US4006883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable seat for butterfly valves
Assignee: Individual
•
Filing: 1973-01-08
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Granted: 1977-02-08
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Expires: 1993-01-08
Abstract
Abstract An adjustable seat for butterfly valves wherein an annular groove is provided in the valve body for receiving an annular sealing member against one sidewall thereof for sealingly engaging the valve closure member in the closed position of the valve. A plurality of circumferentially spaced inwardly directed lugs are provided on the valve body conterminous with the groove and spaced from the sidewall thereof. A plurality of arcuate seal retainer members are disposed in the groove and interposed between the lugs and the sealing member for retaining the sealing member in a sealing position within the groove. Adjustment members are provided on each lug for selective adjustment of the pressure of the arcuate segments against the sealing member for adjusting the sealing pressure of the sealing member.
Inventors
- 👤 George W. Hilsheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:03
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
327 words
A valve seat for a butterfly valve having a valve body and a valve disc rotatable to alternate open and closed positions, comprising a first annular groove provided in the valve body in substantial alignment with the closed position of the valve disc, a resilient valve seat disposed within said annular groove and having the outer periphery thereof in sealing engagement with the groove and the inner periphery thereof in in sealing engagement with the outer periphery of the valve disc in the closed position thereof, said valve seat being provided with oppositely disposed annular recesses, one sidewall of said annular groove being provided with recess means complementary to the recess means of the valve seat disposed adjacent thereto, a second annular groove provided in the valve body and in open communication with the first annular groove, inwardly directed flange means provided on the body conterminous with the second annular groove and spaced from the first annular groove, a plurality of arcuate retaining segments disposed in end to end relation within said second annular groove between the flange means and valve seat means, said arcuate retaining segments being provided with longitudinally extending ridge means along one side thereof of a configuration complementary to the recess of the valve seat disposed thereagainst, a longitudinally extending curved sidewall provided on each retaining segment conterminous with the ridge and engagable with the second annular groove whereby said retaining segments are pivotally disposed therein, projection means provided on each retaining segment oppositely disposed with respect to the curved sidewall, and adjusting means provided on said lug means and engagable with the projection means for selectively rocking the retaining segments in a direction toward the valve seat, said ridge of each retaining segment cooperating with the recess of the sidewall of the first annular groove for selectively adjusting the sealing pressure of the valve seat against the outer periphery of the valve disc upon rocking of the segments by said adjusting means.
Claim 2
Dependent Claim
327 words
A valve seat for a butterfly valve having a valve body and a valve disc rotatable to alternate open and closed positions, comprising a first annular groove provided in the valve body in substantial alignment with the closed position of the valve disc, a resilient valve seat disposed within said annular groove and having the outer periphery thereof in sealing engagement with the groove and the inner periphery thereof in in sealing engagement with the outer periphery of the valve disc in the closed position thereof, said valve seat being provided with oppositely disposed annular recesses, one sidewall of said annular groove being provided with recess means complementary to the recess means of the valve seat disposed adjacent thereto, a second annular groove provided in the valve body and in open communication with the first annular groove, inwardly directed flange means provided on the body conterminous with the second annular groove and spaced from the first annular groove, a plurality of arcuate retaining segments disposed in end to end relation within said second annular groove between the flange means and valve seat means, said arcuate retaining segments being provided with longitudinally extending ridge means along one side thereof of a configuration complementary to the recess of the valve seat disposed thereagainst, a longitudinally extending curved sidewall provided on each retaining segment conterminous with the ridge and engagable with the second annular groove whereby said retaining segments are pivotally disposed therein, projection means provided on each retaining segment oppositely disposed with respect to the curved sidewall, and adjusting means provided on said lug means and engagable with the projection means for selectively rocking the retaining segments in a direction toward the valve seat, said ridge of each retaining segment cooperating with the recess of the sidewall of the first annular groove for selectively adjusting the sealing pressure of the valve seat against the outer periphery of the valve disc upon rocking of the segments by said adjusting means.
Claim 3
Dependent Claim
36 words
A valve seat as set forth in claim 1 wherein the inwardly directed flange means comprises a plurality of circumferentially spaced lug members, at least one of said lug members being provided for each retaining segment.
Claim 4
Dependent Claim
46 words
A valve seat as set forth in claim 2 wherein each lug member is provided with a longitudinally extending recess for receiving one side edge of the respective retaining segment therein for facilitating the rocking of the segment during adjustment thereof against the valve seat member.
Claim 5
Dependent Claim
193 words
A valve seat for a butterfly valve having a valve body and a valve disc rotatable to alternate open and closed positions, comprising a first annular groove provided in the valve body, a resilient annular valve seat disposed within said first groove and having the inner periphery thereof in engagement with the outer periphery of the valve disc in the closed position thereof, a second annular groove provided in the valve body conterminous with the first groove and in open communication therewith, radially inwardly directed flange means provided on the body conterminous with the second groove and spaced from the first groove, a plurality of arcuate retaining segments loosely disposed in the second groove between the valve seat and the flange means, said retaining segments being rockable in said second groove in directions away from and toward the valve seat for selective pressure engagement from the valve seat, and adjustment means carried by the flange means for selectively rocking said segments to provide said pressure engagement with the valve seat, said flange means being provided with recess means conterminous with the second annular groove for receiving a portion of the arcuate segments therein.
Claim 6
Dependent Claim
193 words
A valve seat for a butterfly valve having a valve body and a valve disc rotatable to alternate open and closed positions, comprising a first annular groove provided in the valve body, a resilient annular valve seat disposed within said first groove and having the inner periphery thereof in engagement with the outer periphery of the valve disc in the closed position thereof, a second annular groove provided in the valve body conterminous with the first groove and in open communication therewith, radially inwardly directed flange means provided on the body conterminous with the second groove and spaced from the first groove, a plurality of arcuate retaining segments loosely disposed in the second groove between the valve seat and the flange means, said retaining segments being rockable in said second groove in directions away from and toward the valve seat for selective pressure engagement from the valve seat, and adjustment means carried by the flange means for selectively rocking said segments to provide said pressure engagement with the valve seat, said flange means being provided with recess means conterminous with the second annular groove for receiving a portion of the arcuate segments therein.
Claim 7
Dependent Claim
244 words
A valve seat for a butterfly valve having a valve body and a valve disc rotatable to alternate open and closed positions, comprising a first annular groove provided in the valve body, a resilient annular valve seat disposed within said first groove and having the inner periphery thereof in engagement with the outer periphery of the valve disc in the closed position thereof, a second annular groove provided in the valve body conterminous with the first groove and in open communication therewith, radially inwardly directed flange means provided on the body conterminous with the second groove and spaced from the first groove, a plurality of arcuate retaining segments loosely disposed in the second groove between the valve seat and the flange means, said retaining segments being rockable in said second groove in directions away from and toward the valve seat for selective pressure engagement with the valve seat, and adjustment means carried by the flange means for selectively rocking said segments to provide said pressure engagement with the valve seat; each arcuate segment being provided with a longitudinally extending ridge engagable with the valve seat for facilitating retaining of the valve seat in the first annular groove for applying sealing pressure to the valve seat, an arcuate sidewall engagable with the second annular groove for providing said rockable engagement therewith, and projections means oppositely disposed with respect to the arcuate sidewall for engagement by the adjustment means to provide said rocking of said segments.
Claim 8
Dependent Claim
244 words
A valve seat for a butterfly valve having a valve body and a valve disc rotatable to alternate open and closed positions, comprising a first annular groove provided in the valve body, a resilient annular valve seat disposed within said first groove and having the inner periphery thereof in engagement with the outer periphery of the valve disc in the closed position thereof, a second annular groove provided in the valve body conterminous with the first groove and in open communication therewith, radially inwardly directed flange means provided on the body conterminous with the second groove and spaced from the first groove, a plurality of arcuate retaining segments loosely disposed in the second groove between the valve seat and the flange means, said retaining segments being rockable in said second groove in directions away from and toward the valve seat for selective pressure engagement with the valve seat, and adjustment means carried by the flange means for selectively rocking said segments to provide said pressure engagement with the valve seat; each arcuate segment being provided with a longitudinally extending ridge engagable with the valve seat for facilitating retaining of the valve seat in the first annular groove for applying sealing pressure to the valve seat, an arcuate sidewall engagable with the second annular groove for providing said rockable engagement therewith, and projections means oppositely disposed with respect to the arcuate sidewall for engagement by the adjustment means to provide said rocking of said segments.
Claim 9
Dependent Claim
210 words
A valve seat for a butterfly valve having a valve body and a valve disc rotatable to alternate open and closed positions, comprising a first annular groove provided in the valve body, a resilient annular valve seat disposed within said first groove and having the inner periphery thereof in engagement with the outer periphery of the valve disc in the closed position thereof, a second annular groove provided in the valve body conterminous with the first groove and in open communication therewith, radially inwardly directed flange means provided on the body conterminous with the second groove and spaced from the first groove, a plurality of arcuate retaining segments loosely disposed in the second groove between the valve seat and the flange means, said retaining segments being rockable in said second groove in directions away from and toward the valve seat for selective pressure engagement with the valve seat, and adjustment means carried by the flange means for selectively rocking said segments to provide said pressure engagement with the valve seat, said flange means being provided with recess means conterminous with the second annular groove, and each arcuate segment being provided with a longitudinally extending rounded edge means engagable with said flange recess means for facilitating the rocking of said segments.
Claim 10
Dependent Claim
210 words
A valve seat for a butterfly valve having a valve body and a valve disc rotatable to alternate open and closed positions, comprising a first annular groove provided in the valve body, a resilient annular valve seat disposed within said first groove and having the inner periphery thereof in engagement with the outer periphery of the valve disc in the closed position thereof, a second annular groove provided in the valve body conterminous with the first groove and in open communication therewith, radially inwardly directed flange means provided on the body conterminous with the second groove and spaced from the first groove, a plurality of arcuate retaining segments loosely disposed in the second groove between the valve seat and the flange means, said retaining segments being rockable in said second groove in directions away from and toward the valve seat for selective pressure engagement with the valve seat, and adjustment means carried by the flange means for selectively rocking said segments to provide said pressure engagement with the valve seat, said flange means being provided with recess means conterminous with the second annular groove, and each arcuate segment being provided with a longitudinally extending rounded edge means engagable with said flange recess means for facilitating the rocking of said segments.
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) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |