Power transfer assembly with one-piece retainer ring
US5010984A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1990 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Jun 7, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2055/0058
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power transfer assembly with a one-piece retainer ring includes a housing, a plurality of alternating rotatable and non-rotatable friction discs, a power actuated piston, a spring washer, a cushion spring between the piston and the friction discs, and a retaining ring for retaining the spring washer in place. The one-piece retainer ring includes a first retainer portion positioned within a recessed groove in the housing and a second portion in contact with the spring washer. Prior art clutch and brake assemblies utilize several types of retaining rings and reaction type wear members to retain and react against a spring element. These prior art devices required two or more members to provide the retention and reaction functions. The subject combination retainer and wear ring is a one-piece member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.