Patents by Inventor Antonio Mari

Antonio Mari 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).

  • Torch for continuous-wire electric welding machines, gas- or water-cooled
    Patent number: 5349158
    Abstract: The torch body terminates with a stepped, outwardly-decreasing cross section which, beginning from the innermost portion, comprises a collar (2) of polygonal or equivalent shape and, thereafter, a cylindrical portion of round cross section (3) and a threaded end portion (4) having screwed thereon the gas-diffusing nozzle (9), which is provided, preferably, with unscrewing-preventing means (10--10') and which firmly mounts a bush (12) of rigid plastics or other suitable material for protection of said nozzle and of a portion of the wire-guiding spout (11) which is screwed on said nozzle.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: September 20, 1994
    Inventor: Antonio Mari