Convertible baby carriage assembly

Abstract

A convertible stroller assembly is convertible between a stroller configuration and a trailer configuration. The assembly includes a stroller frame that includes a pair of laterally opposed hubs. The assembly further includes a plurality of wheels coupled to the stroller frame and including at least one removable front wheel. The assembly further includes a seat frame adjustably coupled to the stroller frame. The seat frame is adjustable relative to the pair of laterally opposed hubs between a first position and a second position lower than the first position. The assembly is transitionable between (i) a stroller configuration in which the front wheel is coupled to the stroller frame and the seat frame is in the first position and (ii) a trailer configuration in which the front wheel is absent and the seat frame is in the second position having a lower center of gravity than the first position.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of U.S. Provisional Application No. 63 / 363,163, filed April 18, 2022, the entire contents of which are hereby incorporated by reference. Technical Field

[0003] The present invention relates generally to strollers, and more particularly to convertible strollers. Background Art

[0004] Strollers can be used to provide a seat for a child while traveling or relaxing. While a stroller can be pushed by a person walking behind it, it can also be propelled by a person running or jogging. Instead of being pushed, a stroller can also be pulled, for example as a trailer alongside a bicycle.

[0005] There remains a need for strollers that can be used for different purposes and that are convertible for a variety of uses. Utility Model Content

[0006] The present invention describes strollers, and in particular convertible strollers.

[0007] In an embodiment, the present invention describes a convertible stroller assembly that is convertible between a stroller configuration and a trailer configuration. The assembly includes a stroller frame that includes a pair of laterally opposed wheel hubs. The assembly further includes a plurality of wheels that are coupled to the stroller frame and include at least one removable front wheel. The assembly further includes a seat frame that is adjustably coupled to the stroller frame. The seat frame is adjustable between a first position and a second position lower than the first position relative to the pair of laterally opposed wheel hubs. The assembly is convertible between (i) a stroller configuration in which the front wheels are coupled to the stroller frame and the seat frame is in the first position and (ii) a trailer configuration in which the front wheels are not present and the seat frame is in the second position having a lower center of gravity than the first position. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 1A is a conceptual perspective view of a convertible stroller assembly in a stroller configuration.

[0009] 1B is a conceptual side view of the stroller assembly of FIG. 1A .

[0010] Figure 1C 1A is a front side view of the stroller assembly.

[0011] Figure 1D is a top view of the stroller assembly of FIG. 1A .

[0012] Figure 2A is a conceptual perspective view of the convertible stroller assembly of FIG. 1A in a trailer configuration.

[0013] Figure 2B yes Figure 2A Conceptual side view of a stroller assembly.

[0014] Figure 2C yes Figure 2A Front and side view of a stroller assembly.

[0015] Figure 2D yes Figure 2A A top view of the stroller assembly.

[0016] Figure 3 is a conceptual perspective view of a stroller including the convertible stroller assembly of FIG. 1A in a stroller configuration.

[0017] Figure 4 is a conceptual perspective view of a trailer including the convertible stroller assembly of FIG. 1A in a stroller configuration.

[0018] The detailed description is set forth with reference to the accompanying drawings. The drawings are provided for illustration purposes only and merely depict exemplary embodiments of the present invention. The drawings are provided to facilitate understanding of the present invention and should not be considered to limit the breadth, scope, or applicability of the present invention. The same reference numerals are used to indicate similar, but not necessarily identical, or identical, components. Different reference numerals may be used to identify similar components. Various embodiments may utilize elements or components that are different from those illustrated in the drawings, and some elements and / or components may not be present in various embodiments. Depending on the context, the use of singular terms to describe a component or element may encompass a plurality of such components or elements and vice versa. DETAILED DESCRIPTION

[0019] The present invention describes a stroller assembly that can be converted for different uses. For example, the stroller assembly can be converted between a walking or jogging mode and a trailer mode (for example, for use with a bicycle).

[0020] Certain strollers can be converted into trailers. However, such strollers may have limited functionality as trailers because they may not be able to adjust their center of gravity to achieve adequate stability.

[0021] The stroller assembly according to the present invention can change its center of gravity in different use modes and thus has relatively high stability in both trailer mode and stroller mode. In addition, the stroller assembly according to the present invention can be relatively more compact, easier to manufacture, or relatively simple to convert and use in different modes.

[0022] In an embodiment, the present invention describes a convertible stroller assembly that is convertible between a stroller configuration and a trailer configuration. The assembly includes a stroller frame that includes a pair of laterally opposed wheel hubs. The assembly further includes a plurality of wheels that are coupled to the stroller frame and include at least one removable front wheel. The assembly further includes a seat frame that is adjustably coupled to the stroller frame. The seat frame is adjustable between a first position and a second position lower than the first position relative to the pair of laterally opposed wheel hubs. The assembly is convertible between (i) a stroller configuration in which the front wheels are coupled to the stroller frame and the seat frame is in the first position and (ii) a trailer configuration in which the front wheels are not present and the seat frame is in a second position having a lower center of gravity than the first position.

[0023] Thus, in stroller mode, the passenger can sit in a higher position, and in trailer mode, the passenger can sit in a lower position. The shift in the passenger's weight can result in a shift in the center of gravity, and thus the stroller can provide sufficient stability in both jogging and trailer modes.

[0024] In one embodiment, a stroller assembly includes a rear frame assembly, a front frame assembly, and a handle hinged around a pair of laterally opposed wheel hubs. A seat frame can be secured to the rear frame assembly and can slide along the rear frame assembly between two different positions. The rear frame assembly can include corresponding detents, tabs, or locks to stably hold the seat frame in each position. In some embodiments, the seat frame may not be slidable, but rather can be securely secured by removal and reinstallation at each different position.

[0025] The stroller can be foldable, for example by relatively rotating the wheel hubs around parts of the stroller frame. For example, in the stroller mode, the stroller can be folded for storage.

[0026] When used in trailer mode (for example, by removing the front wheels), the center of gravity can be adjusted to provide greater stability. For example, the seat frame can be lowered.

[0027] The stroller assembly may further include a canopy bar for holding a canopy, and the canopy may be foldable. In some embodiments, the canopy is foldable in the stroller mode but is fixed in the trailer mode to provide additional protection to the occupant in the trailer mode.

[0028] The front wheels are removable. In some embodiments, in trailer mode, the wheels can be stowed in the rear or side storage areas or storage clips. The stroller assembly can further receive a hitch from a bicycle, for example, at the front portion or front wheel hub.

[0029] The handle may be adjustable or foldable and may provide additional protection for the occupant's body or head, for example, when the seat is in a lowered position.

[0030] Therefore, the stroller assembly according to the present invention can be converted between the stroller mode and the trailer mode without substantially departing from the functionality provided by the stroller. Compared to conventional strollers or trailers, the stroller assembly according to the present invention can be relatively more flexible, lightweight and compact.

[0031] Figure 1A is a conceptual perspective view of the convertible stroller assembly 10 in the stroller configuration. Figure IB is a conceptual side view of the stroller assembly 10 of Figure 1A. Figure 1C is a front side view of the stroller assembly 10 of FIG. 1A . Figure 1D is a top view of the stroller assembly 10 of FIG. 1A .

[0032] The convertible stroller assembly 10 is capable of being configured in a stroller configuration (shown in Figures 1A-1D) and a trailer configuration ( Figures 2A to 2D The assembly 10 includes a stroller frame 12 including a pair of laterally opposed wheel hubs 14.

[0033] The stroller frame 12 can be formed from one or more materials, such as metal, alloy, plastic, carbon fiber, composite materials, or combinations thereof. The wheel hub 14 can be formed from one or more materials, such as metal, alloy, plastic, carbon fiber, composite materials, or combinations thereof. In some embodiments, the stroller frame 12 is formed from an alloy and the wheel hub 14 is formed from plastic.

