Ships – Boats – boat component – or attachment – With wheeled buoyant landing or launching aid
Patent
1992-12-22
1994-06-14
Sotelo, Jesus D.
Ships
Boats, boat component, or attachment
With wheeled buoyant landing or launching aid
2804141, B60P 310
Patent
active
053200586
ABSTRACT:
A self-contained trailer mountable boat launching assembly makes it possible for one person to launch a boat from a launching ramp. A small air compressor and accumulator tank are mounted on the trailer frame in combination with a control valve and an operating cylinder. A remote switch routes pressure from the tank through the control valve to operate the cylinder which provides a launching force on the prow of the boat. In one embodiment, the end of the operating cylinder is mounted to a flexible member having an open hook in the end which passes up and through a laterally extending eye on the prow of a boat. A roller aft of the hook changes direction of the flexible member to pull the boat off the trailer and allows the hook to automatically release from the eye as the boat moves in response to the operating cylinder rod moving opposite the launching direction. Linear movement of the hook is magnified by a mechanical advantage. In a second embodiment, the components which supply motive power to a cylinder are the same as in the first embodiment, but the cylinder operates directly against the prow of the boat. The end of the cylinder has a cushioning element which doubles as a stop. The prow of the boat is held in trailering position against the cushioning element when the cylinder is retracted. Lateral control of the boat can be maintained until launch is triggered by actuation of the cylinder.
REFERENCES:
patent: 3140003 (1964-07-01), Horner
patent: 3682335 (1992-08-01), Smyth
patent: 3848892 (1974-11-01), Reder
patent: 3951433 (1976-04-01), Starkey
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