Metal Part Coaxial With And Inside Of Glass Part Patents (Class 65/59.35)
  • Glass-coated wires and methods for the production thereof
    Patent number: 8978415
    Abstract: An apparatus for producing a glass-coated wire, the apparatus comprising at least one heating device adapted to, independently, heat a core material to a melting temperature thereof and heat a glass material to a drawing temperature thereof.
    Type: Grant
    Filed: January 4, 2009
    Date of Patent: March 17, 2015
    Assignee: WMT Wire Machine Technologies Ltd
    Inventors: Eliezer Adar, Yuri Bolotinsky
  • Method of producing a spark plug
    Patent number: 6341501
    Abstract: In a spark plug in which a space between a center electrode at the top end side and a terminal electrode at a rear end side which are arranged to be opposite to each other in an axial hole of an insulator, the glass seal is effected at a temperature within the range of 500 to 1000° C. and under a condition where the concentration of oxygen is 4-12 vol %.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: January 29, 2002
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Makoto Sugimoto, Yutaka Tanaka
  • SPARK PLUG AND PRODUCING METHOD THEREOF
    Publication number: 20010007196
    Abstract: In a spark plug in which a space between a center electrode at the top end side and a terminal electrode at a rear end side which are arranged to be opposite to each other in an axial hole of an insulator, the glass seal is effected at a temperature within the range of 500 to 1000° C. and under a condition where the concentration of oxygen is 12 vol % or less.
    Type: Application
    Filed: September 11, 1997
    Publication date: July 12, 2001
    Inventors: MAKOTO SUGIMOTO, YUTAKA TANAKA