Hydraulic transom lift

Ships – Mother ship – floating landing platform – and harbor – Vessel carrier

Reexamination Certificate

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Details

C114S369000, C114S371000, C405S003000

Reexamination Certificate

active

11090827

ABSTRACT:
Devices, apparatus and systems for raising and lowering watercraft such as personal watercraft, jet skis, inflatables from transoms on boats, from bulkheads and from docks, and for raising and lowering other types of vessels. A single actuator such as a fluid operated cylinder and single piston can raise and lower a cradle that supports the personal watercraft. An crank bracket can be fixably attached to a crank shaft, and an arm which supports the cradle can be fixably attached to the crank shaft. The arm can be extendable to different lengths. The cradle can include a self-leveling carriage that uses rollers to roll on a curved surface of the cradle allowing the supported watercraft to remain in a substantially level position thereon. An adjustable swivel mount can also be used to lock the cradle to the arm in a fixed orientation.

REFERENCES:
patent: 582069 (1897-05-01), Leslie
patent: 2185083 (1939-12-01), Horton
patent: 2761571 (1956-09-01), Adams
patent: 3021965 (1962-02-01), Harvey
patent: 3244300 (1966-04-01), Erdody
patent: 5133275 (1992-07-01), Maurizio
patent: 5184913 (1993-02-01), Meriwether
patent: 5544606 (1996-08-01), Schmidt, Jr.
patent: 5664516 (1997-09-01), Breeden
patent: 5669324 (1997-09-01), Muir, III
patent: 6003463 (1999-12-01), Giesler
patent: 6327992 (2001-12-01), Martin
patent: 6474256 (2002-11-01), Vogel
patent: 6598549 (2003-07-01), Voegeli
patent: 6782842 (2004-08-01), Alvord
patent: 6786170 (2004-09-01), Trowbridge
patent: WO 2004/022421 (2004-03-01), None

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