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:
Oct. 02, 2007
Filed:
Nov. 09, 2005
David Dodge Nelson, Jr., North Chelmsford, MA (US);
Scott Christopher Herndon, Littleton, MA (US);
John Barry Mcmanus, Arlington, MA (US);
Mark Stuart Zahniser, Lexington, MA (US);
Charles Eugene Kolb, Bedford, MA (US);
David Dodge Nelson, Jr., North Chelmsford, MA (US);
Scott Christopher Herndon, Littleton, MA (US);
John Barry McManus, Arlington, MA (US);
Mark Stuart Zahniser, Lexington, MA (US);
Charles Eugene Kolb, Bedford, MA (US);
Aerodyne Research Inc., Billerica, MA (US);
Abstract
A non-contact, extractive sampling system and method is provided for measuring the exhaust gas composition and fine particle composition of exhaust emissions of various types of vehicles under actual operating conditions. A portion (or sample) of an exhaust plume of a vehicle is pulled or extracted through an extraction sampling tube, via a vacuum pump, to a remote trace gas detection system where the concentration of one or more constituents present in the sample of exhaust plume may be measured. In this regard, the invention enables vehicle emissions measurements to be made at a location remote from roadway, rather than using known, 'cross-path' remote emissions sensing systems.