Please download the dossier by clicking on the dossier button x
×

Self calibrating linear position sensor

  • US 6,190,319 B1
  • Filed: 06/21/1999
  • Issued: 02/20/2001
  • Est. Priority Date: 06/21/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus comprising:

  • a tubular housing;

    a rotor disposed coaxially in said housing and spaced radially inwardly therefrom to define a gap therebetween for receiving a fluid, and including a target at one end thereof;

    an ultrasonic transducer mounted at a first end of said housing in alignment with said target for bouncing ultrasonic pulses thereoff for measuring linear position thereof based on the speed of sound in said fluid and the round trip pulse time between said transducer and target; and

    means for calibrating said speed of sound in said fluid from a predetermined calibration dimension between said transducer and target.

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