Ultrasonic waveguide
US5289436A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Oct 22, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S181/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic waveguide includes a fluid-tight thin-walled tube filled with a viscous, compressible fluid. One end of the tube is coupled to a transducer for transforming electrical energy into waves of ultrasonic energy which propagate the length of the tube. The other end of the tube has a window or refracting "shoe" for transmitting or refracting the propagating ultrasonic wave therethrough. The tube has a substantially constant cross section, preferably circular. The internal diameter of the preferred circular tube is in the millimeter regime, preferably from 0.25 to 1 mm. The wall material is preferably metal, plastic or metal/plastic composite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.