Patents by Inventor Richard F. Dondero

Richard F. Dondero 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: 4590578
    Abstract: Machine operations are performed by a robot at a plurality of locations on a workpiece based on off-line data. The off-line data is corrected based on two levels of workpiece/robot alignment. First the robot determines the orientation of a fixture to which the workpiece is mounted by "touching-off" on known reference points (touchblocks) on the fixture. Coordinate data for the location of local features on the workpiece is corrected based on the first level of alignment and the positions of the local features are then sensed to provide a coordinate transformation for subsequent application to nominal machine operation location coordinates. The local features may be preassembly rivets and provide for individualized robot response on a workpiece-by-workpiece basis.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: May 20, 1986
    Assignee: United Technologies Corporation
    Inventors: John J. Barto, Jr., Peter M. Walsh, Peter R. Fitzpatrick, Richard F. Dondero, Kenneth P. Demers, Stephen M. Gardner
  • Patent number: 4156307
    Abstract: An improved process for fabricating a sealing flange assembly useful for oval and other noncircular access ports in high vacuum equipment is disclosed. The process is applicable to sealing flange assemblies of the type which include relatively hard metallic flange members having opposed, mating surfaces at least a portion of which are chamfered to define a V-shaped notch therebetween and a relatively soft metallic sealing member disposed in the notch under compression against the chamfered surfaces. The process relates specifically to the machining of the chamfered sealing surfaces by a milling process which utilizes a specially ground end mill and selected depths of cut to provide a more or less grooved sealing surface profile essentially devoid of tool chatter marks and metal folds which represent nonsealable surface defects. The as-milled chamfered sealing surfaces are much coarser (32.mu. inch finish) than those produced by grinding (8.mu.
    Type: Grant
    Filed: March 8, 1978
    Date of Patent: May 29, 1979
    Assignee: United Technologies Corporation
    Inventors: Alan F. Haught, David J. McFarlin, Richard F. Dondero