Adjustable safety interlock for microwave ovens

Details Adjustable safety interlock for microwave ovens Adjustable safety interlock for microwave ovens

1978-03-20

1980-05-06

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

200153T, 292DIG69, H05B 906, H01H 316, E05C 1310

Patent

active

042019010

ABSTRACT:
An adjustable safety interlock is disclosed for microwave ovens or other high voltage electrical apparatus. The interlock is actuated by the movement of a counterbalance arm when the door is opened. The amount of movement necessary to actuate the interlock is altered by changing the position of the interlock switch relative to the counterbalance arm. The interlock switch is pivotally mounted on the side of the apparatus for this purpose. Pivotal movement of the interlock towards and away from the counterbalance arm is achieved by a finely threaded bolt. The bolt is biased in the direction of greater safety by a compression spring. The interlock is readily accessible during production and thereafter only by authorized personnel.

REFERENCES:
patent: Re28249 (1974-11-01), Estrem
patent: Re28822 (1976-05-01), Fritts
patent: B549964 (1976-02-01), Tippy et al.
patent: 3188441 (1965-06-01), Ojelid
patent: 3496316 (1970-02-01), Foerstner
patent: 3715552 (1973-02-01), Umezu et al.
patent: 3815064 (1974-06-01), Maier et al.

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