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. 01, 2015
Filed:
May. 30, 2006
Applicants:
Ronald C. Johansson, Stillwater, MN (US);
Vivek Bharti, Cottage Grove, MN (US);
Inventors:
Ronald C. Johansson, Stillwater, MN (US);
Vivek Bharti, Cottage Grove, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 46/00 (2006.01); B01D 46/44 (2006.01);
U.S. Cl.
CPC ...
B01D 46/0086 (2013.01); B01D 46/444 (2013.01);
Abstract
A filter life sensor assembly within an air handling system is disclosed. The air handling system includes an air flow intake, an air flow exit, and a filter disposed between the air flow intake and air flow exit. The filter sensor assembly comprises a bypass connecting the air flow intake to the air flow exit, a dielectric sensor adjacent the bypass, wherein the dielectric sensor generates an electrical signal in response the air flow passing through the bypass.