[0034] The hub 14 can be formed, for example, as a left-right mirror-image pair having corresponding openings, edges, surfaces, or contours. In one embodiment, the hub 14 is formed as a substantially cylindrical shell, wherein one end of the respective cylinder is closed and the other end is open. For example, the closed end of the hub 14 can face outward, while the open end can face inward, for example, to receive one or more components of the assembly 10.

[0035] In some embodiments, one or more portions or ends of the stroller frame 12 are received by corresponding windows, openings, slots, or tabs defined in the hub 14. In some embodiments, the hub 14 can be rigid, but have some resiliency or flexibility to allow limited or defined relative movement between components of the assembly 10, such as to permit folding and unfolding of the assembly 10.

[0036] To facilitate describing the convertibility of assembly 10, only the basic structural components are shown in Figures 1A to 1D. Elements used to finish the stroller assembly into a stroller are not shown in Figures 1A to 1D, but it will be understood that the structural components can be covered with suitable materials, linings, foams, screens, meshes, fabrics, padding, or other decorative elements.

[0037] The assembly 10 further includes a plurality of wheels 16 coupled to the stroller frame 12 and including at least one removable front wheel 18. The plurality of wheels 16, including the front wheel 18, can be formed from any suitable material or combination of materials. In some embodiments, the assembly 10 includes no more than two rear wheels and one front wheel 18. In other embodiments, the assembly 10 includes more than two rear wheels and more than one front wheel 18. In some embodiments, the assembly 10 includes only one rear wheel and two front wheels 18. In some embodiments, the front wheel 18 is laterally centered relative to the two outer rear wheels, such as on a tricycle.

[0038] The wheels of the plurality of wheels 16 located at the rear of the stroller may not be removable. For example, the rear wheels may not be removable by the user without using tools or damaging the stroller assembly 10. For example, the front wheels 18 may be removable and coupled by the user without disassembling the assembly 10 or requiring specialized tools or equipment, or damaging the stroller assembly 10. In some embodiments, the user 10 may need to use a tool, such as a hex wrench, a screwdriver, or some other tool, to securely couple and remove the front wheels 18 from the stroller frame 12.

[0039] In an embodiment, each of the pair of laterally opposing wheel hubs 14 is located between the at least one front wheel 18 and the at least two rear wheels in a direction from the at least one front wheel 18 to the at least two rear wheels. In some embodiments, each of the pair of laterally opposing wheel hubs 14 is offset relative to a geometric center between the at least one front wheel 18 and the at least two rear wheels in a direction toward the at least two rear wheels. For example, the wheel hubs 14 may be closer to the rear wheels of the plurality of wheels 16 than to the front wheels 18.

[0040] The assembly further includes a seat frame 20 adjustably coupled to the stroller frame 12. The seat frame 20 is capable of being adjusted relative to the pair of laterally opposed wheel hubs 14 between a first position (shown in Figures 1A to 1D) and a second position (shown in Figures 1A to 1D) that is lower than the first position. Figures 2A to 2D). For example, the seat frame 20 can be removed from one of the first position or the second position and re-coupled in the other of the first position or the second position. In some embodiments, the seat frame 20 is slidably coupled to the stroller frame 12 and is slidable relative to a pair of laterally opposed wheel hubs 14 between a first position and a second position lower than the first position.

[0041] The assembly 10 is capable of being in (i) a stroller configuration in which the front wheels 18 are coupled to the stroller frame 12 and the seat frame 20 is in a first position (shown in Figures 1A-1D) and (ii) a second position in which the front wheels 18 are not present and the seat frame 12 is in a lower center of gravity than the first position (shown in Figures 1A-1D). Figures 2A to 2D 10 and any occupants. In the stroller configuration, the user can walk, jog, or run behind the stroller assembly 10 to propel the stroller assembly 10 and any occupants forward. In the trailer configuration, the user can attach the stroller (now used as a trailer) to the back of a bicycle (or other vehicle) and can pull the trailer and any occupants forward behind the bicycle (or other vehicle).

