Torque transmitting device having a fluid-operated piston
US4664242A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Sep 30, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D25/0638
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multi-plate friction torque transmitting device has a plurality of friction plates which are controlled between engaged and disengaged conditions by a fluid-operated piston. The piston is comprised of an apply piston portion and a take-up piston portion. The take-up piston portion responds rapidly when pressurized to remove the disengaged clearance between the friction plates and initiates the engagement condition. The apply piston is operable to provide the high forces necessary for a complete engagement. These high forces are transmitted through a fluid medium disposed between the apply piston and the take-up piston. A centrifugal mechanism is operable on the take-up piston to counteract the centrifugal forces applied thereto during the disengaged condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.