Abstract: A drilling device for producing drill holes with undercuts and comprising a drill bit, a drill bit holder for receiving the drill bit and having a suction chamber, and a suction bell surrounding the drill bit holder and communicating with the suction chamber therein, the stem of the drill bit having a continuous axial bore communicating with the suction chamber and a plurality of slots arranged in a region of a cross-sectional enlargement of the stem.

Abstract: A drilling device for producing drill holes having an undercut and comprising a drilling tool including a drilling shaft, a drilling head with a drilling plate located at the free end of the drilling shaft, a stop sleeve mounted on the drilling shaft and having an opening for guiding the drilling shaft, a stop collar fixedly connected with the drilling shaft and located inside of the stop sleeve, and an annular spring for securing the stop collar in the area of an opening of the stop sleeve which is located above the guide opening.

Abstract: An expansible anchoring plug assembly for anchoring objects to a supporting structure and insertable in a hole having a widening undercut portion comprises a slotted expansible sleeve pushed onto an expander cone which is inserted into the hole upon the rotation of the threaded bolt fastened to the part carrying the expander cone. The expander cone is provided at its end face with a projection or ridge which acts on the bottom wall of the hole and secures the expander cone against rotation.

Abstract: An anchoring plug for anchoring objects to a support structure includes an expansible sleeve, an expander body driven into the expansible sleeve and a screw for driving the expander body into the expansible sleeve. A ring-shaped spring member, which forms a bearing for the expansible sleeve, is positioned at the trailing end of the expansible sleeve. The spring member has the external diameter greater than that of the expansible sleeve and, may due to its properties be compressed to the external diameter of the expansible sleeve.

Abstract: A container for recording media, such as tape cassettes and the like comprising a housing which is open on at least one of its sides, a slider member arranged to carry a recording medium and insertable into the housing to an inserted position agianst a spring force which can displace the slider member out of the housing to a removal position, locking means arranged to lock the slider member in the housing in the inserted position, and a button operable for unlocking the locking means thereby allowing the spring force to move the slider member from the inserted position to the removal position, the button being pivotable and provided with an operating member which extends in a plane of movement of the slider member between the positions and formed so that the operating member pivots in response to actuation of the button so as to unlock the locking means.

Abstract: A toy building component having a connecting lug projecting from an end face of the toy building component and insertable into a matching opening of an adjacent toy building component for joining the two components together; and at least one raised portion located on the outer face of the toy building component from which the connecting lug projects to be snapped into the matching opening for fixedly joining the two components.

Abstract: A drill bit for producing drill holes with an undercut and comprising a drill bit shank, a drill bit tip mounted at an end of the drill bit shank and projecting laterally beyond the shank diameter, a rounded collar spaced from the drill bit tip and integrally formed on the drill bit shank, and a longitudinally displaceable sleeve mounted between the drill bit tip and the collar and having an internal diameter which is smaller than the diameter of the collar and the maximum width of the drill bit tip, and a method of manufacturing such a drill bit.

Abstract: An expansible plug made of a plastic material located in a drilled hole in masonry for receiving a fastening screw and comprising expansible legs having at the expansible end thereof outer notches of a reduced depth.

Abstract: An expansible sleeve storage device comprises a magazine provided with a plurality of trough-shaped holders which are arranged near one another and have elastic walls, each of the holders having at least one projection, and a plurality of expansible plugs each arranged in a respective one of the holders and having an annular groove in which the projection of a respective one of the holders engages.

Abstract: A vessel for injecting a bonding agent for anchoring a mounting element in a drilled hole comprises a housing for accommodating one component of a bonding agent and having a housing opening, an injection piston provided with an injection nozzle and displaceable in the housing, the injection piston being arranged to close off the opening of the housing, and a removable rod inserted into the injection nozzle and acting as a seal for the injection nozzle.

Abstract: A spreading plug for anchoring in undercut boreholes comprises a plug shaft, a spreading body connected with the plug shaft, a thread connecting the spreading body with the plug shaft, a plurality of spreading segments which are spreadable over the spreading body, the spreading body having an end side, a safety element projecting from the end side of the spreading body for preventing rotation, the spreading segments being formed on the plug shaft and extending in direction toward the spreading body, the plug shaft having a mounting part facing away of the spreading body, and an element for cooperating with a rotary tool and provided on the mounting part of the plug shaft.

