Tandem stroller with sliding carrier

Abstract

Stroller, comprehensive: an upper frame part with a first and a second side strut, which are spaced apart from each other; a lower frame section with a first and a second side brace spaced apart from each other; and a pair of primary connecting components, adapted to carry an associated primary seat in selectively detachable fastening, wherein each of the primary connecting components is slidably attached to the upper frame part.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to strollers. More particularly, the present disclosure relates to modular strollers that are selectively configurable between a single seat configuration capable of supporting a single seat and a tandem seat configuration capable of supporting two seats simultaneously. BACKGROUND

[0002] Strollers designed to convert from a single-seat to a tandem-seat configuration are well known in the art. Some manufacturers have offered tandem strollers that are not easily configurable to a single-seat configuration. Some manufacturers have offered other tandem strollers that position the seats side by side or fixedly in line with each other. Such tandem strollers are typically bulky, not easy to maneuver, and do not offer the ability to selectively position the seats to face forward or toward the parent, as the user desires. Furthermore, while some existing strollers can be converted between a single-seat and a tandem-seat configuration, these strollers typically require time-consuming and complex steps.In fact, in some such strollers, the seats are generally not designed to be removed from the frame during normal use and require the use of special tools or special skills to accomplish this.

[0003] Some other existing strollers accommodate multiple occupants by providing a seat for one occupant and a standing platform or similar for a second occupant. Other strollers provide a seat for a first occupant and a seat for a second occupant suspended below and behind the first seat. Such strollers have obvious safety problems and are often uncomfortable. Another disadvantage of such strollers is that the under-seat storage space available in single strollers is reduced by the presence of the second seat, eliminating or significantly reducing the usable basket or net space for belongings.

[0004] It would be desirable to provide a stroller that is selectively configurable between a single-seat configuration and a tandem-seat configuration, and such a stroller that allows this without any loss of comfort for the user pushing the stroller. In particular, it would be desirable if the selective configuration of the stroller could be achieved without the need for special tools or additional components, since the purchase and storage of such tools or components can be both costly and cumbersome. Accordingly, it is desirable to provide a stroller with connecting components that can be easily moved (e.g., by pushing, turning, or any other suitable method) to quickly and easily configure a single-seat stroller to a tandem-seat stroller, or vice versa, as desired.It would also be desirable if the connecting components were suitable to accommodate a wide variety of seats in different orientations as desired. SHORT SUMMARY

[0005] Disclosed herein are strollers that may include a frame and connecting components, and that are adapted to support one or more seats. The connecting components may be adapted to support the seat(s) in a selectively releasable attachment. In this manner, a single stroller assembly may be convertible from a single seat configuration to a tandem seat configuration, such as by performing one or more of the following steps: (a) sliding connecting component(s) upwardly relative to the frame to position the connecting component(s) into a position to receive a primary seat thereon, and (b) rotating a lower extension relative to the frame to position connecting component(s) thereon into a position to receive a secondary seat thereon.Sliding movement of one or more connecting components relative to the frame can increase the distance between the connecting components, thereby creating an acceptable separation between the primary and secondary seats for a variety of possible configurations (e.g., with one or both seats facing forward or one or both seats facing rearward toward the stroller user).

[0006] In accordance with the foregoing, strollers are disclosed herein in exemplary embodiments. According to certain embodiments of the present disclosure, an exemplary stroller includes: an upper frame portion including first and second side struts spaced apart from one another; a lower frame portion including first and second side struts spaced apart from one another; and a pair of primary connecting components adapted to support an associated primary seat in selectively releasable attachment thereto, the primary connecting components being slidably attached to the upper frame portion.

[0007] In certain designs, the first side strut of the upper frame section can be hingedly connected to the first side strut of the lower frame section. The second side strut of the upper frame section can be hingedly connected to the second side strut of the lower frame section.

[0008] According to embodiments of the disclosure, each of the primary connecting components may be permanently attached to the upper frame member. A first of the primary connecting components may be slidably attached to the first side strut of the upper frame member. A second of the primary connecting components may be slidably attached to the second side strut of the upper frame member.

[0009] According to embodiments of the disclosure, the stroller may further comprise secondary connecting components adapted to support an associated secondary seat in selectively releasable attachment thereto, wherein each of the secondary connecting components is pivotally attached to the lower frame portion. The secondary connecting component may be non-releasably attached to the lower frame portion.

[0010] According to embodiments of the disclosure, the stroller may further include a lower extension, the lower extension including the secondary connecting components. The lower extension may also include first and second support members spaced apart from each other. The first support member may be pivotally attached to the first side brace of the lower frame portion. The second support member may be pivotally attached to the second side brace of the lower frame portion. A first of the secondary connecting components may be disposed at a distal end of the first support member. A second of the secondary connecting components may be disposed at a distal end of the second support member. The lower extension may further include a crossbar extending between and connecting the first and second support members.

[0011] In certain constructions, each of the secondary connecting components may be rotatable about an axis parallel to the first and second side struts of the lower frame member. In alternative constructions, each of the secondary connecting components may be rotatable about an axis perpendicular to the first and second side struts of the lower frame member.

[0012] According to embodiments of the disclosure, the primary interconnect components may be positioned at least partially above the secondary interconnect components. The primary interconnect components may be positioned at least partially behind the secondary interconnect components. The primary interconnect components may be translatable relative to the upper frame portion between an uppermost position and a lowermost position. Translating the primary interconnect components relative to the upper frame portion between an uppermost position and a lowermost position may selectively change a distance between the primary interconnect components and the secondary interconnect components. The primary interconnect components may be disposed proximate a front end of the upper frame portion when in the lowermost position.The primary connecting components may be located between the front end and a rear end of the upper frame member when in the uppermost position.

