Patents by Inventor David M. Knapke

David M. Knapke 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: 4559900
    Abstract: A device for applying a lubricant coating to strip material subsequently formed in an operation which necessitates uniform application of the lubricant. Propulsion rolls pull the strip through a lubricant bath and squeeze off excess lubricant to leave a relatively heavy and somewhat uneven coating of lubricant. The propulsion rolls drive the coated strip between metering rolls which have hardened metal surfaces roughened by grit blasting to achieve a uniform, pitted effect. The metering rolls exert substantial pressure on the thickly coated strip and cause separate and independent, limited volume patches of lubricant to be defined and adhere to the strip uniformly across its surfaces.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: December 24, 1985
    Assignee: F. J. Littell Machine Co.
    Inventors: David M. Knapke, Kenneth C. Johnson
  • Patent number: 3987750
    Abstract: A free standing strip oiler and feeder adapted to oil both sides of a metal strip and feed it to a press comprising coacting powered feed rolls which receive and feed a strip to a straightening roller followed by means for coating the upper surface of the strip with lubricant, a pair of coacting squeegee rolls for smoothing the lubricant on the upper surface of the strip, means for coating the underside of the strip with lubricant and a further roll for finally smoothing the oil on the upper surface of the strip. The oiler and feeder unit is provided with a system for returning excess oil to an oil reservoir which is heated to maintain the oil at the proper and desired flow standards.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: October 26, 1976
    Assignee: Perfecto, Inc.
    Inventor: David M. Knapke