Safety release latch

Details Safety release latch Safety release latch

1990-07-25

1991-06-18

Nicholson, Eric K.

Closure fasteners

Bolts

Hooked end

292113, 292DIG38, 292DIG49, 220315, E05C 314

Patent

active

050244710

ABSTRACT:
A latch assembly (12) is adapted for use with a container having a base portion (11) and a cover (10) affixable thereto by the latch assembly (12). The base portion (11) has projections (17) extending from its sidewall and the cover (10) has lugs (14) extending therefrom. A latch plate (19) has laterally spaced ribs (25) between which an upper lever bar (28) is pivotally connected to define an upper pivot point. Ribs (45) on the upper lever bar (28) are adapted to snap over the lugs (14) to attach the latch assembly (12) to the cover (10). The lower end of a lower lever bar (30) is also pivotally connected between the ribs (25) to define a lower pivot point. The upper edge of the lower lever bar (30) is hinge connected (33, 34) to the lower edge of the upper lever bar (28) with the centerline of the hinge (33, 34) being laterally offset from a plane defining both the upper and lower pivot points. The bottom of the latch plate (19) is adapted to releasably engage the projections (17) extending from the base portion (11) to latch the cover (10) thereto. As the latch plate (19) is swung to and from the latched and unlatched position, the hinge (33, 34) swings over center with respect to the plane of the upper and lower pivot points.

REFERENCES:
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patent: 3672403 (1972-06-01), Wilson et al.
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patent: 3700301 (1972-10-01), Boeck
patent: 3709538 (1973-01-01), Seitz et al.
patent: 3713681 (1973-01-01), Worley
patent: 3730576 (1973-05-01), Schurman
patent: 3822905 (1974-07-01), Bell
patent: 4232890 (1980-11-01), Hoen
patent: 4244612 (1981-01-01), Schurman
patent: 4249760 (1981-02-01), Conley
patent: 4262607 (1981-04-01), Krebs
patent: 4502715 (1985-03-01), Lundblade
patent: 4691840 (1987-09-01), Ferbrache

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