Abstract: A rotary nozzle for a high pressure cleaning apparatus has a liquid driven rotor inclined to the axis of the rotor housing in which it is received and an O-ring engaging an annular region of the housing to drive the rotor so that it orbits the axis of the housing since either the drive ring or the annular region engaged thereby of the housing for elastically deformable, the speed of the rotor is reduced by deformation work.

Abstract: A pressure-washer nozzle has an inner sleeve generally centered on and extending along an axis and having a rear end formed as a high-pressure liquid inlet, an outer sleeve coaxial with and rotatable but axially nondisplaceable on the inner sleeve, and a rear nozzle body in the inner sleeve formed with a small-diameter axially throughgoing central rear passage opening at a front face of the rear nozzle body. The rear nozzle body further forms with the outer sleeve an array of outer rear passages. A front nozzle body in the inner sleeve forward of the rear nozzle body has a large-diameter axially throughgoing front passage coaxial with the rear passage.

Abstract: A rotor nozzle assembly has its nozzle rigidly fixed in the rotor body which is journaled at one side in a two-part housing which can be opened for replacement of the rotor body and nozzle as a unit.

Abstract: A rotatable nozzle comprising a housing having arranged therein a rotor rotatable about a longitudinal axis which is inclined in respect of a central axis of the housing. The rotor is peripherally provided with a blade wheel the blades of which being positioned in the flow path of an inlet beam of pressurized liquid for rotating the rotor and orbiting it around the central axis.

Abstract: This invention relates to a potentiometer with a digital display indicating the position of the potentiometer slider. In a known potentiometer of this type, a mechanical multidigit counter is mounted outside the potentiometer housing on the shaft carrying the slider. However, since the counter is mounted on the potentiometer shaft proper, the potentiometer must be inconveniently mounted in an apparatus at a point at which the counter can be read. Another disadvantage of the known potentiometer results from the fact that restrictions exist for the scale of the counter. The present invention provides a potentiometer of the above-specified type which is of simple design and is more versatile than known potentiometers. The advantage of the potentiometer according to this invention is that the display means can be mounted at a point remote from the potentiometer.