Patents by Inventor Thomas B. Kniff, deceased

Thomas B. Kniff, deceased 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).

  • Pick-type mining bit with support block having rotatable seat
    Patent number: RE29900
    Abstract: A pick type mining bit with a cylindrical shank has a support block with a bore and a hard insert detachably and rotatably mounted in the bore. The insert has a bore for rotatably receiving the shank of the bit.The bit has a cylindrical working end projecting from the support block which tapers in at the tip and has a hard insert mounted in the tip. .Iadd .
    Type: Grant
    Filed: June 16, 1977
    Date of Patent: February 6, 1979
    Assignee: Kennametal Inc.
    Inventor: Thomas B. Kniff, deceased