US3838844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Top entry valve with aligned through passage
Assignee: CONTROMATICS CORP
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Filing: 1973-04-13
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Granted: 1974-10-01
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Expires: 1993-04-13
Abstract
Abstract Ball valves for controlling fluid flow known to the prior art have utilized biasing means to positively urge seals against the ball. The construction of some of such valves has resulted in an offset between the flow passage provided through the ball and the ports provided for connections. The invention provides annular wedge-shaped members biased transversely to the flow path to urge annular seals against the ball. The housing of the valve is provided with an opening on the uppermost portion of the housing whereby the seals may be removed from the interior of the housing together with the seal and associated seat assemblies.
Inventors
- 👤 F Arn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:07
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/201; F16K5/202
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
341 words
A top entry ball valve comprising a valve body including a valve chamber open at the top thereof and having opposing side walls and a pair of axially aligned flow passages having a predetermined size communicating with said opposite side walls of said valve chamber, a spherical valve ball, including a flow passage having said predetermined size extending therethrough seLectively located within said valve chamber, bonnet means for closing the top opening of said valve chamber and including means for displacing said valve ball from a first position whereat said ball valve passage extends substantially perpendicular to said valve body flow passages to a second position whereat said valve ball flow passage and said valve body flow passages are substantially coaxial, and means for sealing said valve ball within said valve chamber including a first annular member having a first surface including annular sealing means for engaging one side of said valve ball and a second surface opposing one of said valve chamber side walls, a second wedge-shaped annular member, intermediate said one valve chamber side wall and said first annular member, having a first surface including annular sealing means for engaging the second surface of said first annular member and a second surface including annular sealing means for engaging said one end wall of said valve chamber, first spring means for wedging said first annular member towards said one side of said valve ball, a third annular member having a first surface including annular sealing means for engaging the other side of said valve ball and a second surface opposing the other one of said valve chamber side walls, a fourth wedge-shaped annular member intermediate said other valve chamber side wall and said third annular member having a first surface including annular sealing means for engaging the second surface of said third annular member and a second surface including annular sealing means for engaging said other end wall of said valve chamber, and second spring means for wedging said first annular member towards said other side of said valve ball.
Claim 2
Dependent Claim
341 words
A top entry ball valve comprising a valve body including a valve chamber open at the top thereof and having opposing side walls and a pair of axially aligned flow passages having a predetermined size communicating with said opposite side walls of said valve chamber, a spherical valve ball, including a flow passage having said predetermined size extending therethrough seLectively located within said valve chamber, bonnet means for closing the top opening of said valve chamber and including means for displacing said valve ball from a first position whereat said ball valve passage extends substantially perpendicular to said valve body flow passages to a second position whereat said valve ball flow passage and said valve body flow passages are substantially coaxial, and means for sealing said valve ball within said valve chamber including a first annular member having a first surface including annular sealing means for engaging one side of said valve ball and a second surface opposing one of said valve chamber side walls, a second wedge-shaped annular member, intermediate said one valve chamber side wall and said first annular member, having a first surface including annular sealing means for engaging the second surface of said first annular member and a second surface including annular sealing means for engaging said one end wall of said valve chamber, first spring means for wedging said first annular member towards said one side of said valve ball, a third annular member having a first surface including annular sealing means for engaging the other side of said valve ball and a second surface opposing the other one of said valve chamber side walls, a fourth wedge-shaped annular member intermediate said other valve chamber side wall and said third annular member having a first surface including annular sealing means for engaging the second surface of said third annular member and a second surface including annular sealing means for engaging said other end wall of said valve chamber, and second spring means for wedging said first annular member towards said other side of said valve ball.
Claim 3
Dependent Claim
18 words
A top entry ball valve according to claim 1, wherein said valve chamber side walls are substantially parallel.
Claim 4
Dependent Claim
39 words
A top entry ball valve according to claim 2, wherein said second surface of each of said first and third annular members and said first surface of each of said second and fourth wedge-shaped annular members are selectively inclined.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |