Patents by Inventor Harold H. Frederick

Harold H. Frederick 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).

  • System for recovering a hunting arrow
    Patent number: 4704612
    Abstract: A method and apparatus for tracking an arrow and/or game animal shot in the sport of archery hunting is disclosed. The arrow contains a radio-frequency transmitter in a circuit also containing a power supply, and an inertia-activation switch in the shaft thereof. The circuit is of a size and weight so as not to alter the flight characteristics of the arrow. Once shot, the inertia-activation switch momentarily closes, causing the transmitter to transmit a signal. The archer carries a radio-frequency receiver with a directional antenna and a magnitude indicator and earphone coupled thereto to allow tracking and retrieval of the arrow and game animal.
    Type: Grant
    Filed: September 4, 1986
    Date of Patent: November 3, 1987
    Inventors: Dan D. Boy, Harold H. Frederick
  • System for recovering a hunting arrow
    Patent number: RE33470
    Abstract: A method and apparatus for tracking an arrow and/or game animal shot in the sport of archery hunting is disclosed. The arrow contains a radio-frequency transmitter in a circuit also containing a power supply, and an inertia-activation switch in the shaft thereof. The circuit is of a size and weight so as not to alter the flight characteristics of the arrow. Once shot, the inertia-activation switch momentarily closes, causing the transmitter to transmit a signal. The archer carries a radio-frequency receiver with a directional antenna and a magnitude indicator and earphone coupled thereto to allow tracking and retrieval of the arrow and game animal.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: December 4, 1990
    Inventors: Dan D. Boy, Harold H. Frederick