Patents by Inventor Daniel N. Butler

Daniel N. Butler 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).

  • Articulated vehicle
    Patent number: 5873431
    Abstract: An articulated vehicle comprising a first vehicle portion attached to a second vehicle portion by a joint assembly. The joint assembly preferably comprises a bearing assembly that is pivotally attached to the first vehicle portion such that the bearing assembly can pivot relative to the first vehicle portion about a substantially horizontal axis that is substantially transverse to the longitudinal axis of the vehicle. The bearing assembly is also preferably pivotally attached to the second vehicle portion such that the bearing assembly can pivot relative to the second vehicle portion about a substantially vertical axis. The bearing assembly is preferably constructed to enable the first vehicle portion to rotate about the longitudinal axis relative to the second vehicle portion.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: February 23, 1999
    Assignee: Joy MM Delaware, Inc.
    Inventors: Daniel N. Butler, George A. Fischer, Randall W. Welker