Patents Assigned to David M. Letsche
  • Welding light
    Patent number: 4303967
    Abstract: This light is designed for use in the welding industry, for checking joint preparations, by lighting the area to be welded, lighting the area of a weld, so as to enable the user effectively to clean or chip slag from it, etc. It consists primarily of a sleeve, in which a high voltage bulb is received, that includes a resistor across the leads, and it is mounted to any electrode holder, by a ball and socket swivel, for changing the light angle.
    Type: Grant
    Filed: March 21, 1980
    Date of Patent: December 1, 1981
    Assignee: David M. Letsche
    Inventor: David M. Letsche