US3879044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced elastomeric o-ring with improved compression set
Assignee: EIDP Inc
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Filing: 1973-06-13
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Granted: 1975-04-22
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Expires: 1993-06-13
Abstract
Abstract A composition comprising a fluoroelastomer o-ring containing fibers which serve as a filler, said fibers having an L/D ratio of at least 15 and being oriented so that at least 25% of the fibers are at an angle of 30* or less from radii through the center and in the plane of the o-ring. Thus the fibers are primarily radially oriented. The o-ring has improved compression set.
Inventors
- 👤 Gerald Martin Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:00
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/021; F16J15/022; F16J15/024; F16J15/027; Y; Y10; Y10S; Y10S277/00; Y10S277/915; Y10S277/935; Y10S277/944; Y10S277/945; Y10S285/00; Y10S285/917
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
54 words
AN ARTICLE OF MANUFACTURE COMPRISING A FLUOROELASTOMER SEALANT CONTAINING THEREIN NON-WOVEN RADIALLY ORIENTED FIBERS, AT LEAST ABOUT 25% OF SAID FIBERS FORMING AN ANGLE OF NO MORE THAN ABOUT 30* FROM RADDI DRAWN THROUGH THE CENTER AND IN THE PLANE OF SAID SEALANT SAID FIBERS HAVING AN L/D RATIO OF AT LEAST ABOUT 15.
Claim 2
Dependent Claim
54 words
AN ARTICLE OF MANUFACTURE COMPRISING A FLUOROELASTOMER SEALANT CONTAINING THEREIN NON-WOVEN RADIALLY ORIENTED FIBERS, AT LEAST ABOUT 25% OF SAID FIBERS FORMING AN ANGLE OF NO MORE THAN ABOUT 30* FROM RADDI DRAWN THROUGH THE CENTER AND IN THE PLANE OF SAID SEALANT SAID FIBERS HAVING AN L/D RATIO OF AT LEAST ABOUT 15.
Claim 3
Dependent Claim
54 words
An article of manufacture comprising a fluoroelastomer sealant containing therein non-woven radially oriented fibers, at least about 25% of said fibers forming an angle of no more than about 30* from radii drawn through the center and in the plane of said sealant said fibers having an L/D ratio of at least about 15.
Claim 4
Dependent Claim
54 words
An article of manufacture comprising a fluoroelastomer sealant containing therein non-woven radially oriented fibers, at least about 25% of said fibers forming an angle of no more than about 30* from radii drawn through the center and in the plane of said sealant said fibers having an L/D ratio of at least about 15.
Claim 5
Dependent Claim
27 words
The article of manufacture of claim 1 wherein said article is an sealant comprising a copolymer of vinylidene fluoride and at least one fluorinated ethylenically unsaturated comonomer.
Claim 6
Dependent Claim
37 words
The article of manufacture of claim 1 wherein at least about 40% of the fibers form an angle of no more than about 30* with radii drawn through the center and in the plane of the sealant.
Claim 7
Dependent Claim
19 words
The article of manufacture of claim 1 in which the copolymer is a polymer of vinylidene fluoride and hexafluoropropylene.
Claim 8
Dependent Claim
24 words
The article of manufacture of claim 1 in which the fibers are present in the amount of 5-50 parts per hundred parts of rubber.
Claim 9
Dependent Claim
24 words
The article of manufacture of claim 1 in which the fiber is selected from the group consisting of fibrous potassium titanate and acicular rutile.
References Cited (Backward Citations)
US1178741A
Cited
US2370913A
Cited
US3049385A
Cited
US2974183A
Cited
US3552755A
Cited
US3580590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |