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US 2003/0205186 A1Published application
Boat hoist drive unit
AssigneeClary Investment, Inc.
InventorThomas W. Clary
Life of this patent
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Abstract
A boat hoist including a vertical frame and a horizontally disposed movable platform, with the platform movable between a lowered and boat unload position and a raised, boat load position. A cable system transmits force to move the movable platform. The cable system is operated and force transmitted to it, by a hydraulic drive unit, thus eliminating problems with electrically operated drive bar units. This results in the ability to lift heavier boats with less power and faster times. An arranged mounting for the hydraulics prevents twisting under pressure
Claims6
A boat hoist, comprising:
- a vertical frame;
- a horizontally disposed movable platform attached to the vertical frame and being movable from an unload lowered position to a loaded raised position;
- a cable system for transmitting force to move said movable platform from said loaded position to said unloaded position;
- and
- a hydraulic drive unit connected to said cable system to transmit force to said cable system.
2 more elements
Dependencies are inferred from the claim text.