US3351882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic resistance elements and methods for making same
Assignee: Polyelectric Corp
•
Filing: 1964-10-09
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Granted: 1967-11-07
•
Expires: 1984-10-09
Abstract
No abstract record available.
Inventors
- 👤 Kohler Fred
- 👤 Wallace C Rudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:03
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/144; H01C1/1406; H01C7/00; H01C7/001; H01C7/02; H01C7/027; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49101; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN ELECTRICAL ELEMENT COMPRISING OF NORMAL SOLID FIRM THERMOPLASTIC POLYMER MATERIAL CAPABLE OF BEING CROSS-LINKED AND THEREBY TO RESIST SOFTENING THEREOF AT INCREASED TEMPERATURES, SAID ELEMENT ALSO EMBODYING PARTICLES LENDING LIMITED CONDUCTIVE PROPERTIES THERETO, SAID PARTICLES HAVING A SUFFICIENTLY SMALLER TEMPERATURE COEFFICIENT OF EXPANSION THAN SAID POLYMER TEMPERATURE WHEREBY SAID PROPERTIES ARE ABRUPTLY DIMINISHED UPON REACHING A PREDETERMINED TEMPERATURE, AND ELECTRICAL CIRCUIT TERMINALS FOR SAID ELEMENT IN THE FORM OF "MESHED" CONDUCTIVE MATERIAL OF SUBSTANTIAL AREA EMBEDDED IN SAID POLYMER MATERIAL, SAID TERMINALS EXTENDING ALONG APPROXIMATELY "EQUAL POTENTIAL SURFACES" TRANSVERSELY OF THE PATHS OF CURRENT FLOW BETWEEN THE TERMINALS THROUGH THE ELEMENT, SAID POLYMER MATERIAL, AT LEAST AT THE REGION OF SAID TERMINALS, BEING CROSS-LINKED WITH THE TERMINALS IN SITU.
Claim 2
Dependent Claim
120 words
AN ELECTRICAL ELEMENT COMPRISING OF NORMAL SOLID FIRM THERMOPLASTIC POLYMER MATERIAL CAPABLE OF BEING CROSS-LINKED AND THEREBY TO RESIST SOFTENING THEREOF AT INCREASED TEMPERATURES, SAID ELEMENT ALSO EMBODYING PARTICLES LENDING LIMITED CONDUCTIVE PROPERTIES THERETO, SAID PARTICLES HAVING A SUFFICIENTLY SMALLER TEMPERATURE COEFFICIENT OF EXPANSION THAN SAID POLYMER TEMPERATURE WHEREBY SAID PROPERTIES ARE ABRUPTLY DIMINISHED UPON REACHING A PREDETERMINED TEMPERATURE, AND ELECTRICAL CIRCUIT TERMINALS FOR SAID ELEMENT IN THE FORM OF "MESHED" CONDUCTIVE MATERIAL OF SUBSTANTIAL AREA EMBEDDED IN SAID POLYMER MATERIAL, SAID TERMINALS EXTENDING ALONG APPROXIMATELY "EQUAL POTENTIAL SURFACES" TRANSVERSELY OF THE PATHS OF CURRENT FLOW BETWEEN THE TERMINALS THROUGH THE ELEMENT, SAID POLYMER MATERIAL, AT LEAST AT THE REGION OF SAID TERMINALS, BEING CROSS-LINKED WITH THE TERMINALS IN SITU.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |