Coating processes – Direct application of electrical – magnetic – wave – or... – Electrostatic charge – field – or force utilized
Patent
1991-05-02
1993-03-02
Lawrence, Evan
Coating processes
Direct application of electrical, magnetic, wave, or...
Electrostatic charge, field, or force utilized
B05D 106
Patent
active
051907909
ABSTRACT:
A method and apparatus is provided for removing electrostatically bonded powder coating material from a non-recessed region of a surface of a workpiece without removing powder coating material from a recessed region of the surface of the workpiece. The present invention employs a powder coating removal apparatus for removing the powder coating material from the non-recessed region. The powder coating removal apparatus comprises a rotatable drum including a hollow cylindrical portion having a plurality of openings therein. A plurality of elastic bands are connected to opposite end portions of the drum and serve to frictionally engage and agitate the powder coating material on the non-recessed region of the surface, thereby overcoming the electrostatic bond between the non-recessed region and the powder coating material thereon. A vacuum hose is placed adjacent to one, open end portion of the drum and serves to create a vacuum in the hollow cylindrical portion of the drum to remove the agitate powder coating material from the non-recessed region of the surface of the workpiece.
REFERENCES:
patent: 3356061 (1967-12-01), Wiggins
patent: 3889015 (1975-06-01), English
patent: 4942641 (1990-07-01), Gerke, Jr. et al.
Lawrence Evan
Metokote Corporation
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