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:
Jun. 19, 1979
Filed:
Jul. 05, 1977
Harold T Sawyer, Pacific Palisades, CA (US);
Other;
Abstract
A continuous self-cleaning filter for liquids has an outer resonant tube concentrically mounted around an inner composite tube in spaced relationship providing an annular chamber between them. There is an inflow at one end of the annular chamber for the liquid and an outflow at the other end for residual concentrate. The inner composite tube has an outlet at one end for clear effluent and a closed opposite end. A relatively thin walled perforate liner enveloped in a filter blanket comprises the composite tube. For constantly cleaning the filter blanket a sonic sinusoidal wave inducing transducer is affixed to the exterior wall of the outer resonant tube at an antinodal point, thereby to excite the outer tube into a state of resonance, thereby to continuously transform the liquid to be filtered within the annular chamber into a state of intense vaporous cavitation energy thereby to implode the surfaces of the filter blanket material causing the contamination and build up residue to be continuously removed and returned to concentrate flow within the annular chamber.