Patent · US Expired

Method for producing an ultrasonic transducer

US6574842B2 · kind B2 · utility

2Cited by

5References

9Claims

0Family size

Assignee

STN Atlas Elecktronic GmbH · DE

Inventors

Alex Brenner · Bremen, DE
Rainer Busch · Aachen, DE

Key dates

Filing date	Jan 17, 2002
Grant date	Jun 10, 2003
Priority date	—
Expiry date	Jan 17, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49169
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for producing an ultrasound transducer having piezoelectric or electrostrictive ceramic elements (11) embedded in plastic, with reduced production costs. The ceramic elements (11) are ceramic rods (20) provided with a plastic jacket (21) of a constant thickness, and the jacketed ceramic rods (20) are organized, while standing upright, in a container (31) that is open on one side and is vibrated. The container (31), with the jacketed ceramic rods (20) is filled with a plastic, such as resin or PU. After hardening, the resulting composite body (12) is removed from the container (31), and its top side and/or underside (121, 122) is ground down until the ceramic rods (20) possess a length stipulated by the necessary transducer frequency. Electrodes contacting all or only groups of the ceramic rods (20) are subsequently mounted to the topside and underside (121, 122) of the composite body.

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