Patents by Inventor Grant H. Sanstrom

Grant H. Sanstrom 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: 4497280
    Abstract: A vertically elongated housing is provided including a lower end upwardly and outwardly opening receptacle portion, an upper end fluent material storage hopper and an intermediate heighth discharge chute opening downwardly from the lower end of the storage hopper toward the receptacle portion. The discharge chute includes inversely openable and closable flow controlling gates spaced therealong whereby a given quantity of fluent granular material may be trapped between the gates and intermittently dispensed from the discharge chute into the receptacle portion responsive to timed actuation of a flow controlling gate operating mechanism.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: February 5, 1985
    Inventors: Grant H. Sanstrom, Beverly J. Sanstrom
  • Patent number: 4365361
    Abstract: Air passage defining structure is provided including an inlet end communicated with the open upper end of the interior of a toilet bowl and an outlet end opening into a drain outlet for the toilet bowl downstream from the conventional water seal area of the toilet bowl. The drain outlet includes a venturi area into which the outlet end of the air passage defining structure opens and the normal flushing of the toilet bowl thereby causes air and odors from within the upper portion of the toilet bowl to be educted therefrom by venturi action. Also, the air passage defining structure includes an air pump serially connected therein intermediate its opposite ends and one way air valve structure also serially connected therein downstream from the air pump structure.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: December 28, 1982
    Inventor: Grant H. Sanstrom