Fishing – trapping – and vermin destroying – Fishing – Line-attached bodies – hooks and rigs
Patent
1973-08-16
1976-08-17
Camp, Warner H.
Fishing, trapping, and vermin destroying
Fishing
Line-attached bodies, hooks and rigs
43 4222, A01K 9300
Patent
active
039745902
ABSTRACT:
A device which seeks to maintain itself in a predetermined temperature region in a body of fluid having various temperature regions as the fluid displacement volume of the device is automatically varied with temperature. The device is particularly adapted for fishing, as a bait or lure or the like is maintained within or vertically oscillates through a predetermined temperature layer or stratum in a large body of water, such as a lake or ocean or the like. However, the device may have numerous other uses in which it is desired to maintain an instrument or the like in liquid of a given temperature in a body of liquid having regions of various temperature.
REFERENCES:
patent: 2519427 (1950-08-01), Besmer
patent: 2534497 (1950-12-01), Albright
patent: 3012359 (1961-12-01), Foster
patent: 3179962 (1965-04-01), Shear et al.
patent: 3212337 (1965-10-01), McCarrick
patent: 3212436 (1965-10-01), Michelson
patent: 3305964 (1967-02-01), Wieszeck
patent: 3434351 (1969-03-01), Poitras
patent: 3540023 (1970-11-01), Potoroka, Sr.
patent: 3628274 (1971-12-01), Wojahn
patent: 3753311 (1973-08-01), Boone
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