Unlatching device for latch of refrigeration chamber or the like

Details Unlatching device for latch of refrigeration chamber or the like Unlatching device for latch of refrigeration chamber or the like

1983-03-02

1985-07-23

Smith, Gary L.

Closure fasteners

Keepers

With movable dog, catch or striker

292DIG65, 292DIG71, E05B 1502

Patent

active

045305323

ABSTRACT:
An indoor unlatching device for latch device of a refrigeration chamber door, comprising an operation rod extending through a frame wall of the door and connected at its outer end to a latch support and a manipulation handle connected to the inner end of the operation rod by means of a pivot shaft and having a first contact surface and a second contact surface selectively contactable with a handle seat surface, the distance between said first contact surface and said pivot shaft being greater than the distance between said pivot shaft and said second contact surface. In the normal state, said first contact surface is held in contact with said handle seat surface to pull and hold said latch support on the outer surface of said frame wall. In the case of emergency, said handle is rotated to bring said second contact surface into contact with said handle seat surface to lift said latch support away from said outer surface of said frame wall, thereby to disengage said latch support from a latch of said latch device.
The unlatching device permits an easy unlatching operation with small force and, hence, a prompt unlatching and easy opening of the door.

REFERENCES:
patent: 416359 (1889-12-01), Cooley
patent: 1971401 (1934-08-01), Fuchs
patent: 2747906 (1956-05-01), Emmert
patent: 2762645 (1956-09-01), Bordner, Jr.
patent: 3024472 (1962-03-01), Hardenbrook

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