Patents by Inventor Stephen M. Crane

Stephen M. Crane 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).

  • Robot with articulated arm
    Patent number: 4693663
    Abstract: A hybrid robot (10) for industrial applications comprises an articulated arm assembly (12) pivoted to a turntable assembly (14) mounted for rotation on a base assembly (16). The arm assembly (12) includes an upper arm (26) pivoted to a lower arm (30). A tool adaptor (52) is connected to the upper arm (26) by a wrist assembly (54). A pantograph linkage interconnects the wrist assembly (54), upper arm (26), and lower arm (30) so that the tool adaptor is normally maintained in constant orientation during movement of the arm assembly (12), subject to overriding control by actuators (122, 124). Pivotal movement of the arm assembly (12) is controlled by independent actuators (118, 120) which can be selectively coupled to the arms (26, 30) at different combinations of predetermined points (38, 40, 44, 46, 48) to facilitate adjustment of the work envelope.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: September 15, 1987
    Assignee: Donaldson Company, Inc.
    Inventors: David L. Brenholt, Stephen M. Crane, Paul M. Fischer, Kenneth V. Mattson