Patents by Inventor Maurizio Matteini

Maurizio Matteini 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).

  • Method for arc-welding the blades to the disc or counterdisc of rotary machine rotors
    Patent number: 4302657
    Abstract: For welding rotor blades to a rotor disc of a rotary machine, a welding process is used wherein grooves, called blind slots, are formed through the disc wall thickness but not to the extent to pass through the entire thickness, whereafter the blades are basted by a Tungsten Inert Gas run without added welded material, the blind slots being then filled up by a series of Tungsten Inert Gas welding passes but with added weld material. Headroom limitations are offset and the weld seams come out more robust and with a better surface quality.
    Type: Grant
    Filed: June 12, 1980
    Date of Patent: November 24, 1981
    Assignee: Nuovo Pignone, S.p.A.
    Inventors: Federico Turelli, Maurizio Matteini