Title: Bucket-positioner circuit with "no detent" operation

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.

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Inventors: Papasideris, Stamos I. (Bristol, IL, US)

Application Number: 657982
Filing Date: 1976-02-13
Publication_date: 1977-03-15
Assignee: Caterpillar Tractor Co. (Peoria, IL)
Primary Class(es): 414/699 335/205
Other Classes:
US Patent Ref:

3519155	Jul, 1970	Jefferson et al.	214/764.
3659734	May, 1972	Fuzzell	214/764.
3782248	Jan, 1974	Fuzzell	214/762.

Other Refs:
Primary Examiner: Paperner, L. J.
Assistant Examiner:
Attorney: Phillips, Moore, Weissenberger, Lempio & Majestic