Abstract: A foldable door includes a track and a number of foldable door leaves. Each door leaf includes a compartment and two screw holes. Each door leaf is carried by a slider slidably received in the groove. The compartment of each door leaf receives a suspension member that includes a stem having an upper end connected to the slider to move therewith. Two resilient arms extend outwardly and upwardly from the stem and away from each other. Each resilient arm terminates at a positioning member located on top of an associated screw hole of the associated door leaf. Each positioning member includes a hole, and a fastener extends through the hole of each positioning member and the associated screw hole. The resiliency of the resilient arms absorbs a portion of impact to the suspension devices during folding and unfolding of the foldable door.

Abstract: A novel deployable and stackable accordion shutter system includes an overhead header presenting a track and a laterally disposed abutment surface. The system includes a plurality of trolley supported shutter members which are rotatable about a vertical axis adjacent one edge portion thereof. The system further includes a sill having a guide slot which is disposed beneath the track in alignment therewith. The sill also has an abutment surface disposed in alignment with the abutment surface of the header. The shutter members carry abutment contacting elements disposed for coming into contact with the abutment surfaces to rigidify the structure when the shutter system is deployed. Additional abutment surfaces are provided adjacent the edge of the shutter which is supported by the trolley for further strength. The shutter members are specially configured to facilitate close stacking of the system.

Abstract: For mounting a folding/sliding door, a support is connected to a hinge arm of a hinger mounted in the upper outer end area of an outer door leaf in a position in which the side of the retaining part that attaches to the hinge arm is located in the extension of the bearing part. The folding/sliding door can then be joined by its inner leaf via hinges, preferentially standard double-link hinges, to a side panel of the body. The pre-fitted support, already connected to the hinge arm of the outer door leaf, can then be introduced and locked into the guide channel together with its carriage part. First, the carriage part is swiveled through 90 degrees around the retaining part so as to position the carriage part within the longitudinal slot of the guide channel. The carriage part is then locked in place by turning the hammer-shaped head through 90 degrees by means of its supporting pin.

Abstract: A collapsible doorplate assembly includes a fixing member secured to a wall, a length-adjustable connecting device having a first end securely connected to the fixing member and a second end, a number of pivotal connecting members, and a number of leaf plates. Each two adjacent leaf plates are pivotally connected by one of the pivotal connecting members. An innermost one of the pivotal connecting members, which is nearest to the fixing member, is connected between the length-adjustable connecting device and an innermost one of the leaf plates which is nearest to the fixing member. The length-adjustable connecting arrangement includes an engaging member and a movable member. The engaging member includes a first end securely engaged with the fixing member and a second end. The movable member includes a first end slidably engaged with the second end of the engaging member and a second end in pivotal connection with the innermost pivotal connecting member.

Abstract: A door edge guard for mounting to the leading edges of a pair of bifold doors has a guard body. The guard body has a rear wall, a front wall spaced apart from the rear wall and resiliently deformable panels extending between the front and rear walls. The front wall, rear wall and side panels define a crush zone therebetween. Weather stripping extends forwardly from the front wall to provide a weather barrier.

Abstract: Water shield panels which are used in a car wash. The panels prevent water from dripping onto a header over the exit of a car wash. The exit is covered by a door which is made of plastic strips. The water shield panels capture the water during the wash. After the wash and before the car exits the car wash, the panels and the door are opened to avoid dripping water or soap onto the exiting car and to allow it to exit. The panels and the door are folded open by a motor and push/pull rods. The plastic strips making up the door are covered with carpet at their lower ends to prevent their scratching of a car when it exits when the motor is not functioning.

Abstract: An adjustable hanging support mechanism for a folding panel assembly enclosure which comprises a plurality of folding panels and end posts secured thereto and which fold in an accordion fashion while being suspended by the support mechanism along a top end thereof. The hanging support mechanism has a support rod which is connected at a top end to a displaceable carriage which is engaged in a support rail. The support rod has a plurality of spaced fastener engaging apertures extending along a connecting section thereof. The apertures are configured to receive a fastener element in engagement therewith. At least some of the panels are provided with connecting cylinders to receive at least a connecting section of an associated one of the support rods in axial rotation therein. Fastener elements are associated with the connecting cylinders to permit interconnection with a selected one of the fastener engaging apertures of an associated support post to provide vertical height adjustment of the enclosure.

