Patent US3620243A successfully refreshed from Google Patents.
US3620243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed ball valve
Assignee: Ethyl Corp
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Filing: 1969-09-03
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Granted: 1971-11-16
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Expires: 1989-09-03
Abstract
Abstract A ball valve comprising a seal ring having a groove in the face thereof and a liquid sealant in said groove.
Inventors
- 👤 Edward J Zatopek
- 👤 James L Bitting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:52
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/205; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4442
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
190 words
A ball valve comprising: a valve body; a valve chamber in said body having inlet and outlet openings; a ball mounted in said chamber having a cylindrical internal passage with ports at each end; a pair of sealing rings mounted on opposite sides of said ball; a seat for said rings in said valve body; a passageway in said valve body connecting each of said seats with an external sealing fluid supply source; each of said rings having a circumferential groove therein adjacent the ring seat and in fluid communication with one of said passageways; each of said rings having a second circumferential groove therein in communication with the said ball and having a pair of lips formed by said groove which engage said ball around and spaced from one of said ports; each of said seal rings having at least one passageway fluidly connecting said grooves; and a sealing fluid substantially filling said grooves, said pair of lips being so constructed and arranged that when external pressure is exerted against the sealing fluid, the sealing fluid forces at least one of said lips in sealing contact with said ball.
Claim 2
Dependent Claim
190 words
A ball valve comprising: a valve body; a valve chamber in said body having inlet and outlet openings; a ball mounted in said chamber having a cylindrical internal passage with ports at each end; a pair of sealing rings mounted on opposite sides of said ball; a seat for said rings in said valve body; a passageway in said valve body connecting each of said seats with an external sealing fluid supply source; each of said rings having a circumferential groove therein adjacent the ring seat and in fluid communication with one of said passageways; each of said rings having a second circumferential groove therein in communication with the said ball and having a pair of lips formed by said groove which engage said ball around and spaced from one of said ports; each of said seal rings having at least one passageway fluidly connecting said grooves; and a sealing fluid substantially filling said grooves, said pair of lips being so constructed and arranged that when external pressure is exerted against the sealing fluid, the sealing fluid forces at least one of said lips in sealing contact with said ball.
Claim 3
Dependent Claim
16 words
The ball valve of claim 1, wherein said valve body includes a sealing fluid supply means.
Claim 4
Dependent Claim
35 words
The ball valve of claim 2, wherein said sealing fluid supply means includes an equalizer means for moving sealing fluid from the area of one seat ring to the area of the other seat ring.
Claim 5
Dependent Claim
189 words
A ball valve comprising: a valve body; a valve chamber in said body having inlet and outlet openings; a ball mounted in said chamber having a cylindrical internal passage with ports at each end; a pair of sealing rings mounted on opposite sides of said ball; a seat for said rings in said valve body, said valve seat having a circumferential groove therein for receiving a sealing fluid; a passageway in said valve body connecting each of said grooves with an external sealing fluid supply source; each of said rings having a circumferential groove therein in communication with said ball and having a pair of lips formed by said groove which engage said ball around and spaced from one of said ports; each of said seal rings having at least one passageway fluidly connecting said groove in said ring with said groove in said ring seat; and a sealing fluid substantially filling said grooves, said pair of lips being so constructed and arranged that when external pressure is exerted against the sealing fluid, the sealing fluid forces at least one of said lips in sealing contact with said ball.
Claim 6
Dependent Claim
189 words
A ball valve comprising: a valve body; a valve chamber in said body having inlet and outlet openings; a ball mounted in said chamber having a cylindrical internal passage with ports at each end; a pair of sealing rings mounted on opposite sides of said ball; a seat for said rings in said valve body, said valve seat having a circumferential groove therein for receiving a sealing fluid; a passageway in said valve body connecting each of said grooves with an external sealing fluid supply source; each of said rings having a circumferential groove therein in communication with said ball and having a pair of lips formed by said groove which engage said ball around and spaced from one of said ports; each of said seal rings having at least one passageway fluidly connecting said groove in said ring with said groove in said ring seat; and a sealing fluid substantially filling said grooves, said pair of lips being so constructed and arranged that when external pressure is exerted against the sealing fluid, the sealing fluid forces at least one of said lips in sealing contact with said ball.
Claim 7
Dependent Claim
16 words
The ball valve of claim 4, wherein said valve body includes a sealing fluid supply means.
Claim 8
Dependent Claim
35 words
The ball valve of claim 4, wherein said sealing fluid supply means includes an equalizer means for moving sealing fluid from the area of one seat ring to the area of the other seat ring.
References Cited (Backward Citations)
US2006715A
Cited
US2684262A
Cited
US2747600A
Cited
US2754136A
Cited
US3100499A
Cited
US3306315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |