Patents by Inventor Gary Spiegelberg

Gary Spiegelberg 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).

  • Power supply for SMAW welding and stud welding
    Patent number: 4241285
    Abstract: An electronically controlled power supply is adaptable upon throwing a single mode changing switch for shielded metal arc welding (SMAW) and stud welding. The power transformer and control circuitry of a stick welding power supply are, according to the invention, adapted with facility for higher power output, relative to that required for stick welding, for a relatively short timed duration suitable for stud welding. Safety shut down features improve safe use of the power supply, particularly during stud welding, and protect against transformer overload.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: December 23, 1980
    Assignee: Erico Products, Inc.
    Inventors: Kenneth A. Golonka, Sr., Gary Spiegelberg