Title: Automatically interlockable hinge

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.

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Other info:

Inventors: Martinez, Ginez (Noisy le Sec, FR)

Application Number: 865571
Filing Date: 1977-12-29
Publication_date: 1979-05-08
Assignee: Salanon S.A. (Romainville, FR)
Primary Class(es): 16/325 182/24, 403/92
Other Classes:
US Patent Ref:

3655012	Apr, 1972	Hoffman et al.	182/163.
3955240	May, 1976	Schuh et al.	16/144.

Other Refs:
Primary Examiner: Schroeder, Werner H.
Assistant Examiner: Cohen, Moshe I.
Attorney: Cushman, Darby & Cushman