Patents by Inventor Louis W. Hinshaw

Louis W. Hinshaw 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).

  • Cooling and heating apparatuses
    Patent number: 4188994
    Abstract: A cooling apparatus, having an evaporative cooler interfaced with an insulated air chamber and detachable therefrom to be replaced with a solar heater collecting panel, said insulated air chamber being connected to a house or other structure by air passage means and said evaporative cooler operable by other than the conventional electrical energy sources as well as the usual electrical energy source, said assembly to be used for the cooling and heating of houses and other structures.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: February 19, 1980
    Inventor: Louis W. Hinshaw
  • Ring whirling device
    Patent number: 4018444
    Abstract: A skill toy for persons of all ages having a handle loosely supporting two spaced rings retained on hubs about which they are skillfully caused to rotate in opposite directions for amusement and exercise.
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: April 19, 1977
    Inventors: Otto F. Chew, Jr., Louis W. Hinshaw