US4136715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite article from oriented copolyetherester elastomers
Assignee: EIDP Inc
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Filing: 1977-04-28
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Granted: 1979-01-30
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Expires: 1997-04-28
Abstract
Abstract A composite article fabricated by a process comprising (1) bringing into intimate contact two copolyetherester elastomers having melting points differing by at least 20° C., the copolyetherester elastomer (A) of higher melting point being in the form of a plurality of oriented strands, tapes or films and (2) heating the resulting assembly to a temperature between the melting point of the two elastomers to cause fusion of copolyetherester elastomer (B) of lower melting point while maintaining the orientation of copolyetherester elastomer (A).
Inventors
- 👤 Charles E. McCormack
- 👤 Martin L. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:52
CPC Classifications
B; B32; B32B; B32B1/00; B32B1/08; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/34; B29C70/347; B29D; B29D29/00; B29D29/10; B32B27/00; B32B27/06; B32B27/08; C; C08; C08J; C08J5/00; C08J5/04; C08J5/047; C08J5/048; C08L; C08L67/00; C08L67/02; C08L67/025; B29K; B29K2021/00; B29K2067/00; B32B2307/00; B32B2307/50; B32B2307/514; B32B2597/00; C08J2367/00; C08J2367/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
In a flexible hose of generally thin wall construction, the hose having a core composed of a helical wrapping of thermoplastic elastomeric tape with adjacent turns overlapping, which core is surrounded by a jacket, the improvement wherein the tape which makes up the core is composed of an oriented copolyetherester elastomer that is the reaction product of poly(tetramethylene oxide)glycol having a number average molecular weight of about 975, 1,4-butanediol, and dimethylterephthalate, said elastomer having a Shore D hardness of about 55 and a melting point of about 412° F. encapsulated within a second copolyetherester elastomer of lower melting point that is the reaction product of poly(tetramethylene oxide)glycol having a number average molecular weight of about 975, 1,4-butanediol, dimethylterephthalate and dimethylisophthalate, said elastomer having a Shore D hardness of about 40 and a melting point of about 355° F. and wherein said jacket is composed of a second wrapping of the same elastomeric tape wound helically in the opposite direction from the first, the aforesaid wrappings being brought together through thermal fusion of the contiguous surfaces.
Claim 2
Dependent Claim
175 words
In a flexible hose of generally thin wall construction, the hose having a core composed of a helical wrapping of thermoplastic elastomeric tape with adjacent turns overlapping, which core is surrounded by a jacket, the improvement wherein the tape which makes up the core is composed of an oriented copolyetherester elastomer that is the reaction product of poly(tetramethylene oxide)glycol having a number average molecular weight of about 975, 1,4-butanediol, and dimethylterephthalate, said elastomer having a Shore D hardness of about 55 and a melting point of about 412° F. encapsulated within a second copolyetherester elastomer of lower melting point that is the reaction product of poly(tetramethylene oxide)glycol having a number average molecular weight of about 975, 1,4-butanediol, dimethylterephthalate and dimethylisophthalate, said elastomer having a Shore D hardness of about 40 and a melting point of about 355° F. and wherein said jacket is composed of a second wrapping of the same elastomeric tape wound helically in the opposite direction from the first, the aforesaid wrappings being brought together through thermal fusion of the contiguous surfaces.
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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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |