Patents by Inventor Joseph K. Power

Joseph K. Power 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).

  • Personal alarm
    Patent number: 4719454
    Abstract: A portable personal alarm which has a small size and achieves high sound levels utilizes the overdriving of a miniature buzzer. In order to reduce the likelihood of damage to the buzzer and create a more terrifying and noticeable sound, the alarm tone is pulsed.
    Type: Grant
    Filed: October 30, 1985
    Date of Patent: January 12, 1988
    Assignee: Hopkins International
    Inventors: Harry C. Hopkins, Joseph K. Power
  • Ground effect flying platform
    Patent number: 4290500
    Abstract: A ground-effect vehicle having a base frame and a downwardly extending skirt, rides on an air cushion created by injecting air downwardly through the frame into the space beneath the vehicle. In order to prevent the down draft of the air injected under the vehicle from damaging fragile objects, such as young plants, a deflector is provided to divert the air flow parallel to the ground and to reduce its velocity, while still maintaining sufficient pressure in the air cushion to permit the vehicle to hover.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: September 22, 1981
    Inventors: Harry C. Hopkins, Bernhard H. Goethert, Joseph K. Power