초록

A collapsible stroller includes a mobile base and a juvenile seat coupled to the mobile base. The mobile base includes a foldable frame and wheels.

대표청구항 ▼

1. A compact collapsible stroller comprising a seat shell configured to receive an infant,a rolling base including a shell-support frame, anda shell mount configured to interconnect the seat shell and the rolling base to support the seat shell in a supported position above the rolling base for movem

1. A compact collapsible stroller comprising a seat shell configured to receive an infant,a rolling base including a shell-support frame, anda shell mount configured to interconnect the seat shell and the rolling base to support the seat shell in a supported position above the rolling base for movement therewith in an expanded use mode associated with the rolling base and to release the seat shell from the supported position to permit separation of the seat shell from the rolling base in a collapsed storage mode associated with the rolling base, wherein the rolling base further includes a front wheel unit mounted on a front end of the shell-support frame for pivotable movement about a front pivot axis between a retracted position arranged to lie under the shell-support frame in the collapsed storage mode of the rolling base and an extended position arranged to extend away from an underside of the shell-support frame to elevate the front end of the shell-support frame above ground underlying the rolling base in the expanded use mode of the rolling base and a rear wheel unit mounted on a rear end of the shell-support frame for pivotable movement about a rear pivot axis between a retracted position arranged to lie under the shell-support frame in the collapsed storage mode of the rolling base and an extended position arranged to extend away from the underside of the shell-support frame to elevate the rear end of the shell-support frame above ground underlying the rolling base in the expanded use mode of the rolling base, and wherein a first front wheel included in the front wheel unit moves rearwardly to lie in close proximity to the rear end of shell-support frame in the collapsed storage mode of the rolling base and a first rear wheel included in the rear wheel unit is arranged to move forward to lie in close proximity to the front end of the shell-support frame in the collapsed storage mode of the rolling base wherein the shell-support frame comprises a central basket-receiving aperture and the stroller comprises a basket configured to mate with the shell-support frame in a stroller mode with the basket extending downwardly through the central basket-receiving aperture toward ground underlying the rolling base. 2. The stroller of claim 1, wherein the front wheel unit further includes a first front leg having an upper end mounted on the shell-support frame for rotation about the front pivot axis and a lower end coupled to the first front wheel to support the first front wheel for rotation about an axis of rotation, the rear wheel unit further includes a first rear leg having an upper end mounted on the shell-support frame for rotation about the rear pivot axis and a lower end coupled to the first rear wheel to support the first rear wheel for rotation about an axis of rotation, and the first front leg and first rear leg are arranged to lie in side-by-side criss-crossed relation to one another in the collapsed storage mode of the rolling base and in spaced-apart splayed relation to one another to diverge in a direction extending away from the shell-support frame in the expanded use mode of the rolling base. 3. The stroller of claim 2, wherein each of the first front and rear legs has a curved shape, and a concave edge of the first front leg is arranged to extend between the upper and lower ends of the first front leg and face away from ground underlying the rolling base in the collapsed storage mode of the rolling base and toward the ground underlying the rolling base in the expanded use mode of the rolling base. 4. The stroller of claim 2, wherein the front wheel unit further includes a second front wheel and a second front leg having an upper end mounted on the shell-support frame for rotation about the front pivot axis and a lower end coupled to the second front wheel to support the first second wheel for rotation about an axis of rotation, the rear wheel unit further includes a second rear wheel and a second rear leg having an upper end mounted on the shell-support frame for rotation about the rear pivot axis and a lower end coupled to the second rear wheel to support the second rear wheel for rotation about an axis of rotation, and the second front leg and second rear leg are arranged to lie in side-by-side criss-crossed relation to one another in the collapsed storage mode of the rolling base and in spaced-apart splayed relation to one another to diverge in a direction extending away from the shell-support frame in the expanded use mode of the rolling base. 5. The stroller of claim 4, wherein in the collapsed storage mode of the rolling base the first and second rear legs are arranged to lie in laterally spaced-apart relation to one another to locate the first and second front legs in a space provided under the shell-support frame and between the first and second rear legs. 6. The stroller of claim 4, wherein each of the second front and rear legs has a curved shape, and a concave edge of the second front leg is arranged to extend between the upper and lower ends of the second front leg and face away from ground underlying the rolling base in the collapsed storage mode of the rolling base and toward the ground underlying the rolling base in the expanded use mode of the rolling base. 7. The stroller of claim 2, wherein the shell-support frame includes a front bar arranged to extend generally along the front pivot axis, a rear bar arranged to extend generally along the rear pivot axis, a first side bar arranged to interconnect companion first ends of each of the front and rear bars, and a second side bar arranged to interconnect companion second ends of each of the front and rear bars. 8. The stroller of claim 7, wherein the upper end of the first front leg is mounted for pivotable movement about the front pivot axis on a forward end of the first side bar, the upper end of the second front leg is mounted for pivotable movement about the front pivot axis on a forward end of the second side bar, the upper end of the first rear leg is mounted for pivotable movement about the rear pivot axis on an opposite rearward end of the first side bar, and the upper end of the second rear leg is mounted for pivotable movement about the rear pivot axis on an opposite rearward end of the second side bar. 9. The stroller of claim 1, wherein the stroller further comprises a stroller push handle that is mounted on the seat shell for sliding movement relative to the seat shell between a retracted storage position and an extended use position to provide means for moving a mobile unit including the rolling base and the seat shell along ground underlying the rolling base in the expanded use mode of the rolling base after the seat shell is coupled to the shell mount to support the seat shell on the rolling base and the stroller push handle has been moved relative to the seat shell to assume the extended use position. 10. The stroller of claim 9, wherein the seat shell includes a seat bottom and a seat back arranged to extend upwardly from the seat bottom and the stroller push handle is mounted for sliding movement on an exterior portion of the seat back. 11. The stroller of claim 9, wherein the stroller further includes a carry handle mounted separately from the push handle, the carry handle coupled to the seat shell for pivotable movement about a handle pivot axis and to cooperate with the seat shell to form a mobile infant carrier that is separable from the rolling base at least in the collapsed storage mode of the rolling base. 12. The stroller of claim 9, wherein the stroller push handle includes a laterally extending grip portion, a first arm including an upper portion fixed to a first end of the grip portion and a lower portion received in a first slide channel provided on a first side of the seat shell, and a second arm including an upper portion fixed to a second end of the grip portion and a lower portion received in a second slide channel provided on a second side of the seat shell. 13. The stroller of claim 12, wherein the grip portion is arranged to lie above and in spaced-apart relation to the seat shell to be gripped by a caregiver in response to movement of the stroller push handle to the extended position and to lie alongside the seat shell and away from the carry handle in response to movement of the stroller push handle to the retracted position. 14. A compact collapsible stroller comprising a seat shell configured to receive an infant,a rolling base including a shell-support frame, anda shell mount configured to interconnect the seat shell and the rolling base to support the seat shell in a supported position above the rolling base for movement therewith in an expanded use mode associated with the rolling base and to release the seat shell from the supported position to permit separation of the seat shell from the rolling base in a collapsed storage mode associated with the rolling base, wherein the rolling base further includes a front wheel unit mounted on a front end of the shell-support frame for pivotable movement about a front pivot axis between a retracted position arranged to lie under the shell-support frame in the collapsed storage mode of the rolling base and an extended position arranged to extend away from an underside of the shell-support frame to elevate the front end of the shell-support frame above ground underlying the rolling base in the expanded use mode of the rolling base and a rear wheel unit mounted on a rear end of the shell-support frame for pivotable movement about a rear pivot axis between a retracted position arranged to lie under the shell-support frame in the collapsed storage mode of the rolling base and an extended position arranged to extend away from the underside of the shell-support frame to elevate the rear end of the shell-support frame above ground underlying the rolling base in the expanded use mode of the rolling base, and wherein a first front wheel included in the front wheel unit moves rearwardly to lie in close proximity to the rear end of shell-support frame in the collapsed storage mode of the rolling base and a first rear wheel included in the rear wheel unit is arranged to move forward to lie in close proximity to the front end of the shell-support frame in the collapsed storage mode of the rolling base,wherein the front wheel unit further includes a first front leg having an upper end mounted on the shell-support frame for rotation about the front pivot axis and a lower end coupled to the first front wheel to support the first front wheel for rotation about an axis of rotation, the rear wheel unit further includes a first rear leg having an upper end mounted on the shell-support frame for rotation about the rear pivot axis and a lower end coupled to the first rear wheel to support the first rear wheel for rotation about an axis of rotation, and the first front leg and first rear leg are arranged to lie in side-by-side criss-crossed relation to one another in the collapsed storage mode of the rolling base and in spaced-apart splayed relation to one another to diverge in a direction extending away from the shell-support frame in the expanded use mode of the rolling base,wherein the shell-support frame includes a front bar arranged to extend generally along the front pivot axis, a rear bar arranged to extend generally along the rear pivot axis, a first side bar arranged to interconnect companion first ends of each of the front and rear bars, and a second side bar arranged to interconnect companion second ends of each of the front and rear bars, andwherein the front, first side, rear, and second side bars are connected in series to form an endless loop and a boundary of a central basket-receiving aperture and the stroller further comprises a basket configured to mate with the shell-support frame in a stroller mode of the basket and extend downwardly through the central basket-receiving aperture toward ground underlying the rolling base. 15. The stroller of claim 14, wherein the basket comprises a pliable material and is attached non-permanently to the rolling base. 16. The stroller of claim 14, wherein the basket includes a container formed to include an article-storage space and a first handle coupled to the container and configured to provide shoulder-strap means for carrying the container on a shoulder of a person as a wearable shoulder bag after separation of the basket from the shell-support frame. 17. A compact collapsible stroller comprising a seat shell configured to receive an infant,a rolling base including a shell-support frame, anda shell mount configured to interconnect the seat shell and the rolling base to support the seat shell in a supported position above the rolling base for movement therewith in an expanded use mode associated with the rolling base and to release the seat shell from the supported position to permit separation of the seat shell from the rolling base in a collapsed storage mode associated with the rolling base, wherein the rolling base further includes a front wheel unit mounted on a front end of the shell-support frame for pivotable movement about a front pivot axis between a retracted position arranged to lie under the shell-support frame in the collapsed storage mode of the rolling base and an extended position arranged to extend away from an underside of the shell-support frame to elevate the front end of the shell-support frame above ground underlying the rolling base in the expanded use mode of the rolling base and a rear wheel unit mounted on a rear end of the shell-support frame for pivotable movement about a rear pivot axis between a retracted position arranged to lie under the shell-support frame in the collapsed storage mode of the rolling base and an extended position arranged to extend away from the underside of the shell-support frame to elevate the rear end of the shell-support frame above ground underlying the rolling base in the expanded use mode of the rolling base, and wherein a first front wheel included in the front wheel unit moves rearwardly to lie in close proximity to the rear end of shell-support frame in the collapsed storage mode of the rolling base and a first rear wheel included in the rear wheel unit is arranged to move forward to lie in close proximity to the front end of the shell-support frame in the collapsed storage mode of the rolling base, andwherein the stroller further comprises a basket that is configured to be mated to the shell-support frame to form a storage basket under the seat shell in the expanded use mode of the rolling base when the seat shell is supported on the shell mount above the rolling base and that is configured to provide a wearable shoulder bag when separated from the shell-support frame. 18. The stroller of claim 17, wherein the basket includes a container formed to include an article-storage space and a first handle coupled to the container and configured to provide shoulder-strap means for carrying the container on a shoulder of a person as a wearable shoulder bag after separation of the basket from the shell-support frame. 19. The stroller of claim 17, wherein the basket includes a container, a first handle coupled to the container, and a second handle coupled to the container and arranged to lie in spaced-apart relation to the first handle, and the container is arranged to underlie the seat shell when the seat shell is supported on the shell mount. 20. The stroller of claim 19, wherein the first and second handle cooperate to provide fastening means for mounting the container of the basket to the shell-support frame. 21. The stroller of claim 20, wherein each of the first and second handles is adjustable in size so as to be lengthened at the option of a caregiver to facilitate use of the basket as a wearable shoulder bag.