Patent ID: 7211750

Claim:
A switching mechanism comprising: a first actuator plate to operate a first circuit breaker connected to a primary power supply, the first actuator plate movable between on and off positions; a second actuator plate to operate a second circuit breaker connected to a secondary power supply, the second actuator plate movable independently of the first actuator plate between on and off positions; an actuator movable between first and second positions, the actuator being operatively connected to the first and second actuator plates so that the actuator moves the first actuator plate to an on position and the second actuator plate to an off position when the actuator is moved to the first position, and moves the first actuator plate to an off position and the second actuator plate to an on position when the actuator is moved to the second position; a motor to drive the actuator; and at least one shock absorber to absorb shock due to switching of one of the first and second circuit breakers to prevent damage to said switching mechanism and said switched circuit breaker wherein the shock absorber is a compressible bushing interposed between a toggle of the circuit breaker and one of the actuator plates.