Patents by Inventor Stanley J. Jacek

Stanley J. Jacek 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).

  • Volumetric metering device
    Patent number: 4867353
    Abstract: A volumetric metering device comprising a housing, a butterfly gate control unit and an adjuster to adjust the volume of a metering chamber whose operation is controlled by the butterfly gate control unit between a first condition to load the metering chamber with particulate material and a second condition to discharge the particulate material from the housing.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: September 19, 1989
    Inventor: Stanley J. Jacek