Abstract: A 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 apparatus for sealing a movable closure member about an access aperture located within a rigid structure. The movable closure member is sized to cover the access aperture and to provide access through the access aperture when open. A resilient elastomeric gasket is secured to one of the rigid structure or the movable structure to suit design and manufacturing preference. The resilient elastomeric gasket has a hollow cavity disposed within the elastomeric gasket, and the hollow cavity is sealed at each end to form a pressure-equalizing chamber therein. A convex protrusion is positioned on the elastomeric gasket to confront a flat stop positioned upon the other of the rigid structure or the movable structure when the movable structure is closed. A closure means is provided to bias the convex protrusion against the flat stop face with sufficient pressure to partially deform the resilient, elastomeric gasket.

Abstract: A refrigerator having French doors, a partition which is rotatably supported by one door thereof and comes in contact with the non-supporting side of said two doors when the doors are close and a housing part which prevents a user from rotating said partition by mistake when said one door is open by housing and holding said partition in said housing part when said door is open.

Abstract: A double door installation includes an astragal which is removably mounted in the head jamb and sill portions of the door frame independently of the doors, but the combination includes a locking mechanism in one door which incorporates a bolt arranged to project through the astragal into the other door to effect firm locking of both doors to each other and to the astragal.

Abstract: An insulating member for installation on double doors comprising a flat flange member adapted to be secured to one of the doors and a resilient deformable portion on the member extending below the door on which it is mounted and providing sealing insulation when the other door is closed with respect to the door on which the member is installed. Fingers extending from a deformable section may extend the same or different distances.

Abstract: A compression-sealed door assembly for use in controlling air flow pressure levels within a supersonic jet nacelle inlet, wherein substantially U-shaped strips of resiliently compressible material is compressed between a door and the nacelle inlet to seal air flow passageways through the inlet when the door assembly is pivoted to its fully closed position.

Abstract: A weatherproof structure for a double-door closing of an unobstructed door opening has an uninterrupted, continuous, gutter along the top of the door opening. The continuous channel or gutter has an open side facing outwards with the open side having a low wall. A channel at the inner edge of a first door has an open side facing outward, the channel extending inward from the outer surface of the door, the door also having an inturned upper edge. A second door has an inturned upper edge and inner edge, the inturned inner edge entering the channel at the inner edge of the first door. A recess extends into the channel at the inner edge of the first door, from an inner surface, the recess admitting the low wall of the continuous gutter or channel. A slot in the inturned inner edge of the second door fits over the recess in the channel at the inner edge of the first door. Gaskets can be provided to enhance sealing. The structure can be repeated for the bottom of the door opening.

Abstract: An improved astragal for use in a double door assembly having an active door and a relatively inactive door is disclosed. The astragal has a vertically extending mullion housing which is attached to the free edge of the relatively inactive door. A vertically extending slide section is mounted on the mullion housing on the sealing side of the free edge of the inactive door. The slide section extends from the free vertical edge of the inactive door when the active door is in the closed position. The slide section is vertically movable from an unlocked position to a locked position wherein the slide section is moved vertically downward with respect to the mullion housing to engage the sill/threshold of the door frame, thereby preventing any movement of the inactive door.

Abstract: A channel is formed between the inner and outer walls in each meeting edge of the doors in a double swinging door installation, and an elongated leaf is pivotably mounted in the channel of each door and extends substantially the full height of its door. Each leaf is pivotable in its channel between a first position adjacent the outer wall of its door where the leaf protrudes out of its channel toward engagement with the leaf of the other door, and a second position away from the outer wall of its door in which the leaf is substantially retracted into its channel. Coil torsion springs urge the leaf of each door toward its retracted position, and a door stop is located in the door frame at the meeting edge portions of the doors for urging the leaves of the doors toward their protruding and engaging positions when the doors are in their closed positions.

Abstract: A weathertight door assembly having a first sealing means on an outer frame for sealing the gaps between the outer frame and the periphery of a pair of doors when the latter is closed, and a pair of coacting second and third sealing means on one of the doors for sealing the gap between inner vertical frame members of the doors when the latter are closed. A projection extends on and along one of the inner vertical frame members for covering the gap between the doors when the latter are closed. The second sealing means is supported on the projection and coextends with the length therewith. The third sealing means is supported on the said one inner vertical frame member and coextends with the length thereof. As the doors are closed, the third sealing means is sandwiched partly between the second sealing means and the other inner vertical frame member and partly between the latter and the first sealing means.

Abstract: A safety device for a vehicle sliding door which detects any obstacle hindering the door closing movement and which cannot injure a passenger struck by the door. The door closing force is limited to a non dangerous value and the door comprises a tongue groove joint surrounded by a flexible lip joint. An obstacle is first struck by the flexible lips and only after retraction of these lips by the tongue. The presence of this obstacle hinders the penetration of the tongue into the groove and the closing of the door.

Abstract: A french door refrigerator seal having vertically extending seal elements on the juxtaposed edges of the french doors defining an air space therebetween. Closure seals are provided at the upper and lower ends of the edge seals to close the air space and thereby define an insulative dead air space between the french door edge portions when the doors are in the closed position. The closure seals illustratively may be formed as overlapping flexible flaps carried by the vertical edge seal elements which illustratively may form pairs of flexible flaps.

Abstract: An improved door suitable for use in industrial plants and other such areas where the door is to be opened and closed by objects or vehicles which strike the side of the door. The door has a hollow body provided with a monolithic construction and is formed from a moldable material which is highly resistant to impact forces exerted thereon. The body is filled with a foamed-in-place insulating material and has reinforcing means at spaced locations therein to maintain the shape of the door. Gasket structure is used at one or more margins of the door, and the door is to be swingably mounted on an adjacent door jamb.

Abstract: A traffic door biased to the closed position and adapted to be swung to the open position when pushed manually or engaged by material handling equipment. The traffic door includes an inverted L-shaped frame and a spring loaded cam mechanism is associated with the upper horizontal frame section of the frame and acts to bias the door to the closed position. Both the vertical and horizontal frame sections include a hollow rail having longitudinal recesses in opposite edges. The door panels are secured within the inner recesses of the rails by wedge-shaped strips, while channel members are secured in the outer recesses and carry a pair of weather strips which engage the jamb and header of the doorway. The outer vertical edge of each door panel is clamped within an edge seal strip which includes an outer flexible hinge section and a pair of arms having teeth or serrations which are clamped to opposite faces of the respective panel.

Abstract: An improved astragal and flush bolt assembly to be secured to a relatively stationary member such as a door jamb or to the edge of an inactive door of a pair of double doors or the like. The astragal assembly includes a flat metal body mounted on the edge of the stationary member and a metal stop member secured to the body along one edge thereof. The flat body includes first and second spaced apart legs extending outwardly from the stationary member with the flat body and legs defining a channel to receive and retain a door latch bolt from the active door. The stop member prevents movement of the door in a first direction and when the latch bolt is engaged in the channel, the channel and latch bolt prevent the door from moving in the opposite direction.

Abstract: A cargo container door construction is disclosed. The construction utilizes a relatively thin sheet metal door skin having a plurality of formed-in longitudinally extending stiffener grooves, with the door edge parallel to the grooves being formed into stiffener edges comprising a lip with a recess on its inner side. One such edge supports hinges which connect with a surrounding frame of a cargo container. The two remaining edges of each door lying perpendicular to the grooves, are each stiffened by an elongated bar and plate which are welded continuously to the edge of the skin and which form closed end walls on the grooves. The bar and plate establish edges which are similar to the lip and recess formed edges and the sides of the door, so that a uniform peripheral edge results. The lip and recess at each edge seat a gasket for sealing the door or pair of doors with a cargo container frame.

Abstract: A double door astragal is provided which comprises a rigid support member securable to the vertical edge portion of a normally inactive door, a rigid cover member securable in a plurality of positions relative to the rigid support member and mounted on the rigid support member with a U-shaped portion having an outer leg extending into the swinging path of the active door, and a flexible sealing member secured to the rigid support member and extending into the opening formed by the U-shaped portion of the cover member so as to contact the outside surface of the active door when the vertical edge portions of the active and inactive doors are in abutting relation, to provide an adjustable seal against weather.

Abstract: The specification discloses a two-piece peripheral channel gasket for a door or panel to provide a seal between the door and another door or a supporting frame. In the preferred embodiment, the channel gasket comprises a rigid channel member to be sealed to the door edge and having two spaced grooves facing away from each other for receiving two spaced connecting legs extending from a base of a flexible sealing gasket. The connecting legs extend from the plane of the base of the gasket and then inward toward each other. Each connecting leg includes an enlarged head extending from a smaller neck and having surfaces which taper toward a smaller end. Each receiving groove of the channel member has a smaller entrance portion which decreases in size to an enlarged holding zone for receiving the enlarged head of a connecting leg of the gasket.

Abstract: A sealing assembly adapted to close the gap between the swinging edge of a door and an associated member. In one embodiment the sealing assembly includes first and second generally cylindrical elements having a plurality of spaced apart teeth which extend radially outwardly from the elements, and first and second mounting means to mount the elements for free rotational movement in such a manner that they are parallel with each other and the edges of the associated structure so that when the door is closed the teeth of the first and second elements will interengage with each other.

Abstract: A door locking structure forming a panic exit device consisting of an elongated housing recessed within the leading edge of a door structure, an operating rod including latch bolts disposed in said housing, an astragal seated within a channel formed in the leading edge of said housing, link members connecting said rod and said astragal and operating means carried by said housing operating said rod to move said astragal inwardly and outwardly of said channel, a plurality of cam headed lug members carried by said rod, a plurality of studs corresponding to said cam members extending rearwardly of said astragal whereby latching movement of said rods moves said cam members to engage their corresponding studs to hold said astragal in an outward or extended dead locked position.

Abstract: A mine door system adapted for installation and a passageway in a mine, comprising a door frame adapted to be installed in the passageway and defining a doorway spaced below a ceiling of the passageway and mine doors hingedly mounted on the door frame for movement between open and closed positions. The system further comprises a top panel structure for substantially closing the space between the door frame and the ceiling of the passageway, the top panel structure being readily contractible heightwise of the passageway without loss of its structural integrity to accommodate a convergence of the ceiling and floor of the passageway without any substantial heightwise deformation of the door frame.