B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
188/205
B60T 7/06 (2006.01) B60T 7/04 (2006.01) G05G 5/06 (2006.01)
Patent
CA 1056316
SERVICE BRAKE LOCK MECHANISM Abstract of the Disclosure A lock mechanism includes a locking pawl which is movable to a pedal-lock position for preventing a brake pedal from returning from a brake-engage to a normal brake-release position. The pawl is biased toward a pedal-lock position but is normally held in a pedal-release position through means of an actuator rod that is biased to a pawl-retain position. The rod has a foot-engageable portion so located that an operator can use one foot to simulta- neously move the brake pedal to its brake-engage position and move the actuator to a pawl-release position permitting the pawl to move to its pedal-lock position. The lock mechanism is con- structed such that once the operator removes his foot from the locked brake pedal the actuator rod will move to an intermediate position spaced from the brake pedal and in which it is held by the engaged locking pawl so as to permit the operator to re- engage his foot with the brake pedal to overtravel the latter without again engaging the actuator rod, such overtravelling re- leasing the locking pawl and hence the actuator rod whereby the biasing force acting on the rod returns it and the pawl respec- tively to their pawl-retain and pedal release positions.
253767
Ahlschwede Brian A.
Whisler Edwin L.
LandOfFree
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