Patents by Inventor Herman H. Hockmeyer

Herman H. Hockmeyer 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: 8733677
    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 method and an improvement for deterring wear at a bearing construct in the media basket mill precludes the entry into a bearing interface between a bearing surface of the bearing construct and a component rotating within the bearing construct of the very small media employed in the media basket mill. A barrier is interposed between the media held in the basket of the mill and the bearing interface so as to isolate the bearing interface from media within the basket and thereby deter the entry of media into the bearing interface and concomitant wear at the bearing interface.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: May 27, 2014
    Assignee: Hockmeyer Equipment Corp.
    Inventors: Michael A. Villardi, Shawnacy D. McManus, Herman H. Hockmeyer
  • 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: 7914200
    Abstract: An apparatus and method for mixing feedstock within a vessel wherein the feedstock is moved along a heat transfer surface within the vessel. A mixing blade assembly includes a mixing blade and at least one mixing blade support member moved within the vessel to sweep forward along a path of travel extending adjacent the heat transfer surface. Feedstock is circulated within the vessel by the mixing blade, and the mixing blade support member includes a mixing surface confronting the heat transfer surface. The mixing surface is spaced from the heat transfer surface and is configured such that feedstock material is squeezed between the mixing surface and the heat transfer surface so as to be subjected to mixing shear and heat transfer between the squeezed feedstock material and the heat transfer surface.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: March 29, 2011
    Inventors: Herman H. Hockmeyer, 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
  • Patent number: 7175118
    Abstract: Apparatus and method for dispersing solid constituents into a liquid vehicle employ an immersion mill operating in combination with a low shear mixer blade assembly which sweeps the walls of a tank containing a batch of solid constituents in a liquid vehicle to circulate the batch through the immersion mill to carry out a milling operation to establish a relatively high viscosity mixture having a high degree of uniformity. The immersion mill includes an improvement wherein a helical screw impeller is placed within a tubular inlet passage for moving the batch longitudinally through the tubular inlet passage into the immersion mill, the helical screw impeller including a helical flight extending along the length of the tubular inlet passage and having a diameter complementary to the diameter of the tubular inlet passage and a pitch less than the length of the tubular inlet passage such that the helical flight spans the diameter of the tubular inlet passage along plural turns of the helical flight.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: February 13, 2007
    Assignee: Hockmeyer Equipment Corp.
    Inventor: Herman H. Hockmeyer
  • Patent number: 5820040
    Abstract: A media basket mill has stirring rods each having a length extending radially into a media bed over a major portion of the radius of the media bed, and static rods juxtaposed with counterpart stirring rods for interacting with the counterpart stirring rods to attain combined attrition and rolling shear within the media bed, the static rods extending radially inwardly from the side wall of the basket along a major portion of the radial length of the counterpart stirring rods, so as to tend to stabilize the media bed in radial directions while increasing the combined attrition and rolling shear attained between the static rods and the counterpart stirring rods, the static rods being affixed either directly to the side wall or to an insert selectively seated within the basket.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: October 13, 1998
    Assignee: Hockmeyer Equipment Corp.
    Inventors: Herman H. Hockmeyer, He Zhu
  • Patent number: 5497948
    Abstract: A media basket mill for dispersing a selected constituent into a liquid vehicle to produce a mixture of the constituent and the liquid vehicle within a mixing vessel includes a basket extending in an axial direction between a upper end and a lower end, a media bed in the basket, and an impeller, the basket having a wall for retaining the media bed within the basket and openings in the wall for permitting passage of the mixture through the wall in response to operation of the impeller when the basket is immersed in the mixture in the vessel, the wall including a bottom wall portion at the lower end and an axially extending side wall portion having an overall diametral dimension, the openings being located at least in the side wall portion, the impeller including a rotor mounted for rotation about the axial direction, and impeller blades on the rotor, the impeller blades having at least blade portions located radially outwardly beyond the diametral dimension of the side wall portion of the wall of the basket fo
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: March 12, 1996
    Assignee: Hockmeyer Equipment Corp.
    Inventor: Herman H. Hockmeyer
  • Patent number: 5184783
    Abstract: A media basket mill is used for dispersing a selected constituent into a liquid vehicle to produce a mixture of the constituent and the liquid vehicle and includes a basket containing a media bed of discrete media elements for immersion within a batch of the constituent and the liquid vehicle in a mixing vessel, a first impellar for establishing a first pressure differential adjacent a first end of the basket for moving the mixture along a circuit through the basket, and through the media bed in the basket, when the basket is immersed in the batch in the vessel and a second impeller for establishing a second pressure differential adjacent a second end of the basket for assisting in the movement of the mixture along the circuit into the basket and through the basket, and through the media bed in the basket, to increase the throughput of the mixture through the basket and the media bed in the basket, while deterring escape of media elements from the basket the second end of the basket.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: February 9, 1993
    Assignee: Hockmeyer Equipment Corp.
    Inventors: Herman H. Hockmeyer, John A. Paterson