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1. (WO2018106861) THICKNESS MODE TRANSDUCERS AND RELATED DEVICES AND METHODS

Pub. No.:    WO/2018/106861    International Application No.:    PCT/US2017/065010
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Fri Dec 08 00:59:59 CET 2017
IPC: B06B 1/06
G01F 1/66
Applicants: SENSUS USA, INC.
Inventors: BUCKLAND, Justin Rorke
Title: THICKNESS MODE TRANSDUCERS AND RELATED DEVICES AND METHODS
Abstract:
Transducers are provided including a piezoelectric block having first and second opposing surfaces; a first non-piezoelectric layer on the first surface of the piezoelectric block, the first layer including a low density material having a first thickness; and a second non-piezoelectric layer on the second surface of the piezoelectric block, the second layer including a high density material having a second thickness, the second thickness being different from the first thickness and being at least two times the first thickness. Related devices and methods are also provided.