Hydraulic fan circuit
US8844279B2 · kind B2 · utility
4Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Apr 21, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7058
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic fan circuit includes a primary pump, a motor fluidly connected to the primary pump, and a fan operably connected to and driven by the motor. The circuit also includes a supply passage extending from the primary pump to the motor, a return passage extending from the motor to the primary pump, and a pressure limiting valve configured to selectively reduce pressure of a flow of pilot fluid directed to the primary pump. The circuit further includes an override valve configured to selectively connect the supply passage to the pressure limiting valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.