Method of making coaxial cable
US4715098A · kind A · utility
2Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1986 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Aug 15, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
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 more preferably not more than 0.4. This construction enables coaxial cables to be formed without voiding or breaking of the internal conductor during stretching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.