Pallet truck automatic lift

Details Pallet truck automatic lift Pallet truck automatic lift

1976-09-27

1977-09-13

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Platform type

280 4312, B66F 324

Patent

active

040476987

ABSTRACT:
The present disclosure shows a pallet truck of the type wherein an electrically driven pump supplies a hydraulic cylinder with pressure fluid for raising the fork mechanism. For lowering the fork mechanism a dump valve exhausts hydraulic fluid from the cylinder. UP and DOWN push-button switches conventionally control the electric motor and the dump valve, respectively. The apparatus disclosed herein provides an alternate circuit which operates automatically when both push buttons are in their inactive positions and the fork mechanism is fully lowered or nearly fully lowered to raise the fork lift structure automatically a safe distance above the floor, whereupon the auxiliary circuit means becomes inactive.

REFERENCES:
patent: 3170706 (1965-02-01), Nichols

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