Abstract: The invention relates to a height adjustable headrest device with a crossbar element and a headrest supporting element as well as a clamp connection for continuously variable mounting of the headrest element at the crossbar element. The clamp connection comprises a retaining clamp comprising two recesses as well as a tapped bore and gripping around a crossbar element, a centering bushing comprising an external thread and an internal thread, the centering bushing being screwed into the tapped bore of the retaining clamp, as well as a screw element screwed in the centering bushing. The headrest supporting element is inserted in the recesses of the retaining clamp. The crossbar element comprises a bore in which the centering bushing is inserted. The clamp connection is caused by screwing the screw element into the centering bushing and thus bringing the headrest supporting element near the crossbar element.

Abstract: An electrical hand-held tool includes an electric motor (2) having a rotor shaft (3) extending transverse to the tool percussion axis (A), a rotor sheet stack (4) supported on the rotor shaft, and a pinion (5) supported on the rotor shaft, a percussion mechanism (6) including an eccentric (7), and a drive gear (8) engageable with the motor pinion (5) for driving the eccentric (7), with the rotor sheet stack (4) being arranged, with respect to the percussion axis A, completely diametrically opposite the drive gear (8).

Abstract: An electrical hand-held tool includes an electric motor (2) having a rotor shaft (3) extending transverse to the tool percussion axis (A), a rotor sheet stack (4) supported on the rotor shaft, and a pinion (5) supported on the rotor shaft, a percussion mechanism (6) including an eccentric (7), and a drive gear (8) engageable with the motor pinion (5) for driving the eccentric (7), with the rotor sheet stack (4) being arranged, with respect to the percussion axis A, completely diametrically opposite the drive gear (8).

Abstract: A suction module for an electrical hand-held power too land including a housing (11) at least partially receivable in the battery-receiving chamber (15) of the power tool (1) in the power tool, electrical conductors (9) for connecting the module housing (11) with a power source (10), battery contacts (16) for electrically connecting the module housing with the power tool (1), an aspirator (13) having a drive motor (14) for producing vacuum and located in the module housing (11), with the aspirator (13) being connectable with a suction head (7) arrangeable in a region of a working tool.

Abstract: A suction module for an electrical hand-held power too land including a housing (11) at least partially receivable in the battery-receiving chamber (15) of the power tool (1) in the power tool, electrical conductors (9) for connecting the module housing (11) with a power source (10), battery contacts (16) for electrically connecting the module housing with the power tool (1), an aspirator (13) having a drive motor (14) for producing vacuum and located in the module housing (11), with the aspirator (13) being connectable with a suction head (7) arrangeable in a region of a working tool.

Abstract: A method for cleaning medical instruments including dental instruments having internal channels and internal moving parts comprises cleaning the external surface and internal channels and parts by a jet of cold water followed by a jet of preheated water, then intensely after-cleaning and disinfecting followed by lubricating the moving parts, then sterilizing and drying and cooling.

Abstract: A method and apparatus for cleaning medical instruments including dental instruments having internal channels and internal moving parts comprises cleaning the external surface and internal channels and parts by a jet of cold water followed by a jet of preheated water, then intensely after-cleaning and disinfecting followed by lubricating the moving parts, then sterilizing and drying and cooling.

Abstract: A cassette for the acceptance of medical instruments, and preferably dental instruments, to enable a hygienic treatment of the instruments when the cassette is placed into a chamber of an apparatus that is capable of being closed pressure-tight. The cassette contains at least one adapter for holding at least one instrument. The adapter will have line channels for the delivery of treatment agents to the interior of the instrument and the adapter can contain a control valve that will close the line channels given an adapter not occupied with an instrument.

Abstract: A method for cleaning medical instruments, particularly dental articles and dental instruments, with a cleaning fluid applied in a pulsating fashion comprises a step of gas being supplied to the cleaning fluid under high pressure in a pulsating fashion in pulse pauses of the fluid. The apparatus comprises a cassette into which the articles are placed and the cassette is inserted into a chamber of the apparatus which is closable pressure-tight. The cassette can contain adapters for holding the articles and the apparatus includes means for supplying both pulsating cleaning fluid as well as the pulses of gas or air.