Four-bar linkage hinge with improved opening mechanism

Details Four-bar linkage hinge with improved opening mechanism Four-bar linkage hinge with improved opening mechanism

1993-07-22

1994-12-20

Bradley, P. Austin

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

Hinge

Having plural hinge axes

16288, E05D 1532

Patent

active

053736095

ABSTRACT:
A four-bar linkage hinge comprises two fastening elements (11, 12) with a first (14) and a second link (13) pivoted by their ends, respectively, to each fastening element (11, 12). The first link (14) has an extension (20) which rests on a free arm (25) of a spring (21) which reacts with its other end (24) on one of the two fastening elements, and which exerts pressure on said extension (20) in order to rotate the link to shift the hinge from a nearly closed to a closed position. The arm (25) bears a cam surface with a raised area (28) which is traversed by said extension (20) when the hinge is in the nearly open position, to permit the release of the spring (21) on continuation of the opening movement and push the hinge open.

REFERENCES:
patent: 3744086 (1973-07-01), Salice et al.
patent: 4226001 (1980-10-01), Salice

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