B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/70
B60T 15/18 (2006.01) B60T 13/26 (2006.01) B60T 17/18 (2006.01)
Patent
CA 1087223
AIR BRAKE SYSTEM WITH PRESSURE HOLDING VALVE Abstract A vehicle air brake system includes spring set air re- leased parking brakes to which air is supplied through a pressure holding valve which maintains the air chambers of the parking brakes at a predetermined pressure even though the air brake system may be at operating pressures substan- tially lower than the predetermined pressure. When the air pressure in the air brake system falls below operational levels, the pressure holding valve responds to release the air from the parking brake chambers.
289952
Macrae & Co.
Midland-Ross Corporation
LandOfFree
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