A plastic housing shell has two spaced apart bosses in it and first and second shafts extend in parallelism from the bosses. A turbine rotor has a bore that fits loosely over the first shaft and has a concentric first pinion with the same oversized bore. A gear and an integral pinion are journaled on the second shaft. The gear meshes with the pinion on the turbine rotor and the pinion on the gear meshes with a gear on a base ring of a rotary brush. The gear on the brush ring has a bored cylindrical shaft extending axially from it which slips over the first shaft for the brush to rotate on it while the periphery of the cylindrical shaft fits into the bore of the pinion and rotor so the rotor is journaled on said cylindrical shaft. Springy latch prongs engage a cover through which the brush extends so said cover retains all of the brush assembly parts in assembled condition. No other fasteners are required. A conduit that supplies the water jet for driving the turbine serves as a handle for the brush.

A massaging device designed for hydrotherapy is provided with an hydromechanical drive capable of operating effectively in any position, even when the device is held in a vertical position or upside down. The device comprises a paddle wheel (6) energized by water flowing from the mains through a duct (3) converging towards a distributor (5) from which the water flows tangentially to the wheel (6). Beyond the distributor, the water stream is smoothly guided by a gradually diverging arcuate side wall (16) towards an exhaust channel (18) lined by a concave wall (20) for directing the exhaust jet towards the massaging balls (12) which are freely rotating on studs (13) fixed on the tip of a drive shaft (11). This drive shaft is driven by the turbine wheel through a reducing gear enclosed in a water-tight housing (25), separated from the water circuit. The smooth guiding of the water stream by arcuate walls 16 and 20 ensures that this stream retains sufficient kinetic energy for forming a strong exhaust jet appropriate for hydrotherapy, irrespective of the position of the massaging device.

A water operated rotatable scrubbing brush device which generates considerable scrubbing torque, without the use of gearing or diverting the majority of the water driving the device away from the brush and out of the device. The device has a two-way water flow valve that permits the operator to select between a rotatable scrubbing brush mode, wherein liquid cleaning solution will also be dispensed to the scrubbing brush, and a rinse mode, wherein clean rinse water, without cleaning solution, will be dispensed without driving the scrubbing brush, to rinse off the item being scrubbed.

A turbine driven rotating brush includes a turbine enclosed in a housing having an inlet for receiving water and an outlet for discharging water flow. A port in the housing directs water onto blades of the turbine. A reduction gear transmits the torque output of the turbine to a shaft on which the brush is mounted. The turbine may be located adjacent a backstop so that water exiting the housing through the outlet is incident on the backstop. The backstop breaks up the discharge of the flow of water outwardly away from the brush for achieving different spray patterns around the brush.

A sealing apparatus wherein the nozzle on the forward end portion of a sealing gun on a programmable industrial robot includes a nozzle holder and a nozzle body made of a flexible material. The forward inner end of the nozzle body can gradually diverge and a reinforcement pipe can be provided in the nozzle holder. The nozzle body can be in the form of a tubular brush made of nylon bristles, a solid tubular body of polyurethane foam or a solid tubular body of silicone rubber.