Patent US3849623A successfully refreshed from Google Patents.
US3849623A
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Microwave heating apparatus
Assignee: Raytheon Co
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Filing: 1973-10-25
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Granted: 1974-11-19
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Expires: 1993-10-25
Abstract
Abstract A microwave heating apparatus is disclosed having a system for support and radiating articles within an enclosure. Such system comprises a movable table adapted to move sequentially in orthogonal directions and provide a substantially continuous orbital movement. The microwave energy radiation is thereby distributed uniformly to heat a large number of supported articles without resorting to prior art distribution means such as cyclically varying mode stirring means.
Inventors
- 👤 C Gilliatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:33
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/80
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
68 words
Microwave heating apparatus comprising: a plurality of conductive walls defining an enclosure; a source of electromagnetic energy having a predetermined operating frequency; means for radiating said energy within said enclosure; a system for supporting and moving an article to be heated within said enclosure; said system comprising a table member and means to move said table member sequentially in orthogonal linear directions to provide substantially continuous orbital movement.
Claim 2
Dependent Claim
68 words
Microwave heating apparatus comprising: a plurality of conductive walls defining an enclosure; a source of electromagnetic energy having a predetermined operating frequency; means for radiating said energy within said enclosure; a system for supporting and moving an article to be heated within said enclosure; said system comprising a table member and means to move said table member sequentially in orthogonal linear directions to provide substantially continuous orbital movement.
Claim 3
Dependent Claim
60 words
The apparatus according to claim 1 wherein said system comprises a plurality of bearing assemblies including superimposed upper and lower fixed ball race members and a movable center ball race member with said upper and lower members secured, respectively, to said table member and an enclosure conductive wall at predetermined points with said center members being interconnected by coplanar rods.
Claim 4
Dependent Claim
37 words
The apparatus according to claim 2 wherein said bearing assemblies provide orthogonally disposed channel and race grooves together with a plurality of balls in each assembly adapted to move said center members orthogonally in two linear directions.
Claim 5
Dependent Claim
29 words
The apparatus according to claim 3 wherein at least three balls are provided in each race groove and at least two of said balls are of a larger diameter.
Claim 6
Dependent Claim
30 words
The apparatus according to claim 1 wherein said table member is provided with opposing parallel sides and said bearing assemblies are disposed adjacent to the corners of said table member.
Claim 7
Dependent Claim
19 words
The apparatus according to claim 2 wherein said coplanar rods are loosely coupled to a substantially rigid plate member.
Claim 8
Dependent Claim
39 words
The apparatus according to claim 1 wherein the total excursion distance of said continuous orbital movement in orthogonal directions is at least one-quarter of a wavelength at the frequency of the free space energy waves radiated within said enclosure.
Claim 9
Dependent Claim
44 words
The apparatus according to claim 1 wherein said bearing assemblies comprise superimposed upper and lower ball race members secured, respectively, to said table member and an enclosure conductive wall; said members defining circular oppositely disposed race grooves with a ball disposed within both grooves.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |