US4114013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Choke for combined microwave and self-cleaning oven
Assignee: General Electric Co
•
Filing: 1977-07-28
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Granted: 1978-09-12
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Expires: 1997-07-28
Abstract
Abstract A combined microwave and self-cleaning oven has a choke surrounding the oven liner with the opening of the choke cavity adjacent the lip of the liner. The choke cavity has a rib at each of several groundpoints to trap air within the cavity. This trapped air thermally insulates the oven liner lip region so that pyrolytic self-cleaning of the oven can be accomplished without the aid of a mullion heater. For best electrical effectiveness, the choke groundpoints are preferably spaced a distance of between one-half and one wavelength.
Inventors
- 👤 Donald J. Simon
- 👤 Louis H. Fitzmayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:13
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6402; H05B6/6405; F; F24; F24C; F24C14/00; F24C14/02; H05B6/76; H05B6/763
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
A combined microwave and self-cleaning oven including an oven liner having an opening, said liner having a lip surrounding the periphery of said opening, means to produce microwave energy of a selected wavelength within said liner, a door having sealing means engaging said lip when said door is in its closed position to seal said opening, a choke surrounding said liner adjacent said lip, said choke including a cavity with means to trap air therein to thermally insulate said liner adjacent said lip during pyrolytic self-cleaning of said liner, and to provide groundpoints.
Claim 2
Dependent Claim
93 words
A combined microwave and self-cleaning oven including an oven liner having an opening, said liner having a lip surrounding the periphery of said opening, means to produce microwave energy of a selected wavelength within said liner, a door having sealing means engaging said lip when said door is in its closed position to seal said opening, a choke surrounding said liner adjacent said lip, said choke including a cavity with means to trap air therein to thermally insulate said liner adjacent said lip during pyrolytic self-cleaning of said liner, and to provide groundpoints.
Claim 3
Dependent Claim
78 words
The oven according to claim 1 in which said choke means includes a metallic member spaced from said liner the selected height to form said cavity therebetween, means to close said cavity at the end remote from said lip, and said metallic member terminating prior to said lip to have said opening rearwardly of said lip; and said trapping means includes means extending from said closing means toward said lip at each of the groundpoints in said cavity.
Claim 4
Dependent Claim
17 words
The oven according to claim 2 in which said extending means is integral with said metallic member.
Claim 5
Dependent Claim
14 words
The oven according to claim 3 in which said extending means engages said lip.
Claim 6
Dependent Claim
20 words
The oven according to claim 2 in which said extending means is separate from said metallic member and secured thereto.
Claim 7
Dependent Claim
14 words
The oven according to claim 5 in which said extending means engages said lip.
Claim 8
Dependent Claim
14 words
The oven according to claim 2 in which said extending means engages said lip.
Claim 9
Dependent Claim
30 words
The oven according to claim 1 in which said trapping means includes means disposed at each of the groundpoints in said cavity to substantially block air flow through said cavity.
Claim 10
Dependent Claim
22 words
The oven according to claim 8 in which the groundpoints are spaced from each other a distance approximately equal to one wavelength.
References Cited (Backward Citations)
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Cited
US3846608A
Cited
US4059742A
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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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |