Patents by Inventor David L. McFarland

David L. McFarland 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: 7597154
    Abstract: A torque tube with slide out cage system for providing both structural support to the frame of the machine and a protective area for sensitive control systems for the machine. The torque tube with slide out cage system includes a torque tube attached between a first side and a second side of a frame, a side opening within the frame exposing the lumen of the torque tube, and a cage slidably positioned within the torque tube. The cage is capable of supporting various types of control systems such as a valve box, hydraulic systems and electronics.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: October 6, 2009
    Inventors: David L. McFarland, Clayton A. Melrose
  • Patent number: 7568300
    Abstract: A combination support stand and bucket locking system for providing both a support stand and a locking device for selectively preventing movement of a bucket with respect to an implement attached to a bucket. The combination support stand and bucket locking system includes a bucket, a locking bracket extending from the bucket, an implement that pivotally attaches to the bucket, an arm member pivotally attached to the implement wherein the distal portion of the arm member is capable of engaging the locking bracket, and an actuator connected between the arm member and the implement. The arm member includes a support stand for supporting the implement when the arm member is within the support position.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: August 4, 2009
    Inventors: David L. McFarland, Clayton A. Melrose
  • Patent number: 7491027
    Abstract: A pivoting loader attachment system for allowing an attachment to freely pivot with respect to a tractor's loader. The pivoting loader attachment system includes a pivoting connector pivotally attached to an attachment. The pivoting connector is attached to the front end connector of a front end loader. The pivoting connector pivots within a defined range of movement thereby limiting the range of movement the attachment makes with respect to a front end loader of a tractor.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 17, 2009
    Inventors: David L. McFarland, Clayton A. Melrose
  • Patent number: 7429158
    Abstract: An expandable implement attachment selectively connectable to a vehicle and having a frame assembly, a first bucket member laterally fixed to the frame assembly and a second bucket member laterally moveable relative to the frame assembly to provide a bucket with an adjustable width.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: September 30, 2008
    Inventor: David L. McFarland
  • Patent number: 7104338
    Abstract: A sweeper chain support system for allowing efficient removal of debris between a sweeper chain and a digger chain. The sweeper chain support system includes a rear roller supporting a rear portion of a sweeper chain, a pair of rear arms attached to the rear roller in a pivoting manner, a front roller supporting a front portion of the sweeper chain, a pair of front arms attached to the front roller in a pivoting manner, and a link member connected between the front arms and the rear arms. When the front arms are lifted, the rear arms are simultaneously lifted causing the front roller and the rear roller to lift upwardly thereby removing the weight of the lower run of the sweeper chain to allow for the removal of lodge debris (e.g. rock).
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: September 12, 2006
    Inventors: David L. McFarland, Clayton A. Melrose