Patents by Inventor Walter R. Linke

Walter R. Linke 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).

  • Optical light pen
    Patent number: 4182956
    Abstract: The pen comprises an elongated housing having a light aperture at one end. A plurality of light-emitting diodes is mounted in the housing, and means are provided for focusing the light from such diodes at the light aperture. In use, the pen is held against a coded label and moved therealong. Light from the light-emitting diodes strikes the coded information, so as to produce a light pattern. Lenses in the housing focus the reflected light onto a detector which produces electrical signals in accordance with the light pattern.
    Type: Grant
    Filed: February 5, 1975
    Date of Patent: January 8, 1980
    Assignee: DeVar Inc.
    Inventors: James B. Funk, Jr., Walter R. Linke
  • Viewfinder optics with zero power doublet
    Patent number: 4086000
    Abstract: A chromatically neutral viewfinder optical system of positive forward and rearward elements and including therebetween a substantially zero power doublet which neutralizes chromatic errors generated by the positive elements.
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: April 25, 1978
    Assignee: Bell & Howell Company
    Inventors: Arthur Cox, Walter R. Linke
  • Reflex copier lens
    Patent number: 4062625
    Abstract: A lens system primarily for a copier is a plastic and glass lens design of reflex configuration enabling lower manufacturing cost with a higher degree of optical correction than a comparable all glass straight through design of similar optical characteristics. In the preferred embodiment, the plastic element is formed with aspheric surfaces.
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: December 13, 1977
    Assignee: Bell & Howell Company
    Inventors: Andor A. Fleischman, Walter R. Linke
  • Copier lens of reflex design
    Patent number: 4060312
    Abstract: A lens system primarily for a copier is a reflex, plastic and glass lens design enabling lower manufacturing costs with a higher degree of optical correction than a comparable all glass straight through design of similar optical characteristics. In the preferred embodiment, selected of the plastic elements is formed with aspheric surfaces.
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: November 29, 1977
    Assignee: Bell & Howell Company
    Inventors: Walter R. Linke, Andor A. Fleischman