Electric heating – Microwave heating – Waveguide applicator
Reexamination Certificate
2011-04-05
2011-04-05
Van, Quang T (Department: 3742)
Electric heating
Microwave heating
Waveguide applicator
C219S722000, C219S739000
Reexamination Certificate
active
07919735
ABSTRACT:
In fabricating a door switch for a microwave oven, two switches are incorporated in a single switch case to allow a reduction in the size and to allow common use of switch components, thereby achieving a cost reduction through a reduction in the number of components. Further, a contact switching structure tilted in conjunction with opening and closing of a door is provided to achieve high accuracy in switching the switches. There is provided a first switch whose contact portions are switched by elastically displacing a conductive contact piece in the switch case when a first tilting lever is tilted, a second switch whose contact portions are switched by elastically displacing another conductive contact piece in the switch case at timing that is slightly different from the timing for switching the contact portions of the first switch, and a third switch which is switched when a second tilting lever is tilted.
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Japanese Office action dated Aug. 4, 2009.
Hayakawa Yuji
Kiyono Yasuhiro
Mizuta Isao
Naruo Toshihiro
Yamamoto Kouji
Omron Corporation
Panasonic Corporation
Pearne & Gordon LLP
Van Quang T
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