US4358653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination microwave oven
Assignee: Goodman Co LP
•
Filing: 1980-05-27
•
Granted: 1982-11-09
•
Expires: 2000-05-27
Abstract
Abstract A combination microwave and electrically heated oven having a door with a high temperature seal which inhibits the escape of hot gases around the periphery of the door and which is isolated from the major portion of the electric fields of the microwave energy entering the space between the door and the oven aperture walls by a slotted choke microwave seal so that the vapor seal may be formed which high microwave energy absorption characteristics without either reducing the intensity of microwave energy in the oven or causing substantial heating of the vapor seal by microwave energy.
Inventors
- 👤 Bernard J. Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:18
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/647; H05B6/6482; F; F24; F24C; F24C15/00; F24C15/02; F24C15/021; H05B6/76; H05B6/766
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
In combination: A microwave conductive cavity having an aperture in a wall thereof; means for energizing said cavity with microwave energy; an electrical resistive heater extending through said aperture into said cavity for heating the interior thereof; said heater comprising an elongated resistive heating element; said heater further comprising an outer conductor shielding said element from said microwave energy; means for electrically connecting said outer conductor to said wall; and a tubular conductive choke member connected to said wall extending outwardly from said aperture surrounding a portion of said heater.
Claim 2
Dependent Claim
90 words
In combination: A microwave conductive cavity having an aperture in a wall thereof; means for energizing said cavity with microwave energy; an electrical resistive heater extending through said aperture into said cavity for heating the interior thereof; said heater comprising an elongated resistive heating element; said heater further comprising an outer conductor shielding said element from said microwave energy; means for electrically connecting said outer conductor to said wall; and a tubular conductive choke member connected to said wall extending outwardly from said aperture surrounding a portion of said heater.
Claim 3
Dependent Claim
21 words
The combination in accordance with claim 1 wherein said electrical connecting means comprises a metal plate bonded to said outer conductor.
Claim 4
Dependent Claim
15 words
The combination in accordance with claim 2 wherein said plate is screwed to said wall.
Claim 5
Dependent Claim
25 words
The combination in accordance with claim 1 further comprising a porcelain enamel layer covering at least a portion of the inside surface of said wall.
Claim 6
Dependent Claim
26 words
The combination in accordance with claim 1 wherein said tubular conductive choke member has a length of approximately one-quarter of the wavelength of said microwave energy.
Claim 7
Dependent Claim
20 words
The combination in accordance with claim 1 wherein said tubular conductive choke member has an inner layer of porcelain enamel.
Claim 8
Dependent Claim
127 words
A combination microwave and electric oven comprising: a microwave conductive cavity coated with porcelain enamel, said cavity having an access door and an aperture in the wall opposite therefrom; means for energizing said cavity with microwave energy; an electrical resistive heater extending through said aperture into said cavity for heating said cavity; said heater comprising an elongated resistive heating element; said heater further comprising an electrically insulating material covering said element; said heater further comprising an outer conductor shielding said insulating material from microwave energy; means for electrically connecting said outer conductor to said wall; and a tubular conductive choke member having its inside covered with porcelain enamel, said member being connected to said wall and extending outwardly from said aperture surrounding a portion of said heater.
Claim 9
Dependent Claim
127 words
A combination microwave and electric oven comprising: a microwave conductive cavity coated with porcelain enamel, said cavity having an access door and an aperture in the wall opposite therefrom; means for energizing said cavity with microwave energy; an electrical resistive heater extending through said aperture into said cavity for heating said cavity; said heater comprising an elongated resistive heating element; said heater further comprising an electrically insulating material covering said element; said heater further comprising an outer conductor shielding said insulating material from microwave energy; means for electrically connecting said outer conductor to said wall; and a tubular conductive choke member having its inside covered with porcelain enamel, said member being connected to said wall and extending outwardly from said aperture surrounding a portion of said heater.
Claim 10
Dependent Claim
20 words
The oven recited in claim 7 wherein said electrical connecting means comprises a metal plate bonded to said outer conductor.
Claim 11
Dependent Claim
14 words
The oven recited in claim 8 wherein said plate is screwed to said wall.
Claim 12
Dependent Claim
25 words
The oven recited in claim 7 wherein said tubular conductive choke member has a length of approximately one-quarter of the wavelength of said microwave energy.
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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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |