Patents by Inventor Lawrence William Bergquist

Lawrence William Bergquist 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).

  • Publication number: 20100051301
    Abstract: A motor grader is disclosed having a coated wear insert.
    Type: Application
    Filed: March 10, 2008
    Publication date: March 4, 2010
    Applicant: DEERE & COMPANY
    Inventors: Dustin Thomas Staade, Lawrence William Bergquist
  • Patent number: 7617881
    Abstract: An articulated dozer with a four point independent suspension system between a chassis and two support frames is described. The chassis includes a front chassis portion and a rear chassis portion connected by an articulation joint. The vehicle is compactly arrange so that the chassis and the two support frames fit between the track systems supporting and propelling the vehicle. Additionally, the engine is arranged near the articulation joint and lower than the top of the track systems for improved view and visibility. The cab is arranged over the track systems at the front of the vehicle for an optimal view of the blade.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: November 17, 2009
    Assignee: Deere & Company
    Inventors: Daniel Dean Radke, Scott Svend Hendron, Kenneth Edward Poppe, Lawrence William Bergquist, James Arthur Nagorcka, Lyal Douglas Allen
  • Patent number: 7581598
    Abstract: An articulated loader has an articulated chassis and corresponding A-frames. The points of the A-frames face each other. The articulated chassis includes a front portion and a rear portion. Likewise, there is a front or first A-frame and a rear or second A-frame. The A-frames are connected to the overall chassis at points close to but offset from the point of vehicle articulation via ball joints and via hydraulic suspension cylinders toward the wider portions of the “A”s. The tracks are independently suspended. The C-frame and blade are mounted to the first A-frame while the controlling cylinders are mounted to the front chassis portion. This allows the blade to follow the tracks or ground and yet stabilize its motion.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: September 1, 2009
    Assignee: Deere & Company
    Inventors: Daniel Dean Radke, James Arthur Nagorcka, Lyal Douglas Allen, Lawrence William Bergquist
  • Patent number: 7503411
    Abstract: An articulated loader has an articulated chassis and two A-frames. The points of the A-frames face each other. The articulated chassis includes a front portion and a rear portion. Likewise, there is a front or first A-frame and a rear or second A-frame. The A-frames are connected to the overall chassis at points close to but offset from the point of vehicle articulation via ball joints and via hydraulic suspension cylinders toward the wider portions of the “A”s. The vehicle is propelled along the ground by tracks that are independently suspended. The A-frames are of approximate equal length along the axis of the vehicle and the ball joints are located as close as practical to the articulation joint. Thus, any vertical forces at the ball joints due to variations in tractive efforts for the vehicle tend to be equal and opposite in direction and to, therefore, minimize any chassis height variations.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: March 17, 2009
    Assignee: Deere & Company
    Inventors: Daniel Dean Radke, James Arthur Nagorcka, Lyal Douglas Allen, Lawrence William Bergquist