Quick change fin assembly for buoyant test vehicles

Details Quick change fin assembly for buoyant test vehicles Quick change fin assembly for buoyant test vehicles

1995-02-21

1997-01-28

Avila, Stephen

Buoys, rafts, and aquatic devices

Water skimming or walking device

Having stabilizing surface

A63C 1500

Patent

active

055973370

ABSTRACT:
A quick change fin assembly for attachment to a buoyant test vehicle (BTV). he fin assembly comprises a fin body bolted to a T-shaped base portion. A resilient sheet is placed between the fin body and the base to lessen the transmission of vibrations from the fin body to the base. The assembly is attached to the truncated cone surface of the tail portion of the BTV. For each fin, a longitudinal T-shaped slot is cut into the surface of the tail portion starting from the truncated end and extending along the axis of the BTV. The T-shaped base slides into the slot from the truncated end to secure the fin assembly in a radial direction with respect to the axis of the BTV. A conical end piece is threaded onto the tail portion to clamp the fin assembly in an axial direction. The exposed surface of the T-shaped base is shaped to conform to the tail portion and to provide a smooth transition between the tail portion and the fin body.

REFERENCES:
patent: 3579681 (1971-05-01), Pope, III et al.
patent: 3659300 (1972-05-01), Johnson
patent: 4439166 (1984-03-01), Maxwell
patent: 4804347 (1989-02-01), Ross
patent: 4904215 (1990-02-01), Sherwood
patent: 5007868 (1991-04-01), Fry
patent: 5176553 (1993-01-01), Tuttle

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