Patent ID: 6575281
Filing Date: 2003-06-10
Classification: B60K,F04C,F16D,F16H

Abstract:
A device for coupling an input shaft and an output shaft, comprising:a carrier coupled to the input shaft; a pressure chamber; a rotary pump coupled to said carrier and the output shaft and adapted to increase pressure in said pressure chamber upon relative rotational movement of said carrier and the output shaft and to resist relative rotational movement of said carrier and the output shaft upon the presence of sufficient pressure in said pressure chamber; a control valve coupled to said pressure chamber and adapted to selectively maintain sufficient pressure in said pressure chamber, thereby urging said rotary pump to resist relative rotational movement of said carrier and the output shaft, and to selectively relieve pressure from said pressure chamber, thereby allowing relative rotational movement of said carrier and the output shaft; and an electric control unit coupled to said control valve and adapted to control said control valve.