US 7,404,569 B2 · Foldable stroller

Abstract

A collapsible stroller has a frame assembly with a front, a back, and left and right sides when in an in-use configuration. A seat is positioned between the left and right sides. Each of the left and right sides has an elongate bottom part and each bottom part has a front end and a back end. A back wheel is supported for rotation at the back end of each of the bottom parts. Each of the left and right sides has a front leg with a lower end pivotally connected to the front end of the respective bottom part. Each front leg extends upward from the bottom part and rearward toward the back of the frame assembly and terminates at an upper end. Each of the left and right sides also has a push arm pivotally coupled relative to the upper end of the respective front leg. Each push arm extends upward and rearward from the upper end of the respective front leg. Each of the left and right sides further has a support strut with a lower end pivotally connected to the respective bottom part at a pivot location between the front and back end of the bottom part. Each support strut terminates at an upper end in proximity to the respective front leg or the respective push arm. Each bottom part has a portion rearward of the pivot location of the support strut. The elongate bottom parts between the pivot locations and the respective front ends are curved. When the frame assembly is in the in-use configuration, the bottom parts are each curved upward from the pivot location to the front end.

Claims16

Dependent claims

A collapsible stroller comprising:

a frame assembly having a front, a back, and left and right sides when in an in-use configuration;
a seat positioned between the left and right sides;
two elongate bottom parts, one on each of the left and right sides, each bottom part having a front end and a back end;
two back wheels, one supported for rotation at the back end of each bottom part;
two front legs, one on each of the left and right sides, each front leg having a lower end pivotally connected to the front end of a respective one of the bottom parts, each front leg extending upward from the bottom part and rearward toward the back of the frame assembly and terminating at an upper end;
two push arms, one on each of the left and right sides, each push arm pivotally coupled relative to the upper end of a respective one of the front legs and extending upward and rearward from the upper end of the front leg;
and
two support struts, one on each of the left and right sides, each support strut having a lower end pivotally connected to a respective one of the bottom parts at a pivot location between the front and back end of the bottom part, each support strut terminating at an upper end in proximity to the respective front leg or the respective push arm,
wherein each bottom part has a portion rearward of the pivot location of the support strut, and wherein the elongate bottom parts between the pivot locations and the respective front ends are curved and when the frame assembly is in the in-use configuration the bottom parts are each curved upward from the pivot location to the front end.

6 more elements

A collapsible stroller comprising:

a frame assembly movable from an in-use configuration to a collapsed configuration, the frame assembly having a front, a back, and left and right sides;
and
a seat positioned between the left and right sides, wherein each side of the frame assembly includes,
an elongate bottom part having a front end and a back end and being oriented extending generally from the front to the back of the frame assembly;
a front leg having a lower end pivotally connected near the front end of the bottom part and extending upward from the bottom part and rearward toward the back of the frame assembly and terminating at an upper end;
a push arm pivotally coupled relative to the upper end of the front leg and extending upward and rearward from the upper end of the front leg;
and
a support strut having a lower end pivotally connected to the bottom part at a pivot location between the front and back end of the bottom part, the support strut terminating at an upper end in proximity to the front leg or the push arm,
wherein the bottom part has a portion rearward of the pivot location of the support strut that is longer than the remaining length of the bottom part forward of the pivot location.

6 more elements

Dependencies are inferred from the claim text.

Foldable stroller

Life of this patent

Foldable stroller

Life of this patent

Abstract

Claims16