Sail boards

Details Sail boards Sail boards

1977-01-10

1981-03-03

Spar, Robert J.

Ships

Building

Canal and ferry boats

9 2A, 9 2S, 9310F, 114 39, 114 91, B63B 708, B63B 3572, B63H 906

Patent

active

042532094

ABSTRACT:
A transportable sail board has one or more inflatable bladders, and an envelope subdivided into plural demountable longitudinal sections. Rigidifying elements cooperate with bladder and envelope to form a demountable, lengthwise rigid assembly.

REFERENCES:
patent: 2018548 (1935-10-01), Currey
patent: 2513857 (1950-07-01), Friedrich
patent: 3150385 (1964-09-01), Gerber et al.
patent: 3287754 (1966-11-01), Price et al.
patent: 3349741 (1967-10-01), Herbst
patent: 3374495 (1968-03-01), Joyce
patent: 3409920 (1968-11-01), Brownley
patent: 3487800 (1970-01-01), Schweitzer et al.
patent: 3577576 (1971-05-01), Lobb et al.
patent: 3657753 (1972-04-01), LeBlanc, Sr.
patent: 3996868 (1976-12-01), Schagen

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