Ships – Boats – boat component – or attachment – With wheeled buoyant landing or launching aid
Reexamination Certificate
2007-05-15
2007-05-15
Olson, Lars A. (Department: 3617)
Ships
Boats, boat component, or attachment
With wheeled buoyant landing or launching aid
C280S414100
Reexamination Certificate
active
11175998
ABSTRACT:
A multi-use, multi-level structure can be installed in and removed from a body of water in a seasonal fashion. The structure has a lower level that includes a boat lift and an upper level that provides an entertainment area. The structure carries a buoyancy system for selectively floating the structure on the body of water or sinking the structure in the water. The buoyancy system preferably comprises a ballast system that includes an array of hydraulically interconnected ballast tanks that are vented to the atmosphere. A valve may be opened to admit water to the ballast tanks to flood the tanks. A pump is used to pump water out of the ballast tanks when desired.
REFERENCES:
patent: 3126855 (1964-03-01), Freeburg
patent: 3626447 (1971-12-01), Hindlin
patent: 3857352 (1974-12-01), Schott
patent: 3895592 (1975-07-01), King
patent: 4084529 (1978-04-01), Katernberg
patent: 4092755 (1978-06-01), Hughes
patent: 4188056 (1980-02-01), Watson
patent: 5131342 (1992-07-01), Sackett
patent: 5478166 (1995-12-01), Starr
patent: 6520102 (2003-02-01), Johnson
Float-N-Go Brochure (undated but admitted prior art).
Floatation Systems Brochure (undated but admitted prior art).
Olson Gregory S.
Towley, III Carl K.
Intellex, Inc.
Miller James W.
Olson Lars A.
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