Fluid pressure braking system
US5226692A · kind A · utility
12Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Sep 26, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T15/041
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A limited service application of the service brakes of the trailer portion of a tractor trailer combination vehicle is applied and held while the vehicle operator gets out of the cab to make a pre-trip inspection. The service actuation is initiated by releasing the trailer parking brakes while the tractor parking brakes remain applied and then making a momentary service brake actuation by use of the vehicle dual control valve. A control valve assembly responds to the service actuation to hold a service actuation of the trailer brakes until either the tractor parking brakes are released or the trailer parking brakes are applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.