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. 26, 1995
Filed:
May. 18, 1994
Juhani Isaksson, Karhula, FI;
Reijo J Kuivalainen, San Diego, CA (US);
A. Ahlstrom Corporation, Noormarkku, FI;
Abstract
Filtering apparatus for filtering particles from high temperature (e.g. greater than 500 degrees C., and at a pressure of about 2-40 bar) gases includes a hollow upright vessel with at least one generally torodial shaped hollow clean gas chamber mounted within it. The gas chamber has a gas impervious peripheral wall with at least one ceramic or sintered metal filter mounted in an opening in the wall. Dirty gas flows through the filter(s) into the clean gas chamber, and then passes through a conduit to be ultimately discharged from the vessel. The torodial shaped chamber may be circular or polygonal (e.g. square) in plan, and circular or polygonal in cross-section; for example it can be constructed solely of flat plates.