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US 5,860,635 AGranted
Winch having hydraulic speed control and planetary gear system
AssigneeSeascape Systems Limited
InventorsJeffrey Morfitt, Barrie Freeke
Life of this patent
Estimating the term…
Abstract
A new and useful winch comprising a cable drum; a motor operatively connected to drive a cable drum; a fall arrestor operatively connected to a cable drum and having no power input requirement and a gear reduction group through which a motor and fall arrestor are operatively connected to a cable drum.
Claims16
A winch comprising:
- a cable drum selectively rotatable in a deployment mode or a retrieval mode;
- a main shaft operatively connected to said drum for operation in said retrieval mode;
- a motor operatively connected to said shaft for operation in said retrieval mode;
- a fall arrestor operatively connected to said drum for operation in said deployment mode only for controlling speed of deployment of a cable from said drum;
- a multi-stage planetary gear system operatively connected between said cable drum and said fall arrestor in said deployment mode, and between said cable drum and said shaft in said retrieval mode;
- and
- brake means operatively connected to said planetary gear system and selectively moveable between an applied and a released position for selectively stopping the rotation of said cable drum when said cable drum is in said deployment mode;
- and wherein when said brake means is in said released position, said drum is in said deployment mode, and when said brake means is in said applied position, said drum is in said retrieval mode.
5 more elements
Dependencies are inferred from the claim text.