Device for automatic raising of fish traps, crayfish pots, nets

Details Device for automatic raising of fish traps, crayfish pots, nets Device for automatic raising of fish traps, crayfish pots, nets

1975-06-20

1977-07-12

Blix, Trygve M.

Ships

Warships

Armored

9 8R, 43100, 43102, B63G 822

Patent

active

040346935

ABSTRACT:
A device for automatically raising fish traps, crayfish pots, nets and the like comprising a cylinder of compressed gas connected through a control valve to a buoyancy chamber provided with a discharge opening and adapted to be filled with water when the trap is submerged, the operation of the control valve is to allow gas to pass from the cylinder to the buoyancy chamber and expel water from the buoyancy chamber being effected through a timing mechanism or an electrical circuit activated by a signal transmitted through the water.

REFERENCES:
patent: 1375055 (1921-04-01), Lodato
patent: 2453149 (1948-11-01), McCutchen
patent: 3126559 (1964-03-01), Alexander
patent: 3193853 (1965-07-01), Alexander
patent: 3293676 (1966-12-01), Link
patent: 3818523 (1974-06-01), Stillman
patent: 3822662 (1974-07-01), Morita et al.
patent: 3852908 (1974-12-01), Christopher
patent: 3860983 (1975-01-01), Furth et al.

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