Patent US622006A successfully refreshed from Google Patents.
Patent US4079747A successfully refreshed from Google Patents.
US4079747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature valve
Assignee: Eaton Corp
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Filing: 1976-12-03
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Granted: 1978-03-21
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Expires: 1996-12-03
Abstract
Abstract A valve for use with high temperature abrasive fluids includes a valve body having an outer shell of metal, such as low carbon steel, a refractory liner attached to the shell comprising an insulating outer layer of relatively low density castable refractory material, such as alumina, an inner layer of relatively high density castable refractory abrasion resistant material attached to an inner surface of the insulating layer, and a flame sprayed ceramic coating applied to an inner surface of the abrasion resistant castable refractory layer defining a flow passage in the valve body for the passage of fluids. The valve body includes a removable core assembly containing the working parts of the valve.
Inventors
- 👤 Richard Albert Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:35
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/14; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K27/00; F16K27/02; F16K27/0209; F16K27/0218; F16L9/02; F16L9/04; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
83 words
A valve for use with high temperature abrasive fluids comprising a valve body having an outer shell of metal, a refractory liner in said shell comprising an insulating outer layer of relatively low density, light weight castable refractory material adjacent said shell, an inner layer of relatively high density castable refractory material inside said insulating layer, and a flame sprayed ceramic coating applied to an inner surface of said inner layer, said coating defining a flow passage in said body for said fluids.
Claim 2
Dependent Claim
83 words
A valve for use with high temperature abrasive fluids comprising a valve body having an outer shell of metal, a refractory liner in said shell comprising an insulating outer layer of relatively low density, light weight castable refractory material adjacent said shell, an inner layer of relatively high density castable refractory material inside said insulating layer, and a flame sprayed ceramic coating applied to an inner surface of said inner layer, said coating defining a flow passage in said body for said fluids.
Claim 3
Dependent Claim
93 words
The valve as set forth in claim 1 wherein said valve body is formed with a recess for removably receiving a valve core assembly, a valve core assembly comprising a valve core of castable refractory material defining a bore aligned with said flow passage when said assembly is seated in said recess, a valve member of castable refractory material mounted on said valve core for movement to open and close said bore, and means supporting said valve member on said core and operable to move said member to open and close said bore.
Claim 4
Dependent Claim
92 words
The valve as set forth in claim 2 wherein said recess in said valve body includes a pair of spaced apart surfaces generally transverse of said flow passages and slightly divergent toward an open end of said recess defined by an opening on one side of said shell, said surfaces having portions thereof formed by said refractory liner inwardly of said shell, said valve core having planar spaced apart opposite side surfaces divergent toward an outer end the core for seating against said portions of said recess surfaces of said valve body.
Claim 5
Dependent Claim
39 words
The valve as set forth in claim 2 wherein said valve member comprises a rotatable butterfly disk formed in one piece of castable refractory material and having a coating of flame sprayed ceramic material applied to the surface thereof.
Claim 6
Dependent Claim
40 words
The valve as set forth in claim 4 wherein said supporting means includes a pair of axially aligned shafts on opposite edges of said disk formed of alumina ceramic material and embedded in the castable refractory material of said disk.
Claim 7
Dependent Claim
44 words
The valve as set forth in claim 5 wherein said valve core is formed with a pair of axially aligned hollow sleeve bearings on opposite sides of said bore for receiving said shafts on said butterfly disk, said bearings formed of alumina ceramic material.
Claim 8
Dependent Claim
56 words
The valve as set forth in claim 6 wherein said valve core is formed by a pair of core members, each core member having a portion of its surface defining a portion of said bore and keyed to interfit with the other core member, and one of said bearings mounted in each of said core members.
Claim 9
Dependent Claim
59 words
The valve of claim 2 wherein said valve core comprises a pair of core members keyed to interfit and each core member having a surface portion defining a portion of said bore, and metal lift means in contact with outer edge portions of said core members for removing said valve core assembly from said recess in said valve body.
Claim 10
Dependent Claim
59 words
A valve housing closure for contact with high temperature fluids and the like comprising a body formed of castable refractory material, an outer layer of flame sprayed ceramic material on said body and one or more stress receiving body supporting members, said body being cast around said members with at least a portion of said members within the body.
Claim 11
Dependent Claim
59 words
A valve housing closure for contact with high temperature fluids and the like comprising a body formed of castable refractory material, an outer layer of flame sprayed ceramic material on said body and one or more stress receiving body supporting members, said body being cast around said members with at least a portion of said members within the body.
Claim 12
Dependent Claim
22 words
The valve housing closure of claim 9 wherein at least one of said body supporting members is formed of a ceramic material.
Claim 13
Dependent Claim
21 words
The valve housing closure of claim 10 wherein said body supporting member is formed of a high purity alumina ceramic material.
Claim 14
Dependent Claim
29 words
The valve housing closure of claim 9 wherein at least one of said body supporting members comprises an axle pin having an outer portion extending outwardly of said body.
Claim 15
Dependent Claim
37 words
The valve housing closure of claim 12 wherein said portion cast in place in said body is formed with alternate lands and grooves, said castable refractory filling said grooves of said body supporting members in said grooves.
Claim 16
Dependent Claim
25 words
The valve housing closure of claim 9 wherein said body comprises a high purity castable refractory having 94-97% by weight Al 2 O 3 .
Claim 17
Dependent Claim
98 words
A valve-type housing for the conveyance of abrasive fluids comprising an outer shell of metal and a plurality of layers of refractory material covering an inner surface of said metal, said refractory layers comprising a layer of abrasion resistant castable refractory material having indentations in an inner surface thereof, and a layer of ceramic material flame sprayed over the inner surface of the abrasion resistant refractory material to at least partially fill said indentations and to smooth said abrasion resistant refractory inner surface thereby providing an abrasion resistant inner surface of said valve housing for smooth sealing surfaces.
Claim 18
Dependent Claim
98 words
A valve-type housing for the conveyance of abrasive fluids comprising an outer shell of metal and a plurality of layers of refractory material covering an inner surface of said metal, said refractory layers comprising a layer of abrasion resistant castable refractory material having indentations in an inner surface thereof, and a layer of ceramic material flame sprayed over the inner surface of the abrasion resistant refractory material to at least partially fill said indentations and to smooth said abrasion resistant refractory inner surface thereby providing an abrasion resistant inner surface of said valve housing for smooth sealing surfaces.
Claim 19
Dependent Claim
44 words
A valve type housing as defined in claim 15 further including a layer of insulating castable refractory material secured to the inner surface of said metal shell, said insulating castable refractory material covered on its inner surface by said abrasion resistant castable refractory material.
Claim 20
Dependent Claim
23 words
A valve-type housing as defined in claim 16 wherein said layer of insulating castable refractory material contains about 94-97% by weight refractory oxide.
Claim 21
Dependent Claim
91 words
An abrasion resistant valve-type housing having smooth sealing surfaces for adjusting the flow of high temperature abrasive fluids comprising an outer shell of metal, an outer liner of insulating refractory material secured to an inside surface of said metal shell, a central liner of castable refractory material cast in place over an inside surface of said outer liner, and a flame sprayed inner liner of ceramic material on an inside surface of said central liner to provide a smooth inner surface of said valve housing for mating with movable valve parts.
Claim 22
Dependent Claim
91 words
An abrasion resistant valve-type housing having smooth sealing surfaces for adjusting the flow of high temperature abrasive fluids comprising an outer shell of metal, an outer liner of insulating refractory material secured to an inside surface of said metal shell, a central liner of castable refractory material cast in place over an inside surface of said outer liner, and a flame sprayed inner liner of ceramic material on an inside surface of said central liner to provide a smooth inner surface of said valve housing for mating with movable valve parts.
Claim 23
Dependent Claim
38 words
An abrasion resistant valve-type housing as defined in claim 18 including anchor means secured to said inside surface of said metal shell and projecting into said outer liner for securing said central liner in place in said shell.
Claim 24
Dependent Claim
26 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said outer liner is cast in place on said inside surface of said metal shell.
Claim 25
Dependent Claim
27 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said anchor means comprises a plurality of anchors secured to said shell at spaced apart locations.
Claim 26
Dependent Claim
20 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said anchors are secured to said shell by welding.
Claim 27
Dependent Claim
28 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said anchors include a pair of divergent legs extending away from said inside surface of said shell.
Claim 28
Dependent Claim
28 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said anchors comprise V-shaped elements having an apex thereof welded to said inside surface of said shell.
Claim 29
Dependent Claim
20 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said outer liner comprises 94-97% weight refractory oxide material.
Claim 30
Dependent Claim
25 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said outer liner comprises at least 85% by weight relatively coarse grained refractory oxide.
Claim 31
Dependent Claim
32 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said outer liner comprises a mixture of alumina and silica in a weight ratio in the range of 2:3 to 3:2.
Claim 32
Dependent Claim
35 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said central liner of castable refractory materials has a lower density and a lower thermal conductivity than said outer liner of castable refractory material.
Claim 33
Dependent Claim
29 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said central liner of castable refractory material has a thermal conductivity less than 10 B.T.U./sq. f./hr./° F./in. thickness.
Claim 34
Dependent Claim
37 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said central liner of castable refractory material comprises at least 85% by weight refractory oxide material and has a density of at least 100 pounds/cu. ft.
Claim 35
Dependent Claim
30 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said outer liner of castable refractory material has a thermal conductivity less than about 5.0 B.T.U./sq. ft./° F./hr./in. thickness.
Claim 36
Dependent Claim
22 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said outer liner of castable refractory material comprises 94-97% refractory oxide.
Claim 37
Dependent Claim
40 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said flame sprayed ceramic inner liner contains refractory oxide particles of finer average grain size than refractory oxide particles of either said central liner or of said outer liner.
Claim 38
Dependent Claim
23 words
An abrasion resistant valve-type housing as defined in claim 18 wherein said flame sprayed ceramic inner liner comprises at least 90% refractory oxide.
Claim 39
Dependent Claim
20 words
An abrasion resistant valve-type housing as defined in claim 34 wherein said inner liner comprises at least 96% refractory oxide.
Claim 40
Dependent Claim
20 words
An abrasion resistant valve-type housing as defined in claim 35 wherein said inner liner comprises at least 99% refractory oxide.
Claim 41
Dependent Claim
18 words
An abrasion resistant valve-type housing as defined in claim 35 wherein said refractory oxide comprises 99.9% refractory oxide.
Claim 42
Dependent Claim
20 words
An abrasion resistant valve-type housing as defined in claim 37 wherein said refractory oxide comprises Al 2 O 3 .
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) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |