Patents by Inventor George K. Yamasaki

George K. Yamasaki 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).

  • Hollow cathode discharge device with front shield
    Patent number: 4795942
    Abstract: A hollow cathode discharge device loosely supported by a cathode lead-in 26 in a glass sleeve 32, the device including a ceramic shield 42 received in the rim 38 of the glass sleeve in freely slidable relation thereto, and maintained in position by holding means such as a mica disc 48 supported from the anode structure including an anode lead-in 30.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: January 3, 1989
    Assignee: Westinghouse Electric Corp.
    Inventor: George K. Yamasaki
  • Hollow cathode lamp with improved stability alloy for the cathode
    Patent number: 4437038
    Abstract: A hollow cathode type light source is provided having improved operating stability by forming the cathode of an alloy of a highly reactive, unstable prime metal of interest for spectral emission, and of a chemically stable, readily sputtered metal. An alloy of silver and calcium with a small amount of magnesium provides a hollow cathode device which exhibits stable operation after a minimum warm-up time.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: March 13, 1984
    Assignee: Westinghouse Electric Corp.
    Inventors: Vincent F. Link, George K. Yamasaki
  • Hollow-cathode spectral light source with means to prevent high voltage arcing
    Patent number: 4071802
    Abstract: A hollow-cathode type spectral light source is provided with additional means to prevent high voltage breakdown between the anode and the outside of the cathode. The means is a resilient annular high-voltage shield member which is disposed between the conventional insulating disc and the envelope.
    Type: Grant
    Filed: May 19, 1976
    Date of Patent: January 31, 1978
    Assignee: Westinghouse Electric Corporation
    Inventor: George K. Yamasaki