High power ultrasonic transducer with broadband frequency characteristics at all overtones and harmonics
US7019439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Jun 20, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0618
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A transducer assembly for receiving a stimulating signal and producing ultrasound therefrom at one or more frequencies, over an ultrabroad bandwidth at each frequency, includes a front mass disposed about a central axis, and a back mass disposed about the central axis, laterally offset from the front mass. The transducer assembly also includes one or more resonators disposed about the central axis and between the front mass and the back mass, including at least one electrical contact for receiving the stimulating signal. The back mass consists of a low-density material, such as aluminum, aluminum alloy, magnesium, or magnesium alloy, or any of various low-density materials known in the art. In general, the back mass is characterized by a density of less than 6.0 g/cc. In one embodiment, the front mass and the back mass are made from different materials, and the front mass includes a deviation from symmetrical symmetry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.