Vehicle retarders
US3960249A · kind A · utility
3Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1972 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | Apr 17, 1992 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2065/783
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a vehicle retarder system having a retarder with discs working in oil which is continuously circulated by a pump, a tapping is taken from the oil circuit upstream of a variable but never wholly closed valve to supply oil to an actuator of the retarder. When retardation is required, the valve is partly closed to increase the pressure in the tapping and so to actuate the retarder, while the flow of cooling oil through the retarder continues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.