Patents by Inventor Borje E. Karlsson

Borje E. Karlsson 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).

  • Apparatus for lubricating saw chains in guide bars
    Patent number: 4016956
    Abstract: An apparatus for lubricating a chain saw mounted on the guide rail of a guide bar comprises a lubrication system for feeding a lubricant through a conduit in the guide bar to the saw chain while the guide bar is in the operating down position and the lubricant flow is interrupted when the guide bar is moved into the non-operating up position of the saw chain. The lubrication system provides a saving of lubricant by feeding it to the chain only during the working process and only to its essential working parts.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: April 12, 1977
    Inventor: Borje E. Karlsson