Piezoelectric coaxial cable

Details Piezoelectric coaxial cable Piezoelectric coaxial cable

1984-11-20

1986-12-16

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310338, 310357, 310800, H01L 4108

Patent

active

046299254

ABSTRACT:
A piezoelectric coaxial cable comprises a central stretchable electrical conductor (1), preferably formed from a low melting point metal alloy, a piezoelectric intermediate layer (2), preferably formed from a vinylidene fluoride polymer which has been stretched and radially polarized to render it piezoelectric, and an outer electrical conductor (3).
The intermediate layer has a ratio R of its internal radius to its external radius which is preferably not more than 0.5 and especially not more than 0.4. This construction enables coaxial cables to be formed without voiding or breaking of the internal conductor during stretching.

REFERENCES:
patent: 3750127 (1973-07-01), Ayers et al.
patent: 3798474 (1974-03-01), Cassand et al.
patent: 3862477 (1975-01-01), Ayers et al.
patent: 4183010 (1980-01-01), Miller
patent: 4303733 (1981-12-01), Bulle et al.
patent: 4369391 (1983-01-01), Micheron
patent: 4378721 (1983-04-01), Kaneko et al.

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