Patents by Inventor Andrew P. Mitchell

Andrew P. Mitchell 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: 7244087
    Abstract: The present invention is directed to a system and a method to unload bulk powders from large bulk containers. The system and method are particularly useful for unloading bulk cohesive powders.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: July 17, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Catherine Marie Wilson, Timothy Allan Bell, John D. Connolly, Jr., Peter Carl Clark, Andrew P. Mitchell, James E. Mothersbaugh
  • Patent number: 7229242
    Abstract: The present invention is directed to a system and a method to unload bulk powders from large bulk containers. The system and method are particularly useful for unloading bulk cohesive powders.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: June 12, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Timothy Allan Bell, Peter Carl Clark, John D. Connolly, Jr., Catherine Marie Wilson, Andrew P. Mitchell, James E. Mothersbaugh
  • Patent number: 6502689
    Abstract: An apparatus for conveying bulk material generally consisting of a support, a guide member defining a passageway providing a circuitous path, having a base section supported on the support and a section cantilevered relative to the support; at least two sprockets disposed in such passageway and rotatably supported on the guide member, one of such sprockets being disposed in the cantilevered section of the guide member and having a substantially vertically disposed axis of rotation; a rope assembly including an endless rope disposed in the passageway along the circuitous path and reeved around the sprockets, and a plurality of discs spaced along such rope, and a motor for driving one of the sprockets, wherein the guide member includes a inlet communicating with the passageway for feeding material therein and a discharge outlet communicating with the passageway about a portion of the periphery of the one socket.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: January 7, 2003
    Assignee: The Young Industries, Inc.
    Inventors: Andrew P. Mitchell, Richard W. Ambs, Todd E. Kaufman
  • Patent number: 6503042
    Abstract: An apparatus for conveying bulk material generally consisting of a support, a guide member defining a passageway providing a circuitous path, having a base section supported on the support and a section cantilevered relative to the support; at least two sprockets disposed in such passageway and rotatably supported on the guide member, one of such sprockets being disposed in the cantilevered section of the guide member and having a substantially vertically disposed axis of rotation; a rope assembly including an endless rope disposed in the passageway along the circuitous path and reeved around the sprockets, and a plurality of discs spaced along such rope, and a motor for driving one of the sprockets, wherein the guide member includes a inlet communicating with the passageway for feeding material therein and a discharge outlet communicating with the passageway about a portion of the periphery of the one socket.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: January 7, 2003
    Assignee: The Young Industries, Inc.
    Inventors: Andrew P. Mitchell, Richard W. Ambs, Todd E. Kaufman
  • Patent number: 6499927
    Abstract: An apparatus for conveying bulk material generally consisting of a support, a guide member defining a passageway providing a circuitous path, having a base section supported on the support and a section cantilevered relative to the support; at least two sprockets disposed in such passageway and rotatably supported on the guide member, one of such sprockets being disposed in the cantilevered section of the guide member and having a substantially vertically disposed axis of rotation; a rope assembly including an endless rope disposed in the passageway along the circuitous path and reeved around the sprockets, and a plurality of discs spaced along such rope, and a motor for driving one of the sprockets, wherein the guide member includes a inlet communicating with the passageway for feeding material therein and a discharge outlet communicating with the passageway about a portion of the periphery of the one socket.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: December 31, 2002
    Assignee: The Young Industries, Inc.
    Inventors: Andrew P. Mitchell, Richard W. Ambs, Todd E. Kaufman
  • Patent number: 6499585
    Abstract: An apparatus for conveying bulk material generally consisting of a support, a guide member defining a passageway providing a circuitous path, having a base section supported on the support and a section cantilevered relative to the support; at least two sprockets disposed in such passageway and rotatably supported on the guide member, one of such sprockets being disposed in the cantilevered section of the guide member and having a substantially vertically disposed axis of rotation; a rope assembly including an endless rope disposed in the passageway along the circuitous path and reeved around the sprockets, and a plurality of discs spaced along such rope, and a motor for driving one of the sprockets, wherein the guide member includes a inlet communicating with the passageway for feeding material therein and a discharge outlet communicating with the passageway about a portion of the periphery of the one socket.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: December 31, 2002
    Assignee: The Young Industries, Inc.
    Inventors: Andrew P. Mitchell, Richard W. Ambs, Todd E. Kaufman
  • Publication number: 20020127066
    Abstract: An apparatus for conveying bulk material generally consisting of a support, a guide member defining a passageway providing a circuitous path, having a base section supported on the support and a section cantilevered relative to the support; at least two sprockets disposed in such passageway and rotatably supported on the guide member, one of such sprockets being disposed in the cantilevered section of the guide member and having a substantially vertically disposed axis of rotation; a rope assembly including an endless rope disposed in the passageway along the circuitous path and reeved around the sprockets, and a plurality of discs spaced along such rope, and a motor for driving one of the sprockets, wherein the guide member includes a inlet communicating with the passageway for feeding material therein and a discharge outlet communicating with the passageway about a portion of the periphery of the one socket.
    Type: Application
    Filed: January 24, 2002
    Publication date: September 12, 2002
    Inventors: Andrew P. Mitchell, Richard W. Ambs, Todd E. Kaufman
  • Publication number: 20020127065
    Abstract: An apparatus for conveying bulk material generally consisting of a support, a guide member defining a passageway providing a circuitous path, having a base section supported on the support and a section cantilevered relative to the support; at least two sprockets disposed in such passageway and rotatably supported on the guide member, one of such sprockets being disposed in the cantilevered section of the guide member and having a substantially vertically disposed axis of rotation; a rope assembly including an endless rope disposed in the passageway along the circuitous path and reeved around the sprockets, and a plurality of discs spaced along such rope, and a motor for driving one of the sprockets, wherein the guide member includes a inlet communicating with the passageway for feeding material therein and a discharge outlet communicating with the passageway about a portion of the periphery of the one socket.
    Type: Application
    Filed: January 24, 2002
    Publication date: September 12, 2002
    Inventors: Andrew P. Mitchell, Richard W. Ambs, Todd E. Kaufman
  • Publication number: 20020127063
    Abstract: An apparatus for conveying bulk material generally consisting of a support, a guide member defining a passageway providing a circuitous path, having a base section supported on the support and a section cantilevered relative to the support; at least two sprockets disposed in such passageway and rotatably supported on the guide member, one of such sprockets being disposed in the cantilevered section of the guide member and having a substantially vertically disposed axis of rotation; a rope assembly including an endless rope disposed in the passageway along the circuitous path and reeved around the sprockets, and a plurality of discs spaced along such rope, and a motor for driving one of the sprockets, wherein the guide member includes a inlet communicating with the passageway for feeding material therein and a discharge outlet communicating with the passageway about a portion of the periphery of the one socket.
    Type: Application
    Filed: January 24, 2002
    Publication date: September 12, 2002
    Inventors: Andrew P. Mitchell, Richard W. Ambs, Todd E. Kaufman
  • Patent number: 6415909
    Abstract: An apparatus for conveying bulk material generally consisting of a support and a guide means defining a passageway. The passageway has a vertical section and a horizontal section cantilevered to the vertical section. A endless rope assembly passes around the passageway. Disc are displaced along the rope to catch and transfer bulk material along the passageway. The bulk material is injected into the passageway at the lower end of the vertical section and is ejected at the end of the horizontal section. A motor drives sprockets located at the ends of the passageway and at the cantilevered portion. Such guide means may consist of a single passageway or a pair of passageways of differing lengths, and such support may be movable on wheels.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: July 9, 2002
    Assignee: The Young Industries, Inc.
    Inventors: Andrew P. Mitchell, Richard W. Ambs, Todd E. Kaufman
  • Patent number: 5070910
    Abstract: A diverter valve adapted for use in a pneumatic conveying system for transporting bulk materials comprising a housing having a chamber provided with a cylindrical wall, the cylindrical wall having an inlet port communicating with an inlet passageway in the housing and first and second outlet ports communicating with first and second passageways in the housings, respectively, a rotor disposed in the chamber and having a cylindrical wall disposed in opposed relation to the chamber cylindrical wall, the rotor cylindrical wall having first and second ports and an intercommunicating passageway, the rotor ports being spaced apart a sufficient distance whereby upon the rotor being rotated into a first position relative to the housing, the first rotor port will register with the housing inlet port and the second rotor port will register with the first housing outlet port to intercommunicate the housing inlet passageway with the first housing outlet passageway, and upon the rotor being rotated into a second position r
    Type: Grant
    Filed: April 30, 1991
    Date of Patent: December 10, 1991
    Assignee: The Young Industries, Inc.
    Inventors: James E. Mothersbaugh, Galen S. Ingram, Andrew P. Mitchell