Sonic transducer

Details Sonic transducer Sonic transducer

1980-07-25

1982-09-28

Grimley, A. T.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

179111R, 181150, H04R 1900

Patent

active

043520391

ABSTRACT:
A sonic transducer device for vibrating windows and glass partitions in the uman ear sensitivity range to prevent the capture of conversation by placing an interfering vibration on the windows or glass partitions.

REFERENCES:
patent: 2341275 (1944-02-01), Holland
patent: 2796467 (1957-06-01), Kock
patent: 3311712 (1967-03-01), Cain
patent: 4048454 (1977-09-01), Barcus et al.
patent: 4098370 (1978-07-01), McGregor et al.

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