Abstract: A vertically directed dryer unit (10) for compressed air, comprising a dryer cartridge (22) which, together with a housing (16, 18, 20), defines an inlet head area (92) and an outlet head area (72). A plurality of hollow membrane fibers (30) extend inside the cartridge between the two head areas, the wall material thereof being more permeable with respect to water vapor than air. An outlet valve (90) is provided between the outlet head area (72) and an outlet (74) of the drier unit. Said valve only opens when the pressure in the outlet head area (72) produces sufficient pressure for the provision of purging air. The purging air is fed to the outer surface of the membrane fibers (30) via a throttle element (70).

Abstract: The invention relates to a device for reading out at least one especially flexible imaging plate. The readout device comprises a reader for reading out information stored on the imaging plate, and a transport device having at least one drive means for transporting the imaging plate relative to the reader along a guide means on the transport path. The shape of the transport path is adapted to the shape of a readout area of the reader. At least one substantially solid support for the imaging plate is provided. The shape and dimension of the support are adapted to the shape of the transport path. When the imaging plate is transported together with the support, the imaging plate does not come into contact with the drive means. The invention also relates to the support for the imaging plate.

Abstract: A combined device (10) for reading out and erasing imaging plates (30) comprises an eraser (14) disposed down-stream of a readout unit (12) at a short distance thereof, said eraser being separated from the readout unit (12) by a light barrier (46).

Abstract: The invention relates to a readout device for exposed imaging plates. The inventive device is characterized in that the exposed plates are transported while lying in cassettes. A drive device moves the cassettes across a read gap at a constant speed and is configured as a wheel and disk drive acting upon the cassette rear.

Abstract: In the case of a compressed air compressor, intake openings located in the cylinder covers are connected to intake pipes made from elastomeric material, the length of which pipes amounts to a multiple of the clear cross-section. The intake pipes have a semicircular pipe portion at the cylinder end and a straight free pipe portion, which extends over the outer surface of the associated cylinder at a slight distance therefrom.

Abstract: A storage container (1) for a suspension used for medical purposes, in particular for ultrasonically assisted treatment of periodontitis, dental cleaning or dental preparation, comprises a flexible pouch (2), the interior of which is accessible via a charging and discharging nozzle (5). Situated in the interior of the pouch (2) is a distance element (6), in which a groove system (8, 9, 10) is incorporated. The groove system communicates with the interior of the charging and discharging nozzle (5). When the pouch (2) of said storage container (1) is pressed flat during removal of the suspension it contains, the opposing sides (3, 4) of the pouch (3) are applied during the final phase of emptying against the distance element (6). The groove system (8, 9, 10) contained in the latter however remains clear and forms a path, via which even the last residues of the suspension may be reliably removed from the pouch (2).

Abstract: Disclosed is a dental therapeutic device used for infiltrating and/or rinsing tissue or hollow spaces bordered by tissue, particularly tooth tissue or hollow spaces bordered by tooth tissue, with a therapeutic fluid. The inventive device comprises a storage container (2) for the therapeutic fluid, a hollow needle (42) for feeding the therapeutic fluid into the tissue, a pump (15, 43, 47) feeding the therapeutic fluid from the storage container (2) to the hollow needle (42), and a pump (15, 43, 47) sucking therapeutic fluid from the tissue via the hollow needle (42). All of said components are comprised in a hand-piece-type unit, whereby a very compact dental therapeutic device is created which is easy to handle for the dentist and requires no external units or only units that are generally part of a dentist's practice.

Abstract: According to the invention, the lens system of a dental or endoscopic camera is designed in the form of a non-telecentric lens in which the field stop or an image thereof is located in the region of the lens arrangement on the converter side of said lens system.

Abstract: A device for reading flexible storage foils. The devices includes a foil support, a reading light source which provides a reading light beam which has a wave length suitable to excite metastable storage centers of the storage foil. Drive mechanisms are employed to provide relative movement between the reading light beam and the storage foil. A light detector is responsive to fluorescence light of the storage foil generated by the reading light beam.

