Patent US3848849A successfully refreshed from Google Patents.
US3848849A
Expired / Lapsed
US
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Fluid control valve
Assignee: Vapor Corp
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Filing: 1973-06-29
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Granted: 1974-11-19
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Expires: 1993-06-29
Abstract
Abstract A valve of the top entry type, having a unique sealing seat structure which includes a rigid base and a resilient sealing face, together with load bearing inserts for limiting the forces between the plug and the seat. The seats are mounted in the valve structure so that line pressure acts to force the seats against the plug in sealing relation therewith.
Inventors
- 👤 W Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:48
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0457; F16K5/0464
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
247 words
In a valve including a valve body defining a valve cavity, axially aligned inlet and outlet ports in the body communicating with said cavity, a plug rotatably mounted in the cavity on an axis perpendicular to the axis of said ports, said plug having a passageway extending transaxially therethrough which when aligned with the ports provides communication therebetween, and seats within the cavity at the ports coacting with the plug and body to define a seal between the plug and ports when the plug is in closed position, the improvement in the seats wherein each seat comprises a generally cylindrical rigid base having a passageway therethrough mating with a port, the axis of the seat extending perpendicular to the pivot axis of the plug and common with the port axis, the end of the seat coacting with the plug being arcuately formed on the same radius as the plug and having bonded thereon a resilient seal member, said seal member including inner and outer continuous spaced seal lips having ribbon-like sealing surfaces engaging the plug, and wear resistant load bearing insert means mounted at the end of the seat engaging the plug, said bearing insert means including a pair of inserts positioned between the inner and outer seal lips at diametrically opposed positions along the seat and aligned along the pivot axis of the plug above and below the plug passageway, each insert having a bearing surface slightly recessed from the sealing surfaces of said seal lips.
Claim 2
Dependent Claim
247 words
In a valve including a valve body defining a valve cavity, axially aligned inlet and outlet ports in the body communicating with said cavity, a plug rotatably mounted in the cavity on an axis perpendicular to the axis of said ports, said plug having a passageway extending transaxially therethrough which when aligned with the ports provides communication therebetween, and seats within the cavity at the ports coacting with the plug and body to define a seal between the plug and ports when the plug is in closed position, the improvement in the seats wherein each seat comprises a generally cylindrical rigid base having a passageway therethrough mating with a port, the axis of the seat extending perpendicular to the pivot axis of the plug and common with the port axis, the end of the seat coacting with the plug being arcuately formed on the same radius as the plug and having bonded thereon a resilient seal member, said seal member including inner and outer continuous spaced seal lips having ribbon-like sealing surfaces engaging the plug, and wear resistant load bearing insert means mounted at the end of the seat engaging the plug, said bearing insert means including a pair of inserts positioned between the inner and outer seal lips at diametrically opposed positions along the seat and aligned along the pivot axis of the plug above and below the plug passageway, each insert having a bearing surface slightly recessed from the sealing surfaces of said seal lips.
Claim 3
Dependent Claim
28 words
The seat as defined in claim 1, wherein the base is metal, the seal member is rubber, and the inserts are of a softer metal than the plug.
Claim 4
Dependent Claim
23 words
The seat as defined in claim 1, wherein each bearing segment is elongated and arcuately formed to the configuration of the seal lips.
Claim 5
Dependent Claim
28 words
The seat as defined in claim 1, wherein said seal lips have sharp edges along the sealing surfaces to wipe the plug during rotation thereof in both directions.
Claim 6
Dependent Claim
38 words
The seat as defined in claim 4, which further includes a thin layer of resilient material interconnecting between said seal lips, and the outer surface of said layer being recessed from the sealing surfaces of the seal lips.
Claim 7
Dependent Claim
20 words
The seat as defined in claim 5, wherein the outer surface of said layer is recessed from the bearing surface.
Claim 8
Dependent Claim
29 words
The seat as defined in claim 5, wherein the cross-sections of the seal lips are thicker at the outer edges and tapered into the center of the seal member.
Claim 9
Dependent Claim
30 words
The seat as defined in claim 7, wherein the rigid base includes a corner beneath the inner lip seal to prevent distortion of the seal during rotation of the plug.
Claim 10
Dependent Claim
226 words
In a valve including a valve body having an inlet port and an outlet port axially aligned therewith, a plug rotatable in the body between the ports along an axis perpendicular to the axis of the ports and having a transaxiallY extending passageway therethrough which when aligned with the inlet and outlet ports provides communication therebetween, and seats within the body at the inlet and outlet ports coacting with the plug to define a seal between the plug and ports, the improvement in the seats each of which comprises a rigid base in the form of an annulus, one end of said base being convexly formed to mate with said plug when a center axis through the seats extends perpendicular to the rotational axis of the plug, an elastomer face bonded to said one end including inner and outer seals interconnected by a thin section, said seals having outer surfaces for sealing engagement with the plug, and a pair of rigid bearing inserts engaging the plug and protecting the seals from excessive distortion and wear, said inserts being positioned between the inner and outer seals and on opposed sides of the seats above and below the plug passageway in alignment with the pivot axis of the plug, each insert having a bearing surface slightly recessed from the outer surfaces of said seals in their relaxed state.
Claim 11
Dependent Claim
226 words
In a valve including a valve body having an inlet port and an outlet port axially aligned therewith, a plug rotatable in the body between the ports along an axis perpendicular to the axis of the ports and having a transaxiallY extending passageway therethrough which when aligned with the inlet and outlet ports provides communication therebetween, and seats within the body at the inlet and outlet ports coacting with the plug to define a seal between the plug and ports, the improvement in the seats each of which comprises a rigid base in the form of an annulus, one end of said base being convexly formed to mate with said plug when a center axis through the seats extends perpendicular to the rotational axis of the plug, an elastomer face bonded to said one end including inner and outer seals interconnected by a thin section, said seals having outer surfaces for sealing engagement with the plug, and a pair of rigid bearing inserts engaging the plug and protecting the seals from excessive distortion and wear, said inserts being positioned between the inner and outer seals and on opposed sides of the seats above and below the plug passageway in alignment with the pivot axis of the plug, each insert having a bearing surface slightly recessed from the outer surfaces of said seals in their relaxed state.
Claim 12
Dependent Claim
199 words
A valve comprising a valve body defining a valve cavity, axially aligned inlet and outlet ports in the body communicating with said cavity, a cylindrical plug rotatably mounted in the cavity on an axis perpendicular to the axis of said ports, said plug having a passageway extending transaxially therethrough which when aligned with the ports provides communication therebetween, seats within the cavity at the ports coacting with the plug and body to define a seal between the plug and ports when the plug is in closed position, each seat including a generally cylindrical rigid base having a passageway therethrough mating with a port, the axis of the seat extending perpendicular to the pivot axis of the plug and common with the port axis, the end of the seat coacting with the plug being arcuately formed on the same radius as the plug and having bonded thereon a resilient seal member, said seal member including inner and outer continuous spaced seal lips having ribbon-like sealing surfaces engaging the plug, said spaced seal lips defining a circumferential space bounded by the seal lips and the plug surface, and passage means on the plug connecting said circumferential space and the valve cavity.
Claim 13
Dependent Claim
199 words
A valve comprising a valve body defining a valve cavity, axially aligned inlet and outlet ports in the body communicating with said cavity, a cylindrical plug rotatably mounted in the cavity on an axis perpendicular to the axis of said ports, said plug having a passageway extending transaxially therethrough which when aligned with the ports provides communication therebetween, seats within the cavity at the ports coacting with the plug and body to define a seal between the plug and ports when the plug is in closed position, each seat including a generally cylindrical rigid base having a passageway therethrough mating with a port, the axis of the seat extending perpendicular to the pivot axis of the plug and common with the port axis, the end of the seat coacting with the plug being arcuately formed on the same radius as the plug and having bonded thereon a resilient seal member, said seal member including inner and outer continuous spaced seal lips having ribbon-like sealing surfaces engaging the plug, said spaced seal lips defining a circumferential space bounded by the seal lips and the plug surface, and passage means on the plug connecting said circumferential space and the valve cavity.
Claim 14
Dependent Claim
43 words
The plug valve defined in claim 10, which further includes sealing means between the seats and valve body, wherein said sealing means define inner and outer annular cavities between said seats and valve body, said cavities being separated by an annular seal member.
Claim 15
Dependent Claim
13 words
The plug valve defined in claim 11, wherein said sealing means includes O-rings.
Claim 16
Dependent Claim
14 words
The valve as defined in claim 11, wherein said sealing means includes ring-shaped members.
Claim 17
Dependent Claim
25 words
The valve defined in claim 11, wherein at least one of said seats includes passage means connecting said inner annular cavity and said circumferential space.
Claim 18
Dependent Claim
19 words
The valve defined in claim 14, containing additional passage means connecting said inner annular cavity and the valve exterior.
Claim 19
Dependent Claim
19 words
The valve defined in claim 15, containing additional passage means connecting said outer annular cavity and the valve exterior.
Claim 20
Dependent Claim
25 words
The valve defined in claim 16, wherein the additional passage means connecting the inner and outer annular cavities and the valve exterior are selectably controlled.
Claim 21
Dependent Claim
40 words
The plug valve defined in claim 11, wherein each seat further includes metal bearing insert means mounted in said one end for engaging the plug and having a bearing surface slightly recessed from the sealing surfaces of said seal lips.
Claim 22
Dependent Claim
22 words
The plug valve defined in claim 13, which further includes spring means between the body and seats biasing same toward the plug.
Claim 23
Dependent Claim
36 words
The plug valve defined in claim 18, wherein the bearing insert means includes a pair of bearing pads, said pads positioned within said seat to be in continuous contact with said plug surface throughout plug rotation.
Claim 24
Dependent Claim
25 words
The plug valve defined in claim 15, wherein the seats are formed such that line pressure forces the seats into sealing contact with the plug.
Claim 25
Dependent Claim
27 words
The valve as defined in claim 20, wherein the bearing pads are positioned such that said inlet and outlet ports do not communicate with said bearing pads.
Claim 26
Dependent Claim
20 words
The plug valve defined in claim 10, wherein said passage means is defined by a depression formed on the plug.
Claim 27
Dependent Claim
40 words
The plug valve defined in claim 10, wherein the passage means is positioned to align with and communicate the valve cavity to the space between the seal lips of one of the seats when the plug is in closed position.
Claim 28
Dependent Claim
45 words
The plug valve defined in claim 10, wherein said passage means is defined by depressions on the plug which align with the seats when the plug is in open position and a depression which aligns with one seat when the plug is in closed position.
Claim 29
Dependent Claim
29 words
The plug valve defined in claim 16, wherein the cross-sections of the seal lips are thicker at the outer edges and tapered into the center of the seal member.
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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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |