Patents by Inventor Barry W. Cullens

Barry W. Cullens 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: 9597691
    Abstract: An improvement in an apparatus and a method produces a particle dispersion by processing a particle-carrying feedstock passed from a supply vessel through a bed of media contained within a containment wall having an inlet end and a longitudinally opposite terminal end. An auxiliary chamber surrounds the containment wall so that the feedstock is passed from the bed of media, through the containment wall and into the auxiliary chamber while the media is contained within the bed of media. An external pumping mechanism established a pressure differential that draws the feedstock into the containment wall and through the bed of media, then through the containment wall into the auxiliary chamber, and then out of the auxiliary chamber at a location juxtaposed with the containment wall between the inlet end and the terminal end, while maintaining a negative pressure within the supply vessel and within the auxiliary chamber during processing of the feedstock.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: March 21, 2017
    Assignee: Hockmeyer Equipment Corp.
    Inventors: Herman H. Hockmeyer, Barry W. Cullens
  • Patent number: 8376252
    Abstract: Apparatus and method are disclosed for producing nanometer-range particle dispersions utilizing an immersion mill having a rotor for processing feedstock within a bed of media contained within a containment wall. An auxiliary chamber provides a chamber wall surrounding the containment wall and feedstock is passed from the bed of media, through the containment wall and into the auxiliary chamber while the media is contained within the bed of media. The feedstock is drawn from the bed of media, through the containment wall, and out of the auxiliary chamber, with an external pumping mechanism arranged for operation independent ofrotation of the rotor, whereby the containment wall is maintained unbroken by any direct connection between the rotor and the external pumping mechanism and remains effective in containing the media within the bed of media.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 19, 2013
    Assignee: Hockmeyer Equipment Corp.
    Inventors: Herman H. Hockmeyer, Barry W. Cullens, Benjamin G. Roberts, Michael William Turner
  • Patent number: 8182133
    Abstract: A mixing apparatus and method mixes constituents of a feedstock in a vessel, utilizing a mixing blade assembly rotated within the vessel in forward and reverse directions. The feedstock engages walls of the vessel, and scraper blades are carried by the mixing blade assembly to scrape feedstock from the walls of the vessel and direct scraped feedstock to feedstock being circulated within the vessel during rotation of the mixing blade assembly in either the forward direction or the reverse direction. The scraper blades each include scraper edges and are coupled to the mixing blade assembly for pivotal movement in response to engagement with feedstock during mixing, so as to juxtapose one or the other of opposite scraper edges of each scraper blade with the vessel wall for scraping feedstock during rotation of the mixing blade assembly in both the forward and reverse directions.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: May 22, 2012
    Assignee: Hockmeyer Equipment Corp.
    Inventors: Herman H. Hockmeyer, Barry W. Cullens, Matthew S. O'Kelley
  • Patent number: 7883036
    Abstract: The containment wall of a basket media mill is constructed of a sintered porous metal having porous openings each of a pore size less than the predetermined size of the media for confining the media within the bed in the basket as feedstock is passed through the porous openings in the containment wall. The containment wall extends over an overall area and the porous openings provide an open area through which the feedstock flows as the feedstock passes through the containment wall, and the open area is at least about twenty-one percent of the overall area of the containment wall for enabling a concomitant increased volumetric flow of feedstock through the containment wall. A substantially flat sheet of sintered porous metal having porous openings is formed into a cylindrical configuration to construct a cylindrical containment wall with porous openings each increasing in pore size from the interior of the cylindrical wall toward the exterior of the cylindrical wall.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: February 8, 2011
    Assignee: Hockmeyer Equipment Corp.
    Inventors: Barry W. Cullens, Herman H. Hockmeyer
  • Patent number: 7828234
    Abstract: The containment wall of a basket media mill is constructed of a porous synthetic polymeric material having porous openings each of a pore size less than the predetermined size of the media for confining the media within the bed in the basket as feedstock is passed through the porous openings in the containment wall. The containment wall extends over an overall area and the porous openings provide an open area through which the feedstock flows as the feedstock passes through the containment wall, and the open area is at least about fifteen percent of the overall area of the containment wall for enabling a concomitant increased volumetric flow of feedstock through the containment wall. A substantially flat sheet of porous synthetic polymeric material having porous openings is formed into a cylindrical configuration to establish a cylindrical containment wall with porous openings each increasing in pore size from the interior of the cylindrical wall toward the exterior of the cylindrical wall.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: November 9, 2010
    Inventors: Herman H. Hockmeyer, Barry W. Cullens
  • Patent number: 7559493
    Abstract: A media basket mill utilizes a media bed having very small media to attain a mixture of finely divided solids in a liquid vehicle. A bearing construct which journals the rotor of the basket mill within the basket of the mill includes a bearing which is protected against excessive wear by including a recess in the rotor. The recess is juxtaposed with the bearing and communicates with the media bed such that upon rotation of the rotor to pass feedstock through the media bed for a mixing operation, media and feedstock in the vicinity of the bearing will be directed from the recess into the bed of media and feedstock outside the rotor, thereby diverting media and feedstock away from the bearing and deterring excessive wear which might otherwise result from media and feedstock interacting with the bearing during rotation of the rotor for the mixing operation.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: July 14, 2009
    Assignee: Hockmeyer Equipment Corp.
    Inventors: Herman H. Hockmeyer, Barry W. Cullens