[0042] Figure 2A is a conceptual perspective view of the convertible stroller assembly 10 of FIG. 1A in a trailer configuration 10a. Figure 2B yes Figure 2A A conceptual side view of a stroller assembly 10a is shown. Figure 2C yes Figure 2A FIG. 1 is a front side view of the stroller assembly 10 a. Figure 2D yes Figure 2A FIG. 1 is a top view of the stroller assembly 10 a.

[0043] Starting with the configuration 10 shown in Figures 1A to 1D, the seat frame 20 can be lowered to the second position (for example, after being removed from the stroller frame 12), and the front wheels 18 removed from the assembly stroller frame 12 to produce configuration 10a. The removal of the front wheels 18 and the lowering of the seat frame 20 can be performed in any order. In some embodiments, the seat frame 20 is not removed from the stroller frame 12 and remains attached to the stroller frame 12 during movement or lowering. For example, the seat frame 20 can slide along the stroller frame 12. Vice versa, Figures 2A to 2D , the seat frame 20 can be raised to a first position and the front wheels 18 coupled to the stroller frame 12 to produce the configuration 10a. The coupling of the front wheels 18 and the raising of the seat frame 20 can be performed in any order and with or without removing the seat frame 20 from the stroller frame 12.

[0044] The stroller frame 12 can include several frame portions or subassemblies. For example, the stroller frame 12 can include a rear frame assembly 22 coupled to a pair of laterally opposed wheel hubs 14. In some embodiments, the plurality of wheels 16 includes at least two rear wheels coupled to the rear frame assembly 22. In some embodiments, the plurality of wheels 16 includes no more than two rear wheels coupled to the rear frame assembly 22. In some embodiments, the plurality of wheels 16 includes exactly two rear wheels (and a single front wheel 18) coupled to the rear frame assembly 22.

[0045] The seat frame 20 can be slidably coupled to the rear frame assembly 22, e.g., slidable along the rear frame assembly 22 toward and away from the pair of laterally opposed wheel hubs 14 (in the directions of the double-headed dashed arrows shown in FIG. 1B ). For example, the rear frame assembly 22 can define parallel rails or slots, and portions of the seat frame 20 can be engaged in the rails or slots to slide along the rails or slots.

[0046] In an embodiment, the rear frame assembly 22 includes a rear axle 24 coupled between a pair of opposing rear bars 26. At least two rear wheels can be coupled to the rear axle 24. Each of the pair of opposing rear bars 26 can define a respective hub end 28 coupled to a respective hub in the pair of laterally opposing hubs 14 and a respective axle end 30 coupled to the rear axle 24. As seen in Figures 1A and 1B, each of the opposing rear bars 26 can be angled downward from a respective hub in the pair of laterally opposing hubs 14 to the rear axle 24.

[0047] The opposing rear bars 26 can ultimately support and bear against the seat frame 20 and any occupant. In some embodiments, each rear bar in the pair of opposing rear bars 26 defines a corresponding channel. The seat frame 20 can be slidably secured between and within the corresponding channels of the pair of opposing rear bars.

[0048] In an embodiment, the stroller frame 12 includes an upper frame assembly 32 coupled to the pair of laterally opposing wheel hubs 14. For example, the upper frame assembly 32 can extend upward and / or rearward from the laterally opposing wheel hubs 14. For example, a user can hold or grasp a portion of the upper frame assembly 32 to guide the movement of the stroller assembly 10 in the stroller mode. The upper frame assembly 32 can also act as a truss to redistribute load or weight and further support the lower frame assembly 22 and the stroller frame 12 as a whole.

[0049] In some embodiments, the upper frame assembly 32 includes a crossbar 34 coupled between a pair of opposing upper bars 36. In some such embodiments, each of the pair of opposing upper bars 36 defines a respective hub end 38 coupled to a respective one of the pair of laterally opposing hubs and a respective crossbar end 40 coupled to the crossbar 34. In some embodiments, each of the opposing upper bars angles upward from a respective one of the pair of laterally opposing hubs 14 to the crossbar 34. The crossbar 34 can provide lateral support and stability to the upper assembly 32 and the stroller frame 12 as a whole.

[0050] The crossbar 34 may also be used to couple or secure other components. For example, the assembly 10 may include a handle 42 coupled to the upper frame assembly 32. The handle 42 may include a u-shaped bar rotatably coupled to the crossbar 34.

[0051] In some embodiments, the assembly 10 further includes a fold lock assembly 44 coupled to the upper frame assembly 32. The fold lock assembly 44 prevents the convertible stroller assembly 10 from folding about the pair of laterally opposed wheel hubs 14. The fold lock assembly 44 may include a button 46 configured to temporarily overcome resistance to folding. For example, a cable, chain, pin, or some other mechanism that prevents one or more portions of the stroller frame 12 from folding about the wheel hubs 14 may ultimately be mechanically coupled to the button 46, and pressing the button 46 may disengage the cable or pin, allowing folding to proceed.

[0052] In some embodiments, the assembly 10 further includes a canopy bar 48 secured to the stroller frame 12 or the seat frame 20. In some embodiments, the canopy bar 48 is secured to the seat frame 20 so that the canopy bar 48 slides with the seat frame. In some embodiments, the canopy bar 48 can be secured to both the stroller frame 12 and the seat frame 20. For example, as the seat frame 20 moves, a portion or end of the canopy bar 48 can move through a tube, channel, or slot extending through or along a portion of the stroller frame 12 (e.g., within or along the rear bar 26). In some embodiments, the canopy bar 48 is secured to the seat frame 20 and is configured to move relative to the stroller frame 12 along with the seat frame 20.

[0053] The canopy bar 48 defines a U-shaped body that extends upwardly from the stroller frame 12 or from the seat frame 20 .

[0054] The canopy bar 48 can be rotatably or fixedly mounted relative to the wheel hub 14. For example, the canopy bar 48 may or may not be rotatable relative to the wheel hub 14. In some embodiments, the canopy bar 48 can rotate about the wheel hub 14 only when the seat frame 20 is raised, and can be locked or unable to rotate about the wheel hub 14 when the seat frame 20 is lowered. For example, when the seat frame 20 is lowered, a portion of the canopy bar 48 can be pulled into another portion of the stroller frame 12, such as the rear bar 26, which can prevent rotational movement of the remainder of the canopy bar 48.

[0055] Although not shown in Figures 1A to 2D, it should be understood that fabric or lining can be secured to the canopy rods 48 to form the canopy. The fabric or lining may be intended to be removably coupled by the user, or it may not be intended to be removable by the user. Thus, the fabric or lining can be removably or permanently secured to the canopy rods 48.

[0056] In some embodiments, the stroller frame 12 includes a front frame assembly 52 coupled to the pair of laterally opposed wheel hubs 14. The front frame assembly 52 can facilitate distributing the load or weight of the occupant along the stroller frame 12. The front frame assembly 52 can also facilitate folding the assembly 10, such as for storage or transport. For example, one or both of the front frame assembly 52 and the rear frame assembly 32 can be configured to rotate toward each other about the wheel hubs 14 to ultimately fold the stroller assembly 10, and rotate away from each other to unfold the stroller assembly.

[0057] One or more components may be coupled to the front frame assembly 52. ​​For example, the front wheel 18 may be removably coupled to the front frame assembly 52. ​​The front frame assembly 52 may further include a fork 54 to which the front wheel 18 may be removably coupled. For example, the fork 54 may define an opening through which a front axle may be coupled, wherein the front wheel 18 is rotatably coupled about the front axle. The front axle (or ultimately the wheel 18) may be removed from the fork 54 by a user.

