Abstract: An exemplary sealing system includes a frame having a generally ring shape with a body and a ledge extending from the body. The exemplary sealing system further includes a ring shaped seal having a body with a finger extension extending therefrom and contacting the body of the frame to create a seal. The ledge forms a gutter region allowing water and/or contaminated to flow around and out of the frame to prevent the same from entering a compartment of a vehicle.

Abstract: There is provided a security door leaf assembly, comprising a leaf frame structure, having at least a top rail member, a bottom rail member, a hinge stile member and a lock stile member; at least one inner leaf panel, removably mountable to a first side of said leaf frame structure; at least one outer leaf panel, removably mountable to a second side of said leaf frame structure, that is opposite to said first side; at least one first security-upgrade liner, and at least one first upgrade cavity, formed by said leaf frame structure, said at least one inner leaf panel and said at least one outer leaf panel, accessible via said at least one inner and/or outer leaf panel and adapted to removably receive and operatively affix said at least one first security-upgrade liner; and at least one first liner mount adapted to mount said at least one first security-upgrade liner in a predetermined position within said at least one first upgrade cavity.

Abstract: A sealing system seals the perimeter of insulated hinged double doors. The sealing system includes first and second exterior seals made of a monolithic, resilient and elastically deformable material. The first exterior seal has an elongated lobe for contacting the exterior of said door, and both of the first and second exterior seals have an interior lobe which contact one another when the doors are closed. The sealing system further includes first and second inner seals made of a monolithic, resilient and elastically deformable material, each having a pair of spaced-apart sealing lobes. The inner seals are mounted to respective doors in a staggered fashion, such that the respective pairs of sealing lobes interact with one another to create a redundant, weather-resistant and thermally robust seal when the double doors are closed.

Abstract: A sealing system seals the perimeter of insulated hinged double doors. The sealing system includes first and second exterior seals made of a monolithic, resilient and elastically deformable material. The first exterior seal has an elongated lobe for contacting the exterior of said door, and both of the first and second exterior seals have an interior lobe which contact one another when the doors are closed. The sealing system further includes first and second inner seals made of a monolithic, resilient and elastically deformable material, each having a pair of spaced-apart sealing lobes. The inner seals are mounted to respective doors in a staggered fashion, such that the respective pairs of sealing lobes interact with one another to create a redundant, weather-resistant and thermally robust seal when the double doors are closed.

Abstract: A pivoting mullion for a temperature-controlled storage device is provided. The pivoting mullion includes a mullion body pivotally attached to a display case door of the temperature-controlled storage device. The mullion body is rotatable relative to the display case door between a first position when the display case door is open and a second position when the display case door is closed. The mullion body is configured to provide a support surface against which the display case door rests when the mullion body is in the second position and the display case door is closed. The pivoting mullion further includes a lighting element fixed to the mullion body and configured to activate when the display case door is closed. Activation of the lighting element illuminates items within the temperature-controlled storage device such that the items are visible through the display case door when the display case door is closed.

Abstract: A door is formed into a folding door by dividing the door into two parts to left and right, that is, a hanging door and a door-end door pivotally supported by the hanging door, and the door-end door is used as the pressure difference mitigating mechanism, and the two doors are integrally operated in a normal time, while if a pressure difference is generated, the door-end door can be first opened in order to reduce an opening force, and the door device with a pressure difference mitigating mechanism with excellent operability is provided. A handle position, a latch position, and a torque are adjusted for a handle for door opening/closing, a door closer, a hinge closer for rotating the door-end door with respect to the hanging door, a latch A of the door-end door to a door frame, and a latch B of the door-end door to the hanging door.

Abstract: A closing profile for mounting on one of two opposite members of a door assembly, at least one of the opposite members being a rotatable door, the closing profile including a mounting member by means of which the closing profile is mounted to a reveal part of the one member of the door assembly and a flexible member connected to the mounting member, the flexible member being shaped for engaging a complementary edge part on the other member of the door assembly and for releasably maintaining the door in a closed position. The closing profile may have a hollow space between the flexible member and the mounting member, to enable the flexible member to deform resiliently towards the mounting member upon opening the door, and the flexible member is preferably longitudinally divided into two wings, each being provided for engaging the complementary edge part and maintaining the closed position in one direction of opening the door, the wings being bendable independently from each other towards the mounting member.

Abstract: A one-piece seal is used between the rear doors of a semi-trailer truck and the rear frame of the truck, the seal having a good compression set resistance. The seal is made from multiple extrusion members that are fused, welded, or otherwise integrally, monolithically connected at corner joints to form a central opening. The extrusion members have a sealing profile, or cross-section, that allows for the compression and deflection of a pair of sealing lobes to create inner and outer seals, respectively, between the trailer frame and the door structure at the rear of a semi-trailer truck, as well as between the doors themselves.

Abstract: A sliding door assembly is provided comprising a first door having a tortuous leading edge, a door frame, a guide track, and a member having a complementary tortuous edge to that of the door. The drive assembly includes magnets to drive the door between open and closed positions.

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 system for controlling an access opening in a vehicle body includes first and second doors arranged to selectively open and close first and second portions of the opening. The system also includes a device operatively connected to the first door and configured to be selectively retracted before at least one of the first and second doors is opened. The device is also configured to be protracted when the first and second doors are closed to thereby seal the first and second portions of the access opening. The system additionally includes a controller configured to selectively retract and protract the device. Furthermore, the system includes a sensor arranged on the vehicle and configured to detect an impact exceeding a threshold intensity on the body and communicate a signal indicative of the impact to the controller. The controller retracts the device upon receipt of the signal from the sensor.

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 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: Electrode containers and associated methods are provided. In one embodiment, an electrode container includes sides and a top, and the top includes an opening adapted to receive a rod of an electrode. A plurality of flexible members are interconnected about the perimeter of the opening, wherein at least some of the plurality of flexible members overlap with one another. In one embodiment, a method includes removing an electrode from a metal electrolysis cell and placing the electrode into a container, where the placing step includes the steps of engaging at least one lever of a top flap of the container with a surface of the electrode and, concomitant to the engaging step, moving the top flap from a first position to a second position.

Abstract: A vehicle includes a pair of opposing-hinged doors having a first door and a second door. The first and second doors each include a tumblehome portion that extends inboard of a first rotation axis and a second rotation axis respectively. The first door and second doors are disposed adjacent each other when in a closed position, and define a gap between the tumblehome portions of the first and second doors. An appliqué is moveably attached to one of the doors, and is moveable between a sealing position and a withdrawn position. When in the sealing position, the appliqué extends across the gap. When in the withdrawn position, the appliqué is spaced from one of the doors, thereby allowing the doors to simultaneously rotate open in opposite directions without the tumblehome portions of the doors contacting or otherwise interfering with each other.

Abstract: A hinged vapor wall for use in mobile living quarters having a main living area and a secondary area such as a garage. The vapor wall has a first and second section that overlap to form a barrier between the garage and the main living area. When the sections of the vapor wall are in their closed position, the main living area and the garage area are divided into separate airtight compartments. Typically, small vehicles such as motorcycles and ATVs are placed in the garage, and the fumes from their fuel may spread into the main living space in the absence of a barrier. A permanent barrier sacrifices space within the main living area. The hinged vapor wall of this invention is movable to an open position when small vehicles are not being stored in the garage, enabling the garage to be used as living space as well.

Abstract: A seal including a body with a longitudinal axis X that includes a base-piece having a first end and an opposed second end, two opposed side walls connecting the two ends, and two shoulders located on either side of each of the two side walls and at one of the ends. The body is made of a single flexible material and, in a section perpendicular to the X axis, the width of the base-piece, from one side wall to the other, in the vicinity of the end on the opposite side from the shoulders is larger than the width of the base-piece, from one side wall to the other, in the vicinity of the end near the shoulders.

Abstract: A seal assembly is provided for a side-by-side or French style door on a refrigerator in which the sealing gasket is supported on a gasket carrier and pivotably coupled to a base member adapted to be secured along the medial vertical edge of a refrigerator door. A set of magnets are supported by the gasket carrier opposite the gasket. These magnets are arranged such that similar poles are adjacent one another when the doors are in the closed position. The magnets provide a repelling force which operates to rotate the gaskets into sealing engagement with one another.

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: The present invention is directed to a refrigerator. According to an aspect of the present invention for solving the above problems, there is provided a refrigerator including a refrigerating chamber formed at a relatively upper portion of a refrigerator body and a freezing chamber formed at a relatively lower portion of the refrigerator body, which comprises an ice-making chamber which is partitioned in the refrigerating chamber by means of insulating walls and includes an icemaker for making ice and an ice storage for storing the ice made in the icemaker, a first heat exchanger for generating cold air to regulate the temperature in the ice-making chamber, and a second heat exchanger for generating cold air to regulate the temperature in the freezing and refrigerating chambers, wherein the first and second heat exchanger are components of a heat exchange cycle.

Abstract: A lock member that pivotally engages a slide bolt movement member connected to a slide bolt of a locking astragal and that is moveable between locked and unlocked positions includes a user engagement portion and a lock portion. The user engagement portion is substantially flat and adapted to be flush with an outer surface portion of the slide bolt movement member when the lock member is in the locked position and the unlocked position. The lock portion is positioned opposite the user engagement portion, and has an unlocked side that is substantially flat and a locked side having an arcuate shape. The arcuate shaped lock side is positioned adjacent an interior portion of the slide bolt movement member when the lock member is in the locked position, and the substantially flat unlocked side is positioned adjacent the interior portion of the slide bolt movement member when the lock member is in the unlocked position.

Abstract: An astragal includes an elongate member having a slide bolt receiving passageway formed therein, and a slide bolt carried by the elongate member that is moveable between a locked and an unlocked position. The astragal also includes slide bolt movement members connected to the slide bolt, a stiffener carried by the elongate member, and an elongate cover member that matingly engages the elongate member to overlie the slide bolt receiving passageway at the stiffener so that end portions of an upper wall of the elongate cover member are flush with an upper wall of the elongate member.

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 weather strip for hinged double doors, which is to be attached to a door fitting portion of an earlier-closed door of hinged double doors including a pair of left and right, earlier-closed and later-closed doors disposed in a rear portion or a side portion of a vehicle.

Abstract: An astragal used with exterior double door installations, such as french doors. When attached to the edge of the generally inactive door, the astragal provides a door stop for the active door, a seal to prevent intrusion of water, and a lock for the inactive door. The invention particularly pertains to extruded metal astragals capable of increasing the resistance of the double door system to high wind conditions. The astragal comprises a longitudinally extending base member that has at least one longitudinally extending channel and a pair of spaced apart outwardly extending legs. At least one bolt is slidably inserted in the channel adjacent to one of the first and second ends of the channel. The astragal is attached to the door by at least one cleat whose spaced apart arms engage the legs of the base member providing resistance to the astragal rocking in relation to the door edge when the doors are under wind forces.

Abstract: A door or window unit adapted for use in a sliding or window assembly wherein said door or window unit includes an infill panel or panels (4) housed in a surrounding frame (3) characterised in that said panel is fined substantially flush to a face surface of said frame.

Abstract: A mine door system including at least two doors positioned in a mine passageway in spaced relation forming an airlock. The doors include at least one leaf movable between open and closed positions to allow passage into and out of the airlock. A control system controls operation of leaf movement actuators such that in normal operation, at least one door is always closed to control flow of air in the mine. A power source is included to effect movement of the leafs by the actuators.

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: A weather strip for hinged double doors, which is to be attached to a door fitting portion of an earlier-closed door of hinged double doors comprising a pair of left and right, earlier-closed and later-closed doors disposed in a rear portion or a side portion of a vehicle, which weather strip comprises: a seal portion which is brought into elastic contact with a side end of said later-closed door to thereby seal off an interior side of said vehicle from an exterior side of said vehicle; a flipper-like seal piece molded integrally with an upper end portion or to each of upper and lower end portions of said weather strip, so that a vehicle-interior-side wall surface of said seal piece is brought into elastic contact with a body-side weather strip attached to a circumferential edge of a body-side opening portion when said earlier-closed door is closed, and a vehicle-exterior-side wall surface of said seal piece is brought into elastic contact with a door-fitting-portion-side corner portion of said later-closed d

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: A rear door assembly for a truck cap for mounting onto a truck bed is provided with a specially modified plate disposed at a lower edge of the rear door of the truck cap for cooperatively engaging protective ribs that are disposed on upper ends of tailgates of late model trucks. The enclosure plates disposed on the rear doors of the truck caps extend outwardly and downwardly so as to conform to the general shapes of said currently-available tailgate protector ribs. The enclosure plates enable the rear door to close fully and provide the requisite engagement between the lower end of the rear door and the upper end of the tailgate so as to prevent moisture and dirt from entering the inside of the truck cap.

Abstract: An improved sealing device has a base platform supporting at least an inner sealing member and an outer sealing member. The outer sealing member has a main body portion of substantially uniform thickness along its height, which is taller than the inner sealing member. The improved sealing device can be used to seal the edges of doors that close the opening of a comb-style rear frame of a container, especially wherein the doors are mounted on universal hinges. Each universal hinge has a leaf portion defining a plane surface disposed to face the exterior surface of the door. Each hinge also has an off-set rearward portion, a normal leg and a parallel leg, wherein the hinge is configured such that each of the plane surface of the leaf portion and the edge of the door is disposed in a particular relationship when the door is closed.

Abstract: An apparatus for increasing the ability of a "double-door" door assembly to withstand stresses caused by high winds and flying debris associated therewith. The door assembly includes first and second doors. The first door has a first pivot stile for pivotally coupling with the first door jamb, and a first meeting stile. The second door has a second pivot stile for pivotally coupling with the second door jamb, and a second meeting stile. The first meeting stile has a greater depth, measured in a plane normal to the plane of the first door, than the remainder of the first door. Similarly, the second meeting stile has a greater depth, measured in a plane normal to the plane of the second door, than the remainder of the second door.

Abstract: An improved astragal assembly for use with a double door installation includes an astragal strip secured along the vertical edge of the inactive door. A lock block is slidably disposed in at least one end of said astragal strip and can be moved between an extended position for securing the door and a retracted position for freeing the door. The lock block has a projecting bolt receivable in a receptacle in the door frame when the lock block is slid to its extended position. A gasket is secured to the end of the lock block and the bolt passes through an opening in the gasket. The gasket engages and seals against the door frame when the lock block is in its extended position. Gaskets are also provided on the sides of the lock block for engaging and sealing against the doors of the double door installation. When the doors are closed and secured in place, the lock block and gasket assembly prevents drafts from flowing under the door installation beneath the astragal thereof.

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: In a double door assembly in which first and second doors are respectively mounted to bilateral vertical frame members of a door frame in the manner that each door can swing both to the indoor side and to the outdoor side for its opening and closing, a structure of mating portions of the doors comprises a first mating frame element constituting the first door and providing a first mating surface, a second mating frame element constituting the second door and providing a second mating surface, a first mating seal member attached to the first mating surface to project toward the second mating surface and a second mating seal member attached to the second mating surface to the indoor side relative to the first mating seal member to project toward the first mating surface.

Abstract: An astragal formed as a part of an extruded door sash is described. The astragal is formed integral with the door sash as an elongated forwardly projecting member constituting an astragal base. An elongated detachable cap is releasably secured to the base member and extends forwardly thereof. A core member is disposed internally of the door sash and projects along the outer end edge portion of the sash and at least in part within the astragal. The astragal base member and the door sash form a unitary member.

Abstract: A refrigerator display case having a plurality of insulated glass window panels mounted in side-by-side relation for pivotal movement about an upper horizontal pivot axis. Each of the window panels has a substantially all glass front appearance, unencumbered by external hardware, trim or moldings. To achieve such appearance, the upper spacer element of the window panel is in the form of a pivot bar completely concealed by an outer glass pane of the panel, but which has an exposed underside mounting surface to which a hinge plate is connected. Each window panel has side sealing members secured to respective side spacers and with a blade portion extending outwardly from the peripheral edges of the glass panes of the window panel for side-by-side sealing engagement with the side sealing members of adjacent window panels when the window panels are in a closed position.

Abstract: Disclosed is a door sealing mechanism for sealing the gap between two doors or that gap between one door and the doorframe so as to prevent leakage of the inside conditioned air to the outside or entrance of the outside dust, smoke, and insects into the room. The sealing mechanism includes a blocking mechanism enclosed in a sidepiece provided on the first door and consisted of a blocking member, a movable member supporting the block member, and elastic element means coupled to the movable member. On the opposite side, a curved recess or a cushioning mechanism is provided that receives the blocking member. When the door unit is closed, the blocking member comes into air-tight contact with the curved recess or the cushioning mechanism due to the elasticity of the elastic element; and when opening the door unit, the blocking member can slide away smoothly. Furthermore, with the provisions of bumping members, noises generated by metal collisions when opening or closing the door unit is substantially eliminated.

Abstract: A door seal has a base portion comprising straight sections joined at their ends to form corner joints with another section, at least four first seal sections each of which are disposed at a respective one of the corner joints, and a plurality of second seal portions each having a length that extends between a spaced pair of the first seal sections. The first seal sections comprise a pair of spaced lip seals, whereas the second seal sections comprise a lip seal and a compression seal. The seal avoids the problem of undesirable compression seal distortion at the corners joints.

Abstract: A cabinet has overlapping doors to cover a cabinet opening. The overlapping doors include sealing gaskets formed on interior surfaces of the doors. The doors are shaped for the gaskets of the doors to overlap and abut in sealing engagement upon closure of the doors.

Abstract: A refrigerator has a body forming a compartment, and first and second doors mounted in side-by-side relationship on the body for closing the compartment. Each door is hinged along an outer vertical edge thereof such that the inner vertical edges of the doors face one another and form a gap when the doors are closed. In order to prevent cool air loss through that gap, a leak prevention member is hinged on the back side of the first door for rotation about a vertical axis. When the first door is closed, a pin on the leak prevention member engages a guide groove formed on the body for rotating the leak prevention member to an operative position in which it extends across the gap to resist cool air leakage. A locking element carried by the leak prevention member locks the leak prevention element against rotation to its operative position while the first door is open.

Abstract: A weatherstrip is provided for an automobile adapted to be mounted on a center pillar thereof. The weatherstrip includes front and rear hollow seal portions having a mounting base and front and rear sealing walls, respectively. A partition wall is provided having an inverted V-shaped section such that its apex projects in an outer direction. The partition has opposite ends connected to the mounting base and is formed in a space of each of the hollow sealing portions. The sealing walls are supported by the apexes of the partition walls when the partition walls are depressed by a closing door glass.

Abstract: An acoustic door system including an improved peripheral seal and a lower adjustable seal. An acoustic door swings on camming hinges which raise the door upon opening. A lower vertically adjustable U bracket has a lower neoprene sealing strip which contacts the threshold of the door frame. The peripheral seal has a portion compressed between the marginal edge of the door and frame and a portion compressed between the door panel and frame, providing acoustical sealing between the frame and two perpendicular surfaces of the door. In another form, an improved astragal gasket is compressed in the central gap between a pair of doors, the gasket also contacting an inner panel of both doors.

Abstract: A door construction with an improved locking channel assembly has a pair of doors with vertical edges pivotally hinged to a frame and opposing closing edges including an improved interlocking locking channel assembly. The interlocking assembly has first and second elongated locking channel elements lying within the plane of the doors. The locking channel elements extend substantially the height of, and are pivotally attached along respective vertical axis of an associated edge of a door. One locking channel element carries an adjustable elongated tongue. The other elongated locking channel element is adapted to receive the protruding portion of the tongue in interlocking relationship.

Abstract: An easy to assemble and install astragal is provided consisting of an exterior aluminum extrusion and an interior wooden portion. The exterior extrusion includes a pair of rearwardly extending center walls which form a channel for receiving the wooden interior portion. Attachments and door hardware can be conveniently installed in the wooden interior portion while the extruded exterior acts as cladding for durability.

Abstract: An angulated door assembly affording reduced entry and exit time and motion therethrough. Each door is angulated relative to the adjacent walls and/or the conventional path of ingress/egress therethrough. Such an assembly configuration affords increased sealing capacity as well as convenience for the user. The door opens and closes faster by swinging less than a conventional door, which presents itself orthogonally to the path of ingress/egress. By utilizing a pair of angulated doorways, the doors self-seal against each other while providing the advantages of angulated disposition relative to the path of ingress/egress.

Abstract: A magnetic seal is disclosed for releasably sealing two doors arranged side by side on a thermally insulated cabinet such as a refrigerator or freezer. A retainer gasket is affixed to the inner edge of each door. One of the retainer gasket encloses a magnet and retains the magnet fixed in place relative to the door. Another retainer gasket is affixed to the other door and is formed of a base, a sleeve enclosing a second magnet, and two flexible webs connecting the sleeve to the base. The retainer gaskets and magnets are arranged so that the magnets impart an attractive force on each other and releasably seal the doors. When one of the doors is opened slightly, the magnets are arranged to repel each other and assist in easily opening at least one of the doors. Finally, a magnet having more than two magnetic poles may be used to assist in sealing and opening at least one of the doors.

Abstract: A door structure, particularly for freight vans, includes a pair of oppositely pivotal door panels in which a first of the door panels overlaps and engages the second door panel in a sealed, closed position of both the door panels, and in which the first door panel includes first and second panel portions. The first, medial panel portion of the first door panel is pivotally mounted on the second panel portion and arranged to define the overlap of the second door panel to enable pivotal opening of the first panel portion from the overlapping closed position and thereafter to enable pivotal opening of the second door panel without requiring pivotal opening of the second panel portion of the first door panel. Thus constructed, either of the second door panel and the second panel portion of the first door panel can be independently, pivotally opened.

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.