Electric heating – Metal heating – Of cylinders
Patent
1986-09-29
1988-11-29
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1055E, 312236, 29513, H05B 664
Patent
active
047883952
ABSTRACT:
A microwave oven structure whose constituent members can be easily and firmly assembled without using a spot-welding process. In given mating members to be joined, through-holes are formed in one of the mating members and squeezed or cut-and-raised projections are formed on the other mating member at positions corresponding to the through-holes whereby the mating members are joined with each other by rolling-over method in which the projections are inserted into the through-holes and caulked by rolling over or bonding the projections.
REFERENCES:
patent: 1750833 (1930-03-01), Carns
patent: 2092505 (1937-09-01), Gort
patent: 2996790 (1961-08-01), Trafford
patent: 3083773 (1963-04-01), Nagel et al.
patent: 3640556 (1972-02-01), Bennett
patent: 3867605 (1975-02-01), Yee
patent: 3909919 (1975-10-01), Miyabayashi et al.
patent: 4159406 (1979-06-01), Tate et al.
patent: 4282416 (1981-08-01), White
patent: 4563559 (1986-01-01), Enami
Leung Philip H.
Sharp Kabushiki Kaisha
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