Closure latch

Details Closure latch Closure latch

1987-10-26

1989-05-02

Gall, Lloyd A

Closure fasteners

Bolts

Swinging and camming

292197, 292200, 292204, 292DIG9, 292DIG20, 292DIG38, E05C 304

Patent

active

048262226

ABSTRACT:
A latch having a base and a latch plate pivoted thereto, the base being adapted for installation on a closure frame and the latch plate being adapted to overlie the closure. The latch plate is pivotally mounted on the base to swing between an unlatched position in which the closure can be opened, and a latched position in which the closure cannot be opened because the latch plate overlies it. A handle pivotally mounted on the base swings the latch plate between the open and closed positions. At least one of the base and latch plate are made of an elastically deformable material. The latch plate is moved to the latching position by the camming action of the handle; and when the latch plate has moved only part way toward the fully latched position, abutment surfaces on the base and latch plate come into contact with each other. Thereafter, as the handle moves to the fully latched position, the resilient material of the base and/or latch plate is resiliently deformed, so that when the handle reaches the fully latched position, the deformation of the resilient material will cause the latch plate to exert a force on the handle, thereby increasing the friction between the latch plate and the handle to prevent accidental or unauthorized movement of the handle toward the unlatched position.

REFERENCES:
patent: 820868 (1906-05-01), Hinchliffe
patent: 1613315 (1927-01-01), Dols
patent: 1642512 (1927-09-01), Schrader
patent: 1691485 (1928-11-01), Kirk
patent: 1841890 (1932-01-01), Hannon
patent: 3645573 (1972-02-01), Strang
patent: 3969788 (1976-07-01), McCullough
patent: 3991437 (1976-11-01), Friederichs
patent: 4230351 (1980-10-01), Bisbing
patent: 4305612 (1981-12-01), Hunt et al.

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