Self-propelled shark-proof cage

Details Self-propelled shark-proof cage Self-propelled shark-proof cage

1976-08-05

1979-09-04

Recla, Henry J.

Surgery

Truss

Pad

1281423, 405185, 114315, 114338, 9313, 114333, B63C 1142

Patent

active

041664620

ABSTRACT:
The invention relates to a self-propelled shark-proof cage which is provided with at least one access opening and a propeller mounting frame having pivot means coupling it to the cage so that the propeller mounting frame is pivotal about two axes at right angles to each other, and the propeller mounting frame carries on it an air motor and a propeller. The frame is provided with buoyancy means so that it can be made to be of approximately the same gravity as sea-water, and the air motor is driven by compressed air so that the cage can be propelled through the water, thereby enabling abalone divers to collect abalone without fear of predators and, beacause of less exertion, for longer periods of time.

REFERENCES:
patent: 3176327 (1965-04-01), Oberth
patent: 3190256 (1965-06-01), Buie
patent: 3425231 (1969-02-01), Rehrer
patent: 3688720 (1972-09-01), Lok
patent: 3795213 (1974-03-01), Strickland
"The Advertiser", Diver's Cage Could Beat Shark Menace, published in Adelaide, Australia, Apr. 30, 1975.
"Port Lincoln Times", Shark-Proof Diver's Vehicle is Tested, May 1, 1975.

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