Automatic bimetal safety latch for self-cleaning oven doors

Details Automatic bimetal safety latch for self-cleaning oven doors Automatic bimetal safety latch for self-cleaning oven doors

1993-09-02

1995-05-30

Iones, Larry

Stoves and furnaces

Stove doors and windows

Latches

126273R, 292DIG69, 292DIG66, 292113, F24C 1504

Patent

active

054193052

ABSTRACT:
An oven safety door latch has a pair of elongated latch arms pivotably connected to each other and to a base at a point intermediate their length. The arms project beyond the base and have end portions with opposed latching noses. A pawl is rotatably mounted on the base adjacent an end of the arms and has a blocking element engageable with the arms. A spring biases the latch arms and thereby the noses towards each other, and a stop element limits this movement of the noses towards each other. A thermally responsive element is operatively connected to the pawl to rotate it between a first position in which the blocking element is spaced from the arms, and a second position in which the blocking element is engaged with the end portions of the arms to limit their movement and thereby the movement of the noses away from each other to maintain the latch in engagement with the oven door.

REFERENCES:
patent: 3406677 (1968-10-01), Anderson
patent: 3416515 (1968-12-01), Mertler
patent: 3438666 (1969-04-01), Erickson
patent: 3540767 (1970-11-01), Siegel
patent: 3638638 (1972-02-01), Phifer
patent: 4133337 (1979-01-01), Shea
patent: 4136667 (1979-01-01), Lewis
patent: 4163443 (1979-08-01), Peterson
patent: 4364589 (1982-05-01), Watson
patent: 4663505 (1987-05-01), Drake
patent: 4862870 (1989-09-01), Fox
patent: 5220153 (1993-06-01), Malone et al.

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