A fitting to be detachably fastened to a furniture part includes a fitting body to abut the furniture part, at least one dowel-like expansion sleeve which is anchored to the fitting body and which can be inserted into a drilled hole of the furniture part, and a pin shaped expansion member for expanding the expansion sleeve. The expansion sleeve projects through an opening in the fitting body, and the expansion sleeve also projects through the opening in the fitting body. The expansion sleeve is provided with at least one flap that projects in a radial direction from the expansion sleeve. The expansion member is provided with a head, which, when the fitting is mounted, presses the flap onto the side of the fitting body which faces away from the furniture part.
A fitting to be removably fastened to a furniture part includes a body, at least one expanding plug anchored in the body, and a pin-shaped expansion part. The body has a projecting supporting throat to protrude into a cavity in the furniture part. The supporting throat has at least one recess into which a projection on the expanding plug extends.
A fastener for connecting plate members includes a male member, and a female member to be inserted into mounting holes of the plate members. The female member includes a cylinder body for receiving the main body therein, a projecting portion formed on an outer periphery of the cylinder body at one end thereof, and protruding portions formed at the other end thereof. A first engaging portion is formed on an outer surface of a main body of the male member or an inner surface of the cylinder body, and a second engaging portion engaging the first engaging portion is formed on the inner surface or the outer surface. The second engaging portion has two engaging sections and a smooth surface portion interposed therebetween. When the male member is inserted into the female member, the male member can be easily engaged with the female member.
A spreader dowel includes a sleeve having an area formed with an internal first thread for engagement by a screw. The sleeve has opposite ends and includes first longitude slots on one end for defining an expansion zone. A spreader piece formed with a conical portion is connected to the screw and spreads the expansion zone, when the screw is inserted. The sleeve has second longitude slots which extend inwardly from an end face on the other end. In the region of the second longitude slots toward the end face, the sleeve has a zone which is formed with an internal second thread defined by a thread diameter which is smaller than a thread diameter of the screw while having a same pitch as the thread diameter of the screw, or is threadless with a clear diameter which is smaller than an outer diameter of the screw.
A method of manufacturing of an expansion sleeve including providing a sleeve blank having axially extending material weaknesses (9), and forming the longitudinal slots (5) by tearing open the material weaknesses (9) by substantially radially expanding same.
A device (2) for fixing bone sections separated because of a fracture comprises a plate (4) with bores (8) for the fastening to a bone, a plurality of internally hollow barrels (10), screwed in the bores (8) of the plate (4) and a plurality of compression screws (6) adapted to be screwed in the bone and then locked in the barrels (10).
