Automatically interlockable hinge

Details Automatically interlockable hinge Automatically interlockable hinge

1977-12-29

1979-05-08

Schroeder, Werner H.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Sash balances

Spring

182 24, 403 92, E05D 1110

Patent

active

041528107

ABSTRACT:
A lockable hinge for hingedly connecting structural members of a hinged assembly such as a folding ladder comprises two hinge parts which are pivotable with respect to a common hinge axis, a first hinge part being formed with a cylindrical protruding portion journalling in a cylindrical bore formed in the second hinge part. A locking member slidingly mounted on the first hinge part is controlled by a resiliently urged ear-shaped pivoting link adapted for selective stop-engagement with an actuating lever pivotingly mounted on said first hinge part. Pre-setting means, including a rotatable hinge cover which comprises releasing members adapted for cooperation with corresponding members attached to said actuating lever are provided for selectively disengaging said link from said stop-engagement with said actuating lever, whereby causing said locking member to move into a desired opening which is formed in said second hinge part and which opens in said bore so as to lock automatically the hinge in the pre-set angular position.

REFERENCES:
patent: 3655012 (1972-04-01), Hoffman et al.
patent: 3955240 (1976-05-01), Schuh et al.

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