Abstract: A device for processing a workpiece includes at least one plunger pump, which is drivable by means an electric motor and which generates a highly pressurized volume flow, which volume flow can be interrupted in controlled fashion and emerges from at least one connected consumer. The volume flow is conveyed at substantially constant high pressure via a pressure line to the consumer. The electric motor is a reluctance motor, which is controllable by a connected frequency converter. A pressure sensor is connected to the pressure line, which pressure sensor is connected to a controller.

Abstract: The invention relates to a spray gun with a handle part (3) comprising a safety switch (6). A nozzle tube (1) is connected on one end of said handle and a feed line (2) is connected to the other end thereof. Said spray gun, which can be actuated in a contactless manner by means of an actuating element (5) and a switch surface (4), is characterised in that the switch surface (4) contains an emitting and receiving unit, whereby the active area thereof is disposed in the antenna field (8) of the switch surface (4) and is connected to an evaluating device (7) which is in permanent active communication with the actuating element (5), which contains an electronic circuit, and which authorises control of the feed supply of the media.

Abstract: The invention relates to a spray gun with a handle part (3) comprising a safety switch (6). A nozzle tube (1) is connected on one end of said handle and a feed line (2) is connected to the other end thereof. Said spray gun, which can be actuated in a contactless manner by means of an actuating element (5) and a switch surface (4), is characterised in that the switch surface (4) contains an emitting and receiving unit, whereby the active area thereof is disposed in the antenna field (8) of the switch surface (4) and is connected to an evaluating device (7) which is in permanent active communication with the actuating element (5), which contains an electronic circuit, and which authorises control of the feed supply of the media.