Abstract: The disclosure generally relates to an exemplary enclosure that can house an electrical network protection element and provide protection to the electrical network protection element against damage in various environments such as when the enclosure is placed in an underground vault that may be flooded during rain, or when a liquid (oil, for example) comes in contact with the enclosure. The enclosure includes a flange attached to the housing and two doors that are hingeably attached to the flange. A wedge projection is provided along the perimeter of the flange and a gasket is provided on three outer edges of each door. The gasket sealingly receives the wedge projection of the flange when the doors are closed. The first door further includes a beveled inner edge that sealingly mates with a gasket in a complementary beveled inner edge of the second door when the doors are closed.

Abstract: A plastic table board includes a top panel and a reinforced frame, wherein an edge of the top panel is equipped with a downward-extending side edge, the reinforced frame is located below the top panel, an outside edge of the reinforced frame is closely adhered to the side edge of the top panel; the outside edge of the reinforced frame is provided with a first plane, a connecting surface and a second plane, the connecting surface is an inward-bent cambered surface for connecting the first plane and the second plane; the first plane and the side edge of the top panel are located at a same vertical plane, the second plane is fixed with an inner wall of the side edge of the top panel, and a bottom end of the side edge of the top panel is located above the connecting surface.

Abstract: A safety cabinet includes an enclosure having a double-walled construction and a pair of doors to selectively seal the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The safety cabinet incorporates a sequential door-closing system that sequentially closes the doors of the safety cabinet in a predetermined order.

Abstract: A safety cabinet is disclosed which includes an enclosure having a double-wall construction and at least one door to selectively seal the enclosure. The safety cabinet includes a latch system for selectively retaining the door(s) in a closed position to cover the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The latch system includes fusible links that fuse when exposed to high ambient temperatures and cause the latch system to further engage the enclosure, thereby promoting the interlocking relationship between the door(s) and the enclosure when the safety cabinet is exposed to threshold high ambient temperatures.

Abstract: A lightweight glass plate includes a first glass plate, a second glass plate and an intermediate layer that connects the first and the second plates together. The lightweight glass plate further includes at least one connection element that allows the lightweight glass plate to be connected to an abutting component. The connection element is embedded into the intermediate layer in an edge area of the lightweight glass plate and the intermediate layer extends to surfaces located between the connection element and the glass plates. The lightweight glass plate is preferably used in the preparation of elevator doors and/or car walls. The lightweight glass plates are lightweight and can transfer large forces.

Abstract: A cabinet with a door sequencer is described. The cabinet includes a first door and a second door to close an opening of the cabinet. A first gas spring closes the first door before a second gas spring closes the second door. The door sequencer automatically closes the first and second doors in a correct order to promote compliance with safety regulations.

Abstract: A safety cabinet is disclosed which includes an enclosure having a double-wall construction and at least one door to selectively seal the enclosure. The safety cabinet includes a latch system for selectively retaining the door(s) in a closed position to cover the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The latch system includes fusible links that fuse when exposed to high ambient temperatures and cause the latch system to further engage the enclosure, thereby promoting the interlocking relationship between the door(s) and the enclosure when the safety cabinet is exposed to threshold high ambient temperatures.

Abstract: An accessory mounting bracket for securing door accessories to a door coordinator. The accessory mounting bracket has stepped portions that define a channel that is sized to receive a door coordinator. A recess is disposed below the channel and provides an offset for fasteners that mount the door coordinator to a door frame and may protrude from the door coordinator. A set of bores are used to attach the accessory mounting bracket to the door coordinator and a soffit of the door, while a second bores, which are threaded, allows for attachment of a door accessory to the accessory mounting bracket. The second bores are formed in the accessory mounting bracket so as to be spaced apart from the door coordinator.

Abstract: A safety cabinet has a body, a pair of doors each pivotal on the body about a respective axis between an open position and a closed position, respective spaced outer guides on the body juxtaposed with the doors, and respective elements displaceable along the guides and coupled to the doors for movement between outer positions when the respective doors are in the open position and inner positions when the respective doors are in the closed positions. A catch between the guides is engageable with the elements and shiftable therewith. A spring also between the guides is engaged between the catch and the body and biases the catch inward toward engagement with the elements. A release device secured between the catch and the body normally holds the catch in an outer position with the spring in a tensioned condition but can release the catch and thereby push the elements with the catch into their inner position to close the doors.

Abstract: A sealing assembly is provided for a vehicle having independently opening and closing closure panels, such as first and second doors, which are hinged to a vehicle body with opposing hinges. The sealing assembly has a first seal that is mounted to the vehicle body to substantially surround a continuous door opening, and has a first membrane portion that extends over a first portion of the cutline. A second seal is mounted to a surface of the first door that faces the first membrane portion when the first door is closed. A third seal is mounted to a surface of the second door that faces the first membrane portion when the second door is closed. The first membrane portion is configured to be movable toward the closed first and second doors into contact with the second and third seals to seal the first portion of the cutline.

Abstract: A cover for use with a rack system defining a bay for mounting electronic components may comprise six mounting brackets, a door frame, two hinges, and a door. The six mounting brackets may each have a respective first end and a second end. The first end of each mounting bracket may be configured to attach to a respective junction plate associated with the bay. The door frame may be configured to attach to the second ends of the six mounting brackets. The two hinges may be disposed on the door frame. The door may be configured to mount on the two hinges and block access to the bay when closed.

Abstract: A laser barrier system for an optical table includes a plurality of laser barrier panels hingeably mounted to the edge of the table by a plurality of spaced hinge brackets. The hinge brackets include a horizontal flange secured to the surface of the table, a lower pivot support extending downwardly from the flange and an upper support column extending upwardly from the flange. Each hinge bracket supports a vertically extending jamb member secured to the upper support column. Each laser barrier panel is hingeably supported by pivot pins between a pair of spaced hinge brackets and their associated jamb members, and is hingeably movable about the pivot pins between a closed position and an open position. Each laser barrier panel is maintained in the closed position by a spaced pair of rotatable latch tabs that selectively engage with the adjacent jamb members.

Abstract: A double sliding security door for the complete protection of both glass panels of a sliding glass door and preventing of unwanted people or things from entering a home. The double sliding security door generally includes 4 inner locking frame assembly parts, a center post attached to the top and bottom tracks, and 2 sliding doors with security screen, locks and bearing.

Abstract: A pair of opposing hinged doors includes a first door and a second door having a first window panel and a second window panel respectively. The first window panel moves along a first path that initially guides the first window panel away from the second window panel and then guides the first window panel vertically downward when moving from an extended position into a retracted position. Similarly, the second window panel moves along a second path that initially guides the second window panel away from the first window panel and then guides the second window panel vertically downward when moving from an extended position into a retracted position. The movement of the first window panel and the second window panel along the first path and the second path respectively allows for the first door and the second door to be independently openable relative to each other.

Abstract: A first movable barrier operator is actuated in order to move a first movable barrier to a first predetermined position via a first movement and according to a first operating characteristic. A second operating characteristic is selected for moving a second movable barrier to a second predetermined position via a second movement. The second operating characteristic is chosen so that the second movement of the second movable barrier to the second predetermined position does not interfere with the first movement of the first movable barrier to the first predetermined position. A second movable barrier operator is actuated to move the second movable barrier to the second predetermined position via the second movement according to the second operating characteristic.

Abstract: A refrigerator includes a body, a first door and a second door, where one of their edges is fixed to the opposite side of the opening of the body, and a beam which is joined to one edge of the first door which is opposite the fixed edge of the door. The beam can be pivoted by a guiding projection which can be displaced in a guiding groove on the edge of the opening, between a position when the first door is closed, in which one edge of the second door, which is opposite the fixed edge of said door, is applied to the beam, and a position when the first door is open, wherein the beam can pass to the closed second door. The guiding projection can be displaced in relation to the first door in the direction of the pivotable axis thereof.

