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:
Apr. 16, 2013
Filed:
Feb. 25, 2011
Douglas C. Sundet, Hudson, WI (US);
Dean R. Duffy, Woodbury, MN (US);
Donald E. Young, Forest Lake, MN (US);
Lowell E. Christensen, Lake Elmo, MN (US);
Douglas C. Sundet, Hudson, WI (US);
Dean R. Duffy, Woodbury, MN (US);
Donald E. Young, Forest Lake, MN (US);
Lowell E. Christensen, Lake Elmo, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The present invention is a filter that includes a length of filter media and a continuous, substantially nonlinear adhesive strand. The filter media has a front face and a rear face. The filter media has a plurality of pleats defined by a plurality of fold lines, each fold line being intermediate oppositely sloping first and second wall surfaces. The plurality of fold lines comprise a first plurality of pleat tips and a second plurality of pleat valleys. The adhesive strand is provided on the front face of the filter media in discontinuous contact with the filter media. The adhesive strand contacts the filter media at a pleat tip and contacts the filter media at a portion of a first wall surface and contacts the filter media at a portion of a second wall surface.