Ships – Boats – boat component – or attachment – Inflatable
Patent
1990-09-18
1991-10-15
Basinger, Sherman
Ships
Boats, boat component, or attachment
Inflatable
441 40, B63B 708
Patent
active
050564536
ABSTRACT:
An apparatus for self-righting a rigid inflatable boat in which the boat includes an elongated hull having a determinable center of gravity and beam width. The boat hull has an elongated rigid bottom and inflatable sidewalls which have top, bottom and inner edges. An inflatable arch member having first and second leg portions extending upwardly and inboard from opposite sidewalls of the hull converges at a central point spaced outwardly a first predetermined vertical distance above the top edges. The first predetermined distance is at least equal to the sum of one-half of the beam of the hull, plus a distance equal to the vertical distance, if any, at which the center of gravity may be located above the sidewalls' bottom edges. Each leg portion has an axial centerline which extends upwardly and inwardly substantially between its respective sidewall and the central point. Each axial centerline passes vertically above the inner edge of its respective sidewall at a vertical level above the bottom edge a distance equal to at least one-half of the vertical distance between the central point and the bottom edge. The inflatable arch member is sized to have an overall width substantially not greater than the beam of the boat and to provide a total displacement sufficient to lift the boat. The arch member is positioned along the elongated boat hull aft of the center of gravity.
REFERENCES:
patent: 3054124 (1962-09-01), Silverstone
patent: 3268925 (1966-08-01), Serra
patent: 4001905 (1977-01-01), Givens
Specifications (2 sheets) for Zodiac Hurricane No. 64010 of Hurricane Marine Co., of Richmond, British Columbia, Canada.
Basinger Sherman
Bellamy Glenn D.
Brahan Thomas J.
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