Overload indication device for a lever hoist

Details Overload indication device for a lever hoist Overload indication device for a lever hoist

1978-11-09

1981-08-11

Yusko, Donald J.

Communications: electrical

Condition responsive indicating system

Specific condition

74523, 116 68, 116143, 200 6158R, 200 85R, 254369, 340666, B66C 300, G08B 2100

Patent

active

042837227

ABSTRACT:
An overload indication device for a lever hoist comprises an operating lever consisting of a main lever and a handle having one end pivoted to the main lever, a spring for normally holding the handle in an aligned position with the main lever, a magnification lever for deforming the spring by the rocking movement of the handle by a force corresponding to an overloading and a warning device for warning of the overloading, such as a buzzer, whistle or colored indicator adapted to be operated when the handle rocks to assume an angular position relative to the main lever.

REFERENCES:
patent: 1175850 (1916-03-01), Welker
patent: 2988040 (1961-06-01), Aitken
patent: 3072264 (1963-01-01), Sennebogen
patent: 3123814 (1964-03-01), Aitken
patent: 3148659 (1964-09-01), Aitken
patent: 3834550 (1974-09-01), Eiler
patent: 3876182 (1975-04-01), Hansson
patent: 4112750 (1978-09-01), Murakami

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