EP0184069A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Door assembly for microwave heating apparatus
Assignee: Panasonic Holdings Corp
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Filing: 1985-11-19
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Granted: —
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Expires: 2005-11-19
Abstract
Abstract A high frequency heating apparatus comprising an oven-defining structure having an access opening in communication with a heating chamber (19) defined therein, and a hingedly supported metallic door for selectively opening and closing the access opening. The door has its peripheral area formed with a groove open towards the oven-defining structure, the bottom of which groove is situated frontwardly of the door with respect of the apparatus. An outer wall (10) of the groove is formed with a plurality of cutouts (7A) and a plurality of generally rectangular openings (13) alternating with the cutouts, each of the cutouts and each of the rectangular openings having one edge positioned on one side of a setup portion, protruding from the bottom of the groove, adjacent the oven-defining structure. The outer wall has a portion bent to protrude transversely into the groove to define a partitioning wall (15).
Inventors
- 👤 Okihiko Nakano
- 👤 Yohzoh Ishimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 06:38
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/76; H05B6/763
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
140 words
A high frequency heating apparatus comprising an oven-defining structure having an access opening in communication with a heating chamber defined therein; and a hingedly supported metallic door for selectively opening and closing the access opening, said door having its peripheral area formed with a groove open towards the oven-defining structure, the bottom of which groove is situated frontwardly of the door with respect to the apparatus, an outer wall of said groove being formed with a plurality of cutouts and a plurality of generally rectangular openings alternating with said cutouts, each of said cutouts and each of said rectangular openings having one edge positioned on one side of a setup portion, protruding from the bottom of the groove, adjacent the oven-defining structure, said outer wall havipg a portion bent to protrude transversely into the groove to define a partitioning wall.
Claim 2
Dependent Claim
140 words
A high frequency heating apparatus comprising an oven-defining structure having an access opening in communication with a heating chamber defined therein; and a hingedly supported metallic door for selectively opening and closing the access opening, said door having its peripheral area formed with a groove open towards the oven-defining structure, the bottom of which groove is situated frontwardly of the door with respect to the apparatus, an outer wall of said groove being formed with a plurality of cutouts and a plurality of generally rectangular openings alternating with said cutouts, each of said cutouts and each of said rectangular openings having one edge positioned on one side of a setup portion, protruding from the bottom of the groove, adjacent the oven-defining structure, said outer wall havipg a portion bent to protrude transversely into the groove to define a partitioning wall.
Claim 3
Dependent Claim
31 words
The apparatus as claimed in Claim 1, wherein the partition wall is prepared from a member separate from the door and is rigidly secured to the groove formed in the door.
Claim 4
Dependent Claim
40 words
The apparatus as claimed in Claim 2, wherein the width of the outer wall of the groove is so selected as to permit it to terminate approximately flush with said one edge of each of the cutouts and rectangular openings.
Claim 5
Dependent Claim
39 words
The apparatus as claimed in Claim 2, wherein there is a small gap between the outer peripheral face of the partitioning wall and the outer wall of the groove at locations where a spot welding is to be effected.
Claim 6
Dependent Claim
151 words
A high frequency heating apparatus comprising an oven-defining structure having an access opening in communication with a heating chamber defined therein, and also having a front trim panel exteriorly around the access opening and a lateral flange protruding frontwardly of the apparatus from an outer periphery of the front trim panel; a hingedly supported door for selectively opening and closing the access opening; a high frequency attenuating device provided in a peripheral portion of the door; and a switch or the like for interrupting the generation of high frequency when the door is opened, said lateral flange having a width so selected as to be greater than the size of a gap formed between one of the opposite surface of the peripheral portion of the door and confronting the oven-defining structure and the front trim when said one of the opposite surfaces is located at an operating position of the switch.
Claim 7
Dependent Claim
151 words
A high frequency heating apparatus comprising an oven-defining structure having an access opening in communication with a heating chamber defined therein, and also having a front trim panel exteriorly around the access opening and a lateral flange protruding frontwardly of the apparatus from an outer periphery of the front trim panel; a hingedly supported door for selectively opening and closing the access opening; a high frequency attenuating device provided in a peripheral portion of the door; and a switch or the like for interrupting the generation of high frequency when the door is opened, said lateral flange having a width so selected as to be greater than the size of a gap formed between one of the opposite surface of the peripheral portion of the door and confronting the oven-defining structure and the front trim when said one of the opposite surfaces is located at an operating position of the switch.
Claim 8
Dependent Claim
39 words
The apparatus as claimed in Claim 5, wherein the sum of the width of the front trim panel and that of the lateral flange is selected to be substantially equal to one quarter wavelength of the high frequency used.
Claim 9
Dependent Claim
102 words
The apparatus as claimed in Claim 5, wherein the attenuating device comprises a slitted structure having a partitioning wall and a rear wall confronting the oven-defining structure, and wherein said door has a flat area defined inwardly around the attenuating device, said flat area being set back from the rear wall a distance sufficient to accommodate the thickness of a liner for covering the slitted structure, said distance being, however, smaller than the size of a gap formed between an inner wall of a groove, defined in the peripheral portion of the door exteriorly around the attenuating device, and the partitioning wall.
Claim 10
Dependent Claim
49 words
A high frequency heating apparatus comprising a hingedly supported metallic door having its peripheral portion formed with cutouts and generally rectangular openings alternating with the cutouts, and a reinforcing plate secured to the door without closing a plurality of observatqry perforations defined in a central area of the door.
Claim 11
Dependent Claim
49 words
A high frequency heating apparatus comprising a hingedly supported metallic door having its peripheral portion formed with cutouts and generally rectangular openings alternating with the cutouts, and a reinforcing plate secured to the door without closing a plurality of observatqry perforations defined in a central area of the door.
References Cited (Backward Citations)
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