Shift lever activated parking brake
US4875563A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Jan 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20073
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system for activating and de-activating a packing brake using only motion of the transmission gear shift lever. A mechanical linkage from the gear shift lever controlling the position of the cam. The cam in turn controls the position of a valve which can connect the spring-activated hydraulically deactivated parking brake to a source of pressurized fluid, or drain the brake. The cam is precisely positioned relative to the valve by a cam support structure, and the entire valve and cam mechanism preferably is mounted on the steering column near the gear shift mechanism. The preferred method for installing the apparatus in proper adjustment also is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.