B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
137/81
B60T 8/00 (2006.01) B60T 8/18 (2006.01) B60T 8/30 (2006.01)
Patent
CA 1092481
LOAD SENSING PROPORTIONER WITH PROPORTIONER DELAY Abstract of the Disclosure A brake actuating pressure proportioning valve is positioned in a vehicle rear brake circuit. The valve is sensitive to vehicle load to change the rear brake pressure point at which proportioning begins. The valve is also sensitive to front brake circuit pressure. If a significant decrease of front brake circuit pressure occurs, a delay piston is moved to follow the proportioner piston to a predetermined extent. In this condition the delay piston keeps the proportioner from operating in a proportioning mode, permitting full rear brake circuit pressure to be delivered without proportioning action. The delay piston is spring loaded to permit a significant pres- sure delay in proportioning action before it is moved toward its original position with increasing rear brake circuit pressure.
299936
General Motors Corporation
Gowling Lafleur Henderson Llp
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