Load-responsive microwave oven turntable

Details Load-responsive microwave oven turntable Load-responsive microwave oven turntable

1988-11-30

1989-12-05

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055R, 219518, 108 20, 108142, 99443R, H05B 678

Patent

active

048854468

ABSTRACT:
A microwave oven turntable having a load-responsive mechanism for self-activating the turntable upon the placement of foodstuff thereon. The turntable includes a base assembly having a planar bottom and upwardly extending sides to form a base interior in which a drive shaft is rotatably driven by a coil spring. A tabletop is coupled to the drive shaft for rotation therewith, but the rate of rotation is determined by the cyclical motion of a governor. The load-responsive mechanism includes a resilient brake member which is aligned in a governor-locking position. The tabletop is linked to the brake member by an actuator and the brake member is sufficient rigid to maintain the actuator and tabletop in a slightly uplifted condition when in the governor-locking position. The placement of foodstuff on the tabletop, however, provides a gravitational force which displaces the brake member into a governor-releasing position in spaced apart relation to the governor.

REFERENCES:
patent: 3300615 (1967-01-01), Smith
patent: 4330696 (1982-05-01), Pomeroy et al.
patent: 4427876 (1984-01-01), Bonacorsi
patent: 4456805 (1984-06-01), Jorgensen et al.
patent: 4625087 (1986-11-01), Jorgensen et al.
patent: 4629846 (1986-12-01), Dilyard
patent: 4694132 (1987-09-01), Liu
patent: 4724292 (1988-02-01), Ichikawa
patent: 4746781 (1988-05-01), Dalquist, III et al.

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