192 clutches and power-stop control – Clutch and brake
Patent
1991-11-06
1993-01-12
Lorence, Richard
192 clutches and power-stop control
Clutch and brake
192 88B, 188 723, 188170, F16D 6704
Patent
active
051782480
ABSTRACT:
A coupling assembly includes a clutch assembly and a brake assembly. The brake assembly includes an annular piston which is formed as one piece with a base member. An annular cylinder chamber is formed as one piece with a second member and telescopically receives the annular piston. Force transmitting surfaces on the two members engage opposite sides of a friction disk. The annular piston and cylinder extend around the outside of the friction disk to at least partially block a flow of contaminants in a radially inward direction toward the friction disk. Passages are formed in a lower portion of the annular piston to accommodate a flow of cooling fluid and to enable any contaminants which enter the brake assembly to flow out of the brake assembly. The brake assembly is advantageously urged to an engaged condition by spring assemblies which include posts and spring elements which extend into a space between the clutch assembly and a flange portion of a flywheel. Arcuate spring retainer elements extend between outer end portions of the posts to hold the spring elements in place on the posts. The clutch assembly is operated from a disengaged condition to an engaged condition by fluid pressure conducted from the brake assembly.
REFERENCES:
patent: 2897924 (1959-08-01), Fawick
patent: 3805931 (1974-04-01), Portmann
patent: 4562907 (1986-01-01), Maeda
patent: 4785926 (1988-11-01), Matson
patent: 4874068 (1989-10-01), Collins et al.
Drawing illustrating a coupling assembly which was in public use more than one year prior to filing date of the above-identified application.
Eaton Corporation
Lorence Richard
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