Patents by Inventor J. A. Crumley

J. A. Crumley 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).

  • Means for decoding a switch array
    Patent number: 4429301
    Abstract: Crossbar switch array employs two linear conductors having resistors thereon, with horizontal and vertical crossbar conductors connected to linear conductors between the resistors. All resistors have identical value, so that when a switch is closed, voltage readings taken at one end of each of the linear conductors permit calculation of the number of resistors passing current in each linear conductor where a constant current source is provided. An analog signal is developed which is proportional to the row and column of the closed switch.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: January 31, 1984
    Assignee: AMP Incorporated
    Inventors: J. A. Crumley, John P. Weaver
  • Printed circuits
    Patent number: 4368281
    Abstract: Ink compositions especially suitable for printing electronic circuit patterns on a substrate such as a flexible polyester substrate; methods for developing electrolessly and electrolytically the circuit configurations as articles of manufacture; flexographic printing with the ink composition has been disclosed as the preferred method.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: January 11, 1983
    Assignee: AMP Incorporated
    Inventors: Charles R. Brummett, J. A. Crumley, Ray N. Shaak, Dewey R. Whitaker
  • Welding method and means using foil electrode
    Patent number: 3988563
    Abstract: A welding method and means is disclosed utilizing a conductive foil disposed between or adjacent members to be welded together with the foil serving as one electrode and one or both of the members serving as another electrode of the welding circuit and with the members being forced together or with the foil being forced against the members by a separate electrode.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: October 26, 1976
    Assignee: AMP Incorporated
    Inventors: Robert Charles Swengel, Sr., J. A. Crumley