Abstract: A toy construction kit has an angled profiled member with two arms arranged at a an angle relative to one another and each provided with a plurality of apertures for engaging with the locking pegs of adjoining components, a substantially block-shaped adapter arranged inside the angled profiled member between the arms and fixable to the angled profiled member, the adapter having free external sides provided with connecting elements for connecting further components thereto, and elements for fixing the adapter to the angled profiled member and including a locking peg engages through a respective one of the apertures of the angled profiled member.

Abstract: The composite plug for mounting objects in holes drilled in masonry and the like comprises a plug body having a screw passage for receiving a mounting screw and an expanding region expandable by insertion of the mounting screw, the plug body being provided with outlet openings for mortar introduced into the plug body, channels forming guiding surfaces in the screw passage, the guiding surfaces leading to the outlet openings and subdividing the screw passage into a front region and a rear region, and grooves forming longitudinal channels extending along an outside of the plug body, the outlet openings merging into the logitudinal channels. The outlet openings are located in the front region and the screw passage has a portion with an increased diameter. A stopper which is insertable in the portion of the screw passage of increased diameter is provided and formed as a hollow member. The stopper has openings which are in a alignment with the outlet openings.

Abstract: A container for record carriers, such as magnetic band cassettes, sound or image plates, compact discs and the like comprises a housing having lateral walls provided with longitudinal guides, the housing also having an open front end, at least one supporting element arranged in the housing, at least one slider arranged for receiving a record carrier and movable in the housing to a withdrawal position, the slider having lateral pins engaging in the longitudinal guides of the lateral walls of the housing, the longitudinal guides having at least one partial region which is provided an inclined guiding surface formed so that before reaching the withdrawal position a respective one of the pins slides along a respective one of the inclined guiding surfaces so as to press the slider against the supporting element.

Abstract: An anchoring bolt including an expansion sleeve and an expander member insertable into the sleeve to expand the latter. The anchoring bolt has an inner thread at the end which faces the end face of the wall of the supporting structure to which an object is to be fastened by the anchoring bolt. A removable spacer is inserted into the borehole of the supporting structure after the anchoring bolt and is engaged with the inner thread thereof so as to determine a distance between the end of the inserted anchoring bolt and the end face of the supporting structure. This distance corresponds to the distance that the expander member is to be drawn into the expansion sleeve.

Abstract: A mounting unit for inserting into mounting openings of power vehicles comprises a shield member having a rear side, and a plurality of clamping elements connected with the shield member and fixable to a wall which limits a mounting opening of a power vehicle, each of the clamping elements having a slotted sleeve extending from the rear side of the shield member, a threaded member, and a clamping member extending outwardly beyond the sleeve and longitudinally displaceable in direction toward the shield member in response to rotation of the threaded member.

Abstract: A drilling assembly for making boreholes with undercuts comprises a housing receiving a drill receiver driven by a drilling machine, a drill, the shaft of which is connected to the drill receiver, and a sleeve-shaped centering insert protruding from the housing and surrounding the shaft of the drill with a play and having a conical portion the outer diameter of which increases towards the housing.

Abstract: Storage container for storing magnetic tape cassettes, disc cassettes or the like, is a box-shaped hollow container which receives the cassettes to be positioned in a row one next to another with a free space therebetween in an access area. The container has stop members at the front side thereof and springs positioned in the hollow box for pushing each cassette individually independently from the remaining cassettes against the stop members.

Abstract: A fastening dowel for fastening objects to tiled plasterboard walls includes a shaft portion with expansible legs, a neck and an end flange adapted to rest against an end face of the wall. In order to prevent water from penetrating the plaster wall when the fixing dowel is used in "wet" rooms, the neck of the fixing dowel is provided with a circumferential groove which extends to both sides of the front face of the plasterboard wall, once the fixing plug has been pushed into the drilled hole, and comes to rest in the region to be sealed. A sealing composition can be injected through an injection aperture, formed in the end flange, and a longitudinal channel which opens into the circumferential groove.