B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 13/138 (2006.01) B60T 13/14 (2006.01) B60T 13/68 (2006.01)
Patent
CA 2358193
A work vehicle is provided with a brake system actuated by depressing either the left pedal or the right pedal. The brake system comprises two parallel brake circuits. The first brake circuit has a first brake actuator, a first hydraulic line, a first flow regulating portion of a tandem brake valve and a first accumulator. The second brake circuit has a second brake actuator, a second hydraulic line, a second flow regulating portion of the tandem brake valve and a second accumulator. To equalize the hydraulic pressure applied to the first and second brake actuators, an equalizer hydraulic line having an orifice extends between the first and second hydraulic lines. A force feedback hydraulic circuit is hydraulically positioned between the first and second hydraulic lines. The force feedback circuit comprises a first force feedback hydraulic line, a second force feedback hydraulic line and a force feedback hydraulic actuator. The first feedback line extends between the first and second hydraulic lines. The second feedback line extends from the first feedback line to the feedback actuator. The feedback actuator is mounted to the tandem brake valve. The first feedback line is provided with a shuttle check valve having a first inlet, a second inlet and an outlet. The first inlet is in fluid communication with the first hydraulic line and the second inlet is in fluid communication with the second hydraulic line. The outlet is hydraulically coupled to the second feedback line.
Borden Ladner Gervais Llp
Deere & Company
LandOfFree
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