Apparatus for use in applying electrostatically charged coating

Details Apparatus for use in applying electrostatically charged coating Apparatus for use in applying electrostatically charged coating

1997-04-15

1999-01-12

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Electrostatic type

With fluid entrainment

B05B 503

Patent

active

058576290

ABSTRACT:
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.

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Service Bulletin SB-2-220-A, entitled OMX, by ITW DeVil-biss, pp. 1,8,9,10,11,18,19 and 24.

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