Abstract: A door-casing element comprises an elongated inner metallic profile, an egated outer metallic profile parallel to and spaced outwardly from the inner profile, an elongated thermally relatively nonconductive connector between and engaging both of the profiles, and ratchet formations securing the profiles in spaced-apart relationship to the connector. The inner and outer profiles are spaced so it is possible to form them of aluminum, which can be made with an attractive anodized finish and which can be used in outdoors applications without danger of rust. The thermally nonconductive connector, which can be made of rigid and fire-resistant gypsum fibers, will not transmit heat effectively between the two profiles so that the resultant casing can easily be of high firecode rating.

Abstract: A hinge for a door comprises a pair of hinge members, one of which is affd to the door frame while the other is attached to the door panel. The hinge elements are each formed with an attachment flange provided along an edge with a pivot sleeve which is in axial symmetrical alignment with the flange. The flange is formed with holes for the fastening screws and one of these holes at the center of the flange with the other holes being oriented in mirror symmetrical relationship so that the hinge element on the door can be rotated about the center provided by the central hole to assume positions for either left-handed or right-handed mounting. The pintle has a collar or shoulder between two plug-forming portions which fit into the sleeves of the two elements.

Abstract: A heat exchanger has a heat-exchange plate having an edge and formed with a lurality of parallel spaced-apart longitudinal passages opening at the edge and with a plurality of transversely throughgoing plate holes at the edge between the passages. A manifold pipe formed with a row of manifold holes all opening in the same direction and spaced apart the same as the passages at the edge can be fitted to the plate with the plate edge over the row of manifold holes so that each of the passages is aligned longitudinally with a respective one of the manifold holes. A pair of L-section guides fixed on the pipe flank the row of manifold holes and define a gap corresponding to the shape of the plate at the edge. These guides are formed between the manifold holes with laterally throughgoing guide holes transversely alignable with the plate holes when the edge is fitted over the row of manifold holes.

Abstract: A device for mounting a door in a door opening defined by at least one wall dge, e.g. for a desk, cabinet or building structure, comprises a door frame member in the form of a U-profile which straddles this edge and is affixed thereto. According to the invention, on the edge turned toward the opening, the wall is provided with a mounting element having a rib projecting in the direction of the opening which is clamped against a retaining profile received within the frame member by the movement of a wedge by a screw which is inserted through a hole in the frame member and has its head located within a rabbet for the door set into the frame member. The retainer also has a flange which cooperates with a clamping member actuated by another screw located at the rabbet to engage a shank of a hinge pin or like element.

Abstract: A clamping device for clamping a structure, such as a door or window case, nto a frame of substantially U-shape cross-section, and which has an inner web wall with an offset portion and a sidewall on each side, comprises, a clamping body of substantially U-shape cross-section. The clamping body has a back web wall adapted to be secured to the structure and a leg wall on each side of the web wall which extends outwardly therefrom. At least a portion of the length of each of the leg walls is resilient so that it may be bent inwardly or outwardly. The substantially U-shaped abutment has a back abutment wall which is adapted to be slidably engaged into a receiving groove at the offset portion of the frame. It includes an abutment sidewall on each side which is disposed alongside the respective ones of the leg walls. A clamp member is movably disposed between the side leg walls of the clamping body and it is displaceable to move these walls into clamping engagement with the sidewall of the abutment.