Patents by Inventor Volker VON Ey

Volker VON Ey 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).

  • Piston for internal combustion engines
    Patent number: 4075934
    Abstract: A piston for internal combustion engines, preferably made from aluminum alloy, has machined, oil-dragging grooves formed on the periphery of the piston skirt and concave transitions with a sawtoothlike profile with an obtuse profile angle. The piston skirt is provided with an electrodeposited hard iron layer having a thickness of 1-30 .mu.m and contains 0.5-6% metal-oxy compounds incorporated therein.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: February 28, 1978
    Assignee: Karl Schmidt GmbH
    Inventors: Erich Wacker, Heinz Hofmann, Karl Kopp, Hermann Bauer, Volker VON Ey, Franz Weiss