Vehicle wheel with clutch mechanism and self actuated extending claws

Abstract

A vehicle wheel having claws which automatically extend whenever the wheel strikes an obstacle and automatically retract when the obstacle is overcome is disclosed. The wheel also includes a ratchet type clutch mechanism which permits the wheel to be manually turned while the wheel drive shaft is fixed, thereby preventing damage. The wheel includes a spindle having at least one claw pivotally attached to the spindle. A wheel body is fitted over the spindle having one aperture for each claw attached to its front face and a circle of teeth on its back face. A hub having at least one radially extending arm is attached to the shaft or axle which turns the wheel. A tooth is provided on each arm to engage the teeth on the spindle. A wheel body is fitted over the spindle having one aperture for each claw attached to the spindle which apertures are sized and positioned so that a claw may pass through the aperture when the spindle is rotated relative to the body. A spring connects the wheel body to the spindle in a manner so that when the spindle turns and no restraining force is acting on the wheel body, the wheel body will also turn. However, when a force is applied to the wheel body restraining it from turning, the spindle is permitted to rotate a distance sufficient to allow each claw on the spindle to pivot and extend through an aperture in the wheel body. When the force is removed from the wheel body the spring causes the wheel body to rotate at a speed greater than the rotation of the spindle thereby retracting the extended claws.