Abstract: In a dental, dental-medical or dental-technical handpiece, having an elongate grip sleeve there are provided at the rearward end of the grip sleeve coupling elements for the connection of the handpiece to a supply hose to be connected with a dental supply arrangement, and there are provided at the forward end of the grip sleeve a head section with a tool receiver for mounting a tool to be put into rotation. The handpiece further has an electric motor for driving a tool held by the tool receiver, which motor is completely integrated into the grip sleeve such that grip sleeve and motor form a unit.

Abstract: A device for packaging and dispensing several fluid products includes at least two sealed flexible gags arranged in a single rigid container, associated with at least one pump, the rigid container consisting of an open cylinder and the bags are provided each with a pump and a push button, and are mounted opposite on each of the two opposite openings of the cylinder. The device is applicable to appliances containing fluids to be dispensed independently of one another.

Abstract: A dental hand instrument having an elongate handle sleeve, at the front end of which there are disposed means for holding a treatment tool, for example a dental drill, there are disposed inside the handle sleeve means for driving the treatment tool, which driving means have at least two rotatably mounted shafts that are coupled to each other, a sealing element being disposed in the coupling region of the two shafts inside the handle sleeve.

Abstract: In an electric motor for use in a handpiece for dentistry, dental medicine or dental technology, with a rotor held rotatably by a bearing arrangement, and a stator surrounding the rotor, a bearing arrangement has a first bearing located on an end region of the rotor, and a second bearing located on an opposite end region of the rotor, which second bearing is constructed as a movable bearing and is biased in the direction of the first bearing by a spring arrangement. The spring force of the spring arrangement within an operating region is substantially independent of the position of the movable bearing.

Abstract: The rotor for an electric motor used with a dental handpiece has a shaft with a rotational axis and a magnet arranged around the rotational axis. A centering element may be rigidly connected to the shaft or constructed as part of the shaft. The centering element presses on the magnet from the outside to center it in relation to the rotational axis of the shaft. The centering element may be pressed or shrunk on to two balancing rings. The balancing rings can be pressed or shrunk on the shaft. This allows precise centering of the magnet with respect to the rotational axis of the shaft to be achieved. The pressure exerted by the centering element on the magnet counteracts centrifugal forces during rotor rotation. Particularly high speeds may be achieved without the surface of the magnet exceeding a critical tensile stress.

Abstract: A device for further processing a fluid material, particularly a care device for medical or dental tool holders, the material being stored in a tank under pressure, the device having a coupling fixture having an adapter forming a screw connection to the tank under pressure, the adapter of the coupling fixture being pivotally supported.

Abstract: In the case of a motor element, in particular of dental technical handpiece or a motor spindle, which at least in its front region has an elongated shank, rotatably mounted in which there is a hollow drive shaft, arranged in whose front end region there is a collet chuck for a tool that is connected in its rear end region by means of a coupling to a rod that extends towards the rear and is pretensioned towards the rear or towards the front by means of the force of a spring and can be displaced towards the front or towards the rear against the force of the spring by means of an actuating mechanism, with the spring being stayed on the draw rod towards the rear and being stayed against an inner first shoulder of the drive shaft towards the front, arranged at the front end region of the spring there is at least one supporting element that is elastically pretensioned radially outwards and springs out behind the shoulder when the draw rod is pushed with the spring from the front into the drive shaft, and the suppor

Abstract: The invention concerns methods and a device for the determination of the centric position of a human set of teeth with improved precision. This is needed for the adjustment of an articulator in the production of dentures. For this purpose a plurality of successive bite movements or displacement movements of the lower jaw are recorded in form of electronic signal data and evaluated for the determination of the centric position.

Abstract: In a dental, dental-medical or dental-technical handpiece, having an elongate grip sleeve there are provided at the rearward end of the grip sleeve coupling elements for the connection of the handpiece to a supply hose to be connected with a dental supply arrangement, and there are provided at the forward end of the grip sleeve a head section with a tool receiver for mounting a tool to be put into rotation. The handpiece further has an electric motor for driving a tool held by the tool receiver, which motor is completely integrated into the grip sleeve such that grip sleeve and motor form a unit.

Abstract: The invention relates to a medical tool for cutting a hard material wall, having a shaft which has over at least a part of its length a working region which upon vibration or rotation develops an abrasive effect. So that a handling-friendly continuous cutting of the hard material wall is achieved, there is arranged at the forward end of the shaft a flat guide sliding element projecting laterally from the shaft and intended for engagement below the hard material wall, which element is constituted smoothly at its upper side.

Abstract: A medical or dental-medical handpiece has in its forward end region a lateral insertion opening for a tool and, lying opposite to the insertion opening, a mounting opening with an insert part, which can he placed therein, and a push button which is mounted displaceably between an outer initial position and an inner release position and is biased into its initial position by a spring force. The pushbutton is supported with at least one stop arranged thereon on at least one counter stop in its intial position. The insert part is arranged sunk into the mounting opening and the pushbutton engages in the mounting opening with slight play for movement.

Abstract: In the case of a treatment device, in particular a dental treatment instrument, having a tool, such as a dental drill, driven by a drive unit, and a conduit for delivery of a cooling medium to a treatment site worked by the tool, the quantity of the cooling medium delivered to the treatment site is dependent upon the removal power of the tool or upon the torque exercised by the tool.