The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2002
Filed:
Nov. 28, 2000
Felix E. Spokoyny, Newport Coast, CA (US);
Hera, LLC, Lake Forest, CA (US);
Abstract
A method and apparatus for cleaning the catalytically active surfaces of selective catalytic reduction (SCR) substrate, and more particularly such a method and apparatus which: simultaneously generates two differing frequency sound waves which are effective in cleaning such surfaces, more effectively than if only single waves of such frequency were generated; utilizing spaced arrays of sound emitters at the entry and exit sides of selected SCR layers, with the emitters on opposite sides of the layers being in counter phase, or opposed synchronization; teaches design and placement of sound sources which optimize a variety of output cleanability predictions, for example pulsating pressure distribution, pulsating velocity distribution (U, V, W), time-averaged parameters and measure of cleanability.