Patents Examined by Lilybett Martin
  • Mandrel supported tensile test to evaluate weld bonding
    Patent number: 6557421
    Abstract: A tensile test apparatus and method for testing a circumferential weld on a tubular member wherein the tube region of the weld is completely supported by a mandrel and the tubular specimen is gripped on both sides of the weld along the specimen's longitudinal length with a very small separation distance between the tensile test grips. If there are any non-bonded defects in the weld, they are captured by the weld fracture surface as mesa or void features with an orientation different from that of a well bonded region.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: May 6, 2003
    Assignee: Westinghouse Electric Company LLC
    Inventors: Anand M. Garde, Gerald D. Boyer, John F. Kraus, Peter M. Hess
  • Integrated two-channel torque sensor
    Patent number: 6341534
    Abstract: A torque sensor having an array of four saturable core magnetic flux detectors arranged in two pairs. Each pair of flux detectors is associated with a pair of magnetoelastic bands. A triangle signal is applied to one end of each pair of flux detectors and an offset correction voltage is applied to the opposite ends. Two amplifiers are associated with each pair of torque detectors and are responsive to the second harmonic of detected flux signals. The signal conditioning electronics provide automatic offset and drift correction.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: January 29, 2002
    Assignee: Ford Motor Company
    Inventor: John Edward Dombrowski