Patents by Inventor James L. Nessa

James L. Nessa 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).

  • Amortisseur winding arrangement, in a rotor for electrical, rotating equipment
    Patent number: 5606211
    Abstract: Slot wedges, electrically-conductive, used in rotor slots, between rotor teeth, and overlying the rotor coils, are serially arranged in the slots and have arcuate grooves in opposite ends thereof. Inserts, also electrically-conductive, are spring-loaded in the grooves to effect electrical continuity fully therealong, lengthwise of the rotor, from wedge to wedge.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: February 25, 1997
    Assignee: Dresser-Rand Company
    Inventors: Darrell R. Morrison, James L. Nessa, James J. McClurg
  • Amortisseur winding arrangement, in a rotor for electrical, rotating equipment
    Patent number: 5550417
    Abstract: Electrically-conductive, segmental, slot wedges, with electrically-conductive inserts therebetween, and electrically-conductive interconnects, between end ones of the wedges and the annular, end retaining ring, of a rotor, define an amortisseur winding for the rotor. The inserts are spring-loaded in end slots formed in the wedges, and in an embodiment of the invention, are formed of beryllium copper and are silver-plated. As is typical of rotors in electrical, rotating equipment, the slot wedges are formed of aluminum.
    Type: Grant
    Filed: July 3, 1995
    Date of Patent: August 27, 1996
    Assignee: Dresser-Rand Company
    Inventors: Darrell R. Morrison, James L. Nessa, James J. McClurg