Releasable panel for overhead door

Details Releasable panel for overhead door Releasable panel for overhead door

1995-04-21

1996-12-17

Johnson, Blair

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

With mounting or supporting means

160236, E05D 1516

Patent

active

055843336

ABSTRACT:
A panel member for use in an overhead door assembly has an outer frame defining a panel slot, with a swingable panel seated in the slot; the swingable panel is hingedly mounted to the outer frame by a hinge, retainers on the outer frame hold the swingable panel in the panel slot, however, under impact the panel is released from the retainers, whereafter it is free to pivot or swing about the hinge; after removal of the impact the swingable panel is snapped back into the retainers; the swingable panel thus accommodates impact forces which would otherwise dislodge the door from the track assembly.

REFERENCES:
patent: 974699 (1910-11-01), Ogden
patent: 2122532 (1938-07-01), Mims et al.
patent: 2629435 (1953-02-01), Dadswell
patent: 2815808 (1957-12-01), Eckel
patent: 3140508 (1964-07-01), Switzgable
patent: 3516469 (1970-06-01), McDonald
patent: 3870391 (1975-03-01), Nims
patent: 4016920 (1977-04-01), Shepard
patent: 4122887 (1978-10-01), Dussault et al.
patent: 4378043 (1983-03-01), Sorenson
patent: 4676293 (1987-06-01), Hanssen
Material Handling Engineering, Mar. 1995, "A Door Built to Take the Punches", p. 19.

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