US4783052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite article having insert
Assignee: Phillips Petroleum Co
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Filing: 1987-11-13
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Granted: 1988-11-08
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Expires: 2007-11-13
Abstract
Abstract A fiber reinforced composite article such as a valve element is provided with a reinforcing insert.
Inventors
- 👤 Larry J. Walden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:18
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/02; F16K27/0209; F16K27/0218; B; B29; B29C; B29C70/00; B29C70/68; B29C70/86; B29L; B29L2031/00; B29L2031/748; B29L2031/7506; F02; F02D; F02D9/00; F02D9/08; F02D9/10; F02D9/107
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A valve element formed from a thermoplastic matrix containing fiber reinforcement, said valve element having a disc-like shape and an outer generally circular circumference through which extends a disc plane of symmetry and a pair of opposed bores extending generally diametrically inwardly toward the center of the disc from the outer circumference; at least one of said opposed bores being at least partly defined by an insert which is encapsulated by the thermoplastic matrix so as to form an integral part of the valve element, wherein the insert is characterized as a tube having a pair of opposed generally radially outwardly protruding fins extending generally longitudinally along an exterior surface of said tube, said opposed fins being positioned generally in the disc plane.
Claim 2
Dependent Claim
123 words
A valve element formed from a thermoplastic matrix containing fiber reinforcement, said valve element having a disc-like shape and an outer generally circular circumference through which extends a disc plane of symmetry and a pair of opposed bores extending generally diametrically inwardly toward the center of the disc from the outer circumference; at least one of said opposed bores being at least partly defined by an insert which is encapsulated by the thermoplastic matrix so as to form an integral part of the valve element, wherein the insert is characterized as a tube having a pair of opposed generally radially outwardly protruding fins extending generally longitudinally along an exterior surface of said tube, said opposed fins being positioned generally in the disc plane.
Claim 3
Dependent Claim
19 words
A valve element as in claim 1 wherein the fiber reinforcement in the valve element is predominantly random mat.
Claim 4
Dependent Claim
25 words
A valve element as in claim 2 wherein the thermoplastic matrix is selected from the group consisting of polyethylene, polypropylene, polytetrafluoroethylene, polyamide and poly(arylene sulfide).
Claim 5
Dependent Claim
27 words
A valve element as in claim 3 wherein the fiber reinforcement in the valve element is selected from the group consisting of carbon fiber and glass fiber.
Claim 6
Dependent Claim
39 words
A valve element as in claim 4 wherein the tube forming the insert has an inside surface which determines the bore, wherein said inside surface is noncylindrically shaped so as to provide engagement with a shaft when inserted thereinto.
Claim 7
Dependent Claim
21 words
A valve element as in claim 5 wherein said inside surface is characterized by at least one pair of opposed flats.
Claim 8
Dependent Claim
31 words
A valve element as in claim 6 wherein the thermoplastic matrix comprises a poly(arylene sulfide) and the fiber reinforcement is selected from the group consisting of glass fiber and carbon fiber.
Claim 9
Dependent Claim
15 words
A valve element as in claim 7 wherein the thermoplastic matrix comprises a poly(phenylene sulfide).
Claim 10
Dependent Claim
20 words
A valve element as in claim 6 wherein the tube is formed from a pair of stamp molded tube halves.
Claim 11
Dependent Claim
15 words
A valve element as in claim 9 wherein the tube halves are constructed of metal.
Claim 12
Dependent Claim
19 words
A valve element as in claim 9 wherein the tube halves are constructed of composite sheet or unidirectional tape.
References Cited (Backward Citations)
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Cited
US4227675A
Cited
US4645565A
Cited
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Cited
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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) | 1991-11-08 | 1992-05-09 | 1992-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-08 | 1996-05-09 | 1996-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-08 | 2000-05-09 | 2000-11-08 | $7700.00 | Window Closed / Lapsed |