Patents by Inventor Keith Betzen

Keith Betzen 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).

  • Patent number: 5894818
    Abstract: In order to protect yards, gardens and other areas from the destruction caused by deer and other animal pests, a portable, wireless animal repelling and training device is provided, consisting of a field unit and a charging unit. The field unit has a capacitor to provide a voltage across bare electrodes on the top of the device. The device is baited between the electrodes so that an animal pest smelling or licking at the device will close the circuit between the electrodes and receive an electric shock. The field unit capacitor is charged using a portable, battery-powered charging unit, or alternatively the device may have the charging circuitry and battery contained within the field unit. The devices are positioned around the plants or articles to be protected.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: April 20, 1999
    Inventor: Keith Betzen