Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1976-09-03
1979-04-24
Wyche, Benjamin W.
Machine element or mechanism
Control lever and linkage systems
Elements
747105, G05G 506, F16H 144
Patent
active
041505867
ABSTRACT:
A control mechanism for shifting the differential lock mechanism of a vehicle between unlocked and locked positions. The differential lock is hydraulically operated and is controlled by a two position hydraulic valve. A control link extends from the hydraulic valve to the control mechanism. When the control link is disposed in a retracted position the differential lock will be disposed in an unlocking position, and when the control link is disposed in an extended position the differential lock will be in its locking position. The control mechanism includes a pivoted cam-like member and a pivoted catch member provided with cooperating surfaces, biasing means operable to bias the cam-like member to a retracted position and actuator means operable to shift the cam-like member away from its retracted position through engaged and stop positions to a release position. The cooperating surface means on the cam-like member and pivoted catch are operable to stop the movement of the cam-like member in its stop position as the cam-like member is shifted away from its retracted position upon an initial application of force, to hold the cam-like member in the engaged position as the cam-like member is biased away from the stop position after the discontinuance of the initial application of force, to permit the cam-like member to be shifted through the stop position to the release position upon a subsequent application of force, and to then permit the cam-like member to be returned to its retracted position by the biasing means after the discontinuance of the subsequent application of force.
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patent: 3292720 (1966-12-01), Harvey
Massey-Ferguson Inc.
McKenzie, Jr. Frank H.
Thompson John C.
Wyche Benjamin W.
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