[0013] According to certain embodiments of the present disclosure, a modular stroller may be selectively configurable between a single seat configuration and a tandem seat configuration. An exemplary modular stroller comprises: an upper frame portion; a lower frame portion; and a lower extension including at least one secondary connection component, wherein the lower extension is adapted to be rotated between a folded position in which the lower extension is directly adjacent and substantially parallel to the lower frame portion, and an unfolded position in which the lower extension is angled relative to the lower frame portion and the at least one secondary connection component is oriented upwardly.

[0014] According to embodiments of the disclosure, the modular stroller may further comprise at least one primary connection component. The at least one primary connection component may be adapted to slide relative to the upper frame part. The at least one primary connection component may be adapted to slide between a lowermost position in the single seat configuration and an uppermost position in the tandem seat configuration.

[0015] In certain constructions, the at least one primary connection component may be adapted to support an associated primary seat in a selectively releasable attachment therewith. The at least one primary connection component may be slidably and non-releasably attached to the upper frame member. The at least one primary connection component may be positioned at least partially above and at least partially behind the at least one secondary connection component. The at least one primary connection component may be disposed proximate a front end of the upper frame member when in the lowermost position. The at least one primary connection component may be disposed between the front end and a rear end of the upper frame member when in the uppermost position.

[0016] According to other particular embodiments of the present disclosure, an exemplary stroller system includes: a primary seat; a secondary seat; and a stroller, the stroller comprising: an upper frame portion having first and second side struts spaced apart from each other; a lower frame portion having first and second side struts spaced apart from each other; a pair of primary connecting components adapted to support the primary seat in selectively releasable attachment thereto, the primary connecting components slidably attached to the upper frame portion; and a lower extension having a pair of secondary connecting components adapted to support the secondary seat in selectively releasable attachment thereto, the lower extension being rotatably attached to the lower frame portion.

[0017] In certain designs, the sliding movement of the primary connecting components relative to the upper frame member may be restrained when the primary seat is selectively attached to the primary connecting components.

[0018] Other aspects of the invention will be apparent to those skilled in the art upon review of the accompanying drawings, the appended claims and the additional description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The foregoing and other features of the present disclosure will become more apparent from the following description and the appended claims, taken in conjunction with the accompanying drawings. Recognizing that these drawings illustrate several examples in accordance with the disclosure and are therefore not to be considered limiting its scope, the disclosure will be described below with additional specificity and detail with reference to the accompanying drawings. Fig. 1 is a front perspective view of a stroller in a single seat configuration with primary interconnecting components supporting a primary seat in a lowermost position and a lower extension in a folded position according to the disclosure. Fig. 2 is a perspective front view of the stroller of Fig. 1 wherein the primary connecting components support the primary seat in an uppermost position and the lower extension in a folded position. Fig. 3 is a perspective front view of the stroller of Fig. 1, wherein the primary connecting components support the primary seat in the uppermost position, and the lower extension in an extended position such that secondary connecting components located thereon are directed upwards. Fig. 4 is a perspective front view of the stroller of Fig. 1 in a tandem seat configuration, with the primary connecting components supporting the primary seat in the uppermost position and the secondary connecting components supporting a secondary seat. Fig. 5-8 are perspective side views of the upper frame part of the stroller of Fig. 1, illustrating the movement of the primary seat from its position in the single seat configuration to its position in the tandem seat configuration. Fig. 5 represents the primary connecting components that support the primary seat in the lowest position. Fig. 6 represents the primary seat detachably separated from the primary connecting components. Fig. 7 represents the primary connection in the uppermost position with the primary seat releasably released. Fig. 8 represents the primary connecting components that support the primary seat in the uppermost position. Fig. 9 is a perspective view of the upper frame part of the stroller of Fig. 1 with primary seat removed. Fig. 10 is an exploded view of the primary connecting components of the stroller of Fig. 1. Fig. 11 is a perspective side view of the lower frame part of the stroller of Fig. 1, wherein the lower extension is rotated into a folded position such that the lower extension is directly adjacent and substantially parallel to the lower frame member. Fig. 12 is a front perspective view of the lower frame part of the stroller of Fig. 1, wherein the lower extension is rotated into a folded position such that the lower extension is directly adjacent and substantially parallel to the lower frame member. Fig. 13 is a perspective side view of the lower frame part of the stroller of Fig. 1, wherein the lower extension is rotated to a deployed position such that the lower extension is angled relative to the lower frame member and the secondary connecting components are directed upwardly. Fig. 14 is a front perspective view of the lower frame part of the stroller of Fig. 1, wherein the lower extension is rotated to a deployed position such that the lower extension is angled relative to the lower frame member and the secondary connecting components are directed upwardly. Fig. 15 is a partially exploded perspective view of the lower front part of the stroller of Fig. 1, which represents the lower extension separate from the lower frame part of the stroller. Fig. 16 is an exploded view of the lower extension and secondary connecting components of the stroller of Fig. 1. Fig. 17 is a front perspective view of a second exemplary lower frame member with the secondary connecting components rotated to a folded position such that the secondary connecting components are directed downward. Fig. 18 is a front perspective view of the second exemplary lower frame part of Fig. 17, wherein the secondary connecting components are rotated into an extended position in which the secondary connecting components are directed upwards. Fig. 19 is a perspective side view of the second exemplary lower frame part of Fig. 18, wherein the secondary connecting components are rotated into a deployed position such that in this position the secondary connecting components are directed upwards. DETAILED DESCRIPTION

[0020] In the following detailed description, reference is made to the accompanying drawings, which form a part of this description. Like symbols refer to like components throughout the drawings unless the context dictates otherwise. The illustrative examples described in the detailed description and drawings are not intended to be limiting and are for purposes of explanation. Other examples may be utilized and other changes may be made without departing from the spirit or scope of the subject matter presented herein. It is to be understood that the aspects of the present disclosure, as generally described herein and shown in the drawings, may be arranged, substituted, combined, and configured in a variety of different configurations, each of which is expressly contemplated and constitutes a part of this disclosure.

[0021] It should be noted that some of the terms used here may be relative terms. For example, the terms "upper" and "lower" are relative to each other, meaning that an upper component is at a higher elevation than a lower component in a given orientation, but these terms may change if the device is inverted. An intermediate component, on the other hand, is always located between an upper and a lower component, regardless of orientation. The terms "horizontal" and "vertical" are used to indicate a direction relative to an absolute reference point, i.e., the ground. However, these terms should not be construed to require structures to be absolutely parallel or absolutely perpendicular to each other. For example, a first vertical structure and a second vertical structure are not necessarily parallel to each other.The terms 'top' and 'bottom' or 'base' are used to refer to surfaces, where top is always higher than bottom / the base with respect to an absolute reference, i.e., the surface of the Earth. The terms 'up' or 'upward' and 'downward' or 'downward' are also relative to an absolute reference point; upward always means against the Earth's gravity. The term 'parallel' is to be understood in the layman's sense of two surfaces maintaining a generally constant distance from each other, rather than in the strict mathematical sense that such surfaces would never intersect when extended to infinity. The terms 'functional' and 'adapted' and similar terms are used herein to describe that a particular component has certain structural features designed to perform a specific function.Such components should be designed to have the expressed structure, with the designated function being considered as part of the structure.

[0022] As used herein, a component that is "permanently attached" to the stroller means that the component is designed to be permanently attached such that the component cannot be selectively detached by a user without requiring special tools, special skills, or at least partial destruction of the component or the stroller.

[0023] According to aspects of the disclosure, exemplary embodiments of strollers and stroller systems are described in Fig. 1-16 in various forms. Generally speaking, the stroller 10 is designed for the safe transport of one or two infants or children. The stroller 10 may be defined by a frame that may include an upper frame portion 110 and a lower frame portion 120. One or more primary connecting components 130 may be incorporated into an aspect of the stroller 10. One or more secondary connecting components 140 may be incorporated into a lower extension 150 of the stroller 10.

[0024] As in the Fig. 1-4, the frame of the stroller 10 may be generally defined by an upper frame portion 110 and a lower frame portion 120. The upper frame portion 110 may include a first side brace 112 and a second side brace 114. The first and second side braces 112, 114 of the upper frame portion 110 may be spaced apart from each other. The lower frame portion 120 may include a first side brace 122 and a second side brace 124. The first and second side braces 122, 124 of the lower frame portion 120 may be spaced apart from each other.

[0025] The first side strut 112 of the upper frame portion 110 may be foldably connected to the first side strut 122 of the lower frame portion 120 (e.g., by a first connection 111). The second side strut 114 of the upper frame portion 110 may be foldably connected to the second side strut 124 of the lower frame portion 120 (e.g., by a second connection 113). In this manner, the stroller 10 may be folded about one or more connections between the first side struts of the upper and lower frame portions and the second side struts of the upper and lower frame portions. As will be apparent to those skilled in the art, the upper and lower frame portions may be foldably connected to one another in a variety of different ways using different mechanisms. For example, the first and second connections 111, 113 may be, for example, pivoting connections, sliding joints, or the like.In this way, the first side strut 112 of the upper frame part 110 can be pivotally or slidably connected to the first side strut 122 of the lower frame part 120 so that it is rotatable and foldable with respect thereto, and the second side strut 114 of the upper frame part 110 can be pivotally or slidably connected to the second side strut 124 of the lower frame part 120 so that it is rotatable and foldable with respect thereto.

[0026] In some embodiments, the stroller can be folded without removing primary or secondary seats. In other embodiments, removal of the secondary seat may facilitate improved foldability (i.e., a more compact fold) of the stroller or may otherwise be necessary to facilitate complete folding of the stroller. Similarly, rotating the lower extension 150 to the folded position may, in some embodiments, facilitate improved foldability (i.e., a more compact fold) of the stroller or may otherwise be necessary to facilitate complete folding of the stroller.

[0027] It is conceivable that the primary seat need not be removed to fold the stroller. In particular, the stroller may be collapsible with the primary seat in either the lowest or highest position. In some embodiments, positioning the primary seat in the highest position prior to folding may facilitate better foldability (i.e., a more compact fold) of the stroller. As will be appreciated by those skilled in the art, folding the stroller may reduce the overall size of the stroller, thereby allowing a user to more easily store the stroller (e.g., in the trunk of a vehicle).

[0028] The stroller 10 includes one or more primary connecting components 130. With reference to Fig. 1-4, the exemplary stroller 10 includes a pair of primary link components 130. As will be explained in more detail herein, the primary link components 130 are slidably attached to the upper frame portion 110 of the stroller 10 so as to be slidable along the frame in the direction of arrows 50, 60. If more than one primary link component 130 is provided, such as the pair of primary link components 130 described herein, each of the primary link components 130 may be adapted to move independently of all other primary link components 130, or alternatively, may be adapted to move simultaneously with one or more other primary link components 130.

[0029] The primary connecting components 130 are adapted to carry a primary seat 131 in selectively releasable attachment thereto (see e.g. Fig. 1-4). That is, the primary connecting components 130 are designed to collectively secure the primary seat 131 to the upper frame member 110, while simultaneously allowing the primary seat 131 to be quickly and easily removed without the need for special tools or time-consuming procedures. That is, the primary seat 131 can be attached and removed from the stroller 10 as desired.

[0030] In Fig. 1, the primary seat 131 is shown as being removably attached to the primary connecting components 130 such that the primary seat 131 faces forward (i.e., such that an occupant of the primary seat would face away from a user pushing the stroller). However, it should be understood that the primary connecting components 130 may be configured such that the primary seat 131 can be reversibly attached to the primary connecting components 130 in either a forward-facing orientation ( Fig. 1) or in a rear-facing orientation where the user pushing the stroller would be facing the occupant of the primary seat.

[0031] In Fig. 1, the primary connecting components 130 are selectively positioned in a lowermost position along the upper frame portion 110 of the stroller 10. Selectively positioning the primary connecting components 130 in the lowermost position can position the releasably attached primary seat 131 substantially centrally on the stroller. As such, selectively positioning the primary connecting components 130 in the lowermost position may be preferred when the stroller is to be used in a single-seat configuration.

[0032] The stroller 10 further comprises a lower extension 150. As will be explained in more detail herein, the lower extension 150 is pivotally attached to the lower frame part 120 of the stroller 10 so that it is rotatable with respect thereto in the direction of the arrows 30, 40 (see, for example, Fig. 3 and Fig. 4).

[0033] The lower extension 150 includes one or more secondary connection components 140. With reference to Fig. 1-4, the exemplary stroller 10 includes a pair of secondary connecting components 140.

[0034] The secondary connection components 140 are adapted to carry a secondary seat 141 in selectively releasable connection therewith (see e.g. Fig. 4). That is, the secondary connecting components 140 are designed to collectively secure the secondary seat 141 to the frame, while simultaneously allowing the secondary seat 141 to be quickly and easily removed without the need for special tools or time-consuming procedures. In this way, the secondary seat 141 can be attached and removed from the stroller 10 as desired.

[0035] In Fig. 4, the secondary seat 141 is shown removably attached to the secondary connecting components 140 such that the secondary seat 141 faces forward (i.e., such that an occupant of the primary seat would face away from a user pushing the stroller). However, it should be understood that the secondary connecting components 140 may be configured such that the secondary seat 141 can be reversibly attached to the secondary connecting components 140 in either a forward-facing orientation ( Fig. 4) or in a rearward facing orientation where the user pushing the stroller would be facing the occupant of the secondary seat.

[0036] In Fig. 1, the lower extension 150 is shown in the folded position. As will be explained in more detail herein, the lower extension 150 can be positioned so that it is directly adjacent and substantially parallel to the first and second side struts 122, 124 of the lower frame portion 120 of the stroller 10 (i.e., in the direction of arrows 50, 60). Consequently, each of the secondary connecting components 140 can also be positioned directly adjacent and along respective first and second side struts 122, 124 of the lower frame portion 120 of the stroller 10.

[0037] An exemplary stroller 10 is shown in Fig. 1, with the primary connecting component 130 in the lowermost position and the lower extension 150 in the folded position. Such a configuration is referred to herein as a single seat configuration. In the single seat configuration, the stroller may be adapted to receive only one primary seat 131 in selectively releasable attachment to the primary connecting components 130. Again, the lower extension 150 may be folded so as not to spatially interfere with the primary seat 131, which may be positioned substantially centrally on the stroller frame. Alternatively, the lower extension in the single seat configuration may be selectively unfolded to provide additional space beneath the primary seat 131, for example, to increase the carrying capacity of a net or basket located beneath the primary seat.

[0038] Referring to Fig. 2, it can now be seen that the primary connecting components 130 have been translated along the upper frame portion 110 of the stroller (i.e., in the direction of arrow 50) to selectively position the primary connecting components 130 in an uppermost position along the upper frame portion 110 of the stroller 10. Selectively positioning the primary connecting components 130 in the uppermost position can position the releasably attached primary seat 131 closer to the top of the stroller than when the primary connecting components 130 are in the lowermost position.

[0039] The distance between the primary connecting components 130 and the secondary connecting components 140 can be varied by sliding the primary connecting component 130 between the uppermost position and the lowermost position. In particular, sliding the primary connecting components 130 upward on the upper frame portion 110 of the stroller 10 (i.e., in the direction of arrow 50) can increase the distance between the primary connecting components 130 and the secondary connecting components 140 compared to when the primary connecting components 130 are in the lowermost position. Consequently, selectively positioning the primary connecting components 130 in the uppermost position may be preferable when it is desired to use the stroller in a tandem seating configuration.

[0040] Fig. 3 illustrates the lower extension 150 in the deployed or upward position. As will be explained in more detail herein, the lower extension 150 can be positioned so that it is angled relative to the lower frame portion 120 of the stroller 10. Thus, when the lower extension 150 is in the deployed position, the secondary connecting components 130 can be longitudinally spaced from the lower frame portion 120 and directed upward (i.e., in the direction of arrow 30).

[0041] The exemplary stroller 10 is in Fig. 3 with the primary connecting component 130 in the uppermost position and the lower extension 150 in the deployed position. Such a configuration is referred to herein as a tandem seat configuration. In the tandem seat configuration, the stroller may be adapted to accommodate both a primary seat 131 selectively releasably attached to the primary connecting components 130 and a secondary seat 141 selectively releasably attached to the secondary connecting components 140 of the lower extension 150.

[0042] The exemplary stroller 10 is in Fig. 4 in the tandem seat configuration. In the tandem seat configuration, the primary connecting components 130 can be selectively translated along the upper frame portion 110 of the stroller 10 so that they are in the uppermost position. The primary connecting components 130 can receive a primary seat 131 in selectively releasable attachment thereto. The lower extension 150 can be selectively rotated relative to the lower frame portion 120 of the stroller 10 so that it is in the deployed position. The secondary connecting components 140 can receive a secondary seat 141 in selectively releasable attachment thereto. In this manner, the primary connecting components 130 can be positioned at least partially above (i.e., in the direction of arrow 30) and at least partially behind (i.e., in the direction of arrow 50) the secondary connecting components 140.

[0043] The exemplary stroller 10 illustrated in the accompanying drawings includes a pair (i.e., two) primary connecting components 130 and a pair (i.e., two) secondary connecting components 140, although it is understood that as few or as many primary and secondary connecting components as desired may be provided. The number of primary and secondary connecting components may generally correspond to the number of complementary mating components on the seats to be used with the stroller 10.

[0044] The primary and secondary connecting components may be any suitable means for selectively releasably securing the primary and secondary seats to the stroller frame. For example, the primary and secondary seats may each have their own mating components, which may be shaped to complement the respective primary and secondary connecting components of the stroller. The primary and secondary connecting components are preferably of the type that are permanently attached to the stroller frame and the lower extension, respectively. Suitable primary and secondary connecting components include, but are not limited to, locking tabs, friction fittings, twist locks, magnetic components, or the like.

[0045] The primary and secondary seats can be of any desired size, shape, or configuration. That is, the primary and secondary connecting components can be designed for selectively detachable attachment to an infant seat, toddler seat, baby seat, crib, stroller, car seat, baby carrier, other stroller seat, or similar.

[0046] As will be apparent to those skilled in the art from reference to the accompanying drawings, the stroller may include other components or members conventional in the art, such as a basket, a net, a canopy, a peephole, or a parking brake.

[0047] Referring again to Fig. 3 and Fig. 4, the lower frame portion 120 of the stroller 10 may include a first rear strut 172 and a second rear strut 174. The first rear strut 172 may be foldably (e.g., pivotably or slidably) connected to one or both first side struts 112, 122 of the upper and lower frame portions 110, 120 (e.g., by a first connection 111). The second rear strut 174 may be foldably (e.g., pivotably or slidably) connected to one or both second side struts 114, 124 of the upper and lower frame portions 110, 120 (e.g., by a second connection 113). One or more crossbars 176, 178 may connect the first and second rear struts 172, 174 to each other. One or more rear wheels 170 may be provided at the outermost ends of each of the first and second rear struts 172, 174.

[0048] With continued reference to Fig. 3 and Fig. 4, a lower brace structure 190 may also be incorporated into an aspect of the stroller 10, for example, to support a carrycot beneath the seat(s) of the stroller. The lower brace structure 190, in certain embodiments, may include a first lower brace 192 and a second lower brace 194, one or more of which may be hingedly (e.g., pivotally or slidably) connected to the lower frame portion 120 of the stroller 10. The brace structure 190 may further include a crossbar 196 interconnecting the first lower brace 192 and the second lower brace 194.

[0049] With reference to Fig. 5, a handle 180 may be provided near the first end 118 of the upper frame portion 110 of the stroller 10. The handle 180 may, for example, be a telescopic handle. In certain embodiments, the handle 180 may be hingedly (e.g., pivotably or slidably) connected to the upper frame portion 110 of the stroller 10. For example, as shown in Fig. 5, the handle 180 may be foldably connected to the first side strut 112 of the upper frame part 110 (e.g., by a connection 182) and foldably connected to the second side strut 114 of the upper frame part 110 (e.g., by a connection 184).

[0050] Fig. 5-8 illustrate how the primary connecting components 130 can be selectively translated along the upper frame portion 110 of the stroller 10 (i.e., in the direction of arrows 50, 60) to selectively position the primary connecting components 130 in the uppermost or lowermost position.

[0051] Again, a pair of primary connecting components 130 is illustrated. One (e.g., a first of the illustrated pair) of the primary connecting components 130 may be slidably attached to the first side strut 112 of the upper frame portion 110. Another (e.g., a second of the illustrated pair) of the primary connecting components 130 may be slidably attached to the second side strut 114 of the upper frame portion 110.

[0052] In certain constructions, each of the primary connecting components 130 may preferably be non-removably attached to the upper frame member 110. That is, one (e.g., a first of the illustrated pair) of the primary connecting components 130 may preferably be slidably and non-removably attached to the first side brace 112 of the upper frame member 110, and another (e.g., a second of the illustrated pair) of the primary connecting components 130 may preferably be slidably and non-removably attached to the second side brace 114 of the upper frame member 110.

[0053] In Fig. 5, the primary connecting components 130 are selectively positioned in the lowermost position with the primary seat 131 releasably attached thereto. In the lowermost position, the primary connecting components 130 may be positioned near a front end 116 of the upper frame part 110. In this manner, Fig. 5 the upper frame part 110 of the stroller in the single seat configuration.

[0054] The primary connecting components 130 are configured to be slidable relative to the upper frame portion 110. In particular, the primary connecting components 130 may be slidable toward a rear end 118 of the upper frame portion 110 (i.e., in the direction of arrow 50) as desired. Similarly, the primary connecting components 130 may be slidable toward the front end 116 of the upper frame portion 110 (i.e., in the direction of arrow 60) as desired.

[0055] When the primary seat 131 is attached to the primary connecting components 130 as shown in Fig. 5 and Fig. 7, movement of the primary connecting components 130 relative to the upper frame portion 110 may be prevented or delayed. Limiting or preventing movement of the primary connecting components 130 relative to the upper frame portion 110 when the primary seat 131 is attached to the primary connecting components 130 may thereby prevent or delay unwanted movement of the primary seat 131 and an occupant therein, e.g., by another occupant of the stroller. This may help ensure the safety of an occupant or objects placed in the primary seat by limiting or preventing unwanted movement of the primary seat relative to the upper frame portion 110.

[0056] In other words, the stroller may be constructed, adapted, or configured such that movement of the primary connecting components 130 relative to the upper frame part 110 is only possible when no seat is attached thereto. For the purpose of further clarification: Due to the attachment of the primary seat 131 to the primary connecting components 130 in Fig. 5 is a movement of the primary connecting components 130 in Fig. 5 may not be possible.

[0057] In Fig. 6, the primary seat 131 has been selectively released from the primary connecting components 130, which remain selectively positioned in the lowermost position. As explained above, after the primary seat 131 has been selectively released, the primary connecting components 130 can now be slid along the upper frame portion 110 from the lowermost position to the uppermost position (i.e., in the direction of arrow 50).

[0058] In Fig. 7, the primary connecting components 130 have been displaced along the upper frame portion 110 (i.e., in the direction of arrow 50) and are now selectively positioned in the uppermost position. In the uppermost position, the primary connecting components 130 may be positioned farther from the front end 116 and closer to the rear end 118 of the upper frame portion 110 than in the lowermost position (see FIG. Fig. 5 and Fig. 7). In other words, in the uppermost position, the primary connecting components 130 may be arranged between the front end 116 and the rear end 118 of the upper frame part 110. In Fig. 7, the primary seat 131 remains released and is now positioned over the primary connecting components 130 and is ready to be attached thereto.

[0059] In Fig. 8, the primary seat 131 has been selectively reattached to the primary connecting components 130, which remain selectively positioned in the uppermost position. In this way, Fig. 8 the upper frame part 110 of the stroller in the tandem seat configuration.

[0060] As explained above, with the primary seat 131 selectively attached to the primary connection components 130, movement of the primary connection components 130 relative to the upper frame part 110 can be prevented or retarded. For the purpose of further clarification: Due to the attachment of the primary seat 131 to the primary connection components 130 in Fig. 8 is a movement of the primary connecting components 130 in Fig. 8 may not be possible.

[0061] Fig. 9 and Fig. 10 illustrate the mechanisms that can cause movement of the primary connecting components 130 relative to the upper frame member 110. For clarity, only the operation of the first side brace 112 of the upper frame member 110 and the primary connecting component 130 attached thereto will be identified or described. However, it should be understood that each of the first and second side braces 112, 114 of the upper frame member may be similarly configured. Likewise, it should be understood that each of the primary connecting components 130 may be similarly configured.

[0062] Each side strut of the upper frame portion 110 may include a rail 117 extending longitudinally (i.e., in the direction of arrows 50, 60) between the lowest and uppermost positions. The primary connecting components 130 may be configured to cooperatively engage respective ones of the rails 117. In particular, the primary connecting components 130 may be adapted for sliding movement along the rails 117. Each rail 117 may include one or more stops 119. Generally, each rail 117 may include at least two stops 119, with one stop corresponding to the lowest position and another stop corresponding to the uppermost position. The stops 119 may, for example, be formed as notches in the rail 117.

[0063] When a primary connecting component 130 is slid along a respective rail 117, an engagement tab 139 of the primary connecting component 130 can cooperatively engage one of the stops 119 in the rail. In this manner, the engagement tab 139 of the primary connecting component 130 can selectively lock the primary connecting component 130 in one of the lowermost and uppermost positions. In particular, a downward compressive force on the engagement tab 139 can be adjusted to cause movement of at least a portion of the engagement tab 139 into a desired one of the stops 119 in the rail 117 to cause the primary connecting component 130 to be selectively positioned in a desired one of the uppermost and lowermost positions. Fig. For example, Figure 9 shows the primary connecting component 130 attached to the first side strut 112 and engaging the rail 117 thereof to selectively position the primary connecting component 130 in the uppermost position.

[0064] Each primary connection component 130 may further be provided with a knob 138. The knob 138 may be cooperatively connected to a locking tab 138a configured to hold the primary connection component 130 in attachment to a primary seat 131 disposed on the primary connection component 130 (see, e.g., Fig. 5-8). For example, a downward compressive force on the button 138 may be adapted to cause an inward compressive movement of the locking tab 138a to cause a primary seat 131 attached to the primary connecting component 130 to be selectively released therefrom.

[0065] As previously explained, preventing or delaying movement of the primary interconnect components 130 when the primary seat 131 is attached thereto can help ensure that an occupant of the primary seat remains secure and is not undesirably moved. In particular, the primary interconnect components 130 can be constructed, adapted, or configured such that movement of the primary interconnect components 130 relative to the upper frame member 110 can only occur when no seat is attached thereto. For example, the knob 138 can be configured such that, when compressed (e.g., when a seat is attached to the primary interconnect component 130), the primary interconnect component 130 is prevented from moving.For example, compressing the knob 138 may prevent the engagement tab 139 from being depressed, rotated, or otherwise released, which may be necessary to effect sliding movement of the primary connecting component 130 relative to the upper frame member 110.

[0066] Fig. 11-14 illustrate how the lower extension 150 can be selectively rotated relative to the lower frame portion 120 of the stroller 10 (i.e., in the direction of arrows 30, 40) to selectively position the lower extension 150 in the folded or unfolded position.

[0067] The lower extension 150 may include a first support member 152 and a second support member 154. The first support member 152 may be rotatably attached to the first side strut 122 of the lower frame portion 120. The second support member 154 may be rotatably attached to the second side strut 124 of the lower frame portion 120. The first and second support members 152, 154 may be rotatably attached to the first and second side struts 122, 124 of the lower frame portion 120, respectively, between the upper and lower ends 126, 128 of the lower frame portion 120. In certain embodiments, the first and second support members 152, 154 may be rotatably mounted to the first and second side members 122, 124, respectively, of the lower frame member 120 closer to the lower end 128 of the lower frame member 120 than to the upper end 126 thereof, as shown in FIGS. Fig. 11-14.

[0068] In certain constructions, the lower extension 150 may preferably be non-removably attached to the lower frame portion 120. That is, the first support member 152 of the lower extension 150 may preferably be rotatably and non-removably attached to the first side brace 122 of the lower frame portion 120, and the second support member 154 of the lower extension 150 may preferably be rotatably and non-removably attached to the second side brace 124 of the lower frame portion 120. In certain constructions, the lower extension 150 (and each of the secondary connecting components 140) may be rotatable about an axis perpendicular to the first and second side braces 122, 124 of the lower frame portion 120.

[0069] The lower extension 150 may further include a crossbar 153 extending between and connecting the first side brace 152 and the second side brace 154. That is, the lower extension 150 may be substantially U-shaped.

[0070] Here, too, the lower extension 150 includes a pair of secondary connecting components 140. One (e.g., a first of the illustrated pair) of the secondary connecting components 140 may be disposed at a distal end of the first support member 152 of the lower extension 150. Another (e.g., a second of the illustrated pair) of the secondary connecting components 140 may be disposed at a distal end of the second support member 154 of the lower extension 150.

[0071] In Fig. 11 and Fig. 12, the lower extension 150 is selectively positioned in the folded position. In the folded position, the lower extension 150 can be positioned so that it is directly adjacent and substantially parallel to the first and second side struts 122, 124 of the lower frame portion 120 of the stroller 10 (i.e., in the direction of arrows 50, 60). As a result, each of the secondary connecting components 140 can also be directly adjacent and positioned along respective ones of the first and second side struts 122, 124 of the lower frame portion 120 of the stroller 10. In this manner, Fig. 11 and Fig. 12 the lower frame part 120 of the stroller in the single seat configuration.

[0072] One or more front wheels 160 may be provided at the outermost end of each of the first and second side members 122, 124 of the lower frame portion 100 of the stroller 10 (e.g., near the front end 128 of the lower frame portion 100), as shown in Fig. 12 is shown.

[0073] In Fig. 13 and Fig. 14, the lower extension 150 is selectively positioned in the unfolded or upward position. In the unfolded position, the lower extension 150 can be positioned so that it is angled relative to the lower frame portion 120 of the stroller 10. As a result, each of the secondary connecting components 140 can be positioned so that it is longitudinally spaced from the lower frame portion 120 of the stroller 10 and directed upward (i.e., in the direction of arrow 30). In this manner, Fig. 11 and Fig. 12 the lower frame part 120 of the stroller in the tandem seat configuration. That is, the secondary connection components 140 are ready to receive a secondary seat in selectively detachable connection therewith (see Fig. 4, which shows the secondary seat 141 in selectively releasable connection with the secondary connecting components 140).

[0074] Fig. 15 and Fig. 16 illustrate the mechanisms that can cause movement of the lower extension 150 relative to the lower frame portion 120. For clarity, only the operation of the first side brace 122 of the lower frame portion 120 and the attached first support member 152 of the lower extension 150 will be identified or described. However, it is understood that each of the first and second side braces 122, 124 of the lower frame portion may be similarly configured. Likewise, it is understood that each of the first and second support members 152, 154 may be similarly configured. Furthermore, it is understood that each of the secondary connecting components 140 may be similarly configured.

[0075] Each side strut of the lower frame member 110 may have a rotation mechanism 127 attached thereto. The lower extension 150 may be configured to cooperatively engage the rotation mechanisms 127. In particular, the lower extension 150 may be adapted for rotational movement relative to the rotation mechanism 127. Each rotation mechanism 127 may have a slotted groove 129.

[0076] When the lower extension 150 is rotated relative to the lower frame member 120, engagement mechanisms 159 attached to the lower extension 150 can cooperatively engage the grooves 129 in the rotation mechanisms 127. In this manner, the engagement mechanisms 159 of the lower extension 150 can selectively position and lock the lower extension 150 in one of the folded and deployed positions. For example, to rotate the lower extension from the folded position to the deployed position, a downward force (i.e., in the direction of arrow 40) on the crossbar 153 of the lower extension 150 can cause movement of the lower extension 150 and cause the lower extension 150 to rotate upward (i.e., in the direction of arrow 30) to the deployed position.Similarly, to rotate the lower extension back to the folded position, an upward force (i.e., in the direction of arrow 30) on the crossbar 153 of the lower extension 150 may cause the lower extension 150 to move and cause the lower extension 150 to rotate downward (i.e., in the direction of arrow 40) to the folded position.

[0077] A knob 158 may be provided on the lower extension 150. The knob 158 may, for example, be adapted to enable rotation of the lower extension 150 relative to the lower frame part 120. The knob 158 may be cooperatively connected to the engagement tab 159. For example, a downward compressive force on the knob 158 may be adapted to enable rotation of the lower extension 150.

[0078] Fig. 17-19 illustrates a second exemplary embodiment of the lower extension 150'. In this exemplary embodiment, the lower extension 150' generally includes an independent pair of secondary connecting components 140'. Again, the lower extension 150' (i.e., each of the secondary connecting components 140') can be selectively rotated relative to the lower frame portion 120 of the stroller 10 (i.e., in the direction of arrows 30, 40) to selectively position the lower extension 150' in the folded or unfolded position. It should be noted that, compared to the Fig. 12-14, the secondary connecting components 140 of the lower extension 150 each of the Fig. 17-19, the secondary connecting components 140' of the lower extension 150' are independent (ie, not interconnected) and individually rotatable with respect to a corresponding one of the first and second side struts 122, 124 of the lower frame part 120.

[0079] In certain constructions, the lower extension 150' (i.e., each of the individual secondary connection components 140') may preferably be non-removably attached to the lower frame member 120. In this embodiment, one (e.g., a first of the illustrated pair) of the secondary connection components 140' may be rotatably and non-removably attached directly to the first side brace 122 of the lower frame member 120. Another (e.g., a second of the illustrated pair) of the secondary connection components 140' may be rotatably and non-removably attached directly to the first side brace 124 of the lower frame member 120. In the embodiment shown in the Fig. 17-19, each of the secondary connecting components 140' is rotatable or foldable about an axis parallel to the first and second side struts 122, 124 of the lower frame member 120. Nevertheless, although not shown, it is also expressly contemplated that each of the secondary connecting components may be rotatable or foldable about an axis perpendicular to the first and second side struts of the lower frame member.

[0080] In Fig. 17, the lower extension 150' (i.e., each of the individual secondary connecting components 140') is selectively positioned in the folded position. In the folded position, each of the secondary connecting components 140' is rotated or folded to face downward. In this manner, Fig. 17 the lower frame part 120 of the stroller in the single seat configuration.

[0081] In Fig. 18 and Fig. 19, the lower extension 150' (i.e., each of the individual secondary connecting components 140') is selectively positioned in the deployed or upward position. In the deployed position, each of the secondary connecting components 140' may be directed upward (i.e., in the direction of arrow 30). In this way, Fig. 18 and Fig. 19 shows the lower frame portion 120 of the stroller in the tandem seat configuration. That is, the secondary connecting components 140 are ready to receive a secondary seat in selectively detachable attachment thereto.

[0082] While certain exemplary embodiments have been described, it is not intended that the claims be limited thereto, as it is intended that the claims be as broad in scope as the prior art will permit, and that the specification be read as such. That is, the foregoing description of specific embodiments will so fully disclose the general nature of the disclosure that others, by applying skill in the art, may readily modify and / or adapt such specific embodiments for various applications without undue experimentation and without departing from the general concept of the present disclosure. Therefore, it is intended that such adaptations and modifications be within the meaning and scope of equivalents of the disclosed embodiments based on the teachings and guidance presented herein.It is to be understood that the phraseology or terminology herein is for the purpose of description and not of limitation, so that the terminology or phraseology of the present description should be interpreted by those skilled in the art in light of the teachings and guidance provided.

[0083] One skilled in the art will understand that the components, process steps, and materials presented above can be varied by substituting equivalent components, steps, and materials capable of performing the same functions. One skilled in the art will also appreciate that the sizes and thicknesses of the components can be increased or decreased as needed for particular purposes. The claims hereof are intended to encompass all such equivalent components, process steps, and scales.

Claims

[1] Stroller, comprising: an upper frame member having first and second side members spaced apart from one another; a lower frame part with a first and a second side strut which are spaced from each other; and a pair of primary connecting components adapted to carry an associated primary seat in selectively releasable attachment thereto, wherein each of the primary connecting components is slidably mounted to the upper frame member. [2] A stroller according to claim 1, wherein the first side strut of the upper frame part is foldably connected to the first side strut of the lower frame part and the second side strut of the upper frame part is foldably connected to the second side strut of the lower frame part. [3] The stroller of claim 1, wherein each of the primary connecting components is permanently attached to the upper frame member. [4] The stroller of claim 1, wherein a first of the primary connecting components is slidably attached to the first side brace of the upper frame member and a second of the primary connecting components is slidably attached to the second side brace of the upper frame member. [5] The stroller of claim 1, further comprising a lower extension having a pair of secondary connecting components adapted to support an associated secondary seat in selectively releasable attachment thereto, each of the secondary connecting components being pivotally and non-releasably attached to the lower frame member. [6] A stroller according to claim 5, wherein the lower extension further comprises: first and second support members spaced apart from each other, the first support member being rotatably attached to the first side member of the lower frame part and the second support member being rotatably attached to the second side member of the lower frame part; and a crossbar extending between and connecting the first and second support members. [7] A stroller according to claim 5, wherein each of the secondary connecting components is rotatable about an axis parallel to the first and second side struts of the lower frame part. [8] A stroller according to claim 5, wherein each of the secondary connecting components is rotatable about an axis perpendicular to the first and second side members of the lower frame member. [9] The stroller of claim 5, wherein each of the primary link components is slidable relative to the upper frame member between an uppermost position and a lowermost position to selectively vary a distance between the primary link components and the secondary link components. [10] A stroller according to claim 9, wherein: each of the primary connecting components at least partially over and is positioned at least partially behind each of the secondary connecting components; and each of the primary connecting components is disposed near a front end of the upper frame member when in the lowermost position and is disposed between the front end and a rear end of the upper frame member when in the uppermost position. [11] A modular stroller selectively configurable between a single seat configuration and a tandem seat configuration, the stroller comprising: an upper frame part; a lower frame part; and a lower extension containing at least one secondary connecting component, the lower extension being adapted, to be rotated between a folded position in which the lower extension is directly adjacent and substantially parallel to the lower frame part, and an unfolded position in which the lower extension is angled relative to the lower frame part and the at least one secondary connecting component is directed upwardly. [12] A stroller according to claim 11, wherein the at least one secondary connecting component is adapted to support an associated secondary seat in selectively releasable attachment thereto. [13] The stroller of claim 11, wherein the lower extension is rotatably and non-removably attached to the lower frame member and the at least one secondary connecting component is disposed at a distal end of the lower extension. [14] The stroller of claim 11, further comprising at least one primary connecting component adapted to translate relative to the upper frame member between a lowermost position in the single seat configuration and an uppermost position in the tandem seat configuration. [15] A stroller according to claim 14, wherein the at least one primary connecting component is adapted to support an associated primary seat in selectively releasable attachment thereto. [16] A stroller according to claim 14, wherein the at least one primary connecting component is slidably and non-removably attached to the upper frame member. [17] The stroller of claim 14, wherein the at least one primary connecting component is positioned at least partially above and at least partially behind the at least one secondary connecting component. [18] The stroller of claim 14, wherein the at least one primary connecting component is disposed proximate a front end of the upper frame member when in the lowermost position and is disposed between the front end and a rear end of the upper frame member when in the uppermost position. [19] Stroller system comprising: a primary seat; a secondary seat; and a stroller, the stroller comprising: an upper frame member having first and second side members spaced apart from one another; a lower frame member having first and second side members spaced apart from each other; a pair of primary connecting components adapted to support the primary seat in selectively releasable attachment thereto, each of the primary connecting components being slidably attached to the upper frame member; and a lower extension having a pair of secondary connecting components adapted to carry the secondary seat in selectively releasable attachment thereto, the lower extension being pivotally attached to the lower frame member. [20] The stroller system of claim 19, wherein the sliding movement of the primary connecting components relative to the upper frame member is retarded when the primary seat is selectively attached to the primary connecting components.

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