Patents by Inventor Derrick B. Hoffland

Derrick B. Hoffland has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Vibratory electrostatic fluidized bed for powder paint coating
    Publication number: 20030044524
    Abstract: The device and method of the invention utilizes a vibratory trough or bed to triboelectrically charge powder paint particles. The trough is lined with polytetrafluorethylene or any other material having a dielectric constant sufficient to triboelectrically charge paint particles such that oscillation of the paint particles by a motor charges the particles. The motor has an unbalanced weight sufficient to cause a vibration on the trough. The fluidized and subsequently charged particles then attach to a grounded workpiece.
    Type: Application
    Filed: September 5, 2001
    Publication date: March 6, 2003
    Inventor: Derrick B. Hoffland