Frangible sailboard fin retaining member

Details Frangible sailboard fin retaining member Frangible sailboard fin retaining member

1991-05-10

1992-07-28

Basinger, Sherman

Buoys, rafts, and aquatic devices

Water skimming or walking device

Having stabilizing surface

441 74, 114 392, 114127, B63B 3579

Patent

active

051336812

ABSTRACT:
A frangible sailboard fin retainer and method of releasably retaining a fin to a sailboard fin box including forming complementary openings in the fin and the fin box, inserting a bolt assembly having a bolt and a threaded female threaded member joining the fin and fin box. A portion preferably a position of the threaded member is brittle and breakable upon impact of the fin as a result of an aftward blow on the fin.

REFERENCES:
patent: 1730844 (1929-10-01), Dupuis
patent: 3564632 (1971-02-01), Bahne, Jr.
patent: 3846030 (1974-11-01), Katt
patent: 4052826 (1977-10-01), Chisholm
patent: 4398485 (1983-08-01), Diziere
patent: 4528924 (1985-07-01), Marker et al.
patent: 4701144 (1987-10-01), DeWitt, III
patent: 4846745 (1989-07-01), Lobe
patent: 4964826 (1990-10-01), Lobe
Boards, No. 73, Jan./Feb. 1991, "20 Minutes with Naish."
"High Fidelity Fin System," Slalom 260/Slalom 270, Ultra Sport (UK) Ltd.
Wind Shear Products, "Breakaway FIN TABS".

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