Patents by Inventor Thomas J. Abrahamsen

Thomas J. Abrahamsen 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).

  • Patent number: 4355488
    Abstract: A cryogenic deflashing apparatus is provided specifically adapted to remove residual flash from relatively large molded articles in a continuous high production deflashing operation. The apparatus incorporates a modular deflashing housing wherein entry, pre-freezing, blasting, and exit of multiple articles is accomplished simultaneously in discrete serially aligned operational compartments. A novel article conveyor transport mechanism is additionally provided which permits the transport speed of the articles through the various compartments to be independently varied during operation to maximize production efficiency.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: October 26, 1982
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Robert E. Schmitz, David T. Stearns, Erwin Stegmann, Thomas E. McWhorter, Warren F. Geiger, Thomas J. Abrahamsen