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:
Dec. 12, 1989
Filed:
Feb. 29, 1988
Applicant:
Inventor:
S Raghuma Reddy, W. Bloomfield, MI