Patents by Inventor David M. Haskamp

David M. Haskamp 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).

  • Oil filter gripping tool
    Patent number: 4750388
    Abstract: An oil filter gripping tool including a looped band, the ends of which are connected to scissors levers through a pair of double pivot hinges. The hinges allow movement of the levers to tighten the band to contract to closely fit and grip the oil filter. With the band tightened about the oil filter, turning the levers causes rotation of the oil filter. The hinges also allow the levers to be laterally moved to avoid engine and vehicle parts.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: June 14, 1988
    Assignee: Bridge Wheel Co., Inc.
    Inventors: Wendall K. Hagen, David M. Haskamp
  • Oil filter gripping tool
    Patent number: D296182
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: June 14, 1988
    Assignee: Bridge Wheel Co., Inc.
    Inventors: Wendall K. Hagen, David M. Haskamp
  • Folded wheel block
    Patent number: D297003
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: August 2, 1988
    Assignee: Bridge Wheel Co., Inc.
    Inventors: David M. Haskamp, Merrel M. De Raad