US3745291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave heating applicator
Assignee: Raytheon Co
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Filing: 1972-02-18
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Granted: 1973-07-10
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Expires: 1992-02-18
Abstract
Abstract An apparatus for and method of heating or preheating articles with microwave energy. The article is rotatably disposed within an enclosure adapted to be radiated with electromagnetic energy at 915 and/or 2450 MHz by waveguide means terminating in a radiator, such as a flared horn. The end of the radiator is shaped to conform to any article, for example, pneumatic type rubber tires having annular shaped bodies for preheating prior to vulcanization or recapping. Multimode distribution of energy within the enclosure is achieved without resort to mode stirrers. Means are disclosed for altering the displacement of the articles during heating, either vertically or angularly, to provide uniform heating across the article surface.
Inventors
- 👤 R Peterson
- 👤 C Gilliatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:40
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/08; H; H05; H05B; H05B6/00; H05B6/64; H05B6/6408; H05B6/6411; H05B6/70; H05B6/701; B29C35/0805; B29C2035/0855; B29L; B29L2030/00; H05B2206/00; H05B2206/04; H05B2206/044
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
62 words
Microwave heating apparatus comprising: an enclosure; a source of electromagnetic energy; means for disposition of an article to be heated within said enclosure; and means for distributing said electromagnetic energy within said enclosure; said distributing means comprising waveguide feed means terminating in an open-ended horn-type energy radiator means with said open end contoured to substantially conform to the shape of said article.
Claim 2
Dependent Claim
62 words
Microwave heating apparatus comprising: an enclosure; a source of electromagnetic energy; means for disposition of an article to be heated within said enclosure; and means for distributing said electromagnetic energy within said enclosure; said distributing means comprising waveguide feed means terminating in an open-ended horn-type energy radiator means with said open end contoured to substantially conform to the shape of said article.
Claim 3
Dependent Claim
21 words
The apparatus according to claim 1 wherein said radiator means are disposed on diametrically opposite sides of the article being heated.
Claim 4
Dependent Claim
15 words
The apparatus according to claim 1 wherein said radiator means are disposed at staggered levels.
Claim 5
Dependent Claim
28 words
The apparatus according to claim 1 wherein said radiator means are disposed in all four quadrants surrounding a circular path of travel of the article within the enclosure.
Claim 6
Dependent Claim
14 words
The apparatus according to claim 1 and means for rotating said article during heating.
Claim 7
Dependent Claim
15 words
The apparatus according to claim 1 and means for vertically displacing said article during heating.
Claim 8
Dependent Claim
15 words
The apparatus according to claim 1 and means for angularly displacing said article during heating.
Claim 9
Dependent Claim
27 words
The apparatus according to claim 1 wherein said enclosure comprises spaced parallel conductive sidewalls and said radiator means are disposed on at least one of said walls.
Claim 10
Dependent Claim
21 words
The apparatus according to claim 8 and means for moving at least one of said walls to alter the spacing therebetween.
Claim 11
Dependent Claim
32 words
The apparatus according to claim 1 wherein said enclosure is defined by conductive walls with at least one of said walls having an access opening and a door enclosing said access opening.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |