US4489113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluororubber-based heat-shrinkable tubes and composition therefor
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1982-02-05
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Granted: 1984-12-18
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Expires: 2002-02-05
Abstract
Abstract A heat shrinkable tube comprising a mixture of 100 parts by weight of fluororubber and 10 to 100 parts by weight of a crystalline polymer, said mixture being expanded into a tubular form after cross-linking. The tube has high heat resistance and oil resistance and is useful for reconnection of connectors of communication cables and electric cables a for the prevention of corrosion of steel which can be used at high temperatures.
Inventors
- 👤 Keiji Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:58
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/003; B29K; B29K2019/00; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1331
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
62 words
A heat-shrinkable tube comprising a mixture of 100 parts by weight of fluororubber and 10 to 100 parts by weight of ethylene vinyl acetate copolymer having a vinyl acetate content of 10 to 30% by weight or an ethylene-ethyl acrylate copolymer having an ethyl acrylate content of 8 to 20% by weight, said mixture being expanded into a tubular form after cross-linking.
Claim 2
Dependent Claim
62 words
A heat-shrinkable tube comprising a mixture of 100 parts by weight of fluororubber and 10 to 100 parts by weight of ethylene vinyl acetate copolymer having a vinyl acetate content of 10 to 30% by weight or an ethylene-ethyl acrylate copolymer having an ethyl acrylate content of 8 to 20% by weight, said mixture being expanded into a tubular form after cross-linking.
Claim 3
Dependent Claim
38 words
A heat-shrinkable tube as in claim 1, wherein said tube comprises a mixture of 100 parts by weight of fluororubber and 25 to 100 parts by weight of the ethylene vinyl acetate copolymer of the ethylene-ethyl acrylate copolymer.
References Cited (Backward Citations)
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Cited
USRE28688E
Cited
US3944689A
Cited
US4045402A
Cited
US4325998A
Cited
US4348312A
Cited
US4347268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |