Electricity: electrical systems and devices – Electric charge generating or conducting means – For application to living beings
Patent
1977-04-29
1978-10-03
Envall, Jr., R. N.
Electricity: electrical systems and devices
Electric charge generating or conducting means
For application to living beings
256 10, H05C 104
Patent
active
041187520
ABSTRACT:
An apparatus for collecting shellfish and the like comprises a first fence anchored in the ground to enclose a collection area, said fence comprising wall sections of a height to be scaled by shellfish, each of said wall sections having exposed on only the inner surface thereof a pair of vertically spaced conductors spaced less than the length of the shellfish and so as to be in the advancing path of the shellfish scaling the wall section from the inner side thereof. Means are provided for applying intermittent voltage pulses continuously to the conductors which pulses are spaced apart a time interval less than the time required for the shellfish to span the space therebetween.
REFERENCES:
patent: 2400869 (1946-05-01), Kennedy
patent: 3868545 (1975-02-01), Caron
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