Abstract: Storage film (10) serving to produce latent X-ray images in lieu of conventional X-ray film, containing storage particles (20) which are held together by a binding agent (22) and in which metastable electronic excited states can be produced. The refractive index of the binding agent (22) and the storage particles (20) are selected in such a way that they are equally high so that the storage layer (12) formed by the storage particles (20) and the binding agent (22) behave like an optically homogenous body.

Abstract: A device for reading flexible storage foils. The devices includes a foil support, a reading light source which provides a reading light beam which has a wave length suitable to excite metastable storage centers of the storage foil. Drive mechanisms are employed to provide relative movement between the reading light beam and the storage foil. A light detector is responsive to fluorescence light of the storage foil generated by the reading light beam.

Abstract: A device for generating high-frequency mechanical vibrations for dental purposes comprises a current detector (50) fitted in the supply line of a vibration generator (12). The output signal of the current detector (50) is transmitted to one of the inputs of a control circuit (74), which at its other input receives a supply current nominal value signal. The output of the control circuit (74) is connected to the control terminal of a controllable oscillator (42), which together with a power stage (46 to 48) prepares the supply current for the vibration generator (12). In this manner, a constant output amplitude of the vibration generator is obtained independent of the load coupled to said vibration generator at any given time.

Abstract: A dental instrument for sonic or ultrasonic treatment comprises a shank (1) to which a treatment section (2) is joined. The shank (1) and treatment section.(2) are made of matrix-bonded carbon fibers. The instrument can be machined out of a woven carbon fiber fabric or can be a compression molding or an injection molding. The mechanical properties of the instrument can be adjusted by varying the length of the carbon fibers.

Abstract: A bottle for delivering predetermined volumes of liquid has two different standing surfaces (12, 14) and an immersion tube (48) whose inlet opening lies near one of said two standing surfaces. By standing the container on a first and then a second of said two standing surfaces, two predetermined volumes of liquid can be delivered without visual checking.

Abstract: To improve the efficiency of a side channel suction machine, it is proposed to provide in the inlet regions of the side channels a smooth deflecting wall, which extends from the base of the side channel to the end face of the housing part in which the side channel is formed. The deflecting wall is inclined with respect to a radius line passing through its centre, preferably through about 40.degree..

Abstract: A liquid-separating unit for dental purposes has, flange-mounted on a suction machine, a liquid-separating cyclone comprising a housing which surrounds a cyclone chamber (22) and into which a motor shaft (26) of the suction machine is passed. The latter carries at the end a pump impeller (42) for discharging liquid separated in the cyclone, and also a rotationally symmetrical air discharge part (28) the peripheral wall of which tapers at least in a portion (36) in the direction from the pump impeller (42) towards an outlet pipe (96) for cleaned air.

Abstract: An annular sonotrode 5 vibrates at one of its natural frequencies, preferably about four nodes 33-36 equally distributed over its circumference. The vibrations introduced at the input 17 along axis 10 are outputted to a tool 6 along an axis 19 bent by 90.degree.. With this design even difficult to access workpieces can be efficiently machined with ultrasonics.

Abstract: A two-stage side-channel compressor has in the central portion of its rotor (24) vanes (64) forming a radial compressor stage which allow a first side-channel (44) placed radially outward to be connected to an intake (18) on the central axis of the casing without any increase in the dimensions of the casing and without any loss of pressure.

Abstract: A supply unit for providing compressed air and reduced pressure for dental surgery comprising several superimposed supply components including at least a compressor unit and a suction unit each unit containing a base plate and a cover plate and vertical posts that connect these plates as well as wall panels.

Abstract: A vacuum instrument for dental hygiene and dental treatment which is intended to permit parodontological treatment of the tooth pockets. The instrument has an elastic suction cap which can produce a sealed vacuum over the gum pockets and interdental crevices. A treatment liquid is supplied to the suction cap and removed by the suction. Intermittent application of the vacuum produces a pumping action, which through likewise intermittent rinsing results in optimal cleaning of the interdental crevices as far as the base of the pocket.