Patents by Inventor Johan C. W. Lemmens

Johan C. W. Lemmens 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).

  • Electrical contact pin for printed circuit board
    Patent number: 4728164
    Abstract: An electrical contact pin for mounting in a printed circuit board. The pin has an H-shaped contact portion cross-section which is mounted in the hole by compliant press-fit action. The H-shaped cross-section comprises four compliant pins and a crossbar. The floor of the crossbar is V-shaped and the transition between the pins and floor is rounded. The height and thickness of the fins on each side of the V-shaped floor are substantially the same, thereby minimizing or eliminating rotation of the pin during insertion into the hole.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: March 1, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Johan C. W. Lemmens, Hendricus J. A. Van Ierland