Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1983-06-13
1985-12-24
Braun, Leslie A.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74713, F16H 144.5, F16H 144
Patent
active
045598479
ABSTRACT:
A differential lock control system controls a hydraulically-operated differential lock via a solenoid valve. Energization of the solenoid valve is controlled by a circuit which includes a normally closed latching relay, a normally open relay and a pair of operator-controlled momentary contact switches. The control circuit further includes a pair of steering valve-operated switches coupled in parallel and to the normally closed relay. Each steering-operated switch is formed by a conductive plunger which is grounded by the steering valve housing whenever the steering valve spool is moved to the end of the valve bore to compress a resilient and electrically insulating O-ring interposed between the plunger and the valve spool.
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Anderson Lawrence V.
Newendorp Bruce C.
Sturtz Terry L.
Braun Leslie A.
Deere & Company
Diehl Dwight G.
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