Self-energizing pump for overrunning clutch

Details Self-energizing pump for overrunning clutch Self-energizing pump for overrunning clutch

2006-06-08

2008-08-12

Bonck, Rodney H (Department: 3681)

192 clutches and power-stop control

Clutches

Plural clutch-assemblage

C192S1030FA, C074S650000

Reexamination Certificate

active

07410042

ABSTRACT:
A pump includes a cam member and an armature plate received on an input shaft rotatably supported with a differential housing of a clutch. The pump also includes a cylinder rod slidingly received in a chamber of a master cylinder to pressurize a hydraulic fluid. The cam member includes a ring and a back plate. The ring has an outer, preferably symmetrical, surface with a variable radius defining a ramped portion for outwardly driving the cylinder rod when the cam member is rotated either forward or backward with respect to the differential housing. A coil generates an electromagnetic field when activated drawing the cam member towards the armature plate such that contact forces causes the cam member to rotate with the armature plate. A roller disc is rotatably supported at one end of the cylinder rod for rolling contact between the cylinder rod and the cam surface of the cam member ring.

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