Patents by Inventor Raymond G. Bartkowiak

Raymond G. Bartkowiak 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: 5069331
    Abstract: The invention is directed to improved and lighter weight links for chains of a harvesting conveyor. The conveyor chain links are constructed of a stronger lighter weight material or constructed with conventional material but of a smaller diameter with a lubricous clip or bushing positioned on the surfaces where the links join to make up the chain. Using aero space composite materials and technology the chains will have an extended life.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: December 3, 1991
    Inventor: Raymond G. Bartkowiak