Patents by Inventor David F. Bradley

David F. Bradley 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).

  • Gas tight sealant for zirconia sensors
    Patent number: 4310402
    Abstract: In a high temperature gas measuring device consisting of a zirconia oxide solid electrolyte cell bonded to a support member, a sealant exhibiting a thermal coefficient of expansion comparable to zirconia and a melting point in excess of 1000.degree. C. is used to seal the cell to the support member. The preferred sealants which meet these requirements include:(1) 3 MgO.sup.. Al.sub.2 O.sub.3.sup.. 6 SiO.sub.2(2) 52% Nd.sub.4 (SiO.sub.4).sub.3, 48% Ca.sub.2 SiO.sub.4(3) 57% La.sub.4 (SiO.sub.4).sub.3, 43% Ca.sub.2 SiO.sub.4(4) 50% Y.sub.4 (SiO.sub.4).sub.3, 50% Ca.sub.2 SiO.sub.4(5) (a) La.sub.2 O.sub.3.sup.. Al.sub.2 O.sub.3 : 50 mol % of each (b) 40% La.sub.2 O.sub.3.sup.. 60% Al.sub.2 O.sub.3.
    Type: Grant
    Filed: November 5, 1980
    Date of Patent: January 12, 1982
    Assignee: Westinghouse Electric Corp.
    Inventors: Arnold O. Isenberg, David F. Bradley