B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/70
B60T 13/22 (2006.01)
Patent
CA 1158286
Parking Brake System Abstract A brake system for a vehicle having spring applied, pressure releasable brakes (10) including a manual pump (28), a terminal board (14) having ports (16,18,20) terminating the system fluid pressure line (22), the brake pressure line (12) and the pump pressure line (76), and a U-tube (120) connecting two of the ports on the terminal board. In the alternative embodiment, an-emergency brake release system for a vehicle having spring applied, pressure releasable brakes (130) including a pump (166), and a control valve (140) for selectively connecting the pump (166) to the brakes (130) while connecting the fluid pressure supply line (133) to a reservoir return line (136). The valve (140) includes modes for connecting the brakes (130) to the supply line (134) through an orifice (192), and a brake outlet line (133) to the reservoir return line (136) for bleeding the brakes (130), and for isolating the supply line (134) while venting the brake line (133), for checking system pressure. A limit switch (200) prevents engine starting while the brakes (130) are manually released.
360867
Hasselbacher Roland E.
Shuler Lucien B.
Caterpillar Tractor Co.
Kirby Eades Gale Baker
LandOfFree
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