Patents Assigned to JOHNSON TATTHEY PUBLIC LIMITED COMPANY
  • MANUFACTURING SHAPE MEMORY ALLOY TUBES BY DRAWING
    Publication number: 20100282370
    Abstract: Shape Memory Alloy tube is protected from damage during drawing, caused by galling-type interaction between the tube and high-carbon dies, by forming an oxide surface layer. This invention protects the tube internal diameter from oxidation while allowing the tube outside diameter to be oxidised, by using an oxygen getter located within the tube during the oxidation step. The method yields a higher quality internal diameter and improves productivity.
    Type: Application
    Filed: September 26, 2008
    Publication date: November 11, 2010
    Applicant: JOHNSON TATTHEY PUBLIC LIMITED COMPANY
    Inventors: Edwin Alfred Crombie, III, William Andrew Hochella