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:
Jul. 11, 2017
Filed:
Sep. 14, 2011
George Greenwood, Tiverton, RI (US);
Richard Pfefferle, North Smithfield, RI (US);
George Greenwood, Tiverton, RI (US);
Richard Pfefferle, North Smithfield, RI (US);
ACS Industries, Inc., Lincoln, RI (US);
Abstract
Expanded metal sheets () are used to produce tubular filters (). The expanded metal sheet () has a multiplicity of rows of openings arranged to reduce nesting when the sheet () is rolled on itself. In particular, the pitch between the rows of openings, the sizes of the openings, or both the pitch between the rows of openings and the sizes of the openings are varied to reduce nesting when the expanded metal sheet () is rolled on itself. The filters () can include external circumferential grooves (), rounded corners () produced by a point loading process, textured surfaces () between openings, and/or torturous internal paths produced by non-perforated areas of an expanded metal sheet. The expanded metal sheet () can be composed of carbon steel coated with a material having a higher heat conductivity, e.g., tin.