Torque responsive fluid coupling device
US4457417A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1981 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Jul 13, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P7/042
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid coupling device is disclosed which is basically of the torque responsive type. The fluid coupling includes a separator plate (31) to separate the fluid chamber into a working or operating chamber (33) and a reservoir chamber (35). The separator plate is provided with a pumping element (47), and disposed adjacent thereto is a fluid orifice (45). When the coupling is operating in the low input speed range, the centrifugal force acting on the fluid in the reservoir generates a greater pressure in the region of the orifice (45) than does the pumping element 47, thus resulting in flow of fluid from the reservoir to the working chamber through the fluid orifice. As the slip speed of a coupling reaches the predetermined value, the pressure generated by the pumping element is greater than that generated by centrifugal force, and fluid flows from the working chamber to the reservoir, thus achieving the disengaged condition of the coupling. If additional fill rate capability is needed, a secondary fill orifice (49) may be added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.