A rinsing device for personal hygiene, particularly a mouth-washing device, operates as a liquid pulse generator. This is provided with a pressure-water passage which can be connected to a source of pressure water and an outlet to which a spray nozzle can be connected, preferably via a flexible tube. A rotary valve is included which can be set in rotation and is mounted between the pressure-water passage and the outlet. The rotating valve is adapted to close the outlet intermittently to produce a pulsating jet of liquid. A turbine is adapted to drive the rotary valve and is provided with at least one tangentially oriented jet opening at its periphery and which is in communication with the pressure-water passage.

A pressurized water jet dental hygiene apparatus which connects to a conventional faucet, composed of a two-component coupling, a flexible tube, and a hand held nozzle connected with the flexible tubing. A first component of the two-component coupling is threaded onto a selected faucet. The second component of the two-component coupling is connected with the flexible tubing. In operation, the faucet operates normally when the second component of the two-component coupling is removed. When it is desired to operate the fluid jet dental hygiene apparatus, the second component of the coupling is connected with the first component. Now, when water is turned on, water will squirt out the nozzle with a velocity and volume dependent upon the water pressure delivered at the faucet and relative amount the faucet valve (or valves) is (are) opened. The user then holds the nozzle such as to provide jetable cleansing of his or her dental tissues.

The system comprises a tank containing water and potatoes entrained therein. A food pump transports the mixture through a relatively long accelerator conduit of tapering cross-section. Some of the water from the output of this conduit is bypassed in accordance with the setting of a valve. A second conduit also has a tapering cross-section to align the potatoes. A water-operated turbine carries a disc-like cutter which is arranged in close proximity to the output of the second conduit. The cutter cuts the potato into helical lengths. Slitter blades on the cutter further cut the potato into helical strips. The turbine has a rotor which, in turn, carries a flywheel portion, the two parts being integral. Bearings press-fit on the rotor are journalled onto upstream and downstream stators in the turbine. Lubricating water is delivered to the bearing surfaces between the rotor and the stators.

A device for cleaning teeth and gums is provided. The device has an improved adapter that is easily connected to and disconnected from a variety of different faucet nozzles. A plurality of tips may be used with the invention.

A toothbrush connectable to a pressurized source of water for expelling a stream of pulsating water from the brush head thereof is provided. The toothbrush, includes: a body having a conduit therein in fluid communication between a water inlet and a plurality of holes formed in the brush head of the body, a flexible hose having a first end connected to the water inlet and a second end connectable to a pressurized source of water and a pulsatile mechanism in operational connection with the conduit for transforming the flow of water therethrough the conduit into a pulsating stream of water expelled from the holes.