Patents Assigned to Erwin Sick Optik-Electronik
  • Light barrier system
    Patent number: 4012635
    Abstract: A light barrier system is provided which includes a light transmitter, a light receiver to receive the light beam transmitted over a predetermined path, an indicator unit which is connected to the light receiver and produces a signal when an obstacle is detected in the path, and a power unit supplying the light transmitter, light receiver and indicator unit. The power unit consists essentially only of a rectifier. A pulsed light source is employed, operated by the discharge of a capacitor in the rectifier output.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: March 15, 1977
    Assignee: Erwin Sick Optik-Electronik
    Inventors: Arthur Walter, Jurgen Erdmann
  • Reflector for photoelectronic equipment
    Patent number: 3945714
    Abstract: A reflector apparatus is disclosed for use in photoelectric applications. A housing is provided having an opening to accommodate a reflective element. A transparent plate is placed over the opening, with a sealing element interposed between the plate and the housing. Spring clips are provided to force the plate and housing together to effect a sealed reflector assembly.
    Type: Grant
    Filed: March 1, 1974
    Date of Patent: March 23, 1976
    Assignee: Erwin Sick Optik-Electronik
    Inventor: Arthur A. W. Walter