Alfred Karcher Gmbh & Co.

Eberhard Veit

Roland Schick

Josef Schneider

Helmut Gassert

Johann G Wesch

Gerhard Dellert

Uwe Urban

Rudolf Guhs

Gabriele Bonezzi

Helmut Korner

Peter Klein

In order to enable the production of the motor shaft to be simplified in the case of a high-pressure cleaning device comprising a piston pump, the pistons of which are driven by a motor via a wobble plate non-rotatably connected to the motor shaft of the motor, it is suggested that the wobble plate be non-rotatably connected by means of form locking to a coupling element consisting of plastic, this coupling element being attached at its end face to the motor shaft circular in cross section and being tensioned against the end face of the motor shaft by a tension rod held in the motor shaft, thereby forming a friction contact.

High-pressure cleaning device

In order that a road-sweeping machine with a chassis, with unsteered rear wheels and steered front wheels, with an engine which is disposed substantially above the rear wheels and drives them, with a seat near the engine and with a sweeping roller disposed on the underside of the chassis between the front and rear wheels at right angles to the direction of travel, and with a dirt collector, may be constructed in such a way that it has a compact construction of simple design and has a good sweeping effect whilst producing little dust, it is proposed that the dirt collector is disposed between the front and rear wheels adjacent to the sweeping roller and is connected by way of a suction line to a suction unit, and that the engine is disposed with the output shaft directed substantially vertically, the output shaft projecting upwards and downwards out of the engine, wherein the upwardly projecting portion thereof drives the suction unit and the downwardly projecting portion drives the rear wheels and the sweeping roller.

Road sweeping machine

In a high-pressure cleaning apparatus comprising an electric motor arranged in a housing, a high-pressure pump arranged in a housing with at least one piston entering a pump chamber in a sealed manner, and a swash plate carried by a motor shaft protruding from the housing of the electric motor, with the piston or pistons of the high-pressure pump resting in a resilient manner against the swash plate, in order to achieve electrical insulation in the region of the swash plate drive, it is proposed that the transition from the motor shaft via the swash plate to the piston or pistons be electrically interrupted by an electrically insulating material being interposed therebetween.

High-pressure cleaning apparatus

In a connector provided with a coupling ring for the pipe coupling of a high-pressure cleaning apparatus, the pipe coupling comprising a coupling sleeve with a conical sealing surface, a circular-cylindrical sealing surface adjacent thereto, and an outer thread for the coupling ring of the connector, with a cylindrical nipple carrying a ring seal and sealingly positionable at the circular-cylindrical sealing surface of the coupling sleeve, and a convex sealing shoulder for sealing abutment on the conical sealing surface of the coupling sleeve, the coupling ring being mounted on the connector so as to be freely rotatable and essentially immovable in the axial direction, in order to improve the mechanical protection of the coupling parts against damage, it is proposed that the coupling ring protrude in the axial direction over the free end of the nipple, and that the ratio of the length of the nipple to the outer diameter thereof be between 0.4 and 0.3.

Connector for the pipe coupling of a high-pressure cleaning apparatus

High-pressure cleaning device with extendable handle

Growing community of inventors

Goppingen, Germany

Eberhard Veit