Patents by Inventor Rolfe W. Graham

Rolfe W. Graham 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).

  • Filament clip support
    Patent number: 5236159
    Abstract: A novel heatable filament wire support is provided embodying flexible and rigid support and current-providing bracket beams terminating in inherent resilient clip springs for accurately clamping the ends of the filament with mechanical and electrical reliability, enabling facile filament wire alignment and replacement, and accommodation for thermal displacement upon filament heating.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: August 17, 1993
    Assignee: Energy Sciences Inc.
    Inventors: Tzvi Avnery, Rolfe W. Graham
  • Method of and apparatus for generating uniform elongated electron beam with the aid of multiple filaments
    Patent number: 5126633
    Abstract: A novel electron beam apparatus and technique wherein a plurality of longitudinally extending heated filaments is employed, each similarly offset laterally of a central longitudinal axis, but with successive filaments alternately disposed on opposite sides of said axis and cooperating with a first low velocity accelerating stage comprising staggered grid slots and openings, and a high velocity second accelerating stage to provide long uniform longitudinal electron beams.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: June 30, 1992
    Assignee: Energy Sciences Inc.
    Inventors: Tzvi Avnery, Arthur W. Sommerstein, Rolfe W. Graham