| 主权项 |
1. A stroller comprising:
a base having a first end, a second end, and two parallel elongated portions extending therebetween; and a pair of laterally spaced apart wheels located proximate the second end of the base, wherein each wheel further comprises a suspension system comprising:
a first suspension structure fixedly attached to one of the two parallel elongated portions;a second suspension structure comprising a first end and a second end, wherein the second end is located at an opposing end to the first end, wherein the first end of the second suspension structure is pivotally attached to the first suspension structure;a spring suspension member attached to the second end of the second suspension structure and one of the two parallel elongated portions, said spring suspension structure further comprising:a lower portion with a top surface;a housing structure with a first end and a second end;a first spring, wherein the first spring is contained within the housing structure, wherein the top surface of the lower portion comprises a first stop surface for the first spring and an inner housing structure contained within the housing structure comprises a second stop surface for the first spring; anda second spring with a first end and a second end, wherein the second spring is located radially outward of the housing structure, wherein the first end of the second spring is at the top surface of the lower portion and the second end is at a base of the second end of the housing structure; anda receiving element mounted to the one of the two parallel elongated portions configured to hold the second end of the housing structure. |
