and locking of the cover; cover; various parts 1228: Locking component; Reversible locking component 1230: Grip 1235: Coupler 1240: Seat Mount Adapter 1305: Location 1310: Latch actuator 1343: Flexural latch; latch 1400: Basket rim; rim 1402: Frame fasteners or clamps 1410: First seat mounting adapter 1415: Wheel hub insert 1420: Second seat mounting adapter 1430: Third seat mounting adapter D: Distance H: Height

Claims

1. A stroller system (100) for transporting one or more children, the stroller comprising: a foldable frame (105) including a left side, a right side, a handle (110), at least one front support leg (130), and two rear support legs (140); a plurality of wheels (135, 145) attached to the at least one front support leg and the two rear support legs for supporting the foldable frame; and an adjustable steering knuckle (115) located on at least one of the right side or the left side of the foldable frame (105) and between an adjustable grip portion (112) of the handle and a fixed portion (114) of the handle, and connecting the adjustable grip portion (112) of the handle to the fixed portion (114) of the handle, wherein the adjustable grip portion includes a gripping portion (113), and wherein the adjustable steering knuckle includes: A height adjustment actuator (730, 732, 734, 736) to change the height of the gripping part relative to a surface on which the wheels are located when the foldable frame is unfolded; and a folding actuator (710, 712, 714, 720, 722) to actuate the folding of the foldable frame and the operation is independent of the height adjustment actuator.

2. The stroller system of claim 1 further comprises: a first pair of translatable seat mounts (125) connected to the foldable frame and configured to translate along a first direction (211) relative to the handle; and a second pair of translatable seat mounts connected to the foldable frame and configured to translate along a second direction different from the first direction.

3. The trolley system of claim 2, wherein the first pair of lateral seat mounts, the second pair of lateral seat mounts and the adjustable steering knuckle are positioned along two linear portions of the trolley frame (from the at least one front outrigger to the grip portion).

4. A stroller system (100) for transporting one or more children, the stroller comprising: a foldable frame (105) including a handle (110), at least one front support leg (130) and two rear support legs (140); a plurality of wheels (135, 145) attached to the at least one front support leg and the two rear support legs to support the foldable frame; and an adjustable steering knuckle (115) located between an adjustable grip portion (112) of the handle and a fixed portion (114) of the handle, and connecting the adjustable grip portion of the handle to the fixed portion of the handle, wherein the adjustable grip portion includes a gripping portion (113), and wherein the adjustable steering knuckle includes: A height adjustment actuator (730, 732, 734, 736) for changing the height of the grip portion relative to a surface where the wheels are located when the foldable frame is unfolded; and a folding actuator (710, 712, 714, 720, 722) for actuating the folding of the foldable frame, the operation of which is independent of the height adjustment actuator; wherein the height adjustment actuator includes: a sliding gear having teeth formed around a periphery of the sliding gear, wherein the sliding gear is movable within the adjusting steering knuckle in a direction parallel to a pivot axis about which the adjustable grip portion pivots relative to the fixed portion of the grip; and shaped teeth inside the adjusting steering knuckle that engage with the teeth on the sliding gear.

5. The trolley system of claim 1, wherein actuation of the folding actuator allows the trolley frame to be folded into a configuration, wherein the at least one front support leg and the handle are engaged with each other within a 15-degree angle.

6. The trolley system of claim 1, wherein the adjusting steering knuckle further includes a cover, and wherein the trolley system further includes a cup holder mount integrated into the cover for the adjusting steering knuckle.

7. The trolley system of claim 1 further includes a cup holder assembly attached to the adjustment steering knuckle, wherein the cup holder assembly is rotatable relative to the adjustment steering knuckle.

8. The trolley system of claim 1, wherein the adjusting steering knuckle is located behind the front outrigger, the adjustable grip portion of the handle is located behind the adjusting steering knuckle, and the fixed portion of the handle is located in front of the adjusting steering knuckle.

