Patent · US Expired

Ultrasonic transducer system

US7147755B2 · kind B2 · utility

0Cited by

1References

6Claims

0Family size

Assignee

Ultra Technology Europe AB · SE

Inventors

Bo Nilsson · Öregrund, SE
Hakan Dahlberg · Gävle, SE

Key dates

Filing date	Nov 28, 2002
Grant date	Dec 12, 2006
Priority date	—
Expiry date	Apr 30, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/089
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The method is for treating a liquid or slurry with an ultrasonic energy. A movable endless member is provided that is permeable to a liquid. A transverse foil is disposed below the member and extends across the member and a transducer is in operative engagement with the foil. The member is moved about rollers. The transducer generates pressure pulses into the foil to form implosion bubbles in the liquid disposed above the member. The implosion bubbles have a first diameter (d1). A gap is formed between the member and the foil. The gap represents a distance (d2) that is less than the diameter (d1) of the bubbles to prevent any bubbles of critical size to be captured in the gap.

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