Patents by Inventor Giuseppe Tommasini

Giuseppe Tommasini 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).

  • Diamond wire equipped with improved cutting bushes for cutting stone material
    Patent number: 6915794
    Abstract: A diamond wire (1) is disclosed for cutting stone material comprising a support cable (2) with around it a plurality of cutting bushes (3) and a plurality of elastic means (5). The cuttting bushes (3) comprise: an hollow cylindric support (10); at least one diamond cutting sector (12) connected to an external surface of the support (10); and at least one non-diamond support/cutting sector (14) connected to the external surface of the support (10) and laterally connected to the cutting sector (12).
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: July 12, 2005
    Assignee: Diasint Italy S.r.l.
    Inventor: Giuseppe Tommasini
  • Diamond wire equipped with improved cutting bushes for cutting stone material
    Publication number: 20030140915
    Abstract: A diamond wire (1) is disclosed for cutting stone material comprising a support cable (2) with around it a plurality of cutting bushes (3) and a plurality of elastic means (5). The cuttting bushes (3) comprise: an hollow cylindric support (10); at least one diamond cutting sector (12) connected to an external surface of the support (10); and at least one non-diamond support/cutting sector (14) connected to the external surface of the support (10) and laterally connected to the cutting sector (12).
    Type: Application
    Filed: January 2, 2003
    Publication date: July 31, 2003
    Inventor: Giuseppe Tommasini
  • Process for sintering silicon nitride compacts
    Patent number: 4354990
    Abstract: Sintered silicon nitride articles are prepared by sintering a silicon nitride compact of a density of at least 1.3 g/cm.sup.3 in nitrogen gas atmosphere at substantially atmospheric pressure, while the compact is embedded in a protective powder comprising silicon nitride, boron nitride, or a mixture of silicon nitride and boron nitride, and one or more sinterization additives for silicon nitride, said additives being present in the protective powder in an amount of from 3 to 20% by weight.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: October 19, 1982
    Assignee: Fiat Societa per Azioni
    Inventors: Pier C. Martinengo, Angelo Giachello, Giuseppe Tommasini, Paul Popper
  • Process for sintering reaction bonded silicon nitride
    Patent number: 4351787
    Abstract: Sintered silicon nitride articles are prepared from a silicon nitride compact by forming a silicon powder containing one or more sintering additives for silicon nitride into a compact having at density of at least 1.3 g/cm.sup.3, said additives being present in the powder in an amount such as to ensure an additive content of from 0.5 to 20 wt. % in the silicon nitride compact, nitriding the silicon compact by heating under nitrogen gas blanket at a temperature not exceeding 1500.degree. C., to convert said silicon into reaction bonded silicon nitride, and sintering the reaction bonded silicon nitride compact by heating in a nitrogen gas atmosphere at a temperature of at least 1500.degree. C.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: September 28, 1982
    Assignee: Fiat Societa per Azioni
    Inventors: PierCarlo Martinengo, Angelo Giachello, Giuseppe Tommasini, Paul Popper