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Electrostatic powder-coating gun

  • US 5,482,214 A
  • Filed: 12/17/1992
  • Issued: 01/09/1996
  • Est. Priority Date: 12/17/1991
  • Status: Expired due to Fees
First Claim
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1. An electrostatic powder-coating gun having a gun barrel, comprising:

  • a powder duct which is connectable to a supply conduit for a powder-air-mixture and is arranged along the longitudinal axis of the gun barrel towards the work to be coated and terminating in a mouth;

    a high-voltage generator which is connectable to a power supply line;

    an electrode supporting tube extending through the powder duct in axial direction thereof; and

    a high-voltage electrode which is carried by the supporting tube and which protrudes beyond the mouth of the powder duct towards the work and is connected to the high-voltage generator via a conductor passing through the supporting tube, wherein the high-voltage generator and the powder duct are disposed in series along the longitudinal axis of the gun barrel, andwherein the powder duct comprises a toroidal powder duct coaxial with the electrode supporting tube and an annular channel extending to said mouth, and a supply port for the powder-air-mixture, extending into the toroidal powder duct tangentially, at an inclination to the longitudinal axis.

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