Door assembly for a temperature controlled storage structure
OwnerPatrick F. Tierneyinventor
Life of this patent
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Abstract
An overhead door assembly is disclosed having a pair of rails each with upright and horizontal segments. Pivot supports at the lower ends of the upright segments permit the rails and a door thereon to move into and out of the doorway of a temperature controlled storage structure. A control shaft imparts movement to the rails by arm assemblies each including pivotally coupled arms to tilt the rail segments and door thereon between open and closed positions. The door is held in a closed position by an over-center relationship in each arm assembly. The control shaft is manually actuated while modified rail positioning arrangement includes a pneumatic cylinder and a valve control for rail positioning. Seals about the door and between panels of the door render the storage structure airtight.
Claims11
An overhead door assembly for a temperature controlled storage structure for perishables having a door opening and comprising,
- rails including upright and horizontal segments, a door comprised of panels entrained on said segments for abutment with the structure adjacent said door opening to close same, resilient means located between the door perimeter and that part of the structure defining said doorway,
- pivot means supporting said rails in said storage structure permitting displacement of said rails and their upright and horizontal segments and said door about a horizontal axis away from said door opening,
- rail positioning means coupled to said rails;
- and
- control means for actuating said rail positioning means.
A door assembly for a temperature controlled storage structure having a doorway, said assembly comprising,
- a door comprising panel segments and equipped with rollers, rails having upright segments adjacent said door and on which said rollers are entrained,
- pivot means supporting said rails for positioning same about a horizontal axis for travel toward and away from said doorway during opening and closing of said door,
- rail positioning means coupled to said rails for positioning the upright rail segments and said door when in place thereon toward and away from said doorway,
- said door when in place on said upright rail segments positionable about said axis into engagement with that portion of the storage structure defining said doorway,
- resilient means effecting a seal between said door and said storage structure, and
- control means for actuating said rail positioning means.
An overhead door assembly for a temperature controlled storage structure for perishables having a door opening and comprising,
- rails including upright and horizontal segments,
- a door entrained on said segments for abutment with the structure adjacent said door opening to close same, said door comprised of panel shaped segments, hinge means joining said panel shaped segments in edge-to-edge fashion, seals disposed along each of said segments for engagement with an adjacent panel shaped door segment to effect an airtight segmented door,
- pivot means supporting said rails in said storage structure permitting displacement of said rails and said door about a horizontal axis away from said door opening,
- rail positioning means coupled to said rails;
- and
- control means for actuating said rail positioning means.
Dependencies are inferred from the claim text.