Surfboard

Details Surfboard Surfboard

1977-04-01

1978-07-18

Blix, Trygve M.

Ships

Watercraft with means used in providing sailpower

Having specifically defined hull shape

9310E, 9 2S, B63H 904

Patent

active

041008707

ABSTRACT:
A sailboard having an unstayed rig comprises a mast mounted by a universal joint on a surfboard having a retractable keel. A sail having a neck and a lower bolt-rope is attached between the mast and nocks of spars fixed to the mast for the retention and adjustment of the mast and sail. The lower bolt-rope of the sail extends from the nocks of the spars to the mast at a downward inclination, the spars being fixed to the mast above the neck of the sail. The surfboard is provided with a coupling portion for coupling to a similar surfboard by a coupling member to form a composite surfer.

REFERENCES:
patent: 350123 (1886-10-01), Ferguson
patent: 2593806 (1952-04-01), Steele
patent: 2741782 (1956-04-01), Muller
patent: 2776637 (1957-01-01), Chadwick
patent: 2927799 (1960-03-01), Schnitzler
patent: 2944505 (1960-07-01), Berge
patent: 3273528 (1966-09-01), Kiefer
patent: 3374495 (1968-03-01), Joyce
patent: 3409920 (1968-11-01), Brownley
patent: 3455261 (1969-07-01), Perrin
patent: 3996868 (1976-12-01), Schagen

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