Itw Gema Ag

Hanspeter Michael

A high-voltage powder spray gun includes a rear terminal segment ( ) of a powder tube ( ) and the front terminal segment ( ) of a hookup tube ( ) which are inserted far enough in axial and sealing manner to subtend, between their overlap ends ( ), a powder-tight, electrically insulating expanse ( ) to preclude electrical leakage currents. An electrically conducting bush ( ) runs over the outer overlap end ( ) of the hookup-tube/powder-tube connection to shunt any electric charges that might issue at the outer overlap end ( ) between the hookup tube ( ) and the powder tube ( ). An electrically grounded shielding sheath ( ), such as a helical compression spring, is configured radially away above the outer overlap end ( ) between the rear terminal segment of the hookup tube ( ) and the front end of powder hose ( ) slipped over the rear terminal segment. This configuration prevents arcing on the hand of an operator in the event electric charges were to issue between the powder hose ( ) and the hookup tube ( ).

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St. Gallen, Switzerland

Hanspeter Michael