Patents by Inventor Fred J. Heinzmann

Fred J. Heinzmann 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).

  • Power cutting tool comprising a radar sensing system
    Patent number: 7421932
    Abstract: A power cutting tool having a movable blade, such as a table saw, comprising a radar sensing system for movement of an object in a region near the blade is disclosed. The radar sensing system emits a radio frequency wave and receives wave energy reflected by the object. The system measures the Doppler shift of the received wave energy to detect the presence of a fast moving object in a zone near the blade. When such a condition is detected, a reaction system can be activated to mitigate the condition.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: September 9, 2008
    Assignee: Power Tool Institute
    Inventors: Fred J. Heinzmann, David C. Shafer
  • Electromagnetic transmitting hockey puck
    Patent number: 5564698
    Abstract: A hockey puck with an electromagnetic transmitter. The electromagnetic transmitter could include an infrared transmitter, ultraviolet transmitter, radar repeater, RF transmitter or other device for transmitting electromagnetic waves outside of the visible spectrum. The electromagnetic transmitter is turned on using a shock sensor and is turned off using a timer.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: October 15, 1996
    Assignee: Fox Sports Productions, Inc.
    Inventors: Stanley K. Honey, Richard H. Cavallaro, David B. Hill, Fred J. Heinzmann, Alan C. Phillips, Harold Guthart, Alan A. Burns, Charles L. Rino, Philip C. Evans