Patents by Inventor John E. Griffith

John E. Griffith 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: 4788021
    Abstract: A method of fabricating a clamp cushion for use with a clamp device for mounting and restraining wires. Uncured resilient material is extruded through an extrusion die to form an extrusion having a raised upper surface on one side and, on the other side, a passageway being defined by longitudinal side walls and cover flaps to accommodate the clamp device. A toothed surface is then pressed into the raised surface of the extrusion to form a plurality of longitudinally spaced transverse nodes.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: November 29, 1988
    Inventor: John E. Griffiths
  • Patent number: 4362977
    Abstract: A method and apparatus for calibrating a robot and using the results of this calibration to compensate for inaccuracies of the robot and also to diagnose robot deterioration. The method includes moving the robot to a set of nominal positions, commanded by the robot controller or measured by position encoders built into the robot, and determining the associated actual positions by measuring the robot position with an independent accurate measuring means or by aligning the robot end effector with an accurate calibration mask. The calibration results are stored and subsequently used to compensate for robot inaccuracy so that the robot moves to the actual desired positions.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: December 7, 1982
    Assignee: International Business Machines Corporation
    Inventors: Roger C. Evans, John E. Griffith, David D. Grossman, Myron M. Kutcher, Peter M. Will
  • Patent number: 3953013
    Abstract: A quasi-liquid vise is provided for clamping irregularly shaped workpieces which comprises an open-topped vessel into which a workpiece may be inserted, a particulate fluidizable material located within and, substantially filling said vessel, pressure means connected to said vessel for introducing a gas or fluid therein to fluidize said particulate material, and means for applying a vacuum to said vessel and the particulate material to substantially solidify said particulate material when it is desired to clamp a workpiece therein. The solidifying effect of said vacuum applied to said particulate material may be enhanced by utilizing alternate layers of different sized particulate material wherein smaller particles fill voids and enhance the vacuum effect and hence the rigidity of the particulate material when it is desired to solidify same.
    Type: Grant
    Filed: December 31, 1974
    Date of Patent: April 27, 1976
    Assignee: International Business Machines Corporation
    Inventors: John E. Griffith, David D. Grossman, Peter M. Will