Patents Assigned to Hyde Park Electronics, Inc.
  • Apparatus and method for counting a series of progressively moving articles
    Patent number: 6167106
    Abstract: A system for counting a series of progressively moving articles using one or more sidewardly positioned and angularly oriented ultrasonic transducers which bathe the articles with ultrasonic waves and receive echoes reflected backwardly therefrom. Distances to the articles are determined by measuring round-trip sonic travel times. Count adjustment signals are generated when articles pass through the fields of view of the transducers and are replaced by other articles at measurably different distances.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: December 26, 2000
    Assignee: Hyde Park Electronics, Inc.
    Inventors: Gary Lee Hemmelgarn, David William Harris, James Thomas Zalusky
  • Method and apparatus for ply discontinuity detection
    Patent number: 5737238
    Abstract: A ply break detector for a laminate web uses a short time constant low pass filter and a long time constant low pass filter for filtering output signals from a sonic web scanner. A difference circuit compares output signals from the two filters to create a difference signal. A ply discontinuity indication is generated when the difference signal exceeds a predetermined threshhold with a predetermined persistence. Analog and digital versions are disclosed.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: April 7, 1998
    Assignee: Hyde Park Electronics, Inc.
    Inventors: Dean C. Mouradian, Jim A. Michaud, James T. Zalusky