End surface gear-type overload protection device for...

Details End surface gear-type overload protection device for... End surface gear-type overload protection device for...

2008-03-18

2008-03-18

Marcelo, Emmanuel M (Department: 3654)

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

C254S350000, C254S358000, C254S372000

Reexamination Certificate

active

07344121

ABSTRACT:
An end surface gear-type overload protection device for manually operated hoists that utilizes a disc-shaped spring to control tension such that when the gears are in a leftward rotation and engagement, operation continues normally. However, during rightward rotation and the disabling thereof is instructed due to the clutch-type ratchet overload protection device, when in the “overload prevention” operations mode, if the set load of the disc-shaped spring is exceeded, the clutch-type gear wheel after sensing such allows the operating lever to spin in neutral and thereby discontinue operation. Additionally, it is possible to simply adjust the operating configuration to the “non-overload prevention” operations mode to conduct operation under overload conditions.

REFERENCES:
patent: 4103872 (1978-08-01), Hirasuka
patent: 4348011 (1982-09-01), Honda
patent: 6224039 (2001-05-01), Okamoto et al.

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