Patent US4128693A successfully refreshed from Google Patents.
US4128693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire coated with fluorocarbon blend
Assignee: DELTA SURPRENANT WIRE AND CABLE Inc
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Filing: 1977-05-05
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Granted: 1978-12-05
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Expires: 1997-05-05
Abstract
Abstract A composition comprising a blend of (a) from 55 to 95% by weight of a tetrafluoroethylene polymer and (b) from 5 to 45% by weight of a copolymer of tetrafluoroethylene and an ether of the formula CF2=CF-O-R, wherein R is a perfluoroalkyl radical of 1-5 carbon atoms, has markedly improved mechanical properties when used as a wire coating and particularly increased resistance to flex cracking as compared to polytetrafluoroethylene alone.
Inventors
- 👤 Kewal S. Dhami
- 👤 Elmer W. Bennett
- 👤 Pearl Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:38
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/20; B05D7/50; B05D7/56; B05D7/58; B29; B29C; B29C48/00; B29C48/022; B29C48/03; B29C48/06; C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/18; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; H01B3/445; B05D5/00; B05D5/08; B05D5/083; B29C48/05; B29K; B29K2027/00; B29K2027/12; B29K2027/18; C08; C08L; C08L2205/00; C08L2205/02; C08L27/00; C08L27/02; C08L27/12; C08L27/18; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
Wire coated with an extruded coating composition comprising a blend of (a) from 55 to 95% by weight of a tetrafluoroethylene polymer and (b) from 5 to 45% by weight of a copolymer of tetrafluoroethylene and an ether of the formula CF 2 ═CF--O--R wherein R is a perfluoroalkyl radical of 1-5 carbon atoms.
Claim 2
Dependent Claim
54 words
Wire coated with an extruded coating composition comprising a blend of (a) from 55 to 95% by weight of a tetrafluoroethylene polymer and (b) from 5 to 45% by weight of a copolymer of tetrafluoroethylene and an ether of the formula CF 2 ═CF--O--R wherein R is a perfluoroalkyl radical of 1-5 carbon atoms.
Claim 3
Dependent Claim
28 words
The wire of claim 1 coated with a composition comprising a blend of (a) 60 to 80% of the polymer and (b) 20 to 40% of the copolymer.
Claim 4
Dependent Claim
12 words
The wire of claim 1 in which R is a perfluoropropyl radical.
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) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |