Patent · US Active

Transducer for non-invasive measurement

US11598663B2 · kind B2 · utility

0Cited by

3References

11Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

Christof Bernhard · Aarau, CH
Frank Kassubek · Rheinfelden (Baden), DE
Miklos Lenner · Adetswil, CH
Detlef Pape · Nussbaumen, CH

Key dates

Filing date	Mar 2, 2021
Grant date	Mar 7, 2023
Priority date	—
Expiry date	Mar 11, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01F1/662
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A transducer for non-invasive measurement includes: a shear-type piezoelectric element; and a host material. The shear-type piezoelectric element is mounted to a first face of the host material. A second face of the host material is mountable to a wall of a vessel that holds a liquid. When the second face of the host material is mounted to the wall of the vessel, the transducer when activated at an activation frequency launches a Lamb wave into the wall of the vessel. The transducer is designed such that a phase velocity of the Lamb wave in the wall of the vessel is greater than a speed of sound in the liquid held by the vessel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.