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:
Jun. 09, 1998
Filed:
Nov. 22, 1995
Daniel Mieczkowski, Kenosha, WI (US);
Mark J Hasenberg, Kenosha, WI (US);
Thomas P Becker, Kenosha, WI (US);
Matthew M Crass, Kenosha, WI (US);
Robert D Braun, Kenosha, WI (US);
Edward T Gisske, Mount Horeb, WI (US);
Donald J Caldwell, Milwaukee, WI (US);
Snap-on Technologies, Inc., Lincolnshire, IL (US);
Abstract
An evaporative emission tester is used to evaluate the integrity of a vehicle's evaporative emission control system, including determining the system's purge capability. The emission tester performs a purge flow test to determine whether fuel vapor stored in the vehicle's evaporative canister and present in the fuel tank is being drawn into the engine for combustion at a minimum amount. The emission tester also performs a pressure test of the vehicle's evaporative canister purge system, which includes the fuel tank and lines. The emission tester can function as a stand-alone unit or as an integrated product with a host computer.