초록 ▼

A stroller is provided having a stroller frame supporting a stroller seat. The stroller frame includes a linkage that facilitates collapsing or folding of the stroller frame from an in-use configuration to a folded or collapsed configuration, and unfolding of the stroller frame from the folded or co

A stroller is provided having a stroller frame supporting a stroller seat. The stroller frame includes a linkage that facilitates collapsing or folding of the stroller frame from an in-use configuration to a folded or collapsed configuration, and unfolding of the stroller frame from the folded or collapsed configuration to the in-use configuration. The linkage also facilitates adjustment of the stroller seat height between at least two vertically offset positions.

대표청구항 ▼

What is claimed is: 1. A stroller, movable between an unfolded configuration and a folded configuration, the stroller comprising: a stroller frame including a plurality of stroller frame components, wherein the stroller frame is movably supported by at least one wheel; a seat assembly supported by

What is claimed is: 1. A stroller, movable between an unfolded configuration and a folded configuration, the stroller comprising: a stroller frame including a plurality of stroller frame components, wherein the stroller frame is movably supported by at least one wheel; a seat assembly supported by the stroller frame, the seat assembly including a seat support bar and a seat that can be selectively moved by a user between a first height and a second height different than the first height relative to the stroller frame and retained at the selected height in the unfolded configuration; a linkage having a first end connected to the stroller frame and having a second end connected to the seat support bar at only one pivot axis, wherein the linkage operatively joins a first stroller frame component and the seat support bar such that movement of the first stroller frame component between a folded and an unfolded position causes the seat support bar to correspondingly move between a folded and unfolded position. 2. The stroller as recited in claim 1, wherein the first stroller frame component is a rear leg supporting a rear wheel assembly, and the seat support bar supports the seat assembly. 3. The stroller as recited in claim 1, wherein the linkage supports the seat such that the height of the seat is adjustable without causing the stroller frame to be moved toward the folded or unfolded configuration. 4. The stroller as recited in claim 1, further comprising a latch configured to lock the seat assembly at the selected height. 5. The stroller as recited in claim 1, wherein the seat assembly comprises a pivot and a seat frame pivotally connected to the pivot such that the angular orientation of the seat frame is adjustable. 6. The stroller as recited in claim 1, wherein the stroller frame comprises an outwardly projecting handle pivotally connected for movement between a folded position and an unfolded position. 7. The stroller as recited in claim 1, wherein the linkage comprises a four-bar linkage. 8. The stroller as recited in claim 1, wherein the linkage comprises an upper link and a lower link, each having a front and rear end, the front ends of the upper and lower links connected to a forward link, and the rear ends of the upper and lower link connected to an upper and lower crossbar, respectively. 9. The stroller as recited in claim 8, wherein the stroller frame comprises a rear leg supported by a rear wheel assembly, wherein the rear leg is connected to the upper and lower crossbars. 10. The stroller as recited in claim 9, wherein the forward link is connected to the seat assembly by the seat support bar. 11. The stroller as recited in claim 10, wherein movement of the rear leg from an unfolded position to a folded position drives the linkage to correspondingly move the seat support bar from the unfolded position to the folded position. 12. The stroller as recited in claim 1, wherein the seat is movable between the selectable first and second seat heights without causing the stroller frame to move between the unfolded configuration and the folded configuration. 13. The stroller as recited in claim 1, wherein the linkage is movable from a first selectable position that defines the first height of the seat to a second selectable position that defines the second height of the seat. 14. The stroller as recited in claim 13, wherein movement of the linkage between the first position and the second position does not cause the stroller frame to move between the unfolded configuration and the folded configuration. 15. The stroller as recited in claim 1, wherein the linkage further comprises a spring member biasing the linkage in a direction that causes the seat height to raise. 16. The stroller as recited in claim 1, wherein the seat moves in a plurality of intervals between the first height and the second height. 17. A stroller comprising: a stroller frame including at least one front leg supported by a front wheel assembly, a rear leg supported by a rear wheel assembly, the rear leg pivotally connected with respect to the front leg; a seat assembly supported by the stroller frame, the seat assembly including a seat support bar pivotally connected with respect to the front leg; and a four-bar linkage connected to the seat support bar and the rear leg, wherein the seat support bar rotates in concert with one of the links of the four-bar linkage relative to another of the links of the four-bar linkage, and wherein movement of the rear leg from an unfolded position to a folded position causes the four-bar linkage to bias the seat support bar from an unfolded position to a folded position, and wherein the a four-bar linkage is movable from a first position that defines a first user selectable height of the seat assembly to a second position that defines a second user selectable height of the seat assembly different from the first user selectable height. 18. The stroller as recited in claim 17, wherein the seat assembly further comprises a seat frame that is pivotally mounted to the seat assembly so as to be angularly adjustable between a vertical and a horizontal orientation. 19. The stroller as recited in claim 17, wherein the linkage moves in a plurality of selectable intervals between the first selectable position and the second selectable position. 20. A stroller movable between an unfolded configuration and a folded configuration, the stroller comprising: a stroller frame movably supported by at least one wheel; a seat assembly supported by the stroller frame and having a seat that can be selectively moved by a user between a first height and a second height different than the first height relative to the stroller frame and retained at the selected height in the unfolded configuration; and a linkage having a first end connected to the stroller frame and a second end connected to the seat assembly, the linkage operatively joining a rear leg supported by a rear wheel assembly and a seat support bar such that movement of the rear leg between a folded and an unfolded position causes the seat support bar to correspondingly move between a folded and unfolded position, wherein the linkage comprises an upper link and a lower link, each having a front and rear end, the front ends of the upper and lower links connected to a forward link, and the rear ends of the upper and lower link connected to an upper and lower crossbar, respectively, wherein the rear leg is connected to the upper and lower crossbars, and the forward link is connected to the seat assembly by the seat support bar, and wherein the forward link does not rotate with respect to the seat support bar. 21. A stroller, movable between an unfolded configuration and a folded configuration, the stroller comprising: a stroller frame including a plurality of stroller frame components, wherein the stroller frame is movably supported by at least one wheel; a seat assembly supported by the stroller frame, the seat assembly including a seat that can be selectively moved by a user, wherein the entire seat is moved between a first height and a second height different than the first height relative to the stroller frame and retained at the selected height in the unfolded configuration; a linkage having a first end connected to the stroller frame and having a second end connected to the seat assembly, wherein the linkage operatively joins a first and second stroller frame component such that movement of the first stroller frame component between a folded and an unfolded position causes the second stroller frame component to correspondingly move between a folded and unfolded position.