Abstract:
Example methods and systems to indicate the status of door operations are disclosed. An example door system includes a door panel having a leading edge to be moved in a travel direction between an open position and a closed position relative to the doorframe. The door panel to block the passageway when the leading edge is at the closed position. The door panel to unblock the passageway when the leading edge is at the open position. The example door system also includes a series of lights distributed along the travel direction proximate the doorframe. The example door system further includes a controller to switch the lights between a first state and a second state to provide a visual effect of movement corresponding to the operating status of the door system.
Abstract:
Example methods and systems to indicate the status of door operations are disclosed. An example door system includes a door panel having a leading edge to be moved in a travel direction between an open position and a closed position relative to the doorframe. The door panel to block the passageway when the leading edge is at the closed position. The door panel to unblock the passageway when the leading edge is at the open position. The example door system also includes a series of lights distributed along the travel direction proximate the doorframe. The example door system further includes a controller to switch the lights between a first state and a second state to provide a visual effect of movement corresponding to the operating status of the door system.
Abstract:
Example insulated pliable door panels or curtains include various internal vapor barriers. The vapor barriers have a relatively high water vapor transmission rate that inhibits water vapor from permeating through the door panel. With such vapor barriers, outer sheets of the door panel can be made of polyurethane or other tough materials that might have an inadequate water vapor transmission rate. In some examples, the vapor barrier encircles or encloses a thermally insulating pad. In some examples, the door panel includes a sleeve or pocket that holds the vapor barrier in place. Some examples include means for draining water that might condense within the door panel.
Abstract:
Systems and methods to retain and refeed door curtains are disclosed. An example door is disclosed that includes first and second tracks. The example door includes a retainer borne by the first track and an alignment guide associated with the first track. The example door also includes a curtain extending laterally between the first and second tracks. The curtain has a leading edge selectively movable between a closed position and an open position. The example door includes a primary projection borne by the curtain that is in guiding engagement with the retainer within the first track. The primary projection is dislodged from the track when the curtain is in the breakaway state. The example door includes a secondary projection borne by the curtain and arranged to travel outside of the alignment guide when the leading edge is traveling between the open position and the closed position.
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:
Example systems and methods for aligning roll-up door curtains are disclosed. An example door includes a roller that is rotatable about an axis. The door further includes a curtain having a wrapped section wrapped around the roller and an unwrapped section extending tangentially away from the wrapped section. The unwrapped section adjoins the wrapped section at a first point proximate a first end of the roller and at a second point proximate a second end of the roller. The axis is closer to the second point than to the first point when the curtain is at the intermediate position. In some examples, the door includes a guide member to guide the curtain on to the roller.
Abstract:
An example door includes first and second tracks. The example door includes a retainer borne by the first track and an alignment guide associated with the first track. The example door also includes a curtain extending laterally between the first and second tracks. The curtain has a leading edge selectively movable between a closed position and an open position. The example door includes a primary projection borne by the curtain that is in guiding engagement with the retainer within the first track. The primary projection is dislodged from the track when the curtain is in the breakaway state. The example door includes a secondary projection borne by the curtain and arranged to travel outside of the alignment guide when the leading edge is traveling between the open position and the closed position.
Abstract:
Systems and methods to retain and refeed door curtains are disclosed. An example door is disclosed that includes a track and a curtain that includes a leading section. The curtain is to be in at least one of a breakaway state or a normal state, and in at least one of a folded condition or an unfolded condition while in the breakaway state such that: (a) in the normal state, a lateral section in an area proximate the leading section is in guiding engagement with the track; (b) in the breakaway state while in the folded condition, the lateral section in the area proximate the leading section is dislodged from the track and folded over onto the main section to define an enfolded space; and (c) in the breakaway state while in the unfolded condition, the lateral section in the area proximate the leading section is dislodged from the track but not folded over onto the main section. The example door also includes an unfolder to be in a position to engage the lateral section proximate the enfolded space as the leading section moves toward an open position while the curtain is in the folded condition.
Abstract:
Example insulated pliable door panels or curtains include various internal vapor barriers. The vapor barriers have a relatively high water vapor transmission rate that inhibits water vapor from permeating through the door panel. With such vapor barriers, outer sheets of the door panel can be made of polyurethane or other tough materials that might have an inadequate water vapor transmission rate. In some examples, the vapor barrier encircles or encloses a thermally insulating pad. In some examples, the door panel includes a sleeve or pocket that holds the vapor barrier in place. Some examples include means for draining water that might condense within the door panel.
Abstract:
Example insulated pliable door panels or curtains include various internal vapor barriers. The vapor barriers have a relatively high water vapor transmission rate that inhibits water vapor from permeating through the door panel. With such vapor barriers, outer sheets of the door panel can be made of polyurethane or other tough materials that might have an inadequate water vapor transmission rate. In some examples, the vapor barrier encircles or encloses a thermally insulating pad. In some examples, the door panel includes a sleeve or pocket that holds the vapor barrier in place. Some examples include means for draining water that might condense within the door panel.