A juvenile stroller includes a mobile base and a juvenile seat mounted on the mobile base. The mobile base includes wheels and a foldable frame carrying the juvenile seat.
대표청구항▼
1. A compact collapsible stroller comprising a mobile base anda juvenile seat coupled to the mobile base, wherein the mobile base includes a cart and a gear-driven foldable frame mounted for folding and unfolding movement on the cart and configured to include a cart pusher and a rolling cart stabili
1. A compact collapsible stroller comprising a mobile base anda juvenile seat coupled to the mobile base, wherein the mobile base includes a cart and a gear-driven foldable frame mounted for folding and unfolding movement on the cart and configured to include a cart pusher and a rolling cart stabilizer, the rolling cart stabilizer is mounted on the cart for pivotable movement about a front pivot axis between an unfolded front position extending in a forward direction away from the cart and a folded rear position alongside the cart, the cart pusher is mounted on the cart for pivotable movement about a rear pivot axis between an unfolded rear position extending in an opposite rearward direction away from the cart and a folded rear position alongside the cart, the rolling cart stabilizer includes a rotatable driven gear, and the cart pusher includes a rotatable drive gear mated to the rotatable driven gear to provide means for rotating the driven gear to move the rolling cart stabilizer relative to the cart about the front pivot axis from the unfolded front position to the folded front position in response to rotation of the drive gear caused by movement of the cart pusher relative to the cart about the rear pivot axis from the unfolded rear position to the folded rear position so that the stroller is converted from an expanded use mode to a compact collapsed storage modewherein the rolling cart stabilizer further includes a rotatable front gear axle coupled to the cart for rotation about the front pivot axis, a wheel mount coupled to the rotatable front gear axle and arranged to pivot about the front pivot axis in response to rotation of the front gear axle about the front pivot axis, and a front wheel coupled to the wheel mount, and wherein the rotatable front gear axle is coupled to the rotatable driven gear to rotate therewith in response to rotation of the rotatable drive gear during folding and unfolding of the gear-driven foldable frame. 2. The stroller of claim 1, wherein the cart includes a frame mount, a rear wheel, and a wheel axle coupled to the frame mount and the rear wheel and configured to support the rear wheel for rotation about an axis of rotation, and the rotatable front gear axle is coupled to the frame mount for rotation about the front pivot axis. 3. The stroller of claim 2, wherein the cart pusher includes a rotatable rear gear axle coupled to the frame mount for rotation about a rear pivot axis and coupled to the rotatable drive gear to support the rotatable drive gear for rotation about the rear pivot axis, a push handle, and a pivot-control linkage configured to include the rotatable drive gear and pivotably coupled to the push handle to provide means for rotating the rotatable drive gear in a first direction to cause the rotatable driven gear to rotate about the front pivot axis in an opposite second direction so that the rolling cart stabilizer pivots about the front pivot axis to move from the unfolded front position to the folded front position in response to pivoting movement of the push handle relative to the pivot-control linkage during movement of the cart pusher from the unfolded rear position to the folded rear position. 4. The stroller of claim 2, wherein the cart includes another rear wheel mounted for rotation about an axis of rotation established by the wheel axle, the frame mount includes an axle support, a frame support, and a frame-support elevator coupled to the axle support and to the frame support and configured to provide means for elevating the frame support above the axle support, the axle support is configured to support the wheel axle for rotation about the axis of rotation and lie between the rear wheels, and the rotatable front gear axle is coupled to the frame support for rotation about the front pivot axis. 5. The stroller of claim 1, wherein the wheel mount includes a wheel-support base coupled to the front wheel, a left-side base-carrier rail coupled to the wheel-support base and arranged to extend away from and pivot about the front pivot axis, and a right-side base-carrier rail coupled to the wheel-support base and arranged to lie in spaced-apart relation to the left-side base-carrier rail and to extend away from and pivot about the front pivot axis. 6. The stroller of claim 5, wherein one of the left-side and right-side base-carrier rails is coupled to the driven gear to rotate therewith about the front pivot axis during movement of the rolling cart stabilizer relative to the cart between the folded front and unfolded front positions. 7. The stroller of claim 5, wherein each of the left-side and right-side base carrier rails is shaped to resemble a hockey stick and includes a relatively longer inclined segment extending toward the front pivot axis and a relatively shorter horizontal segment coupled to the wheel-support base and a companion one of the relatively longer inclined segments. 8. The stroller of claim 5, wherein each of the left-side and right-side base-carrier rails are arranged to lie in substantially perpendicular relation to the wheel-support base to provide wheel-support base with a substantially U-shaped configuration. 9. The stroller of claim 1, wherein the cart pusher includes a push handle and a pivot-control linkage having an inner portion coupled to the cart for pivotable movement about the rear pivot axis and an outer portion pivotably coupled to the push handle. 10. The stroller of claim 9, wherein the inner portion includes the rotatable drive gear. 11. The stroller of claim 1, wherein the cart pusher includes a rotatable rear gear axle coupled to the cart for rotation about the rear pivot axis and coupled to the rotatable drive gear to support the rotatable drive gear for rotation about the rear pivot axis, a push handle, and a pivot-control linkage configured to include the rotatable drive gear and pivotably coupled to the push handle. 12. The stroller of claim 11, wherein the pivot-control linkage includes an upper rail, a lower rail, and a medial rail, the upper rail is coupled at one end thereof to the rotatable rear gear axle and at an opposite end thereof to the medial rail at a first pivot, the lower rail is coupled at one end thereof to the cart at a second pivot and at an opposite end thereof to the medial rail at a third pivot. 13. The stroller of claim 12, wherein the lower rail includes an inner segment that is coupled to the cart at the second pivot and arranged to lie in substantially spaced-apart relation to the upper rail upon movement of the cart pusher to the unfolded rear position, the lower rail also includes an outer segment that is mated with the inner segment to define an obtuse included angle therebetween and that is coupled at a free end thereof to the medial rail at the third pivot, and the medial rail is L-shaped and includes a short segment coupled to the lower rail at the third pivot and a relatively longer segment coupled to the upper rail at the first pivot. 14. The stroller of claim 13, wherein the push handle includes a handgrip, a first arm coupled to one end of the handgrip, and a second arm coupled to an opposite end of the handgrip, a free end of the first arm is coupled to the relatively longer segment of medial rail to provide means for supporting the first arm for pivotable movement relative to the upper rail about the first pivot and relative to the lower rail about the third pivot during folding movement of the cart pusher from the unfolded rear position to the folded rear position so that during such movement, an over-center condition relating to the first pivot exists wherein the first pivot is moved from a point above a reference line interconnecting the second and third pivots to a point below that reference line to provide means for retaining the push handle in a nested position alongside the upper rail to enhance the compactness of the collapsed juvenile stroller and so that such an over-center condition vanishes as soon as a caregiver pulls on the push handle to move the push handle away from the pivot-control linkage to change the juvenile stroller from the compact collapsed storage mode to the expanded use mode. 15. The stroller of claim 1, further comprising a fold control unit including an unfold-limit stop coupled to the rolling cart stabilizer and to the cart pusher and configured to provide means for limiting unfolding movement of the rolling cart stabilizer relative to the cart pusher during change of the juvenile stroller from the compact collapsed storage mode to the expanded use mode to establish relative positions of the rolling cart stabilizer and the push cart in the expanded use mode. 16. The stroller of claim 15, wherein the unfold-limit stop includes a motion-blocking post coupled to the cart pusher to move therewith relative to the cart and a foundation plate coupled to the rolling art stabilizer to move therewith relative to the cart, the motion-blocking post is arranged to lie in separated relation to the foundation plate when the juvenile stroller is collapsed to assume the compact collapsed storage mode, and the motion-blocking post is arranged to engage the foundation plate to limit rotation of the drive gear about the rear pivot axis to establish the expanded use mode of the juvenile stroller. 17. The stroller of claim 16, wherein the motion-blocking post is coupled to the drive gear to rotate therewith and the foundation plate is coupled to the driven gear to rotate therewith. 18. The stroller of claim 16, wherein the fold control unit further includes an unfold-assist spring coupled to the cart and to the cart pusher to provide means for yieldably moving the rolling cart stabilizer relative to the cart in response to unfolding movement of the cart pusher from the folded rear position to the unfolded rear position during change of the juvenile stroller from the compact collapsed storage mode to the expanded use mode. 19. The stroller of claim 18, wherein the rolling cart stabilizer further includes a rotatable front gear axle coupled to the cart for rotation about the front pivot axis, a wheel mount coupled to the rotatable front gear axle and arranged to pivot about the front pivot axis in response to rotation of the front gear axle about the front pivot axis, and a front wheel coupled to the wheel mount, and wherein the rotatable front gear axle is coupled to the rotatable driven gear to rotate therewith in response to rotation of the rotatable drive gear during folding and unfolding of the gear-driven foldable frame and wherein the unfold-assist spring comprises a torsion spring coupled to the rotatable front gear axle and to the cart. 20. A compact collapsible stroller comprising a mobile base anda juvenile seat coupled to the mobile base, wherein the mobile base comprises a cart including two rear wheels and a gear-driven foldable frame mounted on the cart and configured to include at least one front wheel, the cart also includes a wheel axle interconnecting the two rear wheels and a frame mount coupled to the wheel axle, the gear-driven foldable frame further includes a cart pusher coupled for movement about a rear pivot axis to a rear portion of the cart and configured to include a drive gear and a rolling cart stabilizer coupled for movement about a front pivot axis to a front portion of the cart and configured to include the at least one front wheel and a driven gear mating with the drive gear, the gear-driven foldable frame is configured to be folded to establish a compact collapsed storage mode of the stroller and unfolded to establish an expanded use mode of the stroller, and the gear-driven foldable frame is mounted on the frame mount of the cart for folding movement relative to the cart to cause the cart pusher and the rolling cart stabilizer to move relative to the cart during folding and unfolding of the gear-driven foldable framewherein the gear-driven foldable frame is mounted on the cart via a single center post connector that is spaced horizontally apart from the gears and located at a substantially central portion of the frame mount, and the single connector includes a first end coupled to a first frame support of the frame mount and a second end coupled to a second frame support of the frame mount. 21. The stroller of claim 20, wherein the juvenile seat is mounted on the cart to move therewith, the juvenile seat includes a foldable carrier support mounted on the gear-driven foldable frame and a child carrier configured to mount on the foldable carrier support to move therewith. 22. The stroller of claim 20, wherein the cart pusher includes a push handle and a rotatable rear gear axle coupled to the frame mount of the cart to establish the rear pivot axis and the drive gear is coupled to the rear gear axle to rotate therewith relative to the frame mount during folding and unfolding of the gear-driven foldable frame. 23. The stroller of claim 20, wherein the rolling cart stabilizer includes a wheel mount coupled to the at least one front wheel and a rotatable front gear axle coupled to the wheel mount to establish the front pivot axis and the driven gear is arranged to mate with the drive gear of the cart pusher and coupled to the front gear axle to rotate therewith relative to the frame mount during folding and unfolding of the gear-driven foldable frame. 24. The stroller of claim 20, wherein the drive gear is supported for rotation about the rear pivot axis, the driven gear is supported for rotation about the front pivot axis, and the drive gear and driven gear cooperate to provide means for using movement of the cart pusher relative to the cart toward a folded rear position alongside a rear portion of the cart to rotate the drive gear in a first direction causing the mating driven gear to rotate in an opposite direction so that such rotation of the driven gear rotates a front gear axle extending along the front pivot axis included in the rolling cart stabilizer and arranged to cause pivoting movement of the rolling cart stabilizer relative to the cart about the front pivot axis established by the front gear axle toward a folded front position alongside a front portion of the cart and the drive and driven gears are mated and used to transmit motion from a rotating rear gear axle included in the cart pusher to the front gear axle of the rolling cart stabilizer to cause the rolling cart stabilizer to pivot from an unfolded front position extending in a forward direction away for the cart to a folded front position alongside the front portion of the cart whenever the cart pusher is moved by a caregiver from an unfolded rear position extending in a rearward direction away from the cart to a folded rear position alongside the rear portion of the cart to cause the compact collapsible stroller to change from an expanded use mode to a compact collapsed storage mode. 25. The stroller of claim 20, wherein the cart pusher includes a rotatable rear gear axle coupled to the cart for rotation about the rear pivot axis and coupled to the rotatable drive gear to support the rotatable drive gear for rotation about the rear pivot axis, a push handle, and a pivot-control linkage configured to include the rotatable drive gear and pivotably coupled to the push handle. 26. The stroller of claim 25, wherein the pivot-control linkage includes an upper rail, a lower rail, and a medial rail, the upper rail is coupled at one end thereof to the rotatable rear gear axle and at an opposite end thereof to the medial rail at a first pivot, the lower rail is coupled at one end thereof to the cart at a second pivot and at an opposite end thereof to the medial rail at a third pivot. 27. The stroller of claim 20, further comprising a fold control unit including an unfold-limit stop coupled to the rolling cart stabilizer and to the cart pusher and configured to provide means for limiting unfolding movement of the rolling cart stabilizer relative to the cart pusher during change of the juvenile stroller from the compact collapsed storage mode to the expanded use mode to establish relative positions of the rolling cart stabilizer and the push cart in the expanded use mode. 28. The stroller of claim 27, wherein the unfold-limit stop includes a motion-blocking post coupled to the cart pusher to move therewith relative to the cart and a foundation plate coupled to the rolling art stabilizer to move therewith relative to the cart, the motion-blocking post is arranged to lie in separated relation to the foundation plate when the juvenile stroller is collapsed to assume the compact collapsed storage mode, and the motion-blocking post is arranged to engage the foundation plate to limit rotation of the drive gear about the rear pivot axis to establish the expanded use mode of the juvenile stroller. 29. The stroller of claim 28, wherein the motion-blocking post is coupled to the drive gear to rotate therewith and the foundation plate is coupled to the driven gear to rotate therewith. 30. The stroller of claim 28, wherein the fold control unit further includes an unfold-assist spring coupled to the cart and to the cart pusher to provide means for yieldably moving the rolling cart stabilizer relative to the cart in response to unfolding movement of the cart pusher from the folded rear position to the unfolded rear position during change of the juvenile stroller from the compact collapsed storage mode to the expanded use mode. 31. A compact collapsible stroller, comprising a juvenile seat,a cart underlying the juvenile seat and including a frame mount and at least one rear wheel mounted for rotation relative to the frame mount,a cart pusher mounted on the frame mount for pivotable movement about a rear pivot axis, the cart pusher including a push handle and a pivot-control linkage mating with the push handle at a handle pivot and including a drive gear, anda rolling cart stabilizer mounted on the frame mount for pivotable movement about a front pivot axis, the rolling cart stabilizer including at least one front wheel and a driven gear, and wherein the drive gear and the driven gear are configured and arranged to mesh to provide means for pivoting the rolling cart stabilizer relative to the frame mount about the front pivot axis in response to pivoting motion of the pivot-control linkage relative to the frame mount about the rear pivot axis and to pivoting movement of the push handle relative to the pivot-control linkage about the handle pivot. 32. The stroller of claim 31, wherein the juvenile seat is mounted on the cart pusher to move therewith relative to the cart. 33. The stroller of claim 32, wherein the juvenile seat includes a foldable carrier support mounted on the pivot-control linkage to move therewith and a child carrier configured to mount on the foldable carrier support to move therewith. 34. The stroller of claim 31, further comprising a motion-blocking post coupled to the pivot-control linkage of the cart pusher and a foundation plate coupled to the rolling cart stabilizer and wherein the motion-blocking post is arranged to move about the rear pivot axis to engage the foundation plate when the cart pusher and rolling cart stabilizer are pivoted relative to the frame mount to assumed unfolded positions relative to the cart to establish an unfold-limit stop system to limit movement of the pivot-control linkage of the cart pusher relative to the rolling cart stabilizer to establish an expanded use mode of the compact collapsible stroller. 35. The stroller of claim 34, wherein the motion-blocking post is coupled to the drive gear to rotate therewith and the foundation plate is coupled to the driven gear to rotate therewith. 36. The stroller of claim 34, further comprising an unfold-assist spring coupled to the cart and to the rolling cart stabilizer and configured to provide means for yieldably moving the rolling cart stabilizer relative to the cart in response to movement of the push handle of the cart pusher away from the cart. 37. A compact collapsible stroller comprising a juvenile seat,a gear-driven foldable frame having a gear system configured to control folding and unfolding of components included in the gear-driven foldable frame as the stroller is changed from an expanded use mode to a compact collapsed storage mode, the juvenile seat being coupled to the gear-driven foldable frame to move therewith, anda cart including a frame mount coupled to the gear-driven foldable frame and rolling wheels mounted for rotation relative to the frame mount to support the juvenile seat and gear-driven foldable frame for rolling motion once the stroller is changed to the expanded use modewherein the frame mount is mounted on the cart via a single connector, the single connector including a first end coupled to a first frame support of the frame mount and a second end coupled to a second frame support of the frame mount. 38. The stroller of claim 37, wherein the gear-driven foldable frame includes a cart pusher including a push handle and a pivot-control linkage providing a drive gear and mating with the push handle at a handle pivot and the frame mount of the cart at a rear pivot axis and a rolling cart stabilizer mating with the frame mount of the cart at a front pivot mount and including a front-wheel wheel mount, at least one front wheel coupled to the front-wheel wheel mount, and a driven gear, the drive gear included in the cart pusher mates with the driven gear included in the rolling cart stabilizer to establish the gear system and provide means for moving the rolling cart stabilizer from an unfolded position extending away from the cart to a folded front position alongside a front portion of the cart in response to movement of the pivot-control linkage about the rear pivot axis from an unfolded position extending away from the cart to a folded position aligned in closely confronting relation to the front-wheel wheel mount and pivoting movement of the push handle relative to the pivot-control linkage about the handle pivot so that the juvenile stroller is changed from the expanded use mode to assume the compact collapsed storage mode. 39. A compact collapsible stroller comprising a cart including a frame mount and at least one rear wheel mounted to rotate relative to the frame mount,a rolling cart stabilizer including a front-wheel mount, at least one front wheel mounted to rotate relative to the front-wheel wheel mount, a front gear axle rotatably coupled to the frame mount to establish a front pivot axis, and a driven gear coupled to the front gear axle to rotate therewith, the front gear axle and the driven gear cooperating to provide front means for supporting the front-wheel wheel mount for pivotable movement about the front pivot axis relative to the frame mount to support the rolling cart stabilizer for movement between an unfolded front position extending in a forward direction away from the cart and a folded front position alongside a front portion of the cart,a cart pusher including a push handle and a pivot-control linkage interconnecting the frame mount and the push handle, the pivot-control linkage including a rear gear axle rotatably coupled to the frame mount to establish a rear pivot axis, a drive gear coupled to the rear gear axle to rotate therewith, and a side portion, the push handle being coupled to the side portion of the pivot-control linkage for pivotable movement at a handle pivot, the rear gear axle and the drive gear cooperating to provide rear means for supporting the side portion for pivotable movement about the rear pivot axis relative to the frame mount to support the cart pusher for movement between an unfolded rear position extending in a rearward direction away from the cart and a folded rear position alongside a rear position of the cart, anda juvenile seat coupled to the cart pusher to move therewith relative to the cart. 40. A compact collapsible stroller comprising a mobile base,a juvenile seat coupled to the mobile base, wherein the mobile base includes a cart and a gear-driven foldable frame mounted for folding and unfolding movement on the cart and configured to include a cart pusher and a rolling cart stabilizer, the rolling cart stabilizer is mounted on the cart for pivotable movement about a front pivot axis between an unfolded front position extending in a forward direction away from the cart and a folded rear position alongside the cart, the cart pusher is mounted on the cart for pivotable movement about a rear pivot axis between an unfolded rear position extending in an opposite rearward direction away from the cart and a folded rear position alongside the cart, the rolling cart stabilizer includes a rotatable driven gear, and the cart pusher includes a rotatable drive gear mated to the rotatable driven gear to provide means for rotating the driven gear to move the rolling cart stabilizer relative to the cart about the front pivot axis from the unfolded front position to the folded front position in response to rotation of the drive gear caused by movement of the cart pusher relative to the cart about the rear pivot axis from the unfolded rear position to the folded rear position so that the stroller is converted from an expanded use mode to a compact collapsed storage mode, andwherein the gear-driven foldable frame is coupled to the mobile base via a single connector, the single connector being spaced horizontally apart from the gears and located at a substantially central portion of the cart.
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이 특허에 인용된 특허 (24)
Newton Julie L., Adjustable and foldable stroller.
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