Title:
AUTOMATIC AIR PARKING BRAKE LOCK AND METHOD
Document Type and Number:
WIPO Patent Application WO2000015480
Kind Code:
A9
Abstract:
The present invention is a safety-enhancing automatic air parking brake lock system (11) that eliminates accidental and inadvertent disengagement of the air parking brake (100). The lock system (50) may be easily installed in a brake system having a manually operated loading valve (6), which when open supplies air to the air parking brake mechanism (100), thereby releasing the air parking brake (100). The invented lock is done by placing a solenoid valve (20) in-line between the air source (2) and the loading valve (6). This solenoid valve (20) is wired into the ignition switch (30) so that, when the ignition is turned to the "OFF" position, the solenoid valve (20) is de-energized, which closes the solenoid valve (20) to block the air supply to the loading (6). The air pressure between the solenoid valve (20) and the loading valve (6) is then released through the solenoid valve's (20) exhaust vent (22). The loading valve (6) automatically closes when its upstream pressure falls below a certain, pre-determined valve, and the air pressure between the loading valve (6) and the air brake (100) is thus relieved through the vent (10) of the closed loading valve (6).
More Like This:
Inventors:
MASLONKA DALE (US)
Application Number:
PCT/US1999/014915
Publication Date:
July 05, 2001
Filing Date:
June 30, 1999
Export Citation:
Assignee:
MASLONKA DALE (US)
International Classes:
B60T7/12; B60T13/26; B60T13/68; B60T15/04; B60T17/16; F16H59/74; (IPC1-7): B60R25/08
Download PDF:
Previous Patent: IMPROVED SPRAYING DEVICE FOR WASHING LIQUID AND WIPER BEARING SAME
Next Patent: MAGNETICALLY POWERED CONVEYOR SYSTEM AND METHOD
Next Patent: MAGNETICALLY POWERED CONVEYOR SYSTEM AND METHOD