Patents by Inventor Todd H. Greenwood

Todd H. Greenwood 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: 6813850
    Abstract: A continuous ditch excavator includes an excavating auger rotatably mounted on a chassis in a centrally-disposed excavation work area defined by forward and rear portions. Two driving elements are rotatably-mounted in laterally spaced-apart relation to each other on the chassis. The auger is moved laterally between the first and second driving elements to permit adjustment of the position of the auger in relation to the first and second driving elements. In another embodiment, the auger is carried by an arm rotatably mounted to the chassis. In yet another embodiment, the excavator includes a plurality of excavating augers independently raised and lowered to vary the width of the ditch.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: November 9, 2004
    Inventor: Todd H. Greenwood
  • Publication number: 20040016152
    Abstract: A continuous ditch excavator includes an excavating auger rotatably mounted on a chassis in a centrally-disposed excavation work area defined by forward and rear portions. Two driving elements are rotatably-mounted in laterally spaced-apart relation to each other on the chassis. The auger is moved laterally between the first and second driving elements to permit adjustment of the position of the auger in relation to the first and second driving elements. In another embodiment, the auger is carried by an arm rotatably mounted to the chassis. In yet another embodiment, the excavator includes a plurality of excavating augers independently raised and lowered to vary the width of the ditch.
    Type: Application
    Filed: July 23, 2002
    Publication date: January 29, 2004
    Inventor: Todd H. Greenwood
  • Patent number: 6571492
    Abstract: A continuous ditch excavator including a chassis having a forward portion and a rear portion, first and second motive elements carried by the chassis in laterally spaced-apart relation to each other for cooperatively driving the chassis along a ground surface, the first and second motive elements defining a centrally-disposed excavation work area therebetween, and an excavating auger mounted on the chassis in the excavation work area forwardly of the rear portion of the chassis and rearwardly of the forward portion of the chassis for penetrating and excavating a ditch in the ground as the chassis is driven along the ground,the auger defining a pivot point about which the first and second motive means are adapted to rotate the chassis to control the direction of ditch excavation.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: June 3, 2003
    Inventor: Todd H. Greenwood
  • Publication number: 20020062585
    Abstract: A continuous ditch excavator including a chassis having a forward portion and a rear portion, first and second motive means carried by the chassis in laterally spaced-apart relation to each other for cooperatively driving the chassis along a ground surface, the first and second motive means defining a centrally-disposed excavation work area therebetween, and an excavating auger mounted on the chassis in the excavation work area forwardly of the rear portion of the chassis and rearwardly of the forward portion of the chassis for penetrating and excavating a ditch in the ground as the chassis is driven along the ground, said auger defining a pivot point about which the first and second motive means are adapted to rotate the chassis to control the direction of ditch excavation.
    Type: Application
    Filed: October 22, 2001
    Publication date: May 30, 2002
    Inventor: Todd H. Greenwood
  • Patent number: 6305879
    Abstract: A continuous ditch excavator including a chassis having a forward portion and a rear portion, first and second motive devices carried by the chassis in laterally spaced-apart relation to each other for cooperatively driving the chassis along a ground surface, the first and second motive devices defining a centrally-disposed excavation work area therebetween, and an excavating auger mounted on the chassis in the excavation work area forwardly of the rear portion of the chassis and rearwardly of the forward portion of the chassis for penetrating and excavating a ditch in the ground as the chassis is driven along the ground, said auger defining a pivot point about which the first and second motive devices are adapted to rotate the chassis to control the direction of ditch excavation.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: October 23, 2001
    Inventor: Todd H. Greenwood