[0058] In some embodiments, the front frame assembly 52 further includes a front hub 56. The fork 54 can be coupled to the front hub 56. The front hub 56 can define a coupling slot 58, and the coupling slot 58 can be configured to receive a coupling rod 60 ( Figures 2A to 2D ). The hitch bar 60 can extend from a bicycle or another vehicle and thus can be used to secure the stroller assembly 10 in the trailer configuration 10a to the bicycle or vehicle.

[0059] In some embodiments, the front frame assembly 52 further includes a footrest bar 62. In some such embodiments, the footrest bar 62 can be coupled to the front hub 56, such as rotatably coupled to the front hub 56. Thus, an occupant in the seat frame 20 can rest their feet on the footrest bar 62.

[0060] Thus, the stroller assembly according to the present invention is convertible between a stroller mode or configuration and a trailer mode or configuration.

[0061] Figure 3 FIG1 is a conceptual perspective view of a stroller 100 including the convertible stroller assembly 10 of FIG1A in a stroller configuration. The stroller 100 includes a liner 70 secured to the assembly 10. The liner 70 can include a film, fabric, membrane, shell, mesh, netting, foam, padding, or any other decorative or upholstery material or structure, or a combination thereof. The stroller 100 includes a seat 80 including a liner (which can be similar to the liner 70) secured to the seat assembly 20.

[0062] Figure 4 FIG. 1 is a conceptual perspective view of a trailer 100a including the convertible stroller assembly 10 of FIG. 1A in the trailer configuration 10a. Figure 4 As seen in FIG, the front wheel 18 is absent (removed from the assembly 10), and the hitch bar 60 is coupled to the assembly 10, ready to be towed by a bicycle or vehicle.

[0063] One or more illustrative embodiments of the present invention have been described above. The embodiments described above are merely illustrative of the scope of the present invention and are not intended to limit it in any way. Therefore, variations, modifications, and equivalents of the embodiments disclosed herein are also within the scope of the present invention.

[0064] While the present invention has been described with reference to several embodiments, those skilled in the art will understand that the present invention is not limited to such disclosed embodiments. Rather, the present invention may be modified to incorporate any number of variations, alterations, substitutions, or equivalent arrangements not described herein, but which are commensurate with the spirit and scope of the present invention. Furthermore, while various embodiments of the present invention have been described, it should be understood that aspects of the present invention may include only some of the described embodiments. Accordingly, the present invention should not be construed as limited by the foregoing description, but only by the scope of the appended claims.

[0065] Example 1 may include a convertible stroller assembly comprising: a stroller frame including a pair of laterally opposing wheel hubs; a plurality of wheels coupled to the stroller frame and including at least one removable front wheel; and a seat frame adjustably coupled to the stroller frame and capable of adjusting between a first position and a second position lower than the first position relative to the pair of laterally opposing wheel hubs, wherein the convertible stroller assembly is capable of converting between (i) a stroller configuration in which the front wheels are coupled to the stroller frame and the seat frame is in the first position and (ii) a trailer configuration in which the front wheels are not present and the seat frame is in the second position having a lower center of gravity than the first position.

[0066] Embodiment 2 may include embodiment 1, wherein the stroller frame includes a rear frame assembly coupled to the pair of laterally opposed wheel hubs.

[0067] Embodiment 3 may include any of embodiments 1-2, wherein the seat frame is slidably coupled to the rear frame assembly and is slidable along the rear frame assembly toward and away from the pair of laterally opposed wheel hubs.

[0068] Embodiment 4 may include any of embodiments 1-3, wherein the plurality of wheels includes at least two rear wheels coupled to the rear frame assembly.

