Linkage assemblies for horizontally and vertically pivotal closu

Joints and connections – Articulated members – Plural distinct articulation axes

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Details

49248, 49252, E05D 1530

Patent

active

050372300

ABSTRACT:
Linkage assemblies for doors or windows, in which the leaf frame is partly lap-jointed to the fixed frame, where an upper and lower assembly are respectively fixed in fillisters, both assemblies of which include an auxiliary compass arm. The upper and lower assemblies are each also fitted with a second compass arm of which one extremity is mounted slidingly in the lower and upper rail of the fixed frame. The configuration of the assemblies enable the offsetting, in the course of French opening, the rear stile of the leaf frame in the relation to the rear stile of the fixed frame. The doors or window, which can be of considerable size and weight, nevertheless are securely supported for the aforementioned movement, including movement about a vertical axis through an angle of opening of more than ninety degrees.

REFERENCES:
patent: 2921819 (1960-01-01), Rifkin
patent: 3797169 (1974-03-01), Armstrong
patent: 4364201 (1982-12-01), Taylor
patent: 4703540 (1987-11-01), Davis
patent: 4718144 (1988-01-01), Buckley
patent: 4833754 (1989-05-01), Yang
patent: 4838111 (1989-06-01), Schmidt

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