Patents by Inventor David S. Larson

David S. Larson 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: 20040187363
    Abstract: A ripper attachment (120) for an excavation device (20) includes a pair of spaced-apart, generally triangular-shaped plate members (122, 124) configured for connection to the excavation device (20). Each of the plate members (122, 124) has a first interface section, a second interface section, and a third interface section. A body (54) of the ripper attachment (120) has a ripper tip (60) disposed on a distal end (62) and first and second mounting sections (64, 66) disposed on a proximal end (68). The first mounting section (64) is removably attachable to the first interface section of each of the plate members (122, 124), and the second mounting section (66) is removably attachable to the second interface section of the plate members (122, 124). A brace element is interposed between the plate members (122, 124) and is coupled to the third interface area of each of said plate members (122, 124).
    Type: Application
    Filed: November 5, 2003
    Publication date: September 30, 2004
    Inventor: David S. Larson
  • Patent number: 6671984
    Abstract: A ripper attachment (22) for an excavation device (20) includes first and second support members (50, 52) configured for connection to the excavation device (20). In particular, first and second support members (50, 52) are adapted to connect to a coupling apparatus (30) of a tool coupler (28) so that the ripper attachment (22) is fixed relative to the coupling apparatus (30). A body (54) of the ripper attachment (22) is disposed between the first and second support members (50, 52). The body (54) has a ripper tip (60) disposed on a distal end (62) and first and second mounting sections (64, 66) disposed on a proximal end (68). The first and second mounting sections (64, 66) of the body (54) are removably attachable to an interface area (70) of the first and second support members (50, 52). A brace element (56) of the ripper attachment (22) is interposed between and couple together the first and second support members (50, 52).
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: January 6, 2004
    Inventor: David S. Larson
  • Publication number: 20030167661
    Abstract: A ripper attachment (22) for an excavation device (20) includes first and second support members (50, 52) configured for connection to the excavation device (20). In particular, first and second support members (50, 52) are adapted to connect to a coupling apparatus (30) of a tool coupler (28) so that the ripper attachment (22) is fixed relative to the coupling apparatus (30). A body (54) of the ripper attachment (22) is disposed between the first and second support members (50, 52). The body (54) has a ripper tip (60) disposed on a distal end (62) and first and second mounting sections (64, 66) disposed on a proximal end (68). The first and second mounting sections (64, 66) of the body (54) are removably attachable to an interface area (70) of the first and second support members (50, 52). A brace element (56) of the ripper attachment (22) is interposed between and couple together the first and second support members (50, 52).
    Type: Application
    Filed: March 6, 2002
    Publication date: September 11, 2003
    Inventor: David S. Larson
  • Patent number: 5456028
    Abstract: In an excavating apparatus including a bucket removably coupled to a distal end of a hydraulically powered boom, a field-detachable and field-attachable ripper comprises a shank portion having a lower tip, a mounting portion disposed along an upper area of the shank portion and a detachable and re-attachable coupling element disposed along the mounting portion. The detachable and re-attachable coupling element secures the ripper to the bucket. There is optionally further included a detachable ripper tip coupled to the lower tip. The detachable ripper tip comprises a metal piece having a point disposed at a first end thereof and having a hollow disposed at a second end thereof. The hollow is adapted to accommodate the lower tip therein. The detachable ripper tip further includes an opening disposed on one side thereof and extending into the hollow. The opening is adapted to accommodate a fastener extending from the side and into the lower tip.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: October 10, 1995
    Inventor: David S. Larson