Patents by Inventor Otto Kelm

Otto Kelm 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).

  • Self-aligning plunger tip
    Patent number: 4842039
    Abstract: A plunger tip for use in the die casting process has an interior ball and socket arrangement wherein the plunger head is pivotable in relation to the plunger rod for correcting slight misalignments between the plunger head and the shot sleeve. A longitudinal through bore and a series of radial transverse bores are included to provide a continuous path for coolant fluid.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: June 27, 1989
    Inventor: Otto Kelm