Claims
- 1. 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.
- 2. The combination in accordance with claim 1 wherein said electrical connecting means comprises a metal plate bonded to said outer conductor.
- 3. The combination in accordance with claim 2 wherein said plate is screwed to said wall.
- 4. 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.
- 5. 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.
- 6. The combination in accordance with claim 1 wherein said tubular conductive choke member has an inner layer of porcelain enamel.
- 7. 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.
- 8. The oven recited in claim 7 wherein said electrical connecting means comprises a metal plate bonded to said outer conductor.
- 9. The oven recited in claim 8 wherein said plate is screwed to said wall.
- 10. 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.
CROSS-REFERENCE TO RELATED CASES
This is a continuation of application Ser. No. 855,051, filed Nov. 25, 1977 now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (5)
Number |
Date |
Country |
1070311 |
Dec 1959 |
DEX |
1515070 |
Jun 1969 |
DEX |
2410105 |
Sep 1974 |
DEX |
2312165 |
Dec 1976 |
FRX |
52-58143 |
May 1977 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
855051 |
Nov 1977 |
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