IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0693249
(2010-01-25)
|
등록번호 |
US-8205907
(2012-06-26)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
26 인용 특허 :
17 |
초록
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 cam-driven foldable frame mounted for folding and unfolding movement on the cart and configured to include a cart pusher, a rolling cart stabilizer,
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 cam-driven foldable frame mounted for folding and unfolding movement on the cart and configured to include a cart pusher, a rolling cart stabilizer, and a first cam-fold unit coupled to the cart and to each of the cart pusher and the rolling cart stabilizer,and wherein the first cam-fold unit includes a cam-support base formed to include a pin-receiver slot and a follower axle, an inverse cam including a follower coupled to the rolling cart stabilizer to move therewith and mounted on the follower axle to pivot about a pivot axis established by the follower axle and a motion-transfer pin arranged to extend into and slide back and forth in the pin-receiver slot formed in the cam-support base and in a motion-transfer slot formed in the follower, and a pin mover coupled to the cart pusher to move therewith and configured to provide pin-oscillator means for moving the motion-transfer pin in a first direction in the pin-receiver slot formed in the cam-support base and simultaneously in the motion-transfer slot formed in the follower to apply a pivot-inducing force to the follower to cause the follower and the rolling cart stabilizer coupled to the follower to pivot about the pivot axis in a counterclockwise direction toward the cart to assume a folded front position alongside a front portion of the cart in response to movement of the cart pusher about the pivot axis in a clockwise direction toward the cart so that the stroller is converted from an expanded use mode to a compact collapsed storage mode and for alternatively moving the motion-transfer pin in a second direction opposite to the first direction in the pin-receiver slot formed in the cam-support base and simultaneously in the motion-transfer slot formed in the follower to cause the follower and rolling cart stabilizer coupled to the follower to pivot about the pivot axis in a clockwise direction away from the cart to assume an unfolded front position extending in a forward direction away from the cart in response to movement of the cart pusher about the pivot axis in a counterclockwise direction away from the cart so that the stroller is converted from the compact collapsed storage mode to the expanded use mode. 2. The stroller of claim 1, wherein the pin-receiver slot formed in the cam-support base is substantially straight and the motion-transfer slot formed in the follower is curved. 3. The stroller of claim 2, wherein the motion-transfer slot is bounded by a curved inner edge having a first radius of curvature and a curved outer edge having a relatively larger second radius of curvature and the curved outer edge is arranged to lie in spaced-apart relation to the curved inner edge and share a center of curvature with the curved inner edge. 4. The stroller of claim 3, wherein the curved inner edge is arranged to lie in a space provided between the pivot axis and the curved outer edge. 5. The stroller of claim 3, wherein the curved outer edge has a concave shape and is arranged to face toward the pivot axis and the curved inner edge has a convex shape and is arranged to face away from the pivot axis. 6. The stroller of claim 3, wherein the motion-transfer slot is also bounded by a first end edge and an opposite second end edge, the first end edge interconnects the curved inner and outer side edges and lies at a first end of the motion-transfer slot to mate with the motion-transfer pin upon arrival of the follower and the rolling cart stabilizer at the unfolded front position associated with the expanded use mode of the stroller, and the second end edge interconnects the curved inner and outer side edges and lies at an opposite second end of the motion-transfer slot to mate with the motion-transfer pin upon arrival of the follower and the rolling cart stabilizer at the folded front position associated with the compact collapsed storage mode of the stroller. 7. The stroller of claim 6, wherein the pin-receiver slot is bounded by substantially straight first and second side edges arranged to lie in substantially spaced-apart parallel relation to one another, a first end edge arranged to interconnect the first and second side edges and to lie in spaced-apart relation to the pivot axis at a first end of the pin-receiver slot, and a second end edge arranged to interconnect the first and second side edges and to lie in an opposite second end of the pin-receiver slot in a location between the pivot axis and the first end edge associated with the pin-receiver slot, and the motion-transfer pin is arranged to lie in closely confronting relation to the first end edge associated with the pin-receiver slot upon arrival of the follower and the rolling cart stabilizer at the unfolded front position associated with the expanded use mode of the stroller and in closely confronting relation to the second end edge associated with the pin-receiver slot upon arrival of the follower and the rolling cart stabilizer at the folded front position associated with the compact collapsed storage mode of the stroller. 8. The stroller of claim 2, wherein the pin-oscillator means is defined by an interior wall included in the pin mover and configured to form a curved motion-inducement slot receiving the motion-transfer pin therein. 9. The stroller of claim 8, wherein the curved motion-inducement slot is bounded by a curved inner edge having a first radius of curvature and a curved outer edge having a relatively larger second radius of curvature and arranged to lie in spaced-apart relation to the curved outer edge and share a center of curvature with the curved inner edge. 10. The stroller of claim 9, wherein the pin-receiver slot is bounded by substantially straight first and second side edges arranged to lie in substantially spaced-apart parallel relation to one another, a first end edge arranged to interconnect the first and second side edges and to lie in spaced-apart relation to the pivot axis at a first end of the pin-receiver slot, and a second end edge arranged to interconnect the first and second side edges and to lie in an opposite second end of the pin-receiver slot in a location between the pivot axis and the first end edge associated with the pin-receiver slot, and the motion-transfer pin is arranged to lie in closely confronting relation to the first end edge associated with the pin-receiver slot upon arrival of the follower and the rolling cart stabilizer at the unfolded front position associated with the expanded use mode of the stroller and in closely confronting relation to the second end edge associated with the pin-receiver slot upon arrival of the follower and the rolling cart stabilizer at the folded front position associated with the compact collapsed storage mode of the stroller, the curved outer edge associated with the curved motion-inducement slot is configured to provide first mover means for moving the motion-transfer pin in the pin-receiver slot in the first direction from the first end of the pin-receiver slot toward the second end of the pin-receiver slot in response to movement of the cart pusher about the pivot axis in the clockwise direction toward the cart, and the curved inner edge associated with the curved motion-inducement slot is configured to provide second mover means for moving the motion-transfer pin in the pin-receiver slot in the second direction from the second end of the pin-receiver slot toward the first end of the pin-receiver slot in response to movement of the cart pusher about the pivot axis in the counterclockwise direction away from the cart. 11. The stroller of claim 8, wherein the pin mover is coupled to the follower axle to pivot about the pivot axis established by the follower axle in response to movement of the cart pusher about the pivot axis. 12. The stroller of claim 11, wherein the curved motion-inducement slot is bounded by a curved inner edge having a first radius of curvature and a curved outer edge having a relatively larger second radius of curvature, the curved outer edge is arranged to lie in spaced-apart relation to the curved outer edge and share a center of curvature with the curved inner edge, the curved inner edge is arranged to lie in a space provided between the pivot axis and the curved outer edge, and the curved outer edge has a concave shape and is arranged to face toward the pivot axis and the curved inner edge has a convex shape and is arranged to face away from the pivot axis. 13. The stroller of claim 1, wherein the cam-support base includes a first base member formed to include the pin-receiver slot and a second base member formed to include an auxiliary pin-receiver slot and arranged to cooperate with the first base member to form a plate-receiving space therebetween, the follower of the inverse cam includes a follower plate formed to include the motion-transfer slot and arranged to lie in the plate-receiving space in a position between the first and second base members, and the motion-transfer pin is arranged to extend into and move in each of the pin-receiver slot formed in the first base member and the auxiliary pin-receiver slot formed in the second base member and to extend through and move in the motion-transfer slot formed in the follower plate. 14. The stroller of claim 13, wherein the pin mover includes a first pin-motion plate formed to include a motion-inducement slot and arranged to lie in the plate-receiving space in a position between the first base member and the follower plate and the motion-transfer pin is arranged to extend through and move in the motion-inducement slot. 15. The stroller of claim 14, wherein the pin-receiver slot is substantially straight and each of the motion-transfer and motion-inducement slots is curved. 16. The stroller of claim 15, wherein the motion-transfer and motion-inducement slots cooperate to form a substantially U-shaped pattern when the follower and the rolling art stabilizer are moved to assume the unfolded front position extending in a forward direction away from the cart and cooperate to form a substantially W-shaped pattern when the follower and the rolling cart stabilizer are moved to assume the folded front position alongside the front portion of the cart. 17. The stroller of claim 14, wherein the motion-transfer slot is bounded in part by a first curved inner edge having a first radius of curvature and a first center of curvature, the motion-inducement slot is bounded in part by a second curved inner edge having a second radius of curvature and a second center of curvature, and the first and second center of curvatures are arranged to lie in spaced-apart relation to one another to locate the pivot axis between the motion-transfer pin and a line intersecting the first and second centers of curvature upon movement of the follower and the rolling cart stabilizer to assume the folded front position. 18. The stroller of claim 17, wherein the first radius of curvature is about equal to the second radius of curvature. 19. The stroller of claim 17, wherein the first and second centers of curvature are arranged to lie in spaced-apart relation to one another to locate a line intersecting the first and second centers of curvature between the motion-transfer pin and the pivot axis upon movement of the follower and the rolling cart stabilizer to assume the unfolded front position. 20. The stroller of claim 1, wherein the follower of the inverse cam includes a follower plate formed to include the motion-transfer slot and mounted on the follower axle to pivot about the pivot axis and a follower-plate connector arranged to interconnect the rolling cart stabilizer and the follower plate and configured to provide means for pivoting the rolling cart stabilizer about the pivot axis in response to pivoting movement of the follower plate about the pivot axis. 21. The stroller of claim 20, wherein the pin mover includes a first pin-motion plate formed to include a motion-inducement slot defining the pin-oscillator means and receiving the motion-transfer pin therein and mounted on the follower axle to pivot about the pivot axis. 22. The stroller of claim 20, wherein the cam-support base includes first and second base members arranged to lie in spaced-apart relation to one another to locate the follower plate in a plate-receiving space provided therebetween and the follower-plate connector is arranged to lie outside of the plate-receiving space. 23. The stroller of claim 22, wherein the pin mover includes a first pin-motion plate located in the plate-receiving space and arranged to lie between the first base member and the follower plate and the first pin-motion plate is formed to include a motion-inducement slot defining the pin-oscillator means and receiving the motion-transfer pin therein. 24. The stroller of claim 23, wherein the first pin-motion plate is mounted on the follower axle to pivot about the pivot axis. 25. The stroller of claim 24, wherein the pin mover further includes a pin-motion plate connector arranged to interconnect the cart pusher and the first pin-motion plate and configured to provide means for pivoting the first pin-motion plate about the pivot axis in response to pivoting movement of the cart pusher about the pivot axis. 26. The stroller of claim 25, wherein the pin-motion plate connector of the pin mover is arranged to lie outside of the plate-receiving space. 27. 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 and at least one front wheel mounted to rotate relative to the front wheel mount,a first cam-fold unit including a cam-support base coupled to the frame mount of the cart to move therewith, an inverse cam including a follower coupled to the rolling cart stabilizer to move therewith and a motion-transfer pin arranged to extend into a pin-receiver slot formed in the cam-support base and a motion-transfer slot formed in the follower, and a pin mover formed to include a motion-inducement slot receiving a portion of the motion-transfer pin therein, anda cart pusher coupled to the pin mover, wherein the motion-transfer pin is arranged to move in a first direction simultaneously in each of the pin-receiver, motion-transfer, and motion-inducement slots to contact the follower and the pin mover to provide folding means for simultaneously rotating the follower about a pivot axis in a counterclockwise direction and the pin mover about the pivot axis in an opposite clockwise direction to cause the follower and the rolling cart stabilizer coupled to the follower to pivot about the pivot axis in a counterclockwise direction toward the cart to assume a folded front position alongside a front portion of the cart in response to movement of the cart pusher about the pivot axis in a clockwise direction toward an opposite rear portion of the cart so that the stroller is converted from an expanded use mode to a compact collapsed storage mode and to provide unfolding means for simultaneously rotating the follower about the pivot axis in the clockwise direction and the pin mover about the pivot axis in the counterclockwise direction to cause the follower and rolling cart stabilizer coupled to the follower to pivot about the pivot axis in a clockwise direction away from the cart to assume an unfolded front position extending in a forward direction away from the cart in response to movement of the cart pusher about the pivot axis in a counterclockwise direction away from the cart so that the stroller is converted from the compact collapsed storage mode to the expanded use mode. 28. The stroller of claim 27, wherein the cam-support base includes a first base member formed to include the pin-receiver slot and a follower axle coupled to the first base member and arranged to establish the pivot axis, the follower is mounted on the follower axle for rotation about the pivot axis, and the pin mover is mounted on the follower axle for rotation about the pivot axis. 29. The stroller of claim 28, wherein the cam-support base further includes a second base member formed to include an auxiliary pin-receiver slot and the motion-transfer pin is arranged to extend into the auxiliary pin-receiver slot and move therein during movement of the motion-transfer pin in the pin-receiver, motion-transfer, and motion-inducement slots. 30. The stroller of claim 29, wherein the first and second base members cooperate to define a space therebetween containing portions of the follower and pin mover. 31. The stroller of claim 27, wherein each of the motion-transfer and motion-inducement slots are curved and the pin-receiver slot is substantially straight. 32. The stroller of claim 31, wherein the motion-transfer and motion-inducement slots cooperate to form a substantially U-shaped pattern when the follower and the rolling art stabilizer are moved to assume the unfolded front position extending in a forward direction away from the cart and cooperate to form a substantially W-shaped pattern when the follower and the rolling cart stabilizer are moved to assume the folded front position alongside the front portion of the cart. 33. 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 cam-driven foldable frame mounted for folding and unfolding movement on the cart and configured to include a cart pusher, a rolling cart stabilizer, and a first cam-fold unit coupled to the cart and to each of the cart pusher and the rolling cart stabilizer,and wherein the first cam-fold unit includes a cam-support base formed to include a pin-receiver slot and a follower axle, an inverse cam including a follower coupled to the rolling cart stabilizer to move therewith and mounted on the follower axle to pivot about a pivot axis established by the follower axle and a motion-transfer pin arranged to extend into and slide back and forth in the pin-receiver slot formed in the cam-support base and in a motion-transfer slot formed in the follower, and a pin mover coupled to the cart pusher to move therewith and formed to include a curved motion-inducement slot, and the motion-transfer pin is arranged to extend into and slide back and forth in the curved motion-inducement slot during movement of the curved motion-transfer slot and the substantially straight pin-receiver slot.
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