Patents by Inventor Mark C. Wirfs

Mark C. Wirfs 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 and apparatus for dipping metal fence posts
    Patent number: 4232066
    Abstract: A white cap dipper apparatus for metal fence posts and a method of dipping such posts, wherein the apparatus includes a shuttle car having a tilt frame for removing posts in successive groups from horizontal flow path cables, successively elevating such posts and dipping the same, and then returning the posts to the cables in horizontal position. The car reciprocates back and forth in the dipping zone in such timed relation to the flow path and with such speed that while it creates a gap in the flow path, it does not interrupt the continuity of the flow.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: November 4, 1980
    Assignee: Cascade Steel Rolling Mills, Inc.
    Inventors: Joel B. Stevens, Mark C. Wirfs