Patents by Inventor Henry A. Pernicka

Henry A. Pernicka 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).

  • Interlocking welded construction for roll over protective structures
    Patent number: 3964782
    Abstract: A roll over protective structure for use on tractors to protect the vehicle operator in the case of an upset. Interlocking mating of structural frame members is accomplished by using metal tubing having cross sectional shapes of complementary dimensions such that structural members can be inserted into other members of the structure having compatible internal dimensions and shapes.
    Type: Grant
    Filed: February 5, 1975
    Date of Patent: June 22, 1976
    Assignee: International Harvester Company
    Inventors: Henry A. Pernicka, R. Dale Moore