Patent ID: 7880101
Filing Date: 2011-02-01
Classification: B60Q

Abstract:
1. A rotary switch for selectively coupling a first contact to a second contact or a third contact, comprising: a rotary element for controllably rotating among at least a first position coupling the first contact to the second contact, and a second position coupling the first contact to the third contact; a first pawl and a second pawl pivotally attached to the rotary element; a ramp cam for acting on the first and second pawl; and a spring coupling the first pawl to the second pawl, such that a pivoting motion of one pawl among the first and second pawls exerts a mechanical force tending to pivot the other pawl among the first and second pawls; wherein rotation of the rotary element toward the first position causes the ramp cam to act on the first pawl, pivoting the first pawl and exerting a force on the second pawl, tending to move a tooth of the second pawl toward a central shaft.