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:
Nov. 05, 2013
Filed:
Apr. 23, 2009
Applicants:
Peter P. Guzman, Marcellus, NY (US);
John R. Reason, Liverpool, NY (US);
Nader S. Awwad, Baldwinsville, NY (US);
John T. Steele, Marcellus, NY (US);
Inventors:
Peter P. Guzman, Marcellus, NY (US);
John R. Reason, Liverpool, NY (US);
Nader S. Awwad, Baldwinsville, NY (US);
John T. Steele, Marcellus, NY (US);
Assignee:
Carrier Corporation, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sensor that is designed for determining ambient pressure for purposes of derating an internal combustion engine at high altitudes, is used to determine the condition of the air filter by taking pressure measurements in the intake manifold before and after the engine is started, with the difference then being an indication of the condition of the air filter.