US4132239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid valve for microwave devices
Assignee: Raytheon Co
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Filing: 1977-07-05
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Granted: 1979-01-02
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Expires: 1997-07-05
Abstract
Abstract A fluid valve for utilization in a beverage-making appliance such as a coffee maker subject to microwave energy comprising a valve housing containing the operative parts of the valve, and a metal casing enclosing at least a portion of the housing and having spaced encircling radiation shields between which the adjacent portions of the appliance are disposed, the shields forming a choke to prevent penetration of microwave energy such as could cause arcing and consequent damage to the appliance and to the valve itself.
Inventors
- 👤 Robert F. Bowen
- 👤 Wesley W. Teich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:33
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54; A47J31/547; A47J31/46; A47J31/461; G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/08; H; H05; H05B; H05B6/00; H05B6/64; H05B6/76; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T137/7062
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
68 words
A valve assembly comprising a housing having a passage extending therethrough, thermally actuated means within the housing for opening and closing the passage to flow of a fluid therethrough, the housing having an outer circumferential portion designed to fit within an opening in a wall, and microwave field control means carried by said outer circumferential portion for preventing concentration of electrical fields in the area around said opening.
Claim 2
Dependent Claim
68 words
A valve assembly comprising a housing having a passage extending therethrough, thermally actuated means within the housing for opening and closing the passage to flow of a fluid therethrough, the housing having an outer circumferential portion designed to fit within an opening in a wall, and microwave field control means carried by said outer circumferential portion for preventing concentration of electrical fields in the area around said opening.
Claim 3
Dependent Claim
30 words
A valve assembly as set forth in claim 1 wherein said field control means are ringlike metal elements without sharp edges spaced for disposition on opposite sides of said wall.
Claim 4
Dependent Claim
85 words
A valve assembly for mounting in a wall of a fluid container comprising a housing having a passage extending therethrough, thermally actuated means within the housing for opening and closing the passage to the flow of fluid therethrough, the housing having an outer circumferential portion designed to fit within an opening in said wall, and microwave field control means carried by said housing and spaced for disposal on opposite sides of said wall for preventing concentration of electrical fields in the area of said opening.
Claim 5
Dependent Claim
85 words
A valve assembly for mounting in a wall of a fluid container comprising a housing having a passage extending therethrough, thermally actuated means within the housing for opening and closing the passage to the flow of fluid therethrough, the housing having an outer circumferential portion designed to fit within an opening in said wall, and microwave field control means carried by said housing and spaced for disposal on opposite sides of said wall for preventing concentration of electrical fields in the area of said opening.
Claim 6
Dependent Claim
33 words
A valve assembly as set forth in claim 3 wherein said means are a pair of ringlike metal elements spaced on opposite sides of the marginal area of said wall around the aperture.
Claim 7
Dependent Claim
107 words
A valve assembly for mounting in a wall of a fluid container transparent to microwaves, comprising a housing having a passage extending therethrough, thermally actuated means within the housing for opening and closing the passage to the flow of fluid therethrough, the housing having an outer circumferential portion designed to fit within an opening in said wall, and a metal casing encircling and fixed to a portion of said housing and having a radial metal flange overlying one side of the marginal area of the wall around the aperture, said housing having a radial metal flange overlying the opposite side of said marginal area of the wall.
Claim 8
Dependent Claim
107 words
A valve assembly for mounting in a wall of a fluid container transparent to microwaves, comprising a housing having a passage extending therethrough, thermally actuated means within the housing for opening and closing the passage to the flow of fluid therethrough, the housing having an outer circumferential portion designed to fit within an opening in said wall, and a metal casing encircling and fixed to a portion of said housing and having a radial metal flange overlying one side of the marginal area of the wall around the aperture, said housing having a radial metal flange overlying the opposite side of said marginal area of the wall.
Claim 9
Dependent Claim
106 words
A valve assembly for mounting in a monmetallic microwave transparent wall of a fluid container comprising a valve housing having a passage extending therethrough, thermally actuated metallic means within the housing for opening and closing the passage to the flow of fluid, said housing having a metal surface for preventing passage of microwaves through the housing to said metallic means, the housing further having an outer circumferential portion shaped to fit within an opening in said wall, and a pair of radially directed metal flanges encircling and carried by said housing and overlying respective opposite surfaces of the marginal areas of said wall around the opening.
Claim 10
Dependent Claim
106 words
A valve assembly for mounting in a monmetallic microwave transparent wall of a fluid container comprising a valve housing having a passage extending therethrough, thermally actuated metallic means within the housing for opening and closing the passage to the flow of fluid, said housing having a metal surface for preventing passage of microwaves through the housing to said metallic means, the housing further having an outer circumferential portion shaped to fit within an opening in said wall, and a pair of radially directed metal flanges encircling and carried by said housing and overlying respective opposite surfaces of the marginal areas of said wall around the opening.
Claim 11
Dependent Claim
27 words
A valve assembly as set forth in claim 6 wherein said housing is nonmetallic and said metal surface comprises a metal casing disposed over the nonmetallic housing.
Claim 12
Dependent Claim
14 words
A valve assembly as set forth in claim 6 wherein said housing is metal.
Claim 13
Dependent Claim
49 words
A valve assembly as set forth in claim 6 wherein one of said flanges is integral with said housing, the other flange is a separate member fixed to the housing, and a resilient O-ring seal is disposed between one of the flanges and the adjacent surface of the wall.
Claim 14
Dependent Claim
20 words
A valve assembly as set forth in claim 6 wherein said casing flange and said ring have curved outer edges.
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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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |