Patents by Inventor Tobi D. Crigger

Tobi D. Crigger 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).

  • Multi-purpose machine chassis
    Patent number: 9296436
    Abstract: A chassis for a roof bolter includes a first plate positioned on a first side of the chassis and having a first mating surface, a second plate positioned opposite and substantially parallel to the first plate on a second side of the chassis and having a second mating surface substantially parallel to the first mating surface, and a plurality of openings positioned on the first plate and the second plate for receiving one or more fasteners, including wheel attachment openings for coupling the wheel assembly to at least one of the first plate or the second plate when the roof bolter is in a wheel configuration, and crawler attachment openings for coupling the crawler assembly to at least one of the first plate or the second plate when the roof bolter is in a crawler configuration.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: March 29, 2016
    Assignee: Caterpillar Global Mining America LLC
    Inventors: James W. Coe, Jr., Tobi D. Crigger
  • MULTI-PURPOSE MACHINE CHASSIS
    Publication number: 20150060158
    Abstract: A chassis for a roof bolter includes a first plate positioned on a first side of the chassis and having a first mating surface, a second plate positioned opposite and substantially parallel to the first plate on a second side of the chassis and having a second mating surface substantially parallel to the first mating surface, and a plurality of openings positioned on the first plate and the second plate for receiving one or more fasteners, including wheel attachment openings for coupling the wheel assembly to at least one of the first plate or the second plate when the roof bolter is in a wheel configuration, and crawler attachment openings for coupling the crawler assembly to at least one of the first plate or the second plate when the roof bolter is in a crawler configuration.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 5, 2015
    Applicant: Caterpillar Global Mining America LLC
    Inventors: James W. Coe,, JR., Tobi D. Crigger