Viscous shear clutch
US4444298A · kind A · utility
48Cited by
1References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1981 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Jul 10, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D37/008
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electro-rheological fluid is used as a transmission fluid between confronting, rotatable sets of clutch plates across which a potential difference can be applied so as to vary the viscous shear characteristic of the interjacent fluid. Differential arrangements of the clutch plates ensure cancellation of residual drag effects and the clutch can be electrically varied substantially from complete disengagement to solid engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.