Reaction surfaces for hydraulically actuated clutches

Details Reaction surfaces for hydraulically actuated clutches Reaction surfaces for hydraulically actuated clutches

1996-03-26

1998-03-03

Lorence, Richard M.

192 clutches and power-stop control

Clutch and brake

Vehicle type

192 85C, 192 91R, 192 98, 192 18A, F16D 2508, F16D 6704

Patent

active

057225206

ABSTRACT:
A hydraulically actuated clutch includes a pair of hydraulic cylinders driving pistons to selectively move a clutch bearing to bring the clutch into and out of engagement. In standard clutches, a feature known as a clutch brake is sometimes contacted by the clutch bearing. The clutch bearing contacts the clutch brake to prevent rotation of the shaft under certain conditions. Because of this contact, the clutch bearing could rotate. Thus, anti-rotation structure is included in the inventive hydraulically actuated clutch. In a first embodiment, the anti-rotation structure includes surfaces formed on the sides of hydraulic cylinder housings which prevent rotation of the clutch bearing. The surfaces are preferably positioned radially inwardly from the pistons, and axially between the pistons and the clutch disks and plates which actually transmit the rotation through the clutch. In this way, the anti-rotation structure is optimally positioned to reliably prevent rotation. In a second embodiment, the anti-rotation structure includes a plurality of pins which prevent rotation of the clutch bearing.

REFERENCES:
patent: 4428471 (1984-01-01), Parker et al.
patent: 4579203 (1986-04-01), Link
patent: 4991702 (1991-02-01), Ladin
patent: 5335764 (1994-08-01), Leitner et al.

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