Unitary microwave oven door

Details Unitary microwave oven door Unitary microwave oven door

1996-01-05

1998-01-06

Leung, Philip H.

Electric heating

Microwave heating

Radiation protection

219743, 174 35GC, H05B 676

Patent

active

057057974

ABSTRACT:
A door for preventing leakage of electromagnetic wave of a microwave oven includes: a front panel forming a front surface of a door; a first contact surface expanded from the circumference of the front panel and recessed forward a cavity of the microwave oven so as to contact an entrance of the cavity; a door frame portion expanded from the circumference of the first contact surface and proceeding to the front surface of the door so as to form a frame of the door; a second contact surface expanded from the circumference of the door frame portion and recessed toward the cavity so as to contact a frame of the cavity entrance; a choke cavity formed between the door frame and the second contact surface; and a slit formed on the circumference of the door frame in a predetermined interval and expanded into the choke cavity in a predetermined length. Thus, leakage of the electromagnetic wave can be prevented due to the slit shape of a predetermined period. Also, various designs can be provided by making the door panel to be attached of detached to/from the door frame.

REFERENCES:
patent: 4166207 (1979-08-01), Burke
patent: 4713511 (1987-12-01), Katoh
patent: 4742201 (1988-05-01), Nakano et al.
patent: 4868359 (1989-09-01), Iwabuchi et al.
patent: 5036171 (1991-07-01), Kim et al.
patent: 5075525 (1991-12-01), Jung
patent: 5206478 (1993-04-01), Lee
patent: 5418352 (1995-05-01), Cho

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