Abstract: A tennis training device is provided, comprising a support bar which is swivelable between a first and a second stop in its longitudinal direction, wherein at the free end of the support bar a ball is mounted by means of a connecting ember, which is releasably fixed by means of a fixing means. Furthermore, the invention relates to different embodiments of a training unit.

Abstract: The invention relates to a tennis training apparatus, comprising a support bar (5) joined in an articulated manner to a base (B, 6) and pivotable between a first (8) and a second stop (9) and which supports in a pivotable manner a profiled rod (3) protruding from the support bar (5), at the free end of the profiled rod (3) a ball (1) is rotatably supported, wherein the second stop (9) in direction of stroke is pivotably supported against a force.

Abstract: A tennis training device is provided, comprising a support bar which is swivelable between a first and a second stop in its longitudinal direction, wherein at the free end of the support bar a ball is mounted by means of a connecting ember, which is releasably fixed by means of a fixing means. Furthermore, the invention relates to different embodiments of a training unit.

Abstract: The invention relates to a tennis training apparatus, comprising a support bar (5) joined in an articulated manner to a base (B, 6) and pivotable between a first (8) and a second stop (9) and which supports in a pivotable manner a profiled rod (3) protruding from the support bar (5), at the free end of the profiled rod (3) a ball (1) is rotatably supported, wherein the second stop (9) in direction of stroke is pivotably supported against a force.

Abstract: The invention relates to a manual drilling or milling apparatus with a suction device, especially for cutting windscreens of motor vehicles, comprising a housing fixed at the drilling or milling head in which a radial impeller is rotatably supported which can be driven by the drilling or milling head, a suction pipe which is telescopically adjustable at the housing and through which the drill or milling cutter extends, and a catchment tank connected to the housing.

Abstract: The invention relates to a drilling and suction apparatus having a gripping device, especially for opening shock absorbers, spring struts and the like by drilling, comprising a housing having a longitudinal bore for housing a tension bolt which engages with a threaded spindle drivable in both rotating directions by a driving means, wherein at the front end of the tension bolt gripping claw is fixed. and wherein at the housing a holder for the drilling and suction apparatus is formed.

Abstract: Device for siphoning off fuel from motor vehicles to be scrapped, comprising a tank drilling device, a pump and two circuit valves, a storage tank and a pump nozzle, wherein the circuit valves are switchable between tank drilling device and pump such that the pump conveys fuel from the tank drilling device to the storage tank or from this to the pump nozzle, and wherein the device is provided with a compressed-air connection and the tank drilling device and the pump and the circuit valves are operable or switchable by compressed air.

Abstract: The invention relates to a closure cap, especially for closing a screw neck of an oil filter connection in motor vehicles. An elastically expandable nut element (5,20) is arranged in the closure cap. Said nut element is such that it can be placed on screw necks (3) of various diameters, engaging with the outer thread of the screw neck.

Abstract: A mobile draining station for motor vehicles is disclosed, comprising a container whose side wall and upper wall can be lifted up and in which carrier arms for receiving a vehicle are arranged in a stationary manner. Pivoting arms for removal devices are pivotably connected to the rear wall of the container and at least one door element is embodied in the rear wall and can be folded downwards in order to extend the base of the container. Collectors are positioned in the container in the region in front of the door element. The collectors can move through the door opening onto the folded-down door element.

Abstract: A mobile draining station for motor vehicles is disclosed, comprising a container (1) whose side wall and upper wall can be lifted up and in which carrier arms (6) for receiving a vehicle are arranged in a stationary manner; pivoting arms (13) for removal devices pivotably connected to the rear wall (7) of the container; and at least one door element (8) which is embodied in the rear wall (7) and which can be folded out downwards in order to extend the base of the container. Collectors (10) are positioned in the container in the region in front of the door element. Said collectors can move through the door opening onto the folded-down door element.

Abstract: The invention relates to a closure cap, especially for closing a screw neck of an oil filter connection in motor vehicles. An elastically expandable nut element (5,20) is arranged in the closure cap. Said nut element is such that it can be placed on screw necks (3) of various diameters, engaging with the outer thread of the screw neck.

Abstract: A device for removing liquid from a closed cavity, such as from a shock absorber of a motor vehicle, is proposed; the device compresses a drill, which is guided displaceably in a guide housing, a preloading device at one end of the guide housing for displacing the drill in the guide housing, an intermediate piece at the other end of the guide housing, the intermediate piece having a central bore for the drill bit to pass through and at least one fluid connection on the outer circumference for the removal of liquid, and compressing a gripping device, which is fitted to the device and fixes the latter to the wall of the cavity to be emptied.

Abstract: The testing instrument for pipes or other cavities to be tested as to tightness includes an at least partially conical rubber plug, at each of the opposite ends of which supporting plates are provided. A pipe which extends through the rubber plug is rigidly connected to the supporting plate at the end having a smaller diameter and is passed through the other supporting plate so as to be movable. A protruding section of the pipe is provided with a thread and a pedestal is screwed to the threaded section. Two eccentric levers are tiltably mounted to the pedestal diametrically opposite each other and rest on the supporting plate at the larger diameter of the rubber plug. A crown member is provided on the pipe, to which a CO testing apparatus is connected. Variations of the rubber plug are disclosed, with which various openings which are difficult to seal can be securely sealed.

Abstract: To facilitate the testing of a fluid-containing system while the system is pressurized, using a method which includes stabbing a testing apparatus into an access opening of the system and sealingly securing the apparatus in the opening, the invention provides an improved testing apparatus which can be easily removably sealingly mounted in a sizeable range of opening diameters, without a need for repetitive tentative installation, removal adjustment and reinstallation steps, and without placing unbalanced bending stress on the perimeter of the opening.