Itw Gema Ag

Gema Volstatic Ag

Gerald Haas

Hans Peter Michael

Felix Mauchle

Karl Buschor

A spray gun coating objects with a coating material. Its barrel ( ) and its grip ( ), at least their basic shapes, are one integral structure ( ).

Spray gun for coating objects

A spray powder-coating apparatus fitted with an electronic control system ( ) regulating the air flows ( ) to an injector ( ) as a function of setpoints (m) for the rates of powder to be moved, and as a function of a setpoint (GV) for the total rate of air passing through the nozzle, by means of motor-driven adjustable throttles ( ), preferably also as a function of the actual values ( ) of the regulated air flows ( ).

Powder spray coating device

A spray coating device for coating powder, comprising an electrode support ( ) fitted with an electrically insulating tubular segment ( ) running at least 1.5 cm from an electric contactor ( ) into a powder duct ( ).

Electrode holder for a powder spray gun

A manual spray-coating gun comprising at least one manual setting/operating element ( ) to manually change operational values and transmitting the desired operational values to a control unit ( ) situated outside the gun.

Manual spray coating gun

Powder-coating equipment comprises two throttles ( ) each mounted in one of a conveyance-air line ( ) and a supplemental-air line ( ). The throttles' flow impedance' are adjustable in a motorized manner by providing throttle with its own adjustment motor ( ). The adjustment motors, such as electric stepping motors and/or servo-motors are driven by an electronic control unit ( ).

Powder coating equipment having zero-sum control of conveyance and supplement air lines

A spray powder-coating system comprising at least one flow throttle ( ) in a compressed-air line of an injector ( ). An electronic control unit ( ) non-linearly controls the throttle as a function of setpoints.

Spray powder-coating system

Spray coating device

A powder-conveying injector to move coating powder and wherein the jet catching duct(,) of the conveying jet nozzle (,) is made of glass.

Conveying injector

An electrostatic spray coating apparatus having a spray nozzle which has a spray orifice for atomizing coating material. The nozzle orifice may be round or, preferably, is in the form of a slot to impart a flat shape to the atomized material. The spray nozzle is mounted to be rotated on a body of the spray gun so that the atomized material particles are driven radially outwards in addition to the forward direction and are thereby distributed uniformly in the cloud of sprayed material. A brake may be provided to slow down the rotation when greater penetration into cavities in the article being painted is desired. In invention may be used in either power spray coating apparatus or liquid spray coating apparatus.

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St. Gallen, Switzerland

Gerald Haas