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US4486683A
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US
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Piezoelectric transducer using electrically poled γ-phase nylon 11
Assignee: United States Department of the Navy
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Filing: 1981-10-26
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Granted: 1984-12-04
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Expires: 2001-10-26
Abstract
Abstract Nylon 11 (γ-phase) is electrically poled after it is crystallized f commercially available nylon 11 by rapidly crystallizing it from the molten state. The γ-phase nylon 11 so obtained exhibits high piezoelectric properties when poled under different poling conditions at different temperatures. The electrically poled γ-phase nylon 11 is used in a transducer.
Inventors
- 👤 Brian A. Newman
- 👤 Kook D. Pae
- 👤 Jerry I. Scheinbeim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:44
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/01; H10N30/09; H10N30/098; H10N30/80; H10N30/85; H10N30/857
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
A piezoelectric transducer which comprises: an electrically poled γ-phase nylon 11 sample; a pair of electrodes electrically connected to said γ-phase nylon 11 sample.
Claim 2
Dependent Claim
24 words
A piezoelectric transducer which comprises: an electrically poled γ-phase nylon 11 sample; a pair of electrodes electrically connected to said γ-phase nylon 11 sample.
Claim 3
Dependent Claim
45 words
The transducer of claim 1 wherein said γ-phase nylon 11 sample is in the form of a sheet rolled on a first of said pair of electrodes with the inner surface of said sheet being in contact with the first of said pair of electrodes.
Claim 4
Dependent Claim
17 words
The transducer of claim 2 wherein the first of said pair of electrodes is a metallic wire.
Claim 5
Dependent Claim
30 words
The transducer of claim 3 wherein the second of said pair of electrodes is a metallic film in contact with the outer surface of said sheet of γ-phase nylon 11.
Claim 6
Dependent Claim
19 words
The transducer of claim 4 wherein said sheet of γ-phase nylon 11 is embedded in a flat outer layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |