US4441003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyorized microwave oven with multiple lanes
Assignee: Raytheon Co
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Filing: 1982-04-16
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Granted: 1984-04-03
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Expires: 2002-04-16
Abstract
Abstract A conveyorized microwave oven having multiple independently controlled lanes. Specifically, a plurality of conveyor belts are directed into, through, and out of the microwave cavity. The belts can be operated at different speeds so that foods requiring different microwave exposure times can be cooked simultaneously. Suppression tunnels surrounding the conveyor belts at the openings into and out of the cavity prevent the escape of microwave energy from the cavity.
Inventors
- 👤 II E. Eugene Eves
- 👤 Richard H. Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:43
CPC Classifications
A; A21; A21B; A21B1/00; A21B1/42; A21B1/48; A21B2/00; H; H05; H05B; H05B6/00; H05B6/64; H05B6/78; H05B6/782
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
The method of cooking product in a conveyorized microwave oven, comprising the steps of: providing a conductive cavity having first and second apertures on opposing walls for providing continuous access to the interior thereof wherein leakage of microwave energy is prevented by a first microwave suppression tunnel coupled with said first aperture and a second microwave suppression tunnel coupled with said second aperture; energizing said cavity with microwave energy; moving a first conveyor belt through said first aperture, said cavity and said second aperture for transporting product to be heated by said microwave energy; moving a second conveyor belt through said first aperture, said cavity and said second aperture for transporting product to be heated by said microwave energy; and controlling the speed of said first conveyor belt in accordance with the load of said product on said first conveyor belt, the load of said product on said second conveyor belt, and the effective dummy load of said oven.
Claim 2
Independent Claim
159 words
The method of cooking product in a conveyorized microwave oven, comprising the steps of: providing a conductive cavity having first and second apertures on opposing walls for providing continuous access to the interior thereof wherein leakage of microwave energy is prevented by a first microwave suppression tunnel coupled with said first aperture and a second microwave suppression tunnel coupled with said second aperture; energizing said cavity with microwave energy; moving a first conveyor belt through said first aperture, said cavity and said second aperture for transporting product to be heated by said microwave energy; moving a second conveyor belt through said first aperture, said cavity and said second aperture for transporting product to be heated by said microwave energy; and controlling the speed of said first conveyor belt in accordance with the load of said product on said first conveyor belt, the load of said product on said second conveyor belt, and the effective dummy load of said oven.
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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |