×

Electromagnetic acoustic transducer for bolt tension and load measurement

  • US 5,499,540 A
  • Filed: 02/15/1994
  • Issued: 03/19/1996
  • Est. Priority Date: 02/15/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for measuring a load on a part, the device comprising:

  • means for engaging the part, said engaging means having an interior space, the interior space of the engaging means being located between the engaging means and the part;

    drive means for transmitting a load to the part through said engaging means, said drive means being detachably engagable with said engaging means;

    a coil located in the interior space near the part for introducing an eddy current in the part;

    means for providing current to said coin;

    a magnet engaging the coil in the interior space and being attached to said drive means for providing a magnetic field, the magnet and the coil generating a noncontact ultrasonic signal in the part; and

    detection means for detecting a change in the ultrasonic signal provided to the part.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×