Patents by Inventor James H. Leonard, Jr.

James H. Leonard, Jr. 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).

  • Method of discharging particulate material from a hopper
    Patent number: 4109827
    Abstract: A method of discharging particulate material from a hopper which minimizes vibration and impact loading is disclosed. The method provides a centrally located discharge column having a series of discharge openings extending vertically of an annular mass of particulate material in the hopper. The particulate material is discharged from a generally conically shaped, downwardly and inwardly directed, top portion of said mass of particulate material, progressively downwardly, through a choked flow discharge path provided by the interior of the discharge column.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: August 29, 1978
    Assignee: Allied Industries Inc.
    Inventor: James H. Leonard, Jr.
  • Vented gravity blender
    Patent number: 3936037
    Abstract: A gravity blender that discharges particulate material into a pressurized conveying system is provided with a conduit to substantially alleviate differential pressures between the blend chamber and the interior of the blender supply bin.
    Type: Grant
    Filed: May 22, 1974
    Date of Patent: February 3, 1976
    Assignee: Allied Industries, Inc.
    Inventor: James H. Leonard, Jr.