Winch with compact, high efficiency and high ratio gearing suita

Details Winch with compact, high efficiency and high ratio gearing suita Winch with compact, high efficiency and high ratio gearing suita

1979-05-07

1982-05-11

Jillions, John M.

Implements or apparatus for applying pushing or pulling force

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

Device includes rotatably driven, cable contacting drum

74781R, 192 8R, 192 18A, B66D 108, B66D 122

Patent

active

043289541

ABSTRACT:
The drum of a winch suitable for cranes is driven by gearing compactly arranged within the drum, leaving room also for a free fall dog clutch when desired. The gearing is of the compound planetary type which can provide very high ratios with low friction. The low friction yields greater efficiency, and permits retaining the gearing in operation idly during free fall, ready for fail-safe braking using it. A separate brake is provided for stopping free fall, when free fall is provided. The winch motor is preferably of the two unit type, with valving for two speeds. Operation of either manual valve (normal operation or free fall) from its neutral position neutralizes the other. Numerous automatic valves are included in a valving block, providing simplicity of piping.

REFERENCES:
patent: 2351654 (1944-06-01), Anderson
patent: 3370832 (1968-02-01), Spyridakis
patent: 3519247 (1970-07-01), Christison
patent: 4090693 (1978-05-01), Hoehn et al.
patent: 4118013 (1978-10-01), Christison et al.
patent: 4161126 (1979-07-01), Winzeler
patent: 4185520 (1980-01-01), Henneman et al.

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