Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – With mounting or supporting means
Patent
1983-06-20
1985-10-08
Caun, Peter M.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
With mounting or supporting means
E05D 1526
Patent
active
045454175
ABSTRACT:
An overhead door, particularly intended for use in a structure having a wide opening, includes an upper section pivotally mounted by hinges to the header beam of the structure, and a taller lower section pivotally mounted to the bottom of the upper section by hinges. Guide tracks are mounted on the side door jambs of the building, and guide rollers are mounted adjacent each lateral side edge of the lower section arranged to be movably captured by the guide tracks during folding and unfolding of the door in opening and closing. A plurality of lift cables are connected at one of their ends to laterally spaced positions along the width of the lower door section and at the same height preferably above its vertical midpoint but below the point where the upper and lower sections are hinged together by a distance equal to or greater than the height of the upper section. The opposite ends of the lift cables are connected to a counterbalance.
REFERENCES:
patent: 2203264 (1940-06-01), Horstman
patent: 2274216 (1942-02-01), Sanders
patent: 2308585 (1943-01-01), Bowsher
patent: 3024838 (1962-03-01), Egleston et al.
patent: 3192992 (1965-07-01), Hasselmark
patent: 4026343 (1977-05-01), James
Caun Peter M.
Olson Oliver D.
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