Abstract: A improved folding shower door assembly and related method of manufacture therefor are disclosed in which rigid panels with living hinges therebetween are supported by a horizontal track, with the shower door assembly mating at both sides thereof by removably inserting plastic closure channels at the sides of the shower door into retaining members mounted on opposing walls. The shower door assembly consists essentially of a plurality of semi-rigid panels which may be molded together in a single molding operation or by assembling panels together, with living hinges being located intermediate each adjacent pair of semi-rigid panels. A bathtub trim member located on top of the outer lip of the bathtub functions to retain the bottom edge of the shower door assembly, thereby preventing it from moving out over the edge of the bathtub and retaining water within the bathtub.

Abstract: A shutter blade comprising a center portion having a receiving and a hooking end. The receiving end has a first opening which connects with a hooking end of another shutter blade. The first opening surface fits into and conforms with the first opening and there is continuous contact therebetween when the hooking end of the other shutter blade and the first opening surface are in a folded state. Alternatively, whether the first opening surface is of opposite shape as the hooking end surface or not, the receiving end can have a second opening separated from the first opening by a common wall. The shutter blade contacts a track mechanism through the second opening. Such shutter blades can be used in a shutter blade assembly in which a plurality of shutter blades are foldably connected in series and movably connected to the track mechanism.

Abstract: An operable partition seal assembly for use with an operable partition to provide an air-tight seal between the operable partition and a carpeted floor. The seal assembly includes a first sealing strip attached to an underside of an operable partition drop seal. The seal assembly also includes a second sealing strip installed in the carpeted floor beneath the operable partition when it is in a wall forming position. The second sealing strip includes a thin, upwardly extending sealing portion which is disposed within the carpet and which sealingly engages the first sealing strip to provide a sound barrier seal. The second sealing strip also preferably includes a mechanism for retaining the upwardly extending sealing portion in an operational alignment.

Abstract: A guide rail has running surfaces separated by a longitudinal slit and a load bearing member carried by the same so that it may slide but not rotate and on it a closing element, preferably a door of a folding sliding door, is attached. In order to be able to secure the closing element carried by the load bearing member to the guide rail simply and quickly, the load bearing member has an elongated carriage part running in the guide rail and having a width corresponding to the longitudinal slit in the guide rail. In a hole, at a right angle to the guide rail, in the load bearing member a pin is mounted so that it may rotate but not move axially and adjacent to carriage part it has a T-head, whose width is less than the width of the longitudinal slit but whose length is greater than it. The pin is able to be locked to the load bearing member in a setting in which the head bears against the running surfaces.

Abstract: An anti-float system for operable partitions in a movable wall system. The anti-float system includes first and second camming assemblies, each including a trolley camming surface, cooperatively positioned along the operable partition track. Preferably both of the trolley camming surfaces are spring biased to camming positions where they define a passageway through which a portion of the trolley passes when the trolley moves along the track. The passageway is narrower than the width of the trolley portion. When the trolley portion enters the passageway while traveling in the wall extending direction, the trolley portion engages the trolley camming surfaces and forces the surfaces outward from their camming positions against a resistance provided by the biasing springs in order for the trolley to pass. The camming assemblies are also movable from a camming alignment to a retracted alignment when the trolley portion travels in the wall stacking direction through the passageway.

Abstract: A reinforced, accordion-type folding shutter is formed of a substantial number of generally flat, narrow slats that are pivotally joined together, edge-to-edge, for folding and opening the shutter. The adjacent edges of the slats are formed with integral tubes extending substantially their full lengths, but with each of the tubes being notched to form relatively short, co-axially aligned, spaced apart loops. The loops of each pair of adjacent slat edges are interfitted and co-axially aligned and a rigid rod is extended through the aligned loops to form a hinge pin for pivoting each pair of slats relative to each other and, simultaneously, to form, with the surrounding tube loops, a rigid, composite reinforcing bar. A bar is formed at each of the adjacent edges of the slats so that a series of relatively closely spaced bars are formed along the width of the shutter. The bars reinforce the shutter against penetration by wind hurled objects or other forcibly applied impacts.

Abstract: A blade member for use in a shutter curtain assembly. The blade member is of a given height and has a top, a bottom, a first edge and a second edge. A first semi-cylindrical interlocking portion extends along the first edge. The first portion includes a pair of inwardly-directed tangs which extend from opposite sides of the semi-cylinder. A second semi-cylindrical interlocking portion extends along the second edge and is sufficiently smaller in diameter than the first portion. A second interlocking portion of a succeeding blade member may be slidably inserted into the first interlocking portion. The second portion includes a pair of outwardly-directed tangs which abuttingly engage the inwardly-directed tangs of the first interlocking portion. A series of blade portions are thus interconnected and form a continuous shutter curtain which is selectively unfolded or retracted.

Abstract: An adjustable mullion is provided for forming a corner or joint between two building panels such as in the formation of shower enclosures, walls, partitions and the like. The mullion can be adjusted through an arc of up to 90 degrees in one orientation and can be inverted to provide a total of 180 degrees of movement. The mullion comprises two members which can be cooperatively interconnected before or after joinder to the panels. Each member includes an elongated barrel portion which is generally arcuate in cross-section. One of the barrels is sized for being received and retained within the other barrel to form an adjustable joint between the mullions.

Abstract: An electrically actuated, expandable wall jamb for an operable wall system. The expandable jamb includes a first wall section having an inward edge for connection to a stationary wall and an outward edge opposite the inward edge. The jamb also includes a second wall section slidably movable with respect to the first wall section. The second wall section includes a sealing edge for sealing engagement with a vertical structure and is movable between a retracted position in which the sealing edge is proximate the outward edge of the first wall section and a sealed position in which the sealing edge extends outward from the outward edge of the first section.

Abstract: This invention relates to a wind door assembly for a doorway. The wind door assembly preferably has a pair of strip curtain wind doors each having cooperating edge stiffeners to prevent wind from curling the lower inboard regions of the doors out of the plane of the doorway when the doors are closed while allowing an object to move the doors apart from one another so that the object can pass through the doorway without damaging either the object or the doorway.

Abstract: The improved folding door and door frame assembly includes a door frame having a horizontal top channel member adapted to receive a number of depending door slides, and a vertical side frame member below the channel member. The assembly also includes a folding door formed of an array of interconnected, parallel, vertically extending polyvinyl chloride slats arranged in side by side relation. The slats have small staple fibers substantially uniformly distributed throughout the body thereof to give the slats a translucent sandy appearance and feel. Each slat in the arry preferably is corrugated to provide a number of integral parallel segments. Each slat has an integral side folding hinge extending along the length of one side thereof and a hinge-receiving slot or groove along the length of the opposite side of the slat. The slats are interconnected through the side hinges and grooves.

Abstract: A panel for a multi-panel folding door includes a semi-rigid, transparent partition with insulating layers disposed on opposing sides thereof. A collapsible nose seal adjacent to a lateral edge of the panel and extending substantially the length thereof is adapted for engagement with another similar panel also having a collapsible nose seal to provide an interlocking, insulated seal between the panels when the door is closed while permitting the panels to be separated when the door is opened. A magnet in the collapsible nose seal of each panel is adapted for magnetic coupling to a metal plate in the other panel to provide a weather-tight, thermal insulating seal. Each of the insulating layers includes an aperture, with the apertures in mutual alignment to form a window in the panel.

Abstract: A hinge construction for joining panels of a foldable closure assembly, comprising a female hinge member including an elongated substantially hollow channel which defines in cross-section an inner concave surface extending along an arc of circle and a fulcrum element in a spaced apart relationship with the concave surface. A male hinge member is received in the elongated channel for pivotal movement about the fulcrum element.

Abstract: The invention comprises a mechanism for aiding in the closing of a bi-fold door, and for maintaining the door in a closed position, which includes a door frame having vertically spaced apart frame members, an upper horizontal frame member extending between said vertical frame members, the frame members defining an opening in a wall, a pair of bi-fold doors hinged together at adjacent edges adapted to at least partially close the opening, one of the doors of each pair being in a fixed position to pivot about points at the top and bottom thereof adjacent one of the vertical frame members, a guide and supporting track extending longitudinally along the length of the upper frame member, a roller member extending upwardly from the other of the inner doors into the track and being guided thereby in the track whereby the other of the doors at the free end thereof has sliding longitudinal movement in the track and the pair of doors may move from an open position in which they are in a generally V-shape into a closed

Abstract: A movable wall system used to divide a large room into small rooms has a train of wall panels connected by hinges. The system includes a mechanism for automatically flattening the panels when moving them into their fully extended position by applying a momentary backward force to the panels as the panels approach the extended position. The system also includes a mechanism for breaking the panels to permit easy retraction and stacking of the panels. A rotatable cam positioned on the overhead track of the wall system forces a hinge of two connected panels outward so that the panels will stack when a reversing force is applied to the panels.

Abstract: A folding closure displaceably supportable in an opening to secure the opening. The closure is comprised of a plurality of elongated vertical panels interconnected along their vertical edges by a hinge assembly to permit the panels to fold in an accordion fashion for storage and to extend in an undulating stretched manner to obstruct the opening. The hinge assembly has a plurality of hinge attaching members to pivotally secure a pair of opposed panel connecting posts thereto. Each of the connecting posts is detachably securable to the hinge attaching members. The connecting posts further have a connecting slot for securing panel elements thereto. The improvement resides in that the connecting slot has an extension protective flange at least on an outer side portion of the connecting post to overlap and conceal an attachment member of a connector strip removably secured in the connecting slot.

Abstract: A panel for a multi-panel folding door includes a semi-rigid, transparent partition with insulating layers disposed on opposing sides thereof. A collapsible nose seal adjacent to a lateral edge of the panel and extending substantially the length thereof is adapted for engagement with another similar panel also having a collapsible nose seal to provide an interlocking, insulated seal between the panels when the door is closed while permitting the panels to be separated when the door is opened. A magnet in the collapsible nose seal of each panel is adapted for magnetic coupling to a metal plate in the other panel to provide a weather-tight, thermal insulating seal. Each of the insulating layers includes an aperture, with the apertures in mutual alignment to form a window in the panel.

Abstract: A folding door storage system for an opening of a closet including a first door panel and a second door panel, which panels are pivotal with respect to one another, and a carrier arrangement which can be moved, in a folded state of the door panels in which they are aligned parallel with one another, together with the door panels into a storage space. In order to achieve a safe guiding and moving of the door panels and in order to be able to use the system also for very large dimensions, the first door panel is mounted for movement transversely with respect to the front side of the closet on a guide rail by means of a guide element, wherein the guide element, in the folded state of the door panels, can be transferred into a second guide rail arranged parallel with respect to an outside wall of the closet. A locking mechanism is mounted on the carrier arrangement, which locking mechanism prevents unintended movements and swivellings of the door panels.

Abstract: An accordion door that is suspended from a horizontal rail. The door comprises individual sections that are each pivotable about a vertical axis that is centrally disposed relative to a width dimension of that section. The sections essentially comprise an expanded plastic core that is provided with panels on opposite sides.

Abstract: A foldable shutter for protecting sliding glass doors from storms and break-ins is formed of vertical panels hinged together. The panels are extruded with full length beads on both sides and are held together by long extruded hinge clips having separate channels into which beads of adjacent panels fit. These hinge clips are substantially longer than the panels and the ends are closed by closure members having pins extending into the channel and spacing the panels from the ends. These closure members support the shutter on rollers in an upper guide and guide the bottom of the shutter in a lower guide. The hinges have three separate functions--to hold the panels together, to support the shutters, and to hold the shutters in place in the guides. Locking end trim sections for the shutter are hinged to the end panels and are also longer than the panels for support and guidance.

Abstract: A door includes two door panels pivotally coupled together so that the door panels are rotatable relative to each other. A roller is disposed on an upper end of two distal posts and is guided to slide along a guide rail. A cylinder is fixed on each end of one of the distal posts. A rod is fixed to the roller and extends through an upper cylinder. The lower portion of lower cylinder is rotatably received in a hole and can be easily disengaged from the hole when the distal post is pulled upward.

Abstract: A novel folding storm shutter system includes an overhead header presenting a track and a pair of laterally spaced abutment surfaces. The system includes a plurality of trolley supported shutter members which are rotatable about a vertical axis. The system further includes a sill having a guide slot which is disposed beneath the track in alignment therewith. The sill also has a pair of laterally spaced abutment surfaces. An abutment contacting element is disposed at each corner of each shutter member so that when the shutter system is deployed the contact elements come into contact with the abutment surfaces to rigidify the structure. Trolley mechanisms are provided for supporting the trolley supported shutter members from a location midway between the edges of the shutter member so that the entire assembly is evenly balanced to facilitate maneuvering and deployment of the system.

Abstract: The present invention relates to a movable partitioning panel which can be moved along a hanger rail disposed in a ceiling to thereby form a suitable partitioning wall within a room. Runner devices arranged within the hanger rail are rotatable irrespective of the attitude of a panel body and can be smoothly moved with the hanger rail. In addition, the panel body can be simply moved at a branch path, a bend in the path and the like through upper and lower guide rollers and a controller device for the runner devices. Furthermore, the panel body in its horizontal attitude can be closely positioned with respect to a fixed wall.

Abstract: Apparatus is provided for securely and movably supporting a pair of folding doors hinged to each other at adjacent vertical sides and guidedly supported between upper and lower parallel rail members each of which includes a pair of elongate parallel guide rails. Elements provided on each of the two hinged doors engage the respective upper guide rails and both of the lower guide rails to be supported thereby and to be guided therealong so that the two hinged doors can be easily folded to be almost parallel to each other to permit wide opening of a doorway opening.

Abstract: An accordion door includes two half-wings hinged along innermost vertically extending sides thereof, and pivotally supported at upper and lower ends of the outermost vertically extending sides of the door by arms which project from respective trucks slidably engaged with respective upper and lower guide members. The trucks also include three pairs of wheels disposed on three axes orthogonal to each other. The wheels of each pair are fairly spaced apart and engage parallel and opposite surface of longitudinal elements making up the guide members. The trucks are thus confined to slide freely along only a horizontal axis defined by the guide members and cannot deviate from such an axis or from horizontal and vertical axes orthogonal thereto.

Abstract: A track assembly for a bi-fold door comprises a guide track having an elongated flat base, a pair of sides, and a pivot bracket. The outer edge of each side of the track is inwardly directed toward the base and defines a channel therein. A pair of runners extending from the pivot bracket provides means for reinforcing a portion of the guide track and reduces track vulnerability to deformation caused by lateral forces.

Abstract: A multi-panel, folding closure for a closet or recess has one panel suppod on an upright by a mechanism which permits that panel to move horizontally with respect to the upright for practically its entire width, thus permitting the closure to be stowed entirely within the recess when the closure is open.

Abstract: A folding door has plural pairs of panels and the panels of each pair are pivotally connected to one another via hinges defining vertical pivot axes. For any two neighboring pairs, a first panel of one pair and an adjacent second panel of the other pair are articulated to a carrier movable along a horizontal guide rail. At least each first panel supports an elongated actuating element having a projecting portion which overlies the adjacent second panel in the closed position of the door. Every carrier supports a two-armed lever which is rotatable on an axis paralleling the pivot axes defined by the hinges. In the closed position of the door, a first arm of each lever, is located in the path which the projecting portion of the respective actuating element follows during opening of the door while the second arm abuts the respective second panel.

Abstract: A folding door structure having a folding door, formed by a pair of pivotally coupled door sections, has upper and lower guide rails defining roller support surfaces. An upper guide body supports rollers which are guided along the roller support surfaces of the upper guide rail and a lower guide body has a shaft supporting further rollers which bear against the roller support surfaces of the lower guide rail. The shaft is spring biassed upwardly enabling relative displacement of the rollers and the lower guide body.

Abstract: A support and/or guide roller device for folding, sliding panels which consists of support pedestal (29) resting on the front side of panel (5) for one of the ends of the vertical axle bolt (23), whose other end is supported in a running carriage (21) for support rollers (22) or guide rollers. The distance between support pedestal (29) and running carriage (21) of support rollers (22) or the distance of the guide roller from this may be adjusted and fixed in the longitudinal direction of axial bolt (23). So that the support and/or guide roller device can be adapted to different thickness measurements of the panel cross-sections, axle bolt (23) sits on a bracket arm (26), with which support pedestal (29) can be displaced in a limiting manner essentially crosswise to the panel plane and can be set in a fixed manner in any chosen position (43-46 and 51.

Abstract: A floor supported movable wall panel system comprises a movable wall panel having opposing sides, an aperture in at least one of the opposing sides, a floor support assembly engagable with a floor, the assembly comprising a floor engaging mechanism, a support mechanism upwardly extending from the floor engaging mechanism and intermediate the opposing sides, the support mechanism supporting the wall panel, the support mechanism including an adjustment mechanism for adjusting the vertical distance between the floor and the wall panel, and the adjustment mechanism being located so as to be accessible through the aperture. A resilient, flexible, retractable seal substantailly covers at least one aperture, so that the adjustment mechanism may be accessed through the aperture by retracting the seal to expose the aperture. A wall panel may be hingedly connected on each side of a wall panel, and the center panel may be supported by an overhead support system, such as a dolly.

Abstract: An obstruction device for the purpose of securing a hatch or window opening from the interior on a room, using shutter slats hingedly mounted and vertically hung to the track on the inside edge of the shutter frame; horizontal members are fixed to the back of the frame near the top and bottom, and continuous from one side to the other to obstruct the shutters from swinging outwardly: the shutter frame is slotted continuously from one side of the frame to the other side and along a small portion of the inside edge in the four corners in the top and bottom: top and bottom horizontal sliding members are fitted into the said top and bottom sliding spaces and extend into slots of opposing corners so as to allow them to slide up and down in said slotted spaces but remain in the slots in opposing corners: Strong flexible straps attached to both ends of a bottom horizontal sliding member, are routed up over the rounded ends of spacer blocks and down the other side where it is attached to the ends of vertical sliding

Abstract: A guide arrangement for a door element (14, 16), particularly a sliding door element for a shower enclosure, includes a guide element (10, 12) at the bottom edge of the door element including a rotatable member (34) engaged with a guide channel (8) of a lower guide rail (2). The guide element can be disengaged from the guide rail, when desired. The rotatable member (34) is at least partially mounted in a transverse hole (35) in a holding body so as to be at least partially rotatable about an axis of rotation extending substantially perpendicular to the plane of the door element (14, 16). The rotatable member is additionally provided with an actuator, preferably in the form of a grip (10). The rotatable member (34) carries a pintle (38) which, depending on its rotational position, either engages the guide rail (2) or is pivoted out of engagement with the guide rail.

Abstract: A multi-section folding door includes first and second sets of vertically aligned panels with the panels in each set coupled together in an edge overlapping manner. Each of the panels is suspended from a support bracket attached to the panel's upper edge, with each of the brackets coupled to and suspended from a track by means of a respective trolley. A drive arrangement displaces the trolleys permitting the first and second sets of panels to be displaced toward or away from each other in closing or opening the folding door relative to an opening in a wall. Attached to an upper edge of each panel is an elongated flexible loop which is inserted in a lower slot of a respective support bracket along the length thereof. An elongated cord comprised of a hard material is inserted in the loop and positioned along the length thereof to maintain the loop securely coupled to and suspended from the support bracket.

Abstract: The invention relates to a partition (19) having horizontal guide rails (14, 14') held between lateral stops (16) and including three collapsible door panels (18, 20, 22) adapted to be moved to and from either side. The middle panel (20) is offset to the front and is articulated to one outer panel (22), whereas a groove (36) is provided on the upper edge of the middle panel for guiding a slidable articulation (28) attached to the other outer panel (18). An opener (40) having two lever arms (42, 48) is mounted to the articulation (30) and will be pivoted as the slidable articulation (28) passes, a long lever arm (48) engaging a slide face (52) of a joint crown (50). Magnetic gibs (60) are provided on the lateral stops (16) and on ledges (58) of the adjacent vertical edges (56) of the outer panels (18, 22). Preferably ball-boren rollers (66) support the door panels along the upper guide rail (14).

Abstract: A folding door for industrial use utilizes a curtain having a series of spaced-apart panel sections which are insulated, and one or more folding hinge sections spanning adjacent panel sections. The hinge sections are generally made of flexible sheet material thinner than the insulated panel sections. Such a curtain is suspended from a doorway, and is opened and closed by folding and unfolding the curtain around the hinge sections. The folding door of the invention is particularly advantageous for use in large industrial refrigerators and freezers.

Abstract: An industrial door comprising a pair of side panels and a pair of central panels with each central panel having approximately twice the horizontal width of a side panel. The upper end of one side edge of each side panel is pivoted to the jamb of a doorway, while the upper end of the opposite side edge of each said panel is pivoted to the adjacent side edge of a center panel. A track is located above the doorway and a pair of trolleys are mounted for movement on the track. Each trolley includes a vertical pivot shaft which is connected to a center panel at a location midway of the width of the panel. A drive mechanism is mounted in the header and includes an endless cable which is connected through a torque arm to the shaft of each trolley.

Abstract: The invention relates to a partition wall movable in an opening and consisting of double-walled panels coupled pivotally to each other at the standing edges, alternate panels being formed with a guide member attached fixedly to the panel and displaceable along a rail extending above the panels. An extension device in the form of a pin-like body which is slidable in an upper rail and which is continuously loaded by a force directed towards one of the standing hinged edges is provided. The partition wall is distinguished in that on the hinge edges two or more hinge assemblies are arranged, each provided with at least three parallel hinge pins and in each case with a pair of wings associated with each hinge portion. The partition wall further includes a panel wall whereby between the walls of each panel spacer elements are arranged.

Abstract: A folding door apparatus having a folding door made up of a pair of door bodies with the internal ends of the paired door bodies rotatably connected together so that the door bodies can be folded at the internal ends; guide hinge bodies fitted to the upper and lower portions of each of the door bodies of the folding door; and guide rails for supporting and guiding, through the guide hinge bodies, the door bodies of the folding door as they are folded together for opening the door or stretched flat for closing the door. The guide hinge bodies each have a base, a hinge mechanism and a support member. The support member is mounted rotatably on the base through the hinge mechanism. The base is secured to the outer end of each door body.

Abstract: In order to reduce heat transfer from one side of a folding fire door lead post assembly to the other side, the lead post assembly includes a central lead post which forms the leading edge of the assembly. In one embodiment of the invention, wing panels extend from the sides of the central lead post and the receiving recess for the door when in closed condition is adapted to receive the central lead post and adjacent portions of the wing panels so that no portion of the central lead post is open to a room on either side of the door when the door is in closed condition. Heat transfer is from one wing panel to the central lead post to the other wing panel rather than directly from the fire to the central lead post. In a second embodiment of the invention, lead post side extensions are secured to the central lead post with heat insulating material therebetween.

Abstract: An accordion type folding door assembly designed for mounting across the entrance to a space to be secured. The panels of the assembly are interconnected by supplemental hinges completely shielding the spaces from vandalism and forcible entry, while simultaneously rigidifying and stiffening the door structure.

Abstract: A multi-section folding door includes first and second sets of vertically aligned panels with the panels in each set coupled together in an edge overlapping manner. Each of the panels is suspended from a support bracket attached to the panel's upper edge, with each of the brackets coupled to and suspended from a track by means of a respective trolley. The trolleys permit the first and second sets of panels to be displaced toward or away from each other in closing or opening the folding door relative to an opening in a wall. An endless chain/sprocket arrangement driven by an electric motor allows the multi-panel folding door to be opened and closed very rapidly. A thickened upper edge of each panel is inserted in a lower slot of a respective support bracket along the length thereof to facilitate assembly and installation of the door as well as replacement of a damaged or worn panel.

Abstract: An industrial door comprising a pair of side panels and a pair of central panels with each central panel having approximately twice the horizontal width of a side panel. The upper end of one side edge of each side panel is pivoted to the jamb of a doorway, while the upper end of the opposite side edge of each said panel is pivoted to the adjacent side edge of a center panel. A track is located above the doorway and a pair of trolleys are mounted for movement on the track. Each trolley includes a vertical pivot shaft which is connected to a center panel at a location midway of the width of the panel. A drive mechanism is mounted in the header and includes an endless cable which is connected through a torque arm to the shaft of each trolley.