9. A stroller system (100) for transporting one or more children, the stroller comprising: a foldable frame (105) including a handle (110), at least one front support leg (130) and two rear support legs (140); a plurality of wheels (135, 145) attached to the at least one front support leg and the two rear support legs to support the foldable frame; and an adjustable steering knuckle (115) located between an adjustable grip portion (112) of the handle and a fixed portion (114) of the handle, and connecting the adjustable grip portion (112) of the handle to the fixed portion (114) of the handle, wherein the adjustable grip portion includes a gripping portion (113), and wherein the adjustable steering knuckle includes: A first steering knuckle housing (740) fixed to the adjustable grip portion (112), and a second steering knuckle housing (750) fixed to the fixed grip portion (114), the first steering knuckle housing (740) being rotatable relative to the second steering knuckle housing; a height adjustment actuator (730, 732, 734, 736) for changing the height of the grip portion relative to a surface on which the wheels are located when the foldable frame is unfolded by rotating the first steering knuckle housing (740) relative to the second steering knuckle housing (750); and a folding actuator (710, 712, 714, 720, 722) for actuating the folding of the foldable frame, the operation of which is independent of the height adjustment actuator.

10. The stroller system of claim 9, comprising a first pair of translatable seat mounts (125) connected to the foldable frame and configured to translate along a first direction (211) relative to the handle; and a second pair of translatable seat mounts connected to the foldable frame and configured to translate along a second direction different from the first direction.

11. The trolley system of claim 10, wherein the first pair of lateral seat mounts, the second pair of lateral seat mounts, and the adjustable steering knuckle are positioned along two linear portions of the trolley frame (from the at least one front outrigger to the grip portion).

12. As in request item 9, the cart system, wherein: The height adjustment actuator includes a button that can be pushed into the adjustment steering knuckle; and the folding actuator includes a trigger that can be pulled along one of the exteriors of the adjustment steering knuckle.

13. The trolley system of claim 12, wherein the trigger is connected to a folding trigger actuator, which, when the trigger is pulled, rotates in the adjusting steering knuckle and pulls a cable to fold the foldable frame.

14. The trolley system of claim 12, wherein the folding actuator comprises: A cable pole, which rotates around a pivot point and pulls a cable when the trigger is pulled.

15. The trolley system of claim 9, wherein the height adjustment actuator comprises: A sliding gear having teeth formed around the periphery of one of the sliding gears, wherein the sliding gear is movable within the adjusting steering knuckle in a direction parallel to a pivot axis about which the adjustable grip portion pivots relative to the fixed portion of the grip; and shaped teeth inside the adjusting steering knuckle that engage with the teeth on the sliding gear.

16. The trolley system of claim 9, wherein actuation of the folding actuator allows the trolley frame to fold into a configuration, wherein the at least one front support leg and the handle are engaged with each other within a 15-degree angle.

17. The trolley system of claim 9, wherein the adjusting steering knuckle further includes a cover, and wherein the trolley system further includes a cup holder mount integrated into the cover for the adjusting steering knuckle.

18. The trolley system of claim 9 further includes a cup holder assembly attached to the adjustment steering knuckle, wherein the cup holder assembly is rotatable relative to the adjustment steering knuckle.

19. The trolley system of claim 9, wherein the adjusting steering knuckle is located behind the front outrigger, the adjustable grip portion of the handle is located behind the adjusting steering knuckle, and the fixed portion of the handle is located in front of the adjusting steering knuckle.

20. A method of operating a trolley (100) having a foldable frame (105) supported by a plurality of wheels (135, 145), the foldable frame (105) having a left side and a right side, the method comprising: A height adjustment actuator (730, 732, 734, 736) located on a handle (110) of the trolley and at an adjustable steering knuckle (115) on at least one of the left and right sides of the foldable frame (105) is actuated to change the height of a grip portion (113) relative to a surface on which the wheels are located when the foldable frame is unfolded, wherein the grip portion is located on an adjustable grip portion of the handle; and a folding actuator (710, 712, 714, 720, 722) is actuated at the adjustable steering knuckle to fold the foldable frame of the trolley, wherein the height adjustment actuator and the folding actuator can operate independently of each other.

21. The method of claim 20, wherein actuating the height adjustment actuator comprises pushing a button into the adjustment steering knuckle.

22. The method of claim 20, wherein actuating the folding actuator comprises pulling a trigger along a surface of the adjusting steering knuckle.

23. The method of claim 20, further comprising: attaching a first child carrier to a first pair of sliding seat mounts connected to the foldable frame of the stroller; and mounting a second child carrier to a second pair of sliding seat mounts connected to the foldable frame without removing the first child carrier, wherein each of the first child carrier and the second child carrier can be mounted in the first pair of sliding seat mounts and the second pair of sliding seat mounts in a forward and rearward orientation.

24. The method of claim 23 further comprises: translating the first child carrier along a first direction while attaching to the first pair of translatable seat mounts; and translating the second pair of translatable seat mounts along a second direction different from the first direction.

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