Speed reducer control device for a vehicle having two independent pressurized fluid braking circuits
US4425006A · kind A · utility
5Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1981 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Apr 6, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/748
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The energization of the electric speed reducer of a vehicle, whose friction brakes for the front wheels and rear wheels are respectively controlled by two independent pressurized fluid circuits, is controlled by a plurality of pressure contacts. These pressure contacts are actuated by the pressure of a fluid and this pressure is permanently given a value tied to the higher of the two pressures existing in the two independent pressurized fluid circuits. A dual control relay valve of the ++ type is connected to these two circuits and to an independent source of pressurized fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.