Gravity reacting anti-rollback brake

摘要

This invention relates to a gravity reacting brake system. According to the invention there is provided a brake system comprising a pair of graded brake cam structures disposed on opposite ends of a connecting rod. Connecting rod and cams are operatively disposed adjacent wheels via lever assembly mount. The natural pull of gravity and the configuration of the cams operate to allow passage of wheels in both directions when on flat surfaces and in only a single direction when on an incline. When on an incline, gravity operates to dispose cams relative to the wheels such that rotation of wheels in one direction is hindered by a thickening of cam body caused by rotation of cam about its axis. The system also includes adjustment means for setting the incline angle at which cams will operate to stop wheel rotation in the undesired direction.