Patents by Inventor Delon C. Hanson

Delon C. Hanson 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).

  • Precision optical fiber switch
    Patent number: 4033669
    Abstract: In a half-duplex or multi-channel optical transmission line, parallel rods, which retain and concentrically align movable and stationary fibers, form a precise switch detent for reproducibly switching a movable fiber from one to another of a plurality of stationary fibers.
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: July 5, 1977
    Assignee: Hewlett-Packard Company
    Inventor: Delon C. Hanson
  • Apparatus and method for transmitting binary-coded information
    Patent number: 4027152
    Abstract: An apparatus is disclosed for transmitting binary-coded information over a fiber-optic link which provides a link monitor to indicate whether the fiber-optic link is intact and operating. The binary-coded information is translated into a pulse-coded signal which provides a positive pulse for a positive-going transition in the binary signal and a negative pulse for a negative-going transition in the binary signal. In addition, a refresh pulse of the same polarity as the preceding pulse is provided whenever there has been no pulse for a predetermined amount of time.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: May 31, 1977
    Assignee: Hewlett-Packard Company
    Inventors: William W. Brown, Delon C. Hanson, Thomas Hornak