Abstract: A door assembly, and method of constructing same, including a door, and a wall panel having an opening sized to receive the door. The door is mounted in the opening of the wall panel on concealed, tamper-proof pivot hinges. The pivot hinges are held captive to the door via elongated fasteners during assembly, with the elongated fasteners subsequently functioning as concealed pivot pins about which the door is swingable.

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 vertically adjustable lower hinge assembly for a center-hung door, such as for use on a refrigerator or freezer. The lower hinge assembly is adjustably fastened to the door frame. Beneath the lower hinge assembly is an adjustable support member in the form of a cam plate that is also fastened to the door frame. The support member is used for raising or lowering the lower hinge assembly, and in turn changing the elevation of the door. The support member also reinforces the holding power of the fasteners of the lower hinge assembly.

Abstract: The invention concerns an entrance- or passage door, especially for shower stalls, with frame and door plate, whereby the frame designed from rustproof material for width adjustability on the upper- and bottom surfaces consists of telescoping profile portions adjustable telescopically and then lockable and at least one longitudinal side has holders for mounting a fixed door panel, and installation arrangements are provided on the upper and bottom surfaces of the frame for suitable pivots adjustable on a hinged door panel portion.

Abstract: A hinge means for a pivotable window includes a link, formed as a casing and enclosing two meshing gears connecting two pivots, of which one is adapted to be attached to the casement, and the other is adapted to be connected to the frame. These gears will govern the movement of the frame with respect to the link, and the movement of the link with respect to the casing, so the frame will swing about twice as much in relation to the casing as the link will do. Both gears cooperate with braking members at the link, so a continuous braking force is at hand all during a 180.degree. turn of the frame. The attachment for the link at the frame includes a fitting and a fitting plate, having hook means and mating grooves, respectively shaped to ensure a safe retention of the frame in the casement, but permitting an easy mounting and dismounting of the frame.

Abstract: This is a door mounting consisting of a pair of hinges, each hinge having a component for mounting in the frame and a component for mounting on the door. The top hinge has a member for the door with a part-spherical recess for a corresponding head on a pin depending from the member on the frame so that the pin acts as a universal joint which can support the whole weight of the door. The lower hinge comprises depdning pins from the bottom edge of the door and a plate for sinking in the floor and having two arcuate slots, one for each of the depending pins. One or other pin defines a lower pivot point to one side of the top hinge axis and the other runs on its arcuate slot. The door can open either way and has a self-closing force.

Abstract: A pivot arrangement at the upper end of a pivot door includes a bushing on the door and a hollow pivot pin projected from the door frame header into the bushing. Fluid conduits are connected with the pin and the bushing so that the conduits are in communication through the pivot arrangement. Pressurized air is transmitted through the conduits and pivot arrangement to a pneumatic appliance on the door.