Tooth Structure Patents (Class 460/121)
  • Patent number: 11925145
    Abstract: A harvesting machine that has a first rotor rotationally coupled to a chassis, a second rotor rotationally coupled to the chassis, and a spine separating the first rotor from the second rotor. Wherein the spine has threshing inserts coupled thereto to facilitate threshing of crop processed by the first and second rotors.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: March 12, 2024
    Assignee: DEERE & COMPANY
    Inventors: Manish Singh, Michael T. Meschke, Mark L. Mattson, Corey A. Noord
  • Patent number: 11464169
    Abstract: A threshing concave assembly is disclosed having a threshing concave bar wherein the threshing bar is comprised of two threshing surfaces having a dihedral angle relationship relative to each other. In addition, in another aspect the threshing bar can be comprised of two dihedral surfaces whereby one surface face has about 130% greater surface area than its adjacent surface face. Alternatively, one surface face of the threshing bar can be 1.3x wider than its adjacent surface face. In another aspect the threshing bar can be comprised of two dihedral surfaces whereby one surface face has about a 170% greater surface area than its adjacent surface face.
    Type: Grant
    Filed: March 21, 2020
    Date of Patent: October 11, 2022
    Inventor: Brian G. Robertson
  • Patent number: 6375564
    Abstract: A rotary combine is equipped with a rotor that has a separating portion having at least one ramp segment mounted to the rotor. The ramp segments provide an inclined face that directs the grain radially outward as the ramp segments move through the crop material. The ramp segments are intermixed with tines on the separator section of the rotor. The ramp segments provide a face that is trapezoidal in shape, having inwardly inclined front and rear edges so that the radially distal edge of the face is shorter than the proximal edge of the face. The trapezoidal shape of the ramp segments assists the ramp segments in shedding crop material and thereby preventing the crop material from becoming entangled thereon.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: April 23, 2002
    Assignee: Deere & Company
    Inventors: Craig Amann, Daniel Marc Heim, Corwin Marcus Raymond Puryk
  • Patent number: 6044636
    Abstract: A farm implement for harvesting corn (sometimes called maize). The harvester is usable with a farm type combine and is particularly designed to be used in fields that have been planted either by a broadcast method at ground level or from the air, or in clearly spaced rows at spacings which might vary from the usual. The harvester is distinguished by the ear-stripping fingers on a reel at the front of the carrying combine. The fingers strip the ears from the corn stalks in front of the carrying combine and carry them to a delivery auger, which is a standard part of the combine, to be delivered to husking rolls in the combine for husking.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: April 4, 2000
    Inventor: Eric Minnaert
  • Patent number: 5895320
    Abstract: A polyurethane sugar beet flail including one or more tapered arms which radiate from a hub that contains a hardened support bearing. One multi-arm flail includes a support hub containing a bored nylon bearing having a pair of co-planar arms which radiate from a tapered transition region of the hub. A channel separates the arms. Another multi-arm flail includes a pair of arms staggered about the circumference of the hub. Another flail provides a single arm.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: April 20, 1999
    Inventor: Gary G. Carlson
  • Patent number: 5570571
    Abstract: A blade for a flail type brush cutting machine. The blade is torch cut or cast from thick metal in a generally L shape to have any desired angle between its stem and floor, in the preferred embodiment the angle is ninety degrees to insure a close cut of brush. The thicker metal will cut thicker brush. A resharpenable cutting edge is also torch cut or cast on the floor of the blade making the cutting edge of the blade resharpenable and renewable by repeat torch cutting. An elliptically shaped attaching hole is also torch cut or cast in the stem of the blade for attaching the blade to a hanger to then be attached to the shaft of the flail cutter. This attaching hole can also be torch cut or cast into any desired shape. A method of providing a blade for a flail type brush cutting machine is also disclosed.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: November 5, 1996
    Inventor: Jimmie J. Dallman
  • Patent number: 5376047
    Abstract: An improved crop engaging element for the threshing and separating sections of an axial rotor. The elements comprise a blade having a mounting plate that is mounted to the rotor drum and a sloped crop engaging plate extending upwardly from the mounting plate. The crop engaging plate is provided with a radially extending lip. The crop engaging plate is also provided with a slanted leading edge.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: December 27, 1994
    Assignee: Deere & Company
    Inventors: Philip A. Harden, Mark F. Stickler
  • Patent number: 5309702
    Abstract: Impact cutter teeth that cut and lift the crop to improve both cutting and transport of the crop are novel features of this invention. The novel construction of this tooth results in actions which reduce undesired recut characteristics present in impact cutters with prior art teeth.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: May 10, 1994
    Assignee: Lundahl Research, Inc.
    Inventors: E. Cordell Lundahl, Laurel H. Jensen
  • Patent number: 5036653
    Abstract: The apparatus for harvesting crops, particularly seed crops, comprises a mobile support structure 20 and a crop stripping device in the form of a rotor 30, which may be attached to height adjustable arms and is driven by drive means 22. The rotor 30 carries transverse rows of crop engaging elements 32 comprising loosening beaters and/or combing teeth. The drive to the rotor is so arranged that during forward movement of the apparatus the crop engaging elements 32 are propelled progressively through the crop, moving upwards at the front region. Seeds and other plant parts detached by the action of the rotor are impelled into a crop flow passage 27 under a crop guide cover 21. A transverse auger 83 transfers the detached material into a duct 84 where an elevator 85 moves it over a screen 86 for separation of the seeds. The coarse crop material is directed for further processing to recover remaining seeds.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: August 6, 1991
    Inventor: Wilfred E. Klinner