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. 12, 2011
Filed:
Jun. 29, 2007
Brian L. Fall, East Haddam, CT (US);
Thomas J. Hamlin, Vernon, CT (US);
Mahesh Z. Patel, Pantsville, CT (US);
John L. Pulek, Cheshire, CT (US);
Aaron Spearin, Willimantic, CT (US);
Brian L. Fall, East Haddam, CT (US);
Thomas J. Hamlin, Vernon, CT (US);
Mahesh Z. Patel, Pantsville, CT (US);
John L. Pulek, Cheshire, CT (US);
Aaron Spearin, Willimantic, CT (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A filter assembly is provided which includes an outer filter sleeve formed at least in part by a plurality of pleats, an inner filter sleeve formed at least in part by a plurality of pleats, wherein the inner and outer filter sleeves define a passage therebetween. An inlet cap is secured to a first end of the inner and outer filter sleeves and it has at least one inlet port communicating with the passage, and an end cap is secured to a second end of the inner and outer filter sleeves and it has an end surface closing the passage. Methods of forming such a filter assembly are also provided.