Patent US4432883A successfully refreshed from Google Patents.
US4432883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal with teflon or rubber
Assignee: Resistic Materials Inc
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Filing: 1981-12-09
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Granted: 1984-02-21
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Expires: 2001-12-09
Abstract
Abstract A part is made of a material comprising less than 90% by weight of a polymer selected from the group consisting of polytetrafluoroethylene, polyurethane, nitrile, fluoroelastomer, and polyphenylene sulfide; and more than 10% by weight of another material, comprising about 15% to 60% by volume of grains of titanium carbide dispersed through a metal matrix.
Inventors
- 👤 Allen F. Denzine
- 👤 William E. F. Thurber, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:57
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; C; C10; C10M; C10M103/00; C10M103/02; C10M103/04; C10M103/06; C10M107/00; C10M107/38; C10M107/40; C10M107/44; C10M107/46; C10M111/00; C10M111/04; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/0413; C10M2201/042; C10M2201/0423; C10M2201/05; C10M2201/053; C10M2201/06; C10M2201/0603; C10M2201/061; C10M2201/0613; C10M2201/062; C10M2201/0623; C10M2201/065; C10M2201/0653; C10M2201/066; C10M2201/0663; C10M2201/08; C10M2201/0803; C10M2201/085; C10M2201/0853; C10M2201/086; C10M2201/0863; C10M2201/087; C10M2201/0873; C10M2201/10; C10M2201/1006; C10M2201/102; C10M2201/1023; C10M2201/103; C10M2201/1033; C10M2201/105; C10M2201/1053; C10M2201/12; C10M2201/123; C10M2201/16; C10M2201/18; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/023; C10M2213/04; C10M2213/043; C10M2213/06; C10M2213/0606; C10M2213/062; C10M2213/0623; C10M2217/00; C10M2217/04; C10M2217/0403; C10M2217/041; C10M2217/0415; C10M2217/042; C10M2217/0425; C10M2217/043; C10M2217/0435; C10M2217/044; C10M2217/0443; C10M2217/045; C10M2217/0453; C10M2217/046; C10M2217/0465; C10M2221/00; C10M2221/003; C10M2221/02; C10M2221/025; C10M2221/04; C10M2221/0405; F16C2352/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
97 words
A composition of matter comprising about 50% to about 90% by weight of a polymeric material selected from the group consisting of polytetrafluoroethylene, polyurethane, nitrile, fluoroelastomer, and polyphenylene sulfide, and about 10% to about 50% by weight of another material comprising about 15% to 60% by volume of grains of titanium carbide dispersed through a metal matrix, wherein said metal matrix comprises a nickel-chromium matrix consisting essentially by weight of about 50% to 80% nickel, about 10% to 25% chromium, up to about 16% molybdenum or tungsten, up to about 1% carbon, and the balance essentially iron.
Claim 2
Dependent Claim
97 words
A composition of matter comprising about 50% to about 90% by weight of a polymeric material selected from the group consisting of polytetrafluoroethylene, polyurethane, nitrile, fluoroelastomer, and polyphenylene sulfide, and about 10% to about 50% by weight of another material comprising about 15% to 60% by volume of grains of titanium carbide dispersed through a metal matrix, wherein said metal matrix comprises a nickel-chromium matrix consisting essentially by weight of about 50% to 80% nickel, about 10% to 25% chromium, up to about 16% molybdenum or tungsten, up to about 1% carbon, and the balance essentially iron.
Claim 3
Dependent Claim
92 words
A composition of matter comprising about 50% to about 90% by weight of a polymeric mateial selected from the group consisting of polytetrafluoroethylene, polyurethane, nitrile, fluoroelastomer, and polyphenylene sulfide, and about 10% to about 50% by weight of another material comprising about 15% to 60% by volume of grains of titanium carbide dispersed through a metal matrix, wherein said metal matrix comprises an iron-chromium matrix consisting essentially by weight of up to about 20% chromium, up to about 10% molybdenum or tungsten, up to about 2% carbon, and the balance essentially iron.
Claim 4
Dependent Claim
92 words
A composition of matter comprising about 50% to about 90% by weight of a polymeric mateial selected from the group consisting of polytetrafluoroethylene, polyurethane, nitrile, fluoroelastomer, and polyphenylene sulfide, and about 10% to about 50% by weight of another material comprising about 15% to 60% by volume of grains of titanium carbide dispersed through a metal matrix, wherein said metal matrix comprises an iron-chromium matrix consisting essentially by weight of up to about 20% chromium, up to about 10% molybdenum or tungsten, up to about 2% carbon, and the balance essentially iron.
Claim 5
Dependent Claim
27 words
A composition of matter as defined in one of claims 1 or 2 wherein said other material comprises about 45% by volume of grains of titanium carbide.
Claim 6
Dependent Claim
31 words
A composition of matter as defined in one of claims 1 or 2 comprising by weight about 50% to 80% of polytetrafluoroethylene and about 20% to 50% of said other material.
Claim 7
Dependent Claim
45 words
A composition of matter as defined in one of claims 1 or 2 comprising by weight about 60% to 80% of a polymeric material selected from the group consisting of polyurethane nitrile, fluoroelastomer, and polyphenylene sulfide, and about 20% to 40% of said other material.
Claim 8
Dependent Claim
37 words
A composition of matter as defined in claim 1, wherein said nickel-chromium matrix consists essentially by weight of about 72% nickel, about 18% chromium, about 1% molybdenum or tungsten, about 0.4% carbon, and the balance essentially iron.
Claim 9
Dependent Claim
34 words
A composition of matter as defined in claim 2, wherein said iron-chromium matrix consists essentially by weight of about 10% chromium, about 3% molybdenum or tungsten, about 0.85% carbon, and the balance essentially iron.
Claim 10
Dependent Claim
58 words
A composition of matter as defined in one of claims 1 or 2 comprising 50% to 80% by weight of polytetrafluorethylene, and 20% to 50% by weight of another material comprising 45% by volume of grains of titanium carbide dispersed through a metal matrix, said other material being in grains of a size of 37 to 250 microns.
Claim 11
Dependent Claim
37 words
A composition of matter as defined in claim 8, wherein said metal matrix consists essentially by weight of about 72% nickel, about 18% chromium, about 1% molybdenum or tungsten, about 0.4% carbon, and the balance essentially iron.
Claim 12
Dependent Claim
34 words
A composition of matter as defined in claim 8, wherein said metal matrix consists essentially by weight of about 10% chromium, about 3% molybdenum or tungsten, about 0.85 carbon, and the balance essentially iron.
Claim 13
Dependent Claim
74 words
A composition of matter as defined in one of claims 1 or 2 comprising by weight about 60% to 80% of a polymeric material selected from the group consisting of polyurethane, nitrile, fluoroelastomer, and polyphenylene sulfide, and about 20% to 40% by weight of another material comprising 45% by volume of grains of titanium carbide dispersed through a metal matrix, said other material being in grains of a size 37 to 250 of microns.
Claim 14
Dependent Claim
37 words
A composition of matter as defined in claim 11, wherein said metal matrix consists essentially by weight of about 72% nickel, about 18% chromium, about 1% molybdenum or tungsten, about 0.4% carbon, and the balance essentialy iron.
Claim 15
Dependent Claim
34 words
A composition of matter as defined in claim 11, wherein said metal matrix consists essentially by weight of about 10% chromium, about 3% molybdenum or tungsten, about 0.85% carbon, and the balance essentially iron.
Claim 16
Independent Claim
63 words
A method comprising the steps of: providing a predetermined amount of polymeric material selected from the group consisting of polytetrafluoroethylene, polyurethane, nitrile, fluoroelastomer, and polyphenylene sulfide; providing a predetermined amount of another material comprising about 15% to 60% by volume of grains of titanium carbide dispersed through a metal matrix; and mixing said polymeric material and said other material to produce a mixture.
Claim 17
Independent Claim
63 words
A method comprising the steps of: providing a predetermined amount of polymeric material selected from the group consisting of polytetrafluoroethylene, polyurethane, nitrile, fluoroelastomer, and polyphenylene sulfide; providing a predetermined amount of another material comprising about 15% to 60% by volume of grains of titanium carbide dispersed through a metal matrix; and mixing said polymeric material and said other material to produce a mixture.
Claim 18
Dependent Claim
22 words
A method as in claim 14, further comprising the steps of molding said mixture to produce a slug, and curing said slug.
Claim 19
Dependent Claim
15 words
A method as in claim 15, further comprising the step of machining said cured slug.
Claim 20
Dependent Claim
42 words
A method as in claim 16, wherein said predetermined amount of said polymeric material comprises about 50% to about 90% by weight of said mixture, and said predetermined amount of said other material comprises more than 10% by weight of said mixture.
Claim 21
Dependent Claim
55 words
A method as in claim 17, further comprising the step of providing a predetermined amount of carbon black, and wherein said step of mixing said polymeric material and said other material to form a mixture comprises the step of mixing said polymeric material and said other material and said carbon black to form a mixture.
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) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |