Patents Assigned to El-Trol, Inc.
  • Roving frame stop apparatus
    Patent number: 4300342
    Abstract: An end detector for detecting an interruption in an individual textile strand being processed on a textile machine and the combination of such detector with others mounted on a roving frame.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: November 17, 1981
    Assignee: El-Trol, Inc.
    Inventor: James L. Highsmith, Jr.
  • Apparatus and method for displaying the measurement of a tire
    Patent number: 3941178
    Abstract: The measurement of a tire is displayed during rotation of the tire and buffing thereof by an apparatus and method in which a first train of electrical pulse signals are generated which characterize the rotational speed of the tire, a second train of electrical pulse signals are generated which characterize the linear surface speed of the crown surface of the tire which is being buffed, and the ratio of pulses in the two trains is displayed as indicative of a measurement of the tire.
    Type: Grant
    Filed: April 19, 1974
    Date of Patent: March 2, 1976
    Assignee: El-Trol, Inc.
    Inventors: John R. Simpson, Robert E. Lozier, Jr.