Self-closing door hinge

Details Self-closing door hinge Self-closing door hinge

E - Fixed Constructions

05

F

16/27

E05F 1/00 (2006.01) E05F 1/06 (2006.01)

Patent

CA 1075418

ABSTRACT A self-closing hinge assembly comprises first and second pivotally connected leaves, the second leaf having a hollow-cylindrical part mounted upon a hinge pin secured to the first leaf, and the hollow cylindrical part being mounted for limited axial and rotational movement relative to the hinge pin. A series of arcuate slots respectively engages with a series of projections, such projections extending either outwardly from the hinge pin or inwardly from the inner surface of the hollow cylindrical part. The slots are complementarily provided in the surface of the hinge pin or in the hollow cylindrical part, at least a part of each slot being helically formed to provide a camming action upon the projection associated there- with, in order to simultaneously axially move the second leaf member relative to the first leaf member upon relative rotational motion between the leaf members over the distance of travel of the projections along the helically formed portions of the slots. Thus, the invention avoids the dis- advantages inherent in spring-loaded and hydraulically operated door closers, which tend to be either too light for many doors or too stiff and heavy.

306366

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