Abstract: A multi-curtain assembly includes: first and second curtain segments, each having a leading edge and side edge; an edge fastener having first and second fastener portions proximate the side edge of the first and second curtain segments, respectively, the first fastener portion of the first curtain segment being connectable to the second fastener portion of the second curtain segment to produce a seam as the curtain segments are moved to their closed positions; a motor driving one or more of the barrel assemblies; a synchronizing mechanism synchronizing the barrel assemblies. An overlap fastener, arranged proximate edges of the curtain segments in an overlap region, has aligning portions that align as the side edges are brought into alignment by the edge fastener, to mask at least one side of the fastener seam as the fastener portions are connected to each other.

Abstract: A slatted door includes a plurality of interengaged slats, and end members arranged at ends of respective slats. The end members and the slats are configured and arranged so that, when the slats are engaged with one another and with respective end members, at least one lateral reinforcement impact distribution structure is formed. The impact distribution structure is configured to absorb, distribute and/or redirect impact force in a direction along the length of the slats.

Abstract: A slatted door includes a plurality of interengaged slats, and end members arranged at ends of respective slats. The end members and the slats are configured and arranged so that, when the slats are engaged with one another and with respective end members, at least one lateral reinforcement impact distribution structure is formed. The impact distribution structure is configured to absorb, distribute and/or redirect impact force in a direction along the length of the slats.

Abstract: A fire door assembly is provided for covering a structure opening in a sidewall of a structure. The fire door assembly has a roller assembly to be mounted to a portion of the structure defining a portion of the structure opening and a curtain panel disposed on the roller assembly. The curtain panel is operable between a retracted position where the curtain panel is wound onto the roller assembly and an extended position where the curtain panel is unwound from the roller assembly to cover the structure opening. The curtain panel includes first and second panel portions with mutually opposing edge portions in a closed position. A fastener is provided to releasably attach the first and second panel portions to each other. The first and second panel portions are separable from each other in response to an egress force exerted thereon to form an egress through the curtain panel. Upon relaxation or removal of the egress force, the panel portions return to the closed position to close the egress.

Abstract: A guide member for a coiling door or curtain assembly, including a rigid, hollow elongate member having a first wall, a second wall opposing the first wall, and a third wall which is perpendicular to the first and second walls. The first, second, and third walls are arranged to form an internal cavity of the elongate member. The internal cavity has an opening running in a direction of a length of the elongate member, along a side of the elongate member opposing the third wall. A seal is positioned in the internal cavity and attached to the second wall. The first and/or second walls have a stepped portion at the opening of the internal cavity which decreases a width of the opening by decreasing a distance between the first and second walls near the opening.

Abstract: A drive arrangement for a roller curtain covering an opening defined by a frame includes a drum mounted horizontally across one side of the opening, a pair of hollow drive shafts fixed against rotation in opposite ends of the drum, and a pair of coaxial tension shaft portions fixed to the frame and received through respective hollow drive shafts. At least one coil spring is associated with each tension shaft portion, each spring having a first end fixed to a tension shaft portion and a second end fixed to the drum. A pair of drive motors are operatively connected to respective hollow drive shafts for synchronously rotating the drive shafts in order to coil a roller curtain on the drum.

Abstract: A two-sided fire door system includes a horizontal head track having a first end and a second end; a first door including a plurality of interconnected panels suspended vertically from the head track by trolleys arranged for horizontal movement between the first end and a point remote from the first end; a second door including a plurality of interconnected panels suspended vertically from the head track by trolleys arranged for horizontal movement between the second end and a point remote from the second end; and an endless chain in an elongate loop having a first end looped around a drive sprocket and parallel first and second runs fixed to respective first and second lead trolleys. A drive motor rotates the drive sprocket in opposite rotational directions to open and close the doors, the motor being blocked against rotation when the motor is not operating. A suspended weight closes the doors automatically by means of a cable attached to one of the lead trolleys when the blocking is released.

Abstract: A rolling door assembly for selectively covering an opening in a building includes a shutter roller rotatable about a substantially horizontal axis and a flexible panel windable on and off the roller for movement into retracted and extended positions, respectively. The flexible panel defines an upper portion having a first width and a lower portion having a second width less than the first width. At least one pass door frame is hingedly securable proximate a lateral side of the opening for movement between a first position, in which the pass door frame extends in a substantially transverse direction relative to the opening and a second position, in which the pass door frame is substantially aligned with the at least one sidewall.

Abstract: An accordion fire door is provided including an accordion member having interlocking panels formed of a fire retardant or fire proof material, a guide member positioned on at least one side of the accordion member for guiding the accordion member during movement between an opened position and a closed position, end locks arranged at interconnected ends of adjacent panels for maintaining panel contact and alignment, and a releasing member connected to the accordion member for releasing the accordion member in response to a predetermined condition of at least one of heat, fire, smoke, manual initiation and a drive. The panels are self hinged along the entire interlocking sides.

Abstract: A fire door system comprising first and second fire door assemblies each assembly including a fire door, a temperature sensing device and an operator. The operators of each of the assemblies are electrically interconnected such that when the fire doors simultaneously close when either (a) the temperature sensing device senses that the ambient temperature exceeds a predetermined value or (b) the circuit between the operators of the assemblies is deactivated.

Abstract: A rolling door assembly for selectively covering an opening in a building includes a shutter roller rotatable about a substantially horizontal axis and a flexible panel windable on and off the roller for movement into retracted and extended conditions, respectively. The flexible panel defines an upper portion having a first width and a lower portion having a second width less than the first width. At least one pass door frame is hingedly securable proximate a lateral side of the opening for movement between a first position, in which the pass door frame extends in a substantially transverse direction relative to the opening and a second position, in which the pass door frame is substantially aligned with the at least one sidewall, the pass door frame defining a passage therethrough and a substantially vertical channel for guiding an edge region of the flexible panel lower portion as it is extended.

Abstract: A resettable fail-safe fire door release mechanism which allows normal powered operation of a fire door is disclosed. A solenoid having a first open state in the absence of an applied electric current and a second closed state in the presence of an applied electric current is incorporated into the motor-operator unit of an overhead door. Brake actuator utilizes the spring force of a normally disengaged brake to keep the brake actuator in a first position. The plunger of the solenoid acts through the brake actuator in opposition to the spring so that energizing the solenoid overcomes the force of the spring, moving the brake actuator, and engaging the brake; deenergizing the solenoid causes the spring to again disengage the brake. A normally closed switch having a mechanical actuator is wired in series with the solenoid. The melting of a fusible link releases a spring loaded plunger which depresses the actuator opening the switch.