Abstract: A sliding assistance mechanism for helping a switching operation of a moving body on a main body side, includes a case attached to the main body side; first and second moving members slidably placed in the case, respectively; a pair of latches pivotally supported at each moving member, respectively, and releasably locked to corresponding parts of a case side; an urging device provided between both moving members; and a guide groove provided in the case for moving the latches along the same; and first and second operational members spaced apart from each other and provided in the moving body. When the moving members are at a halfway position, an engagement of one of the latches with the second operational member provided in the second moving member is released, and the moving body is pulled by the urging device to the second position.

Abstract: A safety cabinet has a plurality of walls defining a front open side and a pair of doors pivotal about respective horizontally spaced axes on the walls between a closed and an open position. Guides in the cabinet are each associated with a respective one of the doors, and respective links each have a front end connected to a respective one of the doors and a rear end shiftable front-to-back in a respective one of the guides. A connector extends between the rear ends of the links and shifts front-to-back with them. A closer is operatively engageable with the connector, and a spring applies bears on the closer to urge it against the connector for pushing same into the rear end position and closing the doors. An actuator normally holds the closer out of engagement with the connector during movement of same between the front and rear end positions.

Abstract: A pair of interlocking bi-parting sliding doors includes a first sliding door and a second sliding door, wherein the first sliding door has a first meeting stile that includes a first side portion for maintaining a door glass panel and a first mating side portion for engaging the second sliding door, wherein the first mating side portion includes a plurality of recessed zones, and wherein the second sliding door has a second meeting stile that includes a second side portion for maintaining a door glass panel and a second mating side portion for engaging the first mating side portion of the first sliding door, wherein the second mating side portion includes a plurality of extensions, wherein when the first sliding door and the second sliding door are in a closed position, the plurality of extensions interlock with the plurality of recessed zones.

Abstract: A cooking appliance includes first and second French-style doors connected through a door linkage system. The door linkage system includes first and second control arms, each including a first end linked to a corresponding one of the first and second doors and a second end. The second ends of the first and second control arms are interconnected and mounted so as to travel in an arcuate path when one of the doors is operated. Shifting one of the first and second doors in an open or closed direction results in a corresponding movement in the other door. The first and second control arms are actually interconnected to a linkage control arm that establishes a particular timing of the doors. The door linkage system also employs a camming surface, cam follower and spring element that provides a biasing force to the doors.

Abstract: A shutter assembly includes left and right shutter doors hingedly mounted between upper and lower horizontal frame members secured over an opening to be shuttered. Vertical stiles serve as the left and right frame members of each of the shutter doors. The vertical stile on the unhinged side of one of the shutter doors includes a vertical flange that engages and secures the vertical stile on the unhinged side of the other shutter door when both doors are closed and locked. The two vertical stiles framing each door retain left and right pivot strips to which a plurality of louvers are mounted for rotation. A louver tilt rod mechanism is attached to and hidden from view behind one of the vertical styles of each of the doors and operates to mechanically link the louvers for movement in concert. A wire rope is positioned longitudinally within each of the louvers to prevent a breach of the shutter assembly through attempted bending of the louvers.

Abstract: An apparatus and method for enhancing the security of a cluster box unit which includes a protective enclosure, internal cabinetry, door, hinge and locking system. The cluster box unit may also include outgoing mail compartment doors that are heavily constructed and rigidly reinforced, with the locks carried thereon protectively shielded, and with the extensible bolts of these locks being engaged by brackets that not only lock the outgoing mail compartment doors but also the master loading doors of the cluster box units. The cluster box unit may also include master loading doors are provided with hinges that extend the full height of the doors—hinges that are defined by pivotally interfitting elements of extrusions that very sturdily mount the master loading doors, that prevent prying or bending the doors in the vicinities of their hinges.

Abstract: A surface-mounting multipoint lock includes an elongated housing having a lower end, an upper end, and a mounting member. The lock is configured for attachment along and external to a non-hinged vertical edge of a swinging panel along substantially a full extent of the non-hinged vertical edge. A plurality of spaced latch bolts in the housing include an upper latch bolt proximate to the upper end of the housing, and a lower latch bolt proximate to the lower end of the housing. The latch bolts are substantially laterally movable between a locked position and an unlocked position.

Abstract: An astragal boot for mounting onto a lower end of an astragal includes a platform, a first and second lateral fin spaced from each other and projecting downwardly from the platform, and an auxiliary fin disposed between the first and second lateral fins. The auxiliary fin defines an auxiliary fin edge extending from the first lateral fin to the second lateral fin for sealing engagement with the threshold. The auxiliary fin includes a hub portion and a first and second leg portion each extending from the hub portion to the first and second lateral fins, respectively. The first leg portion extends along a first direction defining a portion of the auxiliary fin edge along the first direction and the second leg portion extends along a second direction at an obtuse angle relative to the first direction defining another portion of the auxiliary fin edge along the second direction.

Abstract: A door seal for use with a bi-parting door in which the door panels of the door have supplementary angled leading edges. One leading edge has a triangular cross-section, while the other has a cross-section similar to a parallelogram. To further the reliability of the door seal, a plurality of magnets with corresponding magnet attracting plates may be attached along the leading edges. Alternatively, both leading edges may have at least one magnet aligned with a magnet on the other edge. With the double magnet configuration, the use of multi-pole magnets is necessary. The magnets also help reduce the bounce between the door panels, which may be closed roughly, and increase the force required to separate the door panels when closed.

Abstract: A safety cabinet is disclosed which includes an enclosure having a double-wall construciton and a pair of doors to selectively seal the enclosure. The safety cabinet includes a retaining system for retaining the doors in an open position and a closure system for automatically closing the doors. The safety cabinet also includes a latch system for selectively retaining the doors in a closed position to cover the enclosure. The latch system includes a paddle handle, first and second slide plates, a bullet slam latch, and first and second latch rod assemblies. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste.

Abstract: An extendable astragal system (40) includes a housing (47), an actuating member (48) located in and slidably engaged with the housing (47), and an astragal (50) located in the housing (47) and slidably engaged with the housing (47) and the actuating member (48). A latch mechanism (80) retains the astragal (50) within the housing (47) when an ambient temperature is below a predetermined temperature. The latch mechanism (80) enables sliding movement of the actuating member (48) and resultant movement of the astragal (50) to an extended position outside of the housing (47) when the ambient temperature is at the predetermined temperature.

Abstract: A first door closer unit and a first swing arm close a first door leaf of a pair of door leaves arid a second door closer unit and a second swing arm close the second door leaf of the pair. A guide rail supported by a door frame guides the distal ends of the swing arms. A closure sequence controller includes a control member in the guide rail between the distal ends of the swing arms and movable against the force of a spring, a support element stationarily supported by the guide rail, and a movable blocking member. The closure sequence controller is arranged in cooperation with the distal ends of the swing arms at the end phase of the closing movement of the door leaves so that the blocking member prevents movement in the guide rail of the distal end of the second swing arm until the distal end of the first swing arm acts on the blocking member through the control member go that the blocking member allows closing of the second door leaf.

Abstract: A center-matched double hinged door assembly for a vehicle having a continuous side aperture at each of opposite side of a vehicle body comprises a front door hinged at a rear end to the vehicle body, a rear door hinged at a front end to the vehicle body, and a door lock/unlock mechanism operative to prevent the rear door from opening prior to the front door while the front door remains closed, to allow the rear door to open while the front door remains open and to allow the rear door to close irrespective of whether the front door remains open or closed.

Abstract: First and second door leaves are pivotable with respect to a door frame and each door leaf has a hinge edge at which it is hingedly attached to the door frame. Each door leaf is provided with a door closer and a pull arm for closing the door leaf. The door frame is provided with a guide rail mounted to the door frame for guiding movement of distal ends of the pull arms longitudinally of the guide member. During closing movement of the second door leaf, the distal end of the second pull arm moves along the guide rail initially in an allowing direction, away from the hinge edge of the second door leaf, and subsequently in a blocking direction, towards the hinge edge of the second door leaf. During closing movement of the second door leaf, a blocking device allows movement of the distal end of the second pull arm past the blocking device in the allowing direction and selectively prevents return movement of the distal end of the second pull arm past the blocking device in the blocking direction.

Abstract: An interlocking door seam provides a stronger seam for double doors, making them less subject to attack by prybars and the like. Particularly for central mail stations (CMS) and central box units CBU, double doors present there are subject to attack by prybars and the like that force the locks and allow thieves to rifle the contents of the enclosed mail boxes. Attachment of interlocking door seam to the first edge of the first double doors protects that first edge from prybar attacks. The adjoining edge of the second double door then releasably fits into a convex strip that protects the adjoining edge of the second double door, thereby protecting it from prybar attack. The interlocking door seam allows normal operation of the double doors while decreasing the risk to the central mail station of prybar attack at the seam between the double doors. Flanges present along the free edge of the convex strip provide easy engagement of that free edge.

Abstract: A closure sequence control arrangement for a double door in which the double door is provided with a first door closer and a first pull arm for closing a first door leaf and with a second door closer and a second pull arm for closing a second door leaf. A guide rail guides the distal ends of the pull arms relative to the door closers. A closure sequence controller includes a connection piece for transmitting force from the distal end of the first pull arm to the closure sequence controller. The closure sequence controller prevents movement of the distal end of the second pull arm in the guide rail until the distal end of the first pull arm has exerted a pulling force on the closure sequence controller through the connection piece.

Abstract: An interlocking door seam provides a stronger seam for double doors, making them less subject to attack by prybars and the like. Particularly for central mail stations (CMS) and central box units (CBU), double doors present there are subject to attack by prybars and the like that force the locks and allow thieves to rifle the contents of the enclosed mail boxes. Attachment of interlocking door seam [of the present invention] to the first edge of the first double doors protects that first edge from prybar attacks. The adjoining edge of the second double door then releasably fits into a convex strip that protects the adjoining edge of the second double door, thereby protecting it from prybar attack. The interlocking door seam allows normal operation of the double doors while decreasing the risk to the central mail station of prybar attack at the seam between the double doors. Flanges present along the free edge of the convex strip provide easy engagement of that free edge.

Abstract: A mechanism for self-latching access doors of a safety cabinet following sequential self-closing of the doors. Latching takes place between the doors and at a top and bottom frame of the cabinet. A latching arm and two actuating arms extend from a bellcrank which is biased toward a latched position. An interference bar prevents rotation of the bellcrank to the latched position when the doors are open. Upon sequential self-closing of the doors an actuating means slides the interference bar to a position of non-interference with the bellcrank which enables the self-latching action to take place.

Abstract: The present invention is a compact door coordinator which includes a relatively narrow housing having mounted therein and extending therefrom a lead control lever and a longer trailing control lever. Both control levers are spring biased to extend from the housing when the doors are open. A relatively simple linkage extends from the lead control lever to the trailing control lever for retaining the ladder in its extended position until the lead door contacts the lead control lever. At that point, the lead control lever is pushed into the housing and rotated against the force of a torsion spring, causing the linkage to move and thereby rotating a cam which then releases the trailing control lever allowing the trailing door to push the trailing control lever into the housing to complete the closing process.

Abstract: An interlocking door seam provides a stronger seam for double doors, making them less subject to attack by prybars and the like. Particularly for central mail stations (CMS) and central box units CBU, double doors present there are subject to attack by prybars and the like that force the locks and allow thieves to rifle the contents of the enclosed mail boxes. Attachment of interlocking door seam to the first edge of the first double doors protects that first edge from prybar attacks. The adjoining edge of the second double door then releasably fits into a convex strip that protects the adjoining edge of the second double door, thereby protecting it from prybar attack. The interlocking door seam allows normal operation of the double doors while decreasing the risk to the central mail station of prybar attack at the seam between the double doors. Flanges present along the free edge of the convex strip provide easy engagement of that free edge.

Abstract: A pivoting watertight door has at least one panel with two parallel bars mounted thereon by means of links. At least one link forms a catch for locking the door in a closed position. The links are mounted so as to pivot on the door panel and also on the parallel bars where the bars are connected together at their ends, in pairs, and facing each other. Two connecting links are mounted so as to pivot on the one hand on the panel and on the other hand on two facing ends of the bars.

Abstract: A safety cabinet for the storage of flammable or combustible materials that has doors and a closure mechanism designed to automatically close and latch the doors in the event of fire. The closing mechanism is fully automatic and eliminates mechanical timing features as well as provides an automatic positive method and structure of closing the doors of the cabinet to insure a complete seal and lock. Furthermore, the latching assembly is operated using a handle which may be rotated into a tucked position. In this position, the handle rests in a cavity formed within the doors of the cabinet for protectively shielding the latching assembly to prevent accidental or unauthorized opening and handle breakage.

Abstract: A safety cabinet for the storage of flammable or combustible materials has doors designed to automatically close in a specified sequence. The door sequencing device has three components: a stop bracket mounted to one door, a cam bracket mounted to the other door and a slide bar with a roller on one end mounted to the inside surface of the top of the safety cabinet. The slide bar is operably associated with the two brackets such that it blocks the movement of the stop bracket on one door until the cam bracket of the other door engages the roller and removes the slide bar from the path of the stop bracket thereby allowing the second door to close.

Abstract: A door assembly includes a conventional swinging door which closes against a side light panel that is normally locked in place and effectively forms part of the jamb. The side light panel is, however, mounted on hinges so that it can swing open when unlocked, to provide a temporary wide entryway to permit the passage of large items such as furniture.

Abstract: A mechanism for closing in sequence a first door (D1) and then a second door (D2) has pivot pins (40) mounted to the door frame. Each pin engages a cam plate (30), so that the plate can rotate. Linkages, such as doors arms (20) hinged from each door to the corresponding cam plate, cause the doors to close when the cam plates rotate. A pair of crossed shuttle arms (50, 60) are rotatably coupled to the cam plates. On the first cam plate the shuttle arms are fastened at a radial distance (d/2) from the pivot pin, and on the second the shuttle the shuttle arms are fastened at a greater radial distance (D/2). The two different distances cause the cam plates, as linked by the shuttle arms, to rotate at different angular rates. The door linked to the cam plate with the smaller distance closes first. The mechanism is asymmetrical with the distances from the pivots to the door arms, the lengths of the door arms, and the attachment points of the hasps on the two sides being in general unequal.

Abstract: A door closing mechanism for a two-panel door having a leading panel and a trailing panel disposed adjacent to one another and being hingedly connected to a door frame. The door closing mechanism controls the closing sequence of a leading panel and a trailing panel, such that a trailing panel is locked in an open position prior to the closing of a leading panel. A locking mechanism, for locking and unlocking the trailing panel, includes a pivoting member which interacts, inter alia, with a sliding block and release member, for pivotally locking and unlocking a locking device. This locking mechanism pivots the pivoting lever into a locking position for preventing the closure of a trailing panel in advance of a leading panel upon a leading panel moving from a closed position to an open position. This locking mechanism can also pivot the pivoting lever into an unlocking position for permitting positioning of a trailing panel into a closed position upon a leading panel being in a closed position.

Abstract: A door latch assembly having open and closed positions comprises a door latch and a locking clip removably mounted upon it. The door latch has a bracket mounted on a door and an elongated bolt with a shank slidably and rotatably seated in the bracket. The bolt includes a shank with a handle at one end and a locking arm at the other end extending substantially perpendicularly to the shank. The bolt is rotatable at least 90.degree. about its axis to move the arm between a first position to a second position, and is also reciprocable axially in the bracket to move the arm portion from a first position spaced from the bracket to a second position adjacent to the bracket. The locking clip is removably mounted upon the shank of the bolt between the locking arm of the bolt and the bracket in the first axial position of the bolt, so that, when the clip is mounted upon the bolt, the clip restricts the axial movement of the bolt from the first position by its abutment against the bracket.

Abstract: An improved storage cabinet is provided which is particularly suitable for the safe storage of flammable materials. An embodiment of the cabinet includes two side-by-side doors which close toward each other. Each door is self-closing, being biased in a closed position by a spring. For convenience, each door can be retained in an open position by a chain. The chain includes a fusible link which melts in the presence of a dangerous level of heat, allowing the associated door to close. In order to protect the interior, the doors have overlapping edges. Accordingly, the cabinet has a closing synchronization mechanism which causes the dual doors to close in a predetermined order. Sequential closing is necessary to effect a proper overlapping of door edges, providing a heat shield. Furthermore, the doors are self-latching, as one door has an independent, three-point latching arrangement which engages the cabinet housing at the top and bottom as well as the first-closed door.

Abstract: A fiberglass bulkhead door assembly includes a bulkhead enclosure for mounting on a bulkhead, at least one door and top and bottom hinges for mounting the door to the bulkhead enclosure. The bulkhead enclosure includes fiberglass side walls, a sloping fiberglass top wall and a tie bar connected between the side walls. The top wall has a door opening. The door is movable between a closed position covering the door opening and a open position providing access to the bulkhead. Each of the hinges includes a fixed member attached to the bulkhead enclosure and a movable member attached to the door. The fixed member of the bottom hinge is rigidly affixed to the tie bar so as to transfer stress to the tie bar during opening and closing of the door.

Abstract: A locking astragal for attaching to an inactive leaf of a double doorway. In the illustrated embodiment, an elongated astragal casing has a channel and bolt-slide assemblies mounted slidably within the channel. Each bolt-slide assembly includes a latching member and bolt. By depressing the latching member, the latching member can slide through the channel to extend and lock the bolts into indentations in the upper and lower surfaces of the door frame. The bolts may also be retracted back into the astragal to open the inactive leaf. In the illustrated embodiment, each latching member has an integral spring which simplifies fabrication and assembly.

Abstract: A power mine door system including a door frame to be installed in a mine passageway to define a generally rectangular doorway. A mine door is defined by a pair of generally rectangular door leafs which are hinged on the door frame at opposite sides of the doorway for swinging between an open position to permit passage through the doorway and a closed position in which the door leafs are generally coplanar and close the doorway. The door leafs are so dimensioned that there is a substantial vertical gap between the door leafs when they are closed to accommodate convergence of side walls of the passageway. A relatively wide vertical sealing flap is secured to one of the door leafs for overlapping a face of the other door leaf when the door is closed for covering the gap between the door leafs.

Abstract: An operator for a French casement window having an operating arm with a roller mounted at its end and pivotable to move in an arc between extended and retracted positions, and a channel member horizontally mountable on the inner side of one sash and confining the roller as the operating arm is moved between its extended and retracted positions to move one between open and closed positions, respectively. A bracket is on the inner side of the other sash adjacent its outer vertical side, and a drag link is pivotally connected on one end to the bracket and on the other end to the operating arm to move the other sash between open and closed positions synchronously with the first sash when the operating arm is moved between its extended and retracted positions, respectively.

Abstract: In a rotary tube locking mechanism, the rotary tube itself is expanded into and against a steel ring which journals the tube to form an obstruction. A guide plate cooperates with this obstruction to provide an anti-racking function.

Abstract: A door closure arrangement is provided for a paint cabinet or like enclosure containing combustible materials. Right and left hand doors are hinged to door jambs in the cabinet's opening and an overlapping lip is provided on one of the doors to insure that no gap between the doors exists when the doors are closed. Door closures, held in an open position by temperature sensitive fusible links, rotate the doors from an open to a closed position should a fire melt the fusible links. A spring biased, lever actuated door sequencing mechanism insures that the doors closed in proper sequence without interference from the overlapping lip. A spring biased, lever actuated mechanism automatically latches or locks the doors when they are rotated into the closed position whereby the adverse effects of the fire on the contents of the cabinet are minimized.