PTO clutch with lubrication oil shut-off valve and integrated relief valve
US7694794B2 · kind B2 · utility
6Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2007 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Oct 15, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2048/0221
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A PTO clutch includes a lubrication shut-off valve that can slide between a first position blocking a port for lubrication oil to lubricate the PTO clutch, and a second position opening the port to lubricate the clutch. A relief valve is provided in the lubrication shut off valve, which opens in response to pressure spikes of activation oil and isolates the pressure spikes from the clutch piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.