Controlled type rotation speed difference sensitive coupling
US5137130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1990 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | May 2, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2048/204
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A controlled type rotation speed difference sensitive coupling is disclosed, which is for use between first and second rotatable members. The coupling comprises a drive housing connected to the first rotatable member, a rotor connected to the second rotatable member and rotatably received in the housing, and driving pistons operatively carried by the rotor having head portions thereof slidably engaged with a cam surface wall formed on an inner surface of the drive housing. The rotor has at its center portion a spool chamber in which a spool is disposed. Balance passages and relief passages extend respectively between working chambers defined by the driving pistons and the spool chamber. Each balance passage has an orifice which is exposed to the spool chamber and closable by the spool. The orifice is non-circular in shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.