Abstract: An example of a vertically operating door includes a flexible panel comprising two pliable sheets of material with a plurality of pads or mats of thermal insulation between the two sheets. In some examples, a plurality of horizontally elongate baffles made of pliable strips of material are installed between the two sheets. The baffles effectively divide one large interior volume between the sheets into more manageable smaller volumes or chambers. The baffles restrict the air between the sheets from being forced to the bottom of the panel as the panel ascends and bends across an overhead roller. Without the baffles and smaller chambers, the panel sheets in the area near the bottom of the panel would tend to bulge outward as the door opens.

Abstract: An example of a vertically operating door includes a flexible panel comprising two pliable sheets of material with a plurality of pads or mats of thermal insulation between the two sheets. In some examples, a plurality of horizontally elongate baffles made of pliable strips of material are installed between the two sheets. The baffles effectively divide one large interior volume between the sheets into more manageable smaller volumes or chambers. The baffles restrict the air between the sheets from being forced to the bottom of the panel as the panel ascends and bends across an overhead roller. Without the baffles and smaller chambers, the panel sheets in the area near the bottom of the panel would tend to bulge outward as the door opens.

Abstract: A horizontal side-moving door with a side-winding curtain or horizontally translating panel includes a breakaway brace that helps hold a relatively rigid leading edge of the curtain or panel in a substantially vertical orientation. Should a forklift accidentally strike the leading edge of the curtain or panel, a replaceable shear pin incorporated in the brace breaks away to release the leading edge, thus protecting the edge from damage. Although the shear pin can break into two or more pieces, the brace includes means for holding the pieces in place and preventing them from falling and hitting anything underneath the pin. Although with some limitations, the door is still operational even while the pin is broken.

Abstract: A method for recognizing potential faults of one or more remote body detectors of a door can be applied to a wide variety of conventional detectors that may not necessarily have a self-monitoring feature themselves. The method may be counter-based, timer-based or a combination of the two. In some embodiments, the method involves comparing the behavior of a detector to that of another detector at the door or to the activity of another door-related event, such as the door opening or closing. In some cases, the activity of a single detector is compared to a predetermined acceptable range of activity over a given period.

Abstract: A restraint for a parked swap body container includes a face stop that can be selectively positioned to a restraining position and a release position. In the restraining position, the face stop is adapted to engage a front face of the container to limit the extent to which the parked container can move away from an edge of a truck loading dock. In The release position, the face stop allows a truck to remove the container from the loading dock. The restraint may also include a frame that can be repositioned longitudinally to accommodate containers of various lengths. A fine adjustment can be added to further limit horizontal movement of the container. And an optional bottom support could engage the bottom of the container to provide even more support.