Turn table driving apparatus of microwave oven

Details Turn table driving apparatus of microwave oven Turn table driving apparatus of microwave oven

1997-02-03

1998-09-08

Leung, Philip H.

Electric heating

Microwave heating

Field modification

219754, 219762, H05B 678

Patent

active

058048006

ABSTRACT:
A microwave oven includes a cooking chamber in which a turn table is disposed for rotation about a vertical axis, and vertical up/down movement along the axis. The turn table has an axle extending downwardly therefrom along the axis. The lower end of the axle rests on a cam surface of a rotary cam member whereby the cam surface causes the axle (and thus the turn table) to alternately move up and down when the rotary cam member is rotated by a first motor. A second motor is connected to the axle to simultaneously rotate the axle and turn table. A traction member is fixed to the rotary cam and overlies a portion of the axle. The traction member extends along a portion of the cam surface which causes the axle to move downwardly, whereby the traction member can pull the axle downwardly if the axle does not properly gravitate downwardly.

REFERENCES:
patent: 4725703 (1988-02-01), Park
patent: 4742202 (1988-05-01), Campbell et al.
patent: 5315086 (1994-05-01), Pressouyre
patent: 5667714 (1997-09-01), Cho
patent: 5672291 (1997-09-01), Han
WPI Abstract No. 96-148636/15 & JP 08037087 (Sharp) Jun. 2, 1996.

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