US3731038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zero-mode microwave applicator
Assignee: Patents and Development Ltd
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Filing: 1971-02-22
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Granted: 1973-05-01
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Expires: 1991-02-22
Abstract
Abstract A fast-mode particularly a zero-mode microwave application for the heating, drying, curing or other treatment by microwave energy of workpieces containing lossy dielectric material having a fast wave microwave structure and microwave energization means connected to the structure to energize it such that a region adjacent said structure will contain a predominance of zero-mode or near zero-mode electric field energy.
Inventors
- 👤 R Bosisio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:05
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/80; H05B6/74; H05B2206/00; H05B2206/04; H05B2206/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A zero-mode microwave applicator for the heating, drying, or curing of workpieces containing lossy material comprising: a. a first set of parallel conducting rods positioned in spaced relation at fixed distances in a circle, b. a second set of parallel conducting rods interleaved alternately in the circle with the first set, c. a first transmission line in the form of an annular conducting plate encircling the said rods and shaped to make electrical contact with the first set of rods, d. a second transmission line in the form of an annular conducting plate parallel to the first and encircling the said rods and shaped to make electrical contact with the second set of rods, e. shorting plates connected at each end of said roDs, and, f. microwave energization means comprising a coaxial transmission line, the center conductor of which makes electrical contact with one of the said transmission lines and the outer conductor with one of the said shorting plates.
Claim 2
Dependent Claim
160 words
A zero-mode microwave applicator for the heating, drying, or curing of workpieces containing lossy material comprising: a. a first set of parallel conducting rods positioned in spaced relation at fixed distances in a circle, b. a second set of parallel conducting rods interleaved alternately in the circle with the first set, c. a first transmission line in the form of an annular conducting plate encircling the said rods and shaped to make electrical contact with the first set of rods, d. a second transmission line in the form of an annular conducting plate parallel to the first and encircling the said rods and shaped to make electrical contact with the second set of rods, e. shorting plates connected at each end of said roDs, and, f. microwave energization means comprising a coaxial transmission line, the center conductor of which makes electrical contact with one of the said transmission lines and the outer conductor with one of the said shorting plates.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |