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:
May. 29, 2001
Filed:
Sep. 24, 1999
Zhili G. Liu, Madison, WI (US);
Tadeusz Jaroszczyk, Stoughton, WI (US);
Jerald J. Moy, Stoughton, WI (US);
Nelson Industries, Inc., Stoughton, WI (US);
Abstract
A corrugated axial filter (,) has a plurality of flow channels (,) extending axially from the upstream dirty frontside (,) of the filter to the downstream clean backside (,) of the filter. Each channel has an upstream opening (,) at the upstream dirty frontside and has top and bottom walls (,and,) and right and left sidewalls (,and,) extending from the opening rearwardly toward the downstream clean backside. The right and left sidewalls taper towards each other as they extend rearwardly to define a triangular shaped flow channel. Right and left sidewalls of adjacent flow channels are a single continuous sheet of filter material (,) in a zig-zag pattern (,) with a plurality of fold lines including a first set of fold lines (,) at the upstream dirty frontside and a second set of fold lines (,) at the downstream clean backside.