Electric parking brake control
US6752472B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Aug 23, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/261
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake control method and apparatus capable of locating fluid carrying lines away from a vehicle dash and providing threshold pressure detection is provided. The apparatus includes an electric switch assembly which can have portions that are mounted in the vehicle cab. A pressure switch subassembly and a control subsystem electrically communicate with the electric switch assembly. The electric switch assembly provides electrical current to a solenoid in the control subsystem, opening a pneumatic valve and providing air pressure to other components of the control subsystem and a brake release actuator. If electrical current is removed from the solenoid in the control subsystem, the pneumatic valve is closed, removing air pressure from other components of the control subsystem and the brake release actuator. If less than a threshold pressure is detected at the pressure switch subassembly, the electric switch assembly does not provide electrical current to the control subsystem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.