Friction-disc clutch
US4802564A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Jul 22, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D25/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A friction disc clutch including a first clutch half with radially inwardly extending outer friction plates and a second clutch half with radially outwardly extending inner friction plates interleaved with the outer friction plates. Friction material on the axially outwardly facing surfaces of the inner friction plates engage the opposing surfaces of the outer friction plates on engagement of the clutch halves. A respective Belleville spring between an inner friction plate and the next adjacent outer friction plate normally urges those plates apart sufficiently that it prevents mutual engagement of the friction plates through internal friction of the fluid in the clutch. The Belleville springs have radially external borders which connect with the outer friction plates and rotate with them and have internal borders which abut against but slide over the inner friction plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.