Patents by Inventor Jack A. Wohlfeil

Jack A. Wohlfeil 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 detecting jam-ups of serially advancing blanks
    Patent number: 4159109
    Abstract: A method and apparatus for detecting jam-ups of serially advancing blanks of which the method comprises storing a number corresponding to the length of the blanks in predetermined increments, detecting a leading edge of such blanks, actuating a control means by the detection of the leading edges which generates a digit corresponding to the predetermined increments, detecting a trailing edge of such blanks to deactuate the control means, comparing the stored number with the digits generated by the control means, and stopping the blanks when the number of digits exceeds the stored number.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: June 26, 1979
    Assignee: The Ward Machinery Company
    Inventors: Raymond S. Watson, Jack A. Wohlfeil