US3749359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seat construction
Assignee: Dresser Industries Inc
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Filing: 1971-03-24
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Granted: 1973-07-31
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Expires: 1991-03-24
Abstract
Abstract A butterfly valve in which the vane seat is formed of a corrosion resistant stainless steel ring compressedly interlocked axially onto the valve body.
Inventors
- 👤 Robert P Montesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:35
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263; F16K1/2266
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
160 words
A butterfly valve comprising in combination: a. a body defining a fluid passage between an inlet and outlet; b. a vane member supported in said passage and operable between a first position in which said passage is open to fluid flow and a second position in which said passage is closed to fluid flow; c. a corrosion resistant metal sealing ring extending exposed in said fluid passage fixedly secured to a metal support on one of said vane member or said body in a compressive metal-to-metal axial grip relation therewith, said secured ring having a cross-sectional thickness substantially retained from when unsecured to said support; and d. an annular resilient gasket seal member extending exposed in said fluid passage and secured to the other of to cooperate with said sealing ring vane member or said body, said seal member being adapted to when said vane member is in said second position for effecting shutoff of said passage to fluid flow.
Claim 2
Dependent Claim
160 words
A butterfly valve comprising in combination: a. a body defining a fluid passage between an inlet and outlet; b. a vane member supported in said passage and operable between a first position in which said passage is open to fluid flow and a second position in which said passage is closed to fluid flow; c. a corrosion resistant metal sealing ring extending exposed in said fluid passage fixedly secured to a metal support on one of said vane member or said body in a compressive metal-to-metal axial grip relation therewith, said secured ring having a cross-sectional thickness substantially retained from when unsecured to said support; and d. an annular resilient gasket seal member extending exposed in said fluid passage and secured to the other of to cooperate with said sealing ring vane member or said body, said seal member being adapted to when said vane member is in said second position for effecting shutoff of said passage to fluid flow.
Claim 3
Dependent Claim
32 words
A butterfly valve according to claim 1 in which said sealing ring is fixedly secured to the vane member about its circumference and said gasket seal member is secured to said body.
Claim 4
Dependent Claim
33 words
A butterfly valve according to claim 1 in which said sealing ring is secured to said body and said gasket seal member is fixedly secured to the vane member about the circumference thereof.
Claim 5
Dependent Claim
27 words
A butterfly valve according to claim 3 in which said body includes an integral substantially annular raidally inward extending projection to which said sealing ring is secured.
Claim 6
Dependent Claim
37 words
A butterfly valve according to claim 4 in which said projection includes an axially intermediate annular recess and an annular resilient gasket material is contained in said recess compressed in sealing relation underlying against said sealing ring.
Claim 7
Dependent Claim
35 words
A butterfly valve according to claim 4 in which said body is of cast iron and said sealing ring is of stainless steel fixedly secured to said projection to comprise the seat for said valve.
Claim 8
Dependent Claim
50 words
A butterfly valve according to claim 6 in which at least the surface portion of said seat adapted to cooperate with the gasket seal member on said vane includes an axial offset generally superimposed to the closure path of said vane in moving from said first to said second positions.
Claim 9
Dependent Claim
35 words
A butterfly valve according to claim 7 in which said projection includes an axially intermediate annular recess and an annular resilient gasket material is contained in said recess compressed in sealing relation underlying against seat.
Claim 10
Dependent Claim
18 words
A butterfly valve according to claim 1 in which said secured ring is of substantially uniform cross-sectional thickness.
Claim 11
Dependent Claim
129 words
In a butterfly valve including a metal body defining a fluid passage between an inlet and outlet and a vane member supported in said passage and operable between a first position in which said passage is open to fluid flow and a second position in which said passage is closed to fluid flow, the improvement comprising: an annular metal ring of material different than said body and supported on one of said vane or said body for cooperation with a resilient gasket member on the other of said vane or said body when said vane is in said second position, said ring being fixedly secured to its support in a compressive metal-to-metal axial grip relation therewith and having a cross-sectional thickness substantially retained from when unsecured to its support.
Claim 12
Dependent Claim
129 words
In a butterfly valve including a metal body defining a fluid passage between an inlet and outlet and a vane member supported in said passage and operable between a first position in which said passage is open to fluid flow and a second position in which said passage is closed to fluid flow, the improvement comprising: an annular metal ring of material different than said body and supported on one of said vane or said body for cooperation with a resilient gasket member on the other of said vane or said body when said vane is in said second position, said ring being fixedly secured to its support in a compressive metal-to-metal axial grip relation therewith and having a cross-sectional thickness substantially retained from when unsecured to its support.
Claim 13
Dependent Claim
25 words
In a butterfly valve according to claim 10 in which said ring is fixedly secured to said body to comprise the seat of said valve.
Claim 14
Dependent Claim
41 words
In a butterfly valve according to claim 11 in which said body includes an annular integral seat support projecting radially inward of said passage at a predetermined location relative to said vane member and to which said seat is fixedly secured.
Claim 15
Dependent Claim
30 words
In a butterfly valve according to claim 12 in which said seat is generally double flanged U-shaped in material cross-sectional axially gripping said seat support in compression between said flanges.
Claim 16
Dependent Claim
38 words
In a bufferfly valve according to claim 13 in which said seat support includes an axially intermediate annular recess and an annular resilient gasket material is contained in said recess compressed in sealing relation underlying against said seat.
Claim 17
Dependent Claim
22 words
In a butterfly valve according to claim 14 in which said body is cast iron and said seat is of stainless steel.
Claim 18
Dependent Claim
19 words
In a butterfly valve according to claim 10 in which said secured ring is of substantially uniform cross-section thickness.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |