US4253005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave suppression apparatus
Assignee: Raytheon Co
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Filing: 1979-09-17
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Granted: 1981-02-24
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Expires: 1999-09-17
Abstract
Abstract A microwave suppression apparatus having two lengthwise tunnels and a plurality of septums that sequentially move through both tunnels in a continuous loop. The septums form microwave seals with inner wall portions of the tunnels to prevent the leakage of microwave energy through an access opening in an energized enclosure. A conveyor which carries a product through the access opening to the energized enclosure also passes through one of the two tunnels of the suppression apparatus.
Inventors
- 👤 Paul J. Gordon
- 👤 II E. Eugene Eves
- 👤 Richard H. Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:42
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/76; H05B6/78; H05B2206/00; H05B2206/04; H05B2206/046
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
62 words
A microwave energy suppression apparatus for substantially preventing the leakage of microwave energy from an access opening in a microwave energized enclosure, comprising: an elongated hollow structure divided into first and second lengthwise tunnels; and means for moving reflectors in a continuous loop through said first and second tunnels, said reflectors providing microwave energy seals with inner wall portions of said tunnel.
Claim 2
Dependent Claim
62 words
A microwave energy suppression apparatus for substantially preventing the leakage of microwave energy from an access opening in a microwave energized enclosure, comprising: an elongated hollow structure divided into first and second lengthwise tunnels; and means for moving reflectors in a continuous loop through said first and second tunnels, said reflectors providing microwave energy seals with inner wall portions of said tunnel.
Claim 3
Dependent Claim
20 words
The apparatus recited in claim 1 further comprising a conveyor for moving product through said first tunnel into said enclosure.
Claim 4
Dependent Claim
40 words
The apparatus recited in claim 1 wherein said seals comprise means for preventing the transmission of microwave energy in the gap between said wall portions and said reflectors in a direction substantially perpendicular to the length of said hollow structure.
Claim 5
Dependent Claim
22 words
The apparatus recited in claim 3 wherein said preventing means comprises rows of conductive posts extending from the periphery of said reflectors.
Claim 6
Dependent Claim
17 words
The apparatus recited in claim 4 wherein said reflectors comprise rectangular box structures fabricated from conductive surfaces.
Claim 7
Dependent Claim
27 words
The apparatus recited in claim 3 wherein said moving means comprises a chain supported on each lengthwise side of said hollow structure, said chain supporting said reflectors.
Claim 8
Dependent Claim
68 words
A microwave energy suppression apparatus for substantially preventing the leakage of microwave energy from a continuous access opening in a microwave energized enclosure, comprising: an elongated conductive cavity having a central portion divided into first and second parallel tunnels; and means for cycling a plurality of reflectors within said cavity through said first and second tunnels, said reflectors forming microwave seals with inner wall portions of said tunnels.
Claim 9
Dependent Claim
68 words
A microwave energy suppression apparatus for substantially preventing the leakage of microwave energy from a continuous access opening in a microwave energized enclosure, comprising: an elongated conductive cavity having a central portion divided into first and second parallel tunnels; and means for cycling a plurality of reflectors within said cavity through said first and second tunnels, said reflectors forming microwave seals with inner wall portions of said tunnels.
Claim 10
Dependent Claim
28 words
The apparatus recited in claim 7 wherein said cycling means comprises two movable chains supporting said reflectors, said chains forming a loop through said first and second tunnels.
Claim 11
Dependent Claim
20 words
The apparatus recited in claim 8 further comprising a conveyor for moving product through said first tunnel into said enclosure.
Claim 12
Dependent Claim
40 words
The apparatus recited in claim 7 wherein said seals comprise means for preventing the transmission of microwave energy in the gap between said wall portions and said reflectors in a direction substantially perpendicular to the length of said hollow structure.
Claim 13
Dependent Claim
25 words
The apparatus recited in claim 10 wherein said preventing means comprises a plurality of rows of conductive posts extending from the periphery of said reflectors.
Claim 14
Dependent Claim
88 words
In combination: an elongated conductive cavity having a central portion divided into first and second parallel tunnels extending in the lengthwise direction of said cavity; a conveyor for carrying product through said first tunnel into a microwave energized enclosure by way of an access opening; a plurality of conductive reflectors having rows of conductive posts around the periphery; and means for moving said reflectors through said first and second tunnels in a continuous loop to form microwave seals with inner wall portions of said tunnels and said conveyor.
Claim 15
Dependent Claim
88 words
In combination: an elongated conductive cavity having a central portion divided into first and second parallel tunnels extending in the lengthwise direction of said cavity; a conveyor for carrying product through said first tunnel into a microwave energized enclosure by way of an access opening; a plurality of conductive reflectors having rows of conductive posts around the periphery; and means for moving said reflectors through said first and second tunnels in a continuous loop to form microwave seals with inner wall portions of said tunnels and said conveyor.
Claim 16
Dependent Claim
36 words
The combination in accordance with claim 12 wherein said moving means comprises a pair of chains each of which is supported on a side wall of said cavity and passes through said first and second tunnels.
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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |