초록 ▼

A wheelchair includes a frame, and a front pivot arm pivotally mounted to the frame at a front pivot point, the front pivot arm having a caster for supporting the frame. A rear pivot arm is pivotally mounted to the frame at a rear pivot point, the rear pivot arm having a caster for supporting the fr

A wheelchair includes a frame, and a front pivot arm pivotally mounted to the frame at a front pivot point, the front pivot arm having a caster for supporting the frame. A rear pivot arm is pivotally mounted to the frame at a rear pivot point, the rear pivot arm having a caster for supporting the frame. A ground engaging mid-wheel drive wheel is connected to the frame. A linkage connects the front and rear pivot arms to each other in a manner such that an upward or downward rotation of one of the pivot arms about its pivot point causes rotation of the other pivot arm about its pivot point in an opposite rotational direction.

대표청구항 ▼

What is claimed is: 1. A wheelchair comprising:a frame;a front pivot arm pivotally mounted to the frame at a front pivot point, the front pivot arm having a caster for supporting the frame;a rear pivot arm pivotally mounted to the frame at a rear pivot point, the rear pivot arm having a caster for s

What is claimed is: 1. A wheelchair comprising:a frame;a front pivot arm pivotally mounted to the frame at a front pivot point, the front pivot arm having a caster for supporting the frame;a rear pivot arm pivotally mounted to the frame at a rear pivot point, the rear pivot arm having a caster for supporting the frame;a ground engaging mid-wheel drive wheel connected to the frame; anda linkage connecting the front and rear pivot arms to each other in a manner such that an upward or downward rotation of one of the pivot arms about its pivot point caused by an obstacle encountered during travel on a surface causes rotation of the other pivot arm about its pivot point in an opposite rotational direction.