1974-02-20
1976-05-11
Blix, Trygve M.
9 11A, B63B 700
Patent
active
039552292
ABSTRACT:
End wall compartment closures for the stern parts of inflatable sponsons or pontoons for rubber boats are disclosed to enhance the gliding motion or planing action of the boat through the water and prevent distortion of the sponsons under variable inflation pressures while increasing the load carrying capacity and stability of such craft. In the several embodiments each of the elongated tubular sponsons that extend along the sides of a rubber boat is provided with a rigid-non-deformable closure wall that is essentially vertical to the longitudinal axis of the sponson or is in the form of an annular or tubular part or insert in the stern of the sponsons. The tubular inserts can be pot-shaped with circumferential grooves or ribs on the sides and have a bottom wall which forms the end compartment wall or closure wall for the sponson. Provision is made for extendable pressing or compression rods on the inside of a sponson joining and supporting one sponson to another by means of their rigid end wall compartment closures. Such internal expanding rods can be used to allow the sponson to fill up with air from the atmosphere through a valve in the end wall of one of the compartments. The end wall compartment closures at the stern provides for the attachment of eyelets, supports, handles, signal units and trim surfaces as well as airtight valves.
REFERENCES:
patent: 1620867 (1927-03-01), Boyle
patent: 1794417 (1931-03-01), Nador
patent: 2413985 (1947-01-01), Manson et al.
patent: 2717849 (1955-09-01), Rempel et al.
Blix Trygve M.
Sotelo Jesus D.
Thomas Bruce K.
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