Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Retarded or delayed type
Patent
1976-02-13
1977-03-15
Paperner, L. J.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Retarded or delayed type
335205, E02F 514
Patent
active
040119599
ABSTRACT:
In a loader vehicle having a bucket pivotally supported upon a lift frame, a tilt jack interconnected between the lift frame and bucket by tilt linkage and a detented control valve by which the tilt jack is operated, two proximity switches on the tilt jack cylinder and a magnet on the tilt jack rod. Momentary operation of one of the switches causes a relay to be energized, the relay latching itself until momentary operation of the other switch unlatches the relay. Power is supplied to the detent-disabling mechanism through the relay contacts to disengage the control valve from a detented position as the bucket reaches its load position and to maintain such disengagement during loading operations.
REFERENCES:
patent: 3519155 (1970-07-01), Jefferson et al.
patent: 3659734 (1972-05-01), Fuzzell
patent: 3782248 (1974-01-01), Fuzzell
Caterpillar Tractor Co.
Paperner L. J.
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