Patents by Inventor John W. Stephen

John W. Stephen 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).

  • Publication number: 20040177599
    Abstract: A modular powder recovery apparatus includes a base unit, one or more cartridge filters, and a wrapper that at least partially encloses the cartridge filters. The wrapper is designed to allow additional wrappers to be vertically stacked thereon to increase the overall height of the wrapper, thus permitting additional filter capacity without changing the base unit. The base unit is modular in design so that the size of the apparatus may be increased with a minimum of cost and waste.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 16, 2004
    Inventors: John W. Stephens, Donald L. Urig
  • Patent number: 6780247
    Abstract: A modular powder recovery apparatus includes a base unit, one or more cartridge filters, and a wrapper that at least partially encloses the cartridge filters. The wrapper is designed to allow additional wrappers to be vertically stacked thereon to increase the overall height of the wrapper, thus permitting additional filter capacity without changing the base unit. The base unit is modular in design so that the size of the apparatus may be increased with a minimum of cost and waste.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: August 24, 2004
    Assignee: Nordson Corporation
    Inventors: John W. Stephens, Donald L. Urig
  • Publication number: 20030024218
    Abstract: A modular powder recovery apparutus includes a base unit, one or more cartridge filters, and a wrapper that at least partially encloses the cartridge filters. The wrapper is designed to allow additional wrappers to be vertically stacked thereon to increase the overall height of the wrapper, thus permitting additional filter capacity without changing the base unit. The base unit is modular in design so that the size of the apparatus may be increased with a minimum of cost and waste.
    Type: Application
    Filed: June 6, 2002
    Publication date: February 6, 2003
    Inventors: John W. Stephens, Donald L. Urig
  • Patent number: 6514305
    Abstract: A modular powder recovery apparatus includes a base unit, one or more cartridge filters, and a wrapper that at least partially encloses the cartridge filters. The wrapper is designed to allow additional wrappers to be vertically stacked thereon to increase the overall height of the wrapper, thus permitting additional filter capacity without changing the base unit. A modular cartridge assembly is provided to facilitate color change operations. A fan cone is provided in the base unit to permit fan wheel size changes without requiring structural modifications to the base unit housing.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: February 4, 2003
    Assignee: Nordson Corporation
    Inventors: John W. Stephens, Donald L. Urig
  • Publication number: 20020095917
    Abstract: A modular powder recovery apparatus includes a base unit, one or more cartridge filters, and a wrapper that at least partially encloses the cartridge filters. The wrapper is designed to allow additional wrappers to be vertically stacked thereon to increase the overall height of the wrapper, thus permitting additional filter capacity without changing the base unit. A modular cartridge assembly is provided to facilitate color change operations. A fan cone is provided in the base unit to permit fan wheel size changes without requiring structural modifications to the base unit housing.
    Type: Application
    Filed: March 18, 2002
    Publication date: July 25, 2002
    Inventors: John W. Stephens, Donald L. Urig
  • Patent number: 6419720
    Abstract: A modular powder recovery apparatus includes a base unit, one or more cartridge filters, and a wrapper that at least partially encloses the cartridge filters. The wrapper is designed to allow additional wrappers to be vertically stacked thereon to increase the overall height of the wrapper, thus permitting additional filter capacity without changing the base unit. A modular cartridge assembly is provided to facilitate color change operations. A fan cone is provided in the base unit to permit fan wheel size changes without requiring structural modifications to the base unit housing.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: July 16, 2002
    Assignee: Nordson Corporation
    Inventors: John W. Stephens, Donald L. Urig
  • Patent number: 5904003
    Abstract: The stadium with retractable cover includes a peripheral wall defining an open top and a top peripheral edge. At least one floatation device is included which is adapted to rise in air. Next provided is at least one canopy mounted to the floatation device. At least one retraction assembly is adapted for selectively transferring the canopy between a closed orientation for closing the open top of the peripheral wall and an open orientation for exposing the open top of the peripheral wall.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: May 18, 1999
    Inventor: John W. Stephen