Patent ID: 6059680
Filing Date: 2000-05-09
Classification: F16H

Abstract:
A torque transmission coupling for an axle of a four-wheel-drive vehicle, said torque transmission coupling comprising:a two-piece differential case having a first piece and a second piece;a ring gear secured to and transmitting an input torque to said first piece;at least one pinion and side gear assembly secured to and receiving an output torque from said second piece;a multi-disc clutch mechanism adapted to transmit torque from said first piece to said second piece when said multi-disc clutch mechanism is in an engaged position, a first set of clutch plates being secured to said first piece and a second set of clutch plates being secured to said second piece; anda speed sensitive pump actuation system responsive to a relative rotation between said first piece and said second piece to thereby actuate said multi-disc clutch mechanism,wherein both said speed sensitive pump actuation system and said clutch mechanism are disposed within said differential case enclosing a differential assembly.