Die drawing process and apparatus for piezoelectric polymer films and tubes
US4800048A · kind A · utility
10Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/098
Abstract
Apparatus and processes for preparing polymeric piezoelectric films of one or more layers or tubular products having a central wire core by drawing a suitable polymeric blank through either a flat or a conically tapered drawing die having associated electrical field producing means, to simultanelusly stretch and pole the polymeric material within the die chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.