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:
Feb. 28, 1984
Filed:
Dec. 20, 1982
Declan B Livesey, Calgary, CA;
Petre Toma, Edmonton, CA;
Texaco Canada Resources Ltd., Calgary, CA;
Abstract
A filter element which is physically capable of withstanding adverse operating conditions in a subterranean environment. The filter element comprises a durable, yet fluid pervious casing through which a particulate carrying fluid is radially passed after leaving the substrate. An annular bed within the casing, is formed of a metallic fibrous mass which defines multitudinous flow passages that retain the solid particles, yet pass the residual fluid therethrough. A fluid pervious sheath surrounds the metallic mass to form an initial particle retention phase, to maintain the fibrous mass in its desired shape, and to function as a base for accumulating retained solids.