Patent US2003604A successfully refreshed from Google Patents.
Patent US6370538B1 successfully refreshed from Google Patents.
US4196886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control valve
Assignee: Industrial Electronic Rubber Co
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Filing: 1975-07-21
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Granted: 1980-04-08
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Expires: 1995-07-21
Abstract
Abstract The present invention provides an improvement in fluid flow control valves which utilize polymeric rubbery materials either as the valve member or the valve seat in the flow control valve. The improvements are obtained by utilizing as the rubbery material for either the valve seat or the valve, a semi-rigid to rigid rubbery material prepared by curing a nitrile rubber with from three to 15 parts of sulfur per 100 parts of rubber. Such cured rubbers when utilized in said application, have been found to overcome the problems exhibited by the rubbery materials heretofore used for such applications.
Inventors
- 👤 Myles N. Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:50
CPC Classifications
F; F02; F02M; F02M5/00; F02M5/12; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F16K1/38
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
In a fluid flow regulating valve means comprising port means including a valve seat and port restricting means including a valve member, said valve seat and valve member being relatively movable for effecting engagement and disengagement thereof, the improvement comprising said valve member having a conical tip adapted to control the flow of fuel through said port restricting means, said conical tip including a surface of a semi-rigid to rigid rubber material prepared by curing a nitrile rubber with from about six to 15 parts sulfur per 100 parts of rubber, wherein the nitrile rubber is a butadiene-acrylonitrile copolymer containing about 18 to about 50% acrylonitrile.
Claim 2
Dependent Claim
106 words
In a fluid flow regulating valve means comprising port means including a valve seat and port restricting means including a valve member, said valve seat and valve member being relatively movable for effecting engagement and disengagement thereof, the improvement comprising said valve member having a conical tip adapted to control the flow of fuel through said port restricting means, said conical tip including a surface of a semi-rigid to rigid rubber material prepared by curing a nitrile rubber with from about six to 15 parts sulfur per 100 parts of rubber, wherein the nitrile rubber is a butadiene-acrylonitrile copolymer containing about 18 to about 50% acrylonitrile.
Claim 3
Dependent Claim
88 words
In a fluid flow regulating valve means comprising port means including a valve seat and port restricting means including a valve member, said valve seat and valve member being relatively movable for effecting engagement and disengagement thereof, the improvement comprising said valve seat comprising a semi-rigid to rigid rubber material prepared by curing a nitrile rubber with from about six to 15 parts of sulfur per 100 parts of the rubber, wherein the nitrile rubber is a butadiene-acrylonitrile copolymer comprising from about 18% to about 50% of acrylonitrile.
Claim 4
Dependent Claim
88 words
In a fluid flow regulating valve means comprising port means including a valve seat and port restricting means including a valve member, said valve seat and valve member being relatively movable for effecting engagement and disengagement thereof, the improvement comprising said valve seat comprising a semi-rigid to rigid rubber material prepared by curing a nitrile rubber with from about six to 15 parts of sulfur per 100 parts of the rubber, wherein the nitrile rubber is a butadiene-acrylonitrile copolymer comprising from about 18% to about 50% of acrylonitrile.
Claim 5
Dependent Claim
82 words
A rubber tip valve element comprising an elongated metal body and a composite tip secured at one end of said metal body said tip including a metal head and body extension and a semi-rigid to rigid rubber material molded about the head, said rubber material comprising a rubber prepared by curing a nitrile rubber with about ten parts of sulfur per 100 parts of the rubber, wherein the nitrile rubber is a butadiene-acrylonitrile copolymer comprising from about 18 to 50% of acrylonitrile.
Claim 6
Dependent Claim
82 words
A rubber tip valve element comprising an elongated metal body and a composite tip secured at one end of said metal body said tip including a metal head and body extension and a semi-rigid to rigid rubber material molded about the head, said rubber material comprising a rubber prepared by curing a nitrile rubber with about ten parts of sulfur per 100 parts of the rubber, wherein the nitrile rubber is a butadiene-acrylonitrile copolymer comprising from about 18 to 50% of acrylonitrile.
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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) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |