Communications – electrical: acoustic wave systems and devices – Sonar counter-measures
Patent
1953-02-27
1980-05-06
Farley, Richard
Communications, electrical: acoustic wave systems and devices
Sonar counter-measures
116 27, 181142, H04K 300
Patent
active
042020476
ABSTRACT:
1. An acoustic decoy adapted to operate underwater, said decoy comprising a otor means, a circular spindle means connected to said motor means and adapted to be rotated thereby, said spindle means having a pair of axially aligned spaced parallel discs, a plurality of radially extending sockets formed in the periphery of each disc with the sockets of respective discs being in axial alignment with each other, a roller comprising a shaft slidably and loosely supported within each pair of aligned sockets, each of said rollers comprising a pair of hammers on the associated shaft, and a casing means surrounding said spindle means, on the sides and one end thereof, said casing means comprising a cylindrical casing concentric with the axis of rotation of said spindle means, said sockets terminating radially inwardly from said casing a distance sufficient to receive the associated shaft with its hammers spaced from said casing when said spindle means is not rotating, whereby said hammers are moved by centrifugal force to impinge against the sides of said casing whenever the spindle is rotated.
REFERENCES:
patent: 311255 (1885-01-01), Pedersen
patent: 935750 (1909-10-01), Gale
patent: 1292755 (1919-01-01), Geraghty
patent: 2395862 (1946-03-01), Freeman
patent: 2548905 (1951-04-01), Odenweller et al.
Boyer George L.
Chrisler, deceased Vivian L.
Gilbert William H.
Farley Richard
Hodges Q. E.
Sciascia R. S.
The United States of America as represented by the Secretary of
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