Patents by Inventor David E. Fredericksen

David E. Fredericksen 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).

  • Method for powder coating plastic articles and articles made thereby
    Patent number: 6921558
    Abstract: A method for powder coating articles includes the steps of preheating the article to a preheating temperature, coating the article with a polymeric powder coating having a cross-linking temperature that is above the preheating temperature and curing the article having the powder coating applied thereto at a curing temperature. The curing temperature is between the powder coating cross-linking temperature and the melting point temperature of the articles. A system for carrying out the coating method is disclosed as is an article made by the method.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: July 26, 2005
    Assignee: Illinois Tool Works, Inc.
    Inventors: David E. Fredericksen, George M. Vollrath, Algis P. Suopys, Guy L. Rosenthal
  • Method for powder coating plastic articles and articles made thereby
    Publication number: 20030113476
    Abstract: A method for powder coating articles includes the steps of preheating the article to a preheating temperature, coating the article with a polymeric powder coating having a cross-linking temperature that is above the preheating temperature and curing the article having the powder coating applied thereto at a curing temperature. The curing temperature is between the powder coating cross-linking temperature and the melting point temperature of the articles. A system for carrying out the coating method is disclosed as is an article made by the method.
    Type: Application
    Filed: December 18, 2001
    Publication date: June 19, 2003
    Inventors: David E. Fredericksen, George M. Vollrath, Algis P. Suopys, Guy L. Rosenthal
  • Method and apparatus for electrostatic coating of articles
    Patent number: 5379880
    Abstract: A continuous, automated method and apparatus for transporting and electrostatically coating articles including providing a plurality of articles in an unoriented bulk state, each article having a first end portion, orienting each article and transporting them into a desired position, transferring each article in succession to a moving conveyor, suspending each article from the conveyor by its end portion and conveying the articles for electrostatic coating and curing.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: January 10, 1995
    Assignee: Illinois Tool Works Inc.
    Inventors: James W. Stone, Frederick A. Kish, John Wojcik, Donald L. Van Erden, David E. Fredericksen, Parimal M. Vadhar