Mixers Or Agitators Patents (Class 416/231A)
  • Patent number: 5938325
    Abstract: An elongate rod having a first end or end area and an oppositely disposed second end or end area, the first end suitably structured for connecting to a rotary drive such as the chuck of a hand held drill type motor, food blender drive or the like for example, and the second end area including attached flexible line members extending generally perpendicular to the length of the elongate rod. In a preferred embodiment, the flexible line members are made of resilient plastics material such as lawn and weed trimmer type line. Additionally preferred is the line members being retained such that they extend on one side of the rod at a slight angle downward to extend below the terminal end of the second end of the rod for allowing stirring against a container bottom surface, and extend on an opposite side of the rod at a slight angle upward for allowing stirring against a container top surface or lid.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: August 17, 1999
    Inventor: Ron J. Edwards
  • Patent number: 5797728
    Abstract: An impeller for mixing includes a disk having substantially identical top and bottom surfaces, opposed and spaced apart from each other and including a plurality of holes extending through the disk and arranged symmetrically around a circle having a smaller diameter than the disk. A first set of troughs, corresponding to a number of the plurality of holes, each trough having a portion having a width corresponding substantially to a width of the holes, is arranged on the top surface of the disk and each trough slopes downwardly from a periphery of the disk toward each of the holes, respectively. A second set of troughs, corresponding to a number of said plurality of holes, each trough having a portion having a width corresponding substantially to a width of the holes, is arranged on the bottom surface of the disk and each trough slopes upwardly from a periphery of the disk toward each of the holes, respectively.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: August 25, 1998
    Inventor: Donald E. Frith
  • Patent number: 5785424
    Abstract: An agitator blade comprises one or more cylindrical local agitators which have inner fabrics therein and are radially mounted on a mounting frame, which in turn is secured to an agitator shaft. The inner fabrics can include, for example, one or more twisted plates, one or more orifice plates, a plurality of bent plates, which are disposed in an alternately inverted relationship with one another so that the facing bent peripheral side of the adjacent bent plates cross each other, a plurality of flat plates or one or more net-like sheets. The agitator shaft is rotated by a motor to drive the local agitators to mix the fluid throughly. When applied for agitation and mixing processes, the agitator blade of this invention can realize a high degree of mixing easily and reliably in a short period of time and with a small driving power. Further, the construction of this agitator blade is simple.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: July 28, 1998
    Assignee: Kansai Chemical Engineering Co. Ltd.
    Inventors: Yasuo Noda, Hideo Noda, Takaya Inoue
  • Patent number: 5762417
    Abstract: A mixing apparatus has a tank for holding a material to be mixed, a drive shaft rotatable in the tank, a radially inner impeller on the drive shaft with blades pitched to produce axial flow of the material in a first direction, and a radially outer impeller with blades pitched to produce axial flow in an opposite direction. The radially inner impeller can be a high solidity impeller disposed in a preferably-stationary flow shield occupying a portion of a circumference between the inner and outer impellers, and providing a barrier between the material flowing axially in opposite directions while leaving spaces for recirculation of material by radial flow at the ends of the opposite axial flows. The outer impeller can be coupled to the drive shaft by connecting members protruding radially through axial spaces provided in or around the flow shield. Baffles are fixed in the tank and support the flow shield.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: June 9, 1998
    Assignee: Philadelphia Mixers
    Inventors: John Von Essen, Wojciech Wyczalkowski
  • Patent number: 5470148
    Abstract: The apparatus for mixing cement includes a shaft connected to an engine for rotating the shaft. The shaft has mounted thereon a plurality of paddles for providing a pushing force and arranged so as to channel the flow of cement mix about the shaft to allow complete and efficient mixing. In one embodiment the paddles are arranged with faces parallel to the axis of the shaft and apertures are cutout for controlling the flow. In another embodiment, the paddles are notched plates that are bent to provide pushing surfaces and formed so as to channel the flow about the shaft.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: November 28, 1995
    Inventors: Richard H. Gorr, Gunther R. Siegel
  • Patent number: 5326168
    Abstract: A stirring blade unit includes a plurality of main blade bodies radially projected from the outer periphery of a boss and auxiliary blade bodies respectively provided at tip portions of the main blade bodies in a manner so as to be downwardly projected. With this arrangement, it is possible to prevent swinging of the rotational shaft, the fabrication and mounting of the auxiliary blade bodies is made easier, material costs are reduced, and the mounting space required is reduced.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: July 5, 1994
    Assignee: Satake Chemikal Equipment Mfg., Ltd.
