Patents by Inventor David C. Preece

David C. Preece 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: 7024989
    Abstract: An arrangement is proposed that responds to the upward movement of a discharge gate, which forms a rear housing section of a baling chamber to the cylindrical bale in such a way that contact elements of the arrangement are pressed into the surface of the cylindrical bale, preferably by means of a servo motor, in order to reliably grasp the cylindrical bale and move it together with the gate until the bale is free of a fixed forward section of the baling chamber.
    Type: Grant
    Filed: February 16, 2004
    Date of Patent: April 11, 2006
    Assignee: Deere & Company
    Inventor: David C. Preece
  • Publication number: 20040250708
    Abstract: An arrangement is proposed that responds to the upward movement of a discharge gate, which forms a rear housing section of a baling chamber to the cylindrical bale in such a way that contact elements of the arrangement are pressed into the surface of the cylindrical bale, preferably by means of a servo motor, in order to reliably grasp the cylindrical bale and move it together with the gate until the bale is free of a fixed forward section of the baling chamber.
    Type: Application
    Filed: February 16, 2004
    Publication date: December 16, 2004
    Applicant: Deere & Company, a Delaware corporation
    Inventor: David C. Preece
  • Patent number: 6293894
    Abstract: A roll for use in defining a baling chamber of a large round baler includes a tubular central body having stub shafts projecting from opposite ends thereof and secured thereto at locations within opposite ends of the tubular body. In one embodiment, a flange is formed integrally with each stub shaft and is welded to a tubular cylindrical extension inserted into a respective end of the tubular central body and secured there either by a press fit and/or welding. In a second embodiment, a flange is integral with each tubular extension as well as with each stub shaft with the flanges of the stub shafts being respectively bolted to the flanges of the extensions.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: September 25, 2001
    Assignee: Deere & Company
    Inventors: Jean Viaud, David C. Preece
  • Publication number: 20010003113
    Abstract: A roll for use in defining a baling chamber of a large round baler includes a tube having stub shafts projecting from opposite ends thereof and secured thereto at locations within opposite ends of the tube. In one embodiment, a flange is formed integrally with each stub shaft and is welded to a sleeve inserted into a respective end of the tube and secured there either by a press fit and/or welding. In a second embodiment, a flange is integral with each sleeve as well as with each stub shaft with the flanges of the stub shafts being respectively bolted to the flanges of the sleeves.
    Type: Application
    Filed: January 15, 1999
    Publication date: June 7, 2001
    Inventors: JEAN VIAUD, DAVID C. PREECE
  • Publication number: 20010001779
    Abstract: A roll for use in defining a baling chamber of a large round baler includes a tube having stub shafts projecting from opposite ends thereof and secured thereto at locations within opposite ends of the tube. In one embodiment, a flange is formed integrally with each stub shaft and is welded to a sleeve inserted into a respective end of the tube and secured there either by a press fit and/or welding. In a second embodiment, a flange is integral with each sleeve as well as with each stub shaft with the flanges of the stub shafts being respectively bolted to the flanges of the sleeves.
    Type: Application
    Filed: January 15, 1999
    Publication date: May 24, 2001
    Inventors: JEAN VIAUD, DAVID C. PREECE
  • Patent number: 6190253
    Abstract: Conventional agricultural combines are equipped with straw walkers for separating grain entrapped in the threshed crop mat. A rotary separator having two transverse rotors arranged one behind the other is positioned above the straw walkers. The rotors can be driven in the same or in opposite directions and are provided with tines for penetrating the crop mat. The tines are rotatively mounted to an eccentric axle located in the rotor housing.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: February 20, 2001
    Assignee: Deere & Company
    Inventor: David C. Preece