US4140888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-feed microwave oven
Assignee: Goodman Co LP
•
Filing: 1976-12-01
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Granted: 1979-02-20
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Expires: 1996-12-01
Abstract
Abstract A microwave oven including a window portion in each of two opposing side walls through which microwave energy is fed into the oven cavity. The window portions are covered by a microwave transparent panel which is configured to support a shelf within the oven cavity.
Inventors
- 👤 David A. Baron
- 👤 Charles R. Buffler
- 👤 Eldon J. Klemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:41
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/72; H05B6/725; H05B6/6402; H05B6/70; H05B6/704
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A microwave oven adapted to cook two or more dissimilar foodstuffs simultaneously including an oven cavity; a microwave energy source; a pair of energy mixing chambers including stirrer means for receiving said microwave energy from said source and transmitting said energy to said cavity, each of said chambers communicating with an opposite side wall of said cavity whereby microwave energy is supplied to said cavity through said side walls; and means for dividing said cavity into first and second cooking regions, said dividing means being electrically insulated from said side walls.
Claim 2
Dependent Claim
91 words
A microwave oven adapted to cook two or more dissimilar foodstuffs simultaneously including an oven cavity; a microwave energy source; a pair of energy mixing chambers including stirrer means for receiving said microwave energy from said source and transmitting said energy to said cavity, each of said chambers communicating with an opposite side wall of said cavity whereby microwave energy is supplied to said cavity through said side walls; and means for dividing said cavity into first and second cooking regions, said dividing means being electrically insulated from said side walls.
Claim 3
Dependent Claim
165 words
A microwave oven for cooking two or more dissimilar foods simultaneously comprising in combination: a microwave energy source; an oven cavity including top and bottom walls, a back wall, an open front portion, and a pair of opposing side walls each having a cut-away window portion therein; an energy mixing chamber mounted to the exterior side of each of said side walls in microwave energy transmitting communication with a respective one of said window portions, each of said chambers having energy stirrer means rotatably mounted therein; waveguide means interconnecting said microwave energy source and each of said energy mixing chambers; an inner panel substantially transparent to microwave energy mounted to the interior side of each of said side walls, said inner panels substantially covering said window portions; moveable shelf means supported between said inner panels to form a first cooking region above said shelf for cooking a first food portion and a second cooking region below said shelf for cooking a second, dissimilar food portion.
Claim 4
Dependent Claim
165 words
A microwave oven for cooking two or more dissimilar foods simultaneously comprising in combination: a microwave energy source; an oven cavity including top and bottom walls, a back wall, an open front portion, and a pair of opposing side walls each having a cut-away window portion therein; an energy mixing chamber mounted to the exterior side of each of said side walls in microwave energy transmitting communication with a respective one of said window portions, each of said chambers having energy stirrer means rotatably mounted therein; waveguide means interconnecting said microwave energy source and each of said energy mixing chambers; an inner panel substantially transparent to microwave energy mounted to the interior side of each of said side walls, said inner panels substantially covering said window portions; moveable shelf means supported between said inner panels to form a first cooking region above said shelf for cooking a first food portion and a second cooking region below said shelf for cooking a second, dissimilar food portion.
Claim 5
Dependent Claim
19 words
The apparatus of claim 2 wherein inner panels include integrally formed ridge portions for supporting said moveable shelf means.
Claim 6
Dependent Claim
25 words
The apparatus of claim 2 wherein said inner panels are attached to said side walls by fastener means that are integrally molded into said panels.
Claim 7
Dependent Claim
20 words
The apparatus of claim 2 wherein said inner panels cover substantially all of the interior surface of said side walls.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |