Pump lock-up power transmission
US4091901A · kind A · utility
10Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1976 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Nov 17, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7835
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power transmission providing cushioned shock-absorption power flow from a rive member to a driven member. The transmission includes a gear pump wherein both the gear and gear housing are free to rotate; the transmission also includes a recirculation flow path from the pump outlet to the pump inlet, said flow path comprising a metering valve that responds to pump outlet chamber pressure for progressively throttling the flow as the outlet chamber pressure rises. As the recirculation flow is throttled the pump gear and pump housing gradually lock together and thereafter rotate at approximately the same speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.