    Inventor: Akio Miura
  • Patent number: 5318360
    Abstract: A gas dispersion stirrer comprises a rotatable hollow shaft and at least one circular hollow stirring member disposed thereon wherein the cavity in the stirring member communicates with the hollow shaft. The stirring member has aeration apertures disposed in an outer peripheral portion thereof. The stirring member has flow-inducing blades for radially directing the liquid from the hollow shaft toward the aeration apertures. The gas dispersion stirrer effectively aerates liquids and achieves an improvement in mass transfer.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: June 7, 1994
    Assignee: Stelzer Ruhrtechnik GmbH
    Inventors: Gert Langer, Udo Werner
  • Patent number: 5277550
    Abstract: A plurality of flat plates are laterally disposed at an outer circumference of a hub and auxiliary vanes are disposed in parallel to at least side edges of each of said flat plates while being spaced apart from the side edges. Accordingly, an occurrence of eddy flows can be restricted, a peeling-off eddy flow can be reduced, agitating and mixing of gas-liquid can be made efficient without producing any damage to microorganisms or the like and an agitating efficiency can be improved with a simple structure.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: January 11, 1994
    Assignee: Satake Chemikal Equipment Mfg., Ltd.
    Inventors: Kohichi Kato, Shigeru Nishioka
  • Patent number: 5261745
    Abstract: An improved mixing apparatus for mixing a liquid and a particulate solid material within a container such that the pigments and/or other solid particulate materials, which are initially precipitated out and usually accumulated at the bottom of the container, are rapidly and thoroughly mixed and dispersed throughout the liquid in a uniform manner such that substantially all of the particulate material is dispersed within the liquid. In one embodiment, a flow pattern in the form of an inverted vortex rising from the bottom center of the container is created by a rotating frusto-conically shaped impeller to pull the particulate material away from the bottom of the container. In another embodiment, the apparatus includes a cover mechanism, which is made to function integrally with the mixing apparatus, and which covers the container during the mixing operation to prevent the escape of fumes or spray.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: November 16, 1993
    Inventor: James R. Watkins
  • Patent number: 5253980
    Abstract: An agitating vane in which a plate-like vane is disposed at an extreme end of a rotary shaft to agitate liquid has a feature that auxiliary vanes for covering a part of vane with a clearance being left are disposed in front of the surface of the vane in its rotational direction. Accordingly, a phenomenon of peeling-off caused by the eddy flow generated at the rear surface of the vane is eliminated by liquid flowing at a high speed at a clearance between the vane and the auxiliary vanes, a circulation flow of regulated flow state is attained and agitating efficiency is improved.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: October 19, 1993
    Assignee: Satake Chemikal Equipment Mfg., Ltd.
    Inventors: Shigeru Nishioka, Mikio Asai
  • Patent number: 5211924
    Abstract: Improved mixing performance with reduced power input is obtained in an agitated oxidation reactor for converting an aromatic alkyl to the corresponding aromatic carboxylic acid by decreasing the clearance between the lowermost impeller element and the reactor bottom and by providing a flat blade turbine as the upper impeller element.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: May 18, 1993
    Assignee: Amoco Corporation
    Inventors: Myon K. Lee, William F. Huber, Jr.
  • Patent number: 5090816
    Abstract: The invention features a mixing device comprising a rotatable impeller having a multiplicity of blades. Each blade of the impeller has an optimal angle of attack with respect to the fluid being mixed.An elliptical, fluid flow-through aperture in each blade provides for an improved flow stream about the impeller blades. The impeller is mountable upon a rotatable shaft which can be rotatively driven by a household drill.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: February 25, 1992
    Inventor: Thomas Socha
  • Patent number: 4092513
    Abstract: The field stirrer herein has an upwardly concave pan shape and is formed as a sheet metal stamping. It has a central planar section and a surrounding section comprising a plurality of circumferentially arranged segments with planar surfaces, the segments being shaped like equilateral trapezoids. The surrounding section has three circumferentially spaced segment groups in which the individual segments thereof slope upwardly at an angle of approximately 45.degree. relative to the planar section. Each of the segment groups includes at least three of the segments which are laterally joined by folded edges. There are also three individually mounted segments arranged alternately relative to the three segment groups which slope upwardly at an angle of approximately 27.degree. relative to the central planar section. At least one segment in each segment group has a rectangularly shaped opening with a rectangularly shaped flap extending vertically downwardly from the upper edge of said opening.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: May 30, 1978
    Assignee: Litton Systems, Inc.
    Inventor: Glenn O. Rasmussen
  • Patent number: 4083653
    Abstract: A stirring device employs a shaft-mounted hub with five axially nested, radially extendable fins shaped to not only provide compact nesting of five fins to enter a bung opening of a drum, but also to provide ample surface area when extended for stirring.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: April 11, 1978
    Inventor: Hugh A. Stiffler
  • Patent number: 4021024
    Abstract: Vessel internals comprising at least one novel perforated, baffle-impellor combination attached to rotatable drive shaft are disclosed for use in a stirred, horizontal vessel containing solid particulate matter. Using such internals, dense masses present in such particulate can be efficiently concentrated towards one end of said vessel while maintaining in-place mixing of the particulate matter.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: May 3, 1977
    Assignee: Standard Oil Company (Indiana)
    Inventor: Michael A. Stasi