Service brake and shift lever interlock system
US5251723A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5938
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A service brake and shift lever interlock system for a vehicle is operably controlled by a logic control circuit to prevent movement of the shift lever from the "Park" position when the ignition switch is in the "Start" or "Run" position and the service brake pedal is in a brake release position (i.e., the vehicle brakes are not applied). The interlock system does not prevent movement of the shift lever from the "Park" position under other conditions when the ignition switch is in the "Start" or "Run" position. An ignition interlock system prevents movement of the shift lever from the "Park" position when the ignition switch is in the "Lock" position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.