[0069] Example 5 may include any of Examples 1 to 4, wherein each of the pair of laterally opposing hubs is located between the at least one front wheel and the at least two rear wheels in a direction from the at least one front wheel to the at least two rear wheels.

[0070] Embodiment 6 may include any of embodiments 1-5, wherein the rear frame assembly includes a rear axle coupled between a pair of opposing rear bars, and wherein the at least two rear wheels are coupled to the rear axle.

[0071] Example 7 may include any of Examples 1-6, wherein each rear rod of the pair of opposing rear rods defines a respective hub end coupled to a respective hub of the pair of laterally opposing hubs and a respective axle end coupled to the rear axle.

[0072] Example 8 may include any of Examples 1-7, wherein each of the opposing rear bars is angled downwardly from a corresponding hub of the pair of laterally opposing hubs to the rear wheel axle.

[0073] Example 9 may include any of Examples 1-8, wherein each rear bar of the pair of opposing rear bars defines a respective channel, and wherein the seat frame is slidably secured between and within the respective channels of the pair of opposing rear bars.

[0074] Embodiment 10 may include any of embodiments 1-9, wherein the stroller frame includes an upper frame assembly coupled to the pair of laterally opposed wheel hubs, and wherein the upper frame assembly includes a crossbar coupled between a pair of opposed upper bars.

[0075] Example 11 may include any of Examples 1-10, wherein each upper rod of the pair of opposing upper rods defines a respective hub end coupled to a respective hub of the pair of laterally opposing hubs and a respective crossbar end coupled to the crossbar.

[0076] Example 12 may include any of Examples 1-11, wherein each of the opposing upper bars is angled upward from a corresponding hub of the pair of laterally opposing hubs to the cross bar.

[0077] Example 13 may include any of Examples 1 to 12, further comprising a fold lock assembly coupled to the upper frame assembly, wherein the fold lock assembly prevents the convertible stroller assembly from folding about the pair of laterally opposing wheel hubs, and wherein the fold lock assembly includes a button configured to temporarily overcome resistance to folding.

[0078] Embodiment 14 may include any of embodiments 1-13, further comprising a canopy bar secured to the stroller frame or the seat frame.

[0079] Embodiment 15 can include any of embodiments 1-14, wherein the canopy bar defines a U-shaped body extending upward from the stroller frame or from the seat frame.

[0080] Example 16 can include any of Examples 1-14, wherein the canopy bar is fixed to the seat frame and configured to move with the seat frame relative to the stroller frame.

[0081] Example 17 may include any of Examples 1-16, further comprising a front frame assembly coupled to the pair of laterally opposing hubs.

[0082] Example 18 may include any of Examples 1-17, wherein the at least one front wheel is removably coupled to the front frame assembly.

[0083] Example 19 may include any of Examples 1-18, wherein the front frame assembly is foldable relative to the rear frame assembly about the pair of laterally opposing hubs.

[0084] Embodiment 20 may include any of embodiments 1-19, wherein the front frame assembly further comprises a front hub defining a coupling slot, wherein the coupling slot is configured to receive a coupling rod.

[0085] Embodiment 21 may include any of embodiments 1-20, wherein the front frame assembly further comprises a footrest bar.

[0086] Embodiment 22 may include any of embodiments 1-21, further comprising at least one decorative material coupled to at least a portion of the convertible stroller assembly, wherein the decorative material comprises at least one of a lining, foam, screen, mesh, fabric, or padding.

Claims

1. A convertible stroller assembly, characterized in that The convertible stroller assembly comprises: a stroller frame including a pair of laterally opposed wheel hubs; a plurality of wheels coupled to the stroller frame and including at least one removable front wheel; and a seat frame adjustably coupled to the stroller frame and adjustable relative to the pair of laterally opposed wheel hubs between a first position and a second position lower than the first position, wherein the convertible stroller assembly is capable of converting between (i) a stroller configuration in which the front wheels are coupled to the stroller frame and the seat frame is in a first position and (ii) a trailer configuration in which the front wheels are not present and the seat frame is in a second position having a lower center of gravity than the first position.

