Patents Assigned to Kenneth Ambler
  • Photoelectric safety screen with stray source detection
    Patent number: 4520262
    Abstract: This invention relates to safety apparatus intended for use in conjunction with industrial machinery especially of a type such as presses and guillotines. The invention employs a radiant energy safety screen with the ability to detect the presence of extraneous radiation or a failure of radiant energy sources or detectors.
    Type: Grant
    Filed: December 6, 1983
    Date of Patent: May 28, 1985
    Assignees: Kenneth Ambler, Willy Raeder
    Inventor: Anthony D. Denton