Patents by Inventor Edward A. Packard

Edward A. Packard 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).

  • Vibratory feeder
    Patent number: 5375694
    Abstract: A vibratory feeder for cohesive particulate solids such as powders and the like. A conveyor frame supports a flexible conveyor membrane and is excited by a vibrator. The vibrator produces standing waves defined by nodes in the sectional configuration of the membrane transverse to the direction of material flow, with the sections between the nodes effecting periodic, alternately inverting flexures to release adhering solids.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: December 27, 1994
    Assignee: Hyer Industries, Inc.
    Inventors: Philip H. Sanford, Edward A. Packard
  • Volumetric dry material feeder
    Patent number: 5215228
    Abstract: A volumetric dry material feeder comprising a movable wall hopper. Nesting lower and end wall hopper components receive and clamp a flexible diaphragm sheet in position to overlie mutually opposing hopper walls and to receive and isolate the material therefrom. A pair of thrust plates are each located between the diaphragm and a hopper wall and alternately displaced relative thereto at differing frequencies to produce a continually varying combination of thrust plate movements.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: June 1, 1993
    Assignee: Hyer Industries, Inc.
    Inventors: Robert L. Andrews, Edward A. Packard