Patents by Inventor Gordon K. Zern

Gordon K. Zern 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).

  • Danger alarm device
    Patent number: 4170955
    Abstract: This invention has to do with an alarm used by persons engaged in high-risk activities. A can of propellant gas is used in combination with a means to generate a noise signal at approximately 120 decibels. A rotatable shaft is used to connect the pressurized container and the noise generating means during operation of the device. A flutter valve can be used in the noise generating means to produce an intermittent signal.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: October 16, 1979
    Inventor: Gordon K. Zern