2. The convertible stroller assembly according to claim 1, wherein The stroller frame includes a rear frame assembly coupled to the pair of laterally opposed wheel hubs.

3. The convertible stroller assembly according to claim 2, wherein The seat frame is slidably coupled to the rear frame assembly and is slidable along the rear frame assembly toward and away from the pair of laterally opposed wheel hubs.

4. The convertible stroller assembly according to claim 2, wherein The plurality of wheels includes at least two rear wheels coupled to the rear frame assembly.

5. The convertible stroller assembly according to claim 4, wherein Each of the pair of laterally opposed wheel hubs is located between the at least one front wheel and the at least two rear wheels in a direction from the at least one front wheel to the at least two rear wheels.

6. The convertible stroller assembly according to claim 5, wherein Each of the pair of laterally opposed wheel hubs is offset relative to a geometric center between the at least one front wheel and the at least two rear wheels in a direction toward the at least two rear wheels.

7. The convertible stroller assembly according to claim 6, wherein The rear frame assembly includes a rear axle coupled between a pair of opposing rear bars, and wherein the at least two rear wheels are coupled to the rear axle.

8. The convertible stroller assembly according to claim 7, wherein Each rear rod of the pair of opposing rear rods defines a respective hub end coupled to a respective hub of the pair of laterally opposing hubs and a respective axle end coupled to the rear axle.

9. The convertible stroller assembly according to claim 8, wherein Each of the opposing rear bars is angled downwardly from a corresponding one of the pair of laterally opposing hubs to the rear wheel axle.

10. The convertible stroller assembly according to claim 9, wherein Each rear bar of the pair of opposing rear bars defines a respective channel, and wherein the seat frame is slidably secured between and within the respective channels of the pair of opposing rear bars.

11. The convertible stroller assembly of claim 1, wherein The stroller frame includes an upper frame assembly coupled to the pair of laterally opposed wheel hubs, and wherein the upper frame assembly includes a crossbar coupled between a pair of opposed upper bars.

12. The convertible stroller assembly of claim 11, wherein Each upper rod of the pair of opposing upper rods defines a respective hub end coupled to a respective hub of the pair of laterally opposing hubs and a respective crossbar end coupled to the crossbar.

13. The convertible stroller assembly of claim 12, wherein Each of the opposing upper bars is angled upwardly from a corresponding one of the pair of laterally opposing hubs to the crossbar.

14. The convertible stroller assembly of claim 13, wherein The convertible stroller assembly further includes a fold lock assembly coupled to the upper frame assembly, wherein the fold lock assembly prevents the convertible stroller assembly from folding about the pair of laterally opposing wheel hubs, and wherein the fold lock assembly includes a button configured to temporarily overcome resistance to folding.

15. The convertible stroller assembly of claim 1, wherein The convertible stroller assembly further includes a canopy bar secured to the stroller frame or the seat frame.

16. The convertible stroller assembly of claim 15, wherein The canopy bar defines a U-shaped body extending upward from the stroller frame or from the seat frame, and wherein the canopy bar is fixed to the seat frame and is configured to move with the seat frame relative to the stroller frame.

17. The convertible stroller assembly of claim 1, wherein The convertible stroller assembly further includes a front frame assembly coupled to the pair of laterally opposed wheel hubs.

18. The convertible stroller assembly of claim 17, wherein The front frame assembly further includes a front hub defining a coupling slot, wherein the coupling slot is configured to receive a coupling rod.

19. The convertible stroller assembly of claim 18, wherein The front frame assembly further includes a footrest bar.

20. The convertible stroller assembly of claim 19, wherein The convertible stroller assembly further includes at least one trim material coupled to at least a portion of the convertible stroller assembly, wherein the trim material includes at least one of a lining, foam, screen, mesh, fabric, or padding.

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