×

Ultrasonic tire testing apparatus

  • US 4,327,579 A
  • Filed: 03/09/1981
  • Issued: 05/04/1982
  • Est. Priority Date: 08/29/1979
  • Status: Expired due to Term
First Claim
Patent Images

1. In an ultrasonic vehicle testing device of the type in which a tire casing to be tested is mounted for rotation about a central axis between an array of ultrasonic transmitting transducers and an array of ultrasonic receiving transducers, the transducers in said array of transmitting transducers being positioned to direct a beam of ultrasonic energy waves to discrete bands along the tread width of said tire casing and where said receiving transducers in said array of receiving transducers are located to receive ultrasonic energy waves traversing through said discrete bands, a method of reducing the interference between ultrasonic energy waves from adjacent transmitting transducers, comprising the steps of:

  • (a) pointing said ultrasonic transmitting transducers associated with adjacent bands across the tread width in different directions, displaced along the circumferential direction of said tire casing; and

    (b) locating said ultrasonic receiving transducers associated with adjacent zones at spaced apart locations along the circumferential direction of said tire casing corresponding to the direction in which said ultrasonic transmitting transducers are pointed.

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