Patents by Inventor Andrew T.W. BARROW

Andrew T.W. BARROW 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).

  • Alloy steel
    Patent number: 9217186
    Abstract: The invention provides an alloy steel having the following composition: Ni 5-14 wt %; Cr 4-16 wt %; Co 7-14 wt %; Mo 1-5 wt %; W 0-5 wt %; Ti 0-0.8 wt %; Al 0.1-3 wt %; the balance being Fe save for incidental impurities. This provides an ultra-high strength corrosion resistant steel with good toughness, which does not significantly creep at temperatures up to 450° C. The high quantity of alloying to elements, particularly chromium, also gives the alloy good corrosion resistance. The alloy is particularly suitable for main shafts of gas turbine engines.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: December 22, 2015
    Assignee: ROLLS-ROYCE PLC
    Inventors: Andrew T W Barrow, Harshad K D H Bhadeshia, Martin J. Rawson, Paul O Hill
  • ALLOY STEEL
    Publication number: 20120080124
    Abstract: The invention provides an alloy steel having the following composition: Ni 5-14 wt %; Cr 4-16 wt %; Co 7-14 wt %; Mo 1-5 wt %; W 0-5 wt %; Ti 0-0.8 wt %; Al 0.1-3 wt %; the balance being Fe save for incidental impurities. This provides an ultra-high strength corrosion resistant steel with good toughness, which does not significantly creep at temperatures up to 450° C. The high quantity of alloying to elements, particularly chromium, also gives the alloy good corrosion resistance. The alloy is particularly suitable for main shafts of gas turbine engines.
    Type: Application
    Filed: September 14, 2011
    Publication date: April 5, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Andrew T.W. BARROW, Harshad K.D.H. BHADESHIA, Martin J. RAWSON, Paul O. HILL