A water massage device with entrained air is held against the region to be massaged. Mechanical displacement of the device coupled with pulsations in the water-air flow create a gentle massage. Air is entrained by passing a high velocity water jet across an air gap and through a receiving tube into a rotor chamber. Differential pressures developed in the housing establishes an air draw through the receiving tube into the housing. An eccentrically weighted rotor revolves under the impact of the j...

With a plasma being generated between a cathode electrode to which a high-frequency power is applied and an electrically conductive substrate opposed to the electrode in a reaction vessel the pressure of which can be reduced, a photoconductive layer having the matrix of silicon atoms is deposited on a substrate to be processed, a surface layer comprised of non-monocrystal carbon containing hydrogen is provided on the photoconductive layer, a surface of the surface layer is etched to fluorinate t...

An electrophotographic photosensitive member is disclosed having a first area layer and a second area layer on a substrate. The first area layer and the second area layer are formed by deposition using different methods, and an intermediate layer is provided therebetween. The intermediate layer is changed continuously in composition in such a manner that the composition at the surface in contact with the first area layer is approximately the same as the composition of the first area layer and th...

An attachment for a faucet whereby water will be caused to pulsate as it is discharged or dispensed through an interdental point so that the pulsating water under pressure can be conveniently directed on to a person's teeth, gums, and the like.

In an apparatus for the hydrotherapeutic treatment of breasts, the spray unit which rotates in the bottom of the conventional hollow bell-shaped body is made of two frustro-conical members, preferably of molded plastics, which are applied against each other, one at least of their facing sides being formed with grooves which realize in the assembly radial canals and tangential nozzles adapted to propel the unit by reaction effect, while the inner frustro-conical member has radial lines of perfora...

A method and apparatus for hygienic care of the oral cavity for regular use in the home, in which an ultrasonic applicator is used for cleaning of teeth as by the removal of tartar, placque, calculus deposits, stubborn stains, such as are produced by smoking, and simultaneous stimulation of the gingiva or gums. The ultrasonic applicator or stimulator has a polishing effect when used with a liquid medium and in engagement with the tooth and gingival structures of the oral cavity for the removal o...

An apparatus for cleaning the mouth includes chuck unit fastened to the outlet pipe of a water tap and locked in place by a locknut, a spray gun connected to the chuck unit by a spiral water tube, wherein the spray gun has a control valve controlled to eject a stream of water for cleaning the cavity of the mouth. A toothbrush may be attached to the handle of the spray gun in place of the nozzle thereof for cleaning the teeth. The toothbrush has water outlets on the brush head thereof through whi...

This invention relates to a system for locating the focal range for extracorporeal shockwave lithotrity. Motion in the patient's body induced by the shockwaves are detected by a comparison of several ultrasonic B-scan-images taken with a time delay. The detected processes of motion are displayed on a video screen by means of color coding.

In order to produce an inlay-type pattern on a flat-bed knitting machine, a plurality of thread guides carrying differently colored threads are mounted on respective slides which are movably supported, in pairs, on horizontal guide bars above a needle bed. Each slide coacts with a pair of adjustable stops limiting its reciprocation along the guide bar, another slide taking over the thread feed at the point where a previously active slide is arrested. In order to prevent the thread of the first s...

A return pipe for recycling liquid from a handpiece of a pulsed-liquid hygiene apparatus to a hydraulic motor is connected to the top of a relief flue above the working chamber of the motor by a coupling element which imparts a helicoidal movement to the returned liquid thus slowing its fall in the flue.