Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1987-10-27
1989-04-11
Hail, III, Joseph J.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254353, 254357, B66D 114, F16D 1900
Patent
active
048199133
ABSTRACT:
A lever type hoisting machine capable of easily and securely pulling down a lower hook in no-load state. An operation wheel is rotatably supported in contact with a drive shaft and a pressure drive wheel, and an inside collision part and an outside collision part are disposed at the pressure drive wheel side part of the operation wheel and at the opposite side part, respectively, while a collision wall capable of being engaged with the inside collision part is formed on the pressure drive wheel, and a collision element capable of being engaged with the outside collision part is formed in a regulating member held movably only in the axial direction on the drive shaft in contact with the opposite side of the pressure drive wheel of the operation wheel, and a secure rotation in the hoist-down direction of the pressure drive wheel in no-load state is guaranteed, so that it is possible to pull down the lower hook in continuous state.
REFERENCES:
patent: 3047114 (1962-07-01), Stevens
patent: 4469308 (1984-09-01), Nakamura
patent: 4471946 (1984-09-01), Maeda
patent: 4474360 (1984-10-01), Maeda
patent: 4479635 (1984-10-01), Maeda
patent: 4483519 (1984-11-01), Nakamura
patent: 4512555 (1985-04-01), Nakamura
Hail III Joseph J.
Vital Kogyo Kabushiki Kaisha
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