Apparatus for use in applying electrostatically charged coating material

A flexible coating material conduit conducts a flow of electrostatically charged coating material to a spray gun. The flexible conduit includes a first or inner layer which is electrically insulating and chemically nonreactive with the electrostatically charged coating material. A second layer of sy...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	RONALD J. HARTLE
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING NOZZLES PERFORMING OPERATIONS PIPES SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A flexible coating material conduit conducts a flow of electrostatically charged coating material to a spray gun. The flexible conduit includes a first or inner layer which is electrically insulating and chemically nonreactive with the electrostatically charged coating material. A second layer of synthetic rubber is electrically insulating. The second layer has a Shore A hardness of 75 or less and a thickness which is at least 0.200 times an overall radial extent of the conduit. A third layer of synthetic rubber extends around the second layer and is electrically conductive. A fourth layer of polymeric material extends around the third layer and is abrasion resistant and electrically insulating. The third layer is connected with ground. The source of electrostatically charged coating material includes a voltage block which electrically isolates the electrostatically charged coating material from a source of coating material which is not electrostatically charged.