Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Movably interconnected
Patent
1988-11-10
1991-10-29
Johnson, Blair M.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Movably interconnected
160236, E06B 348
Patent
active
050607111
ABSTRACT:
A modular door panel structure includes extruded metal upper and lower horizontally aligned rail members maintained in a generally parallel spaced apart relationship by vertically aligned end stiles and one or more intermediate mullions to define an open structural framework. A multi-component plastic-clad insulation pane is assembled into the framework with locking strips that fix each pane in position within the framework to provide a dimensionally stable, light-weight modular panel having a maintenance free exterior surface and a very high thermal insulation value relative to the traditional door. The modules are assembled by mating the end stiles and the intermediate mullions to one of the upper or lower rails, inserting the plastic-clad insulation panes between the upstanding stiles and mullions, and mating the other of the rails to the end stiles and mullions. Locking strips are wedged between the insulation panes and their adjacent rails, stiles, and/or mullions to fix the insulation panes in position relative the various frame members. The present invention advantageously provides a modular structure and method of assembly for a door in which a light-weight, low-maintenance door panel having superior insulation characteristics is provided in a time- and labor-efficient manner.
REFERENCES:
patent: 2931435 (1960-04-01), Neiseander
patent: 2993572 (1961-07-01), Rich
patent: 3063105 (1962-11-01), Hollands
patent: 3198242 (1965-08-01), Crosswell
patent: 3703061 (1972-11-01), Holland et al.
patent: 4008745 (1977-02-01), Bailey
patent: 4794972 (1989-01-01), Hormann
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