Patents by Inventor Roger F. Zollinger

Roger F. Zollinger 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).

  • Method and apparatus for capacitance testing printed circuit boards
    Patent number: 4229693
    Abstract: This relates to a method and apparatus for testing printed circuit boards. The printed circuit board to be tested is placed on a metal plate and covered with a thin plastic film. The plastic film is coupled to the metal plate to form a substantially air-tight chamber occupied by the printed circuit board. A vacuum is then created in the chamber to secure the printed circuit board. A capacitance meter has a first terminal coupled to the metal plate and a second terminal coupled to a probe which is used to puncture the plastic film to make contact with electrical interconnects on the board.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: October 21, 1980
    Assignee: Honeywell Information Systems Inc.
    Inventors: Dan F. Irick, Roger F. Zollinger