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
1978-05-25
1980-11-04
Spar, Robert 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
74804, 254362, B66D 130
Patent
active
042315514
ABSTRACT:
A capstan for towing a rope which leads a marine vessel to a berth comprises a cylindrical drum having a negative crown and around which the rope is wrapped, an electric motor and a cycloid reduction gearing which connects the drum with the motor, both the motor and gearing being disposed within the drum. The motor has a shaft disposed in alignment with the axis of the drum. The reduction gearing comprises an eccentric cam mounted on one end of the shaft, a planet gear slidably mounted around the cam, and an inner gear mounted inside the drum. The inner gear meshes with the planet gear and has a number of teeth which is greater than that of the planet gear by one or more teeth. The planet gear is formed with a plurality of circular openings which are disposed on a circle of a given radius struck from the center thereof while the motor firmly carries a plurality of pins which extend upwardly through the openings. The pins are disposed on a circle of a given radius struck from the axis thereof, and support a single bracket at their upper end. The drum is rotatably supported by a bearing which is disposed between the bracket and the drum.
REFERENCES:
patent: 1637818 (1927-08-01), Hawkins
patent: 2363093 (1944-11-01), Sprake
patent: 2508121 (1950-05-01), McIver
patent: 3424036 (1969-01-01), Colgan
patent: 3994187 (1976-11-01), Milenkovic
Adams Bruce L.
Burns Robert E.
Kabushiki Kaisha Ikeda Seisakusho
Lobato Emmanuel J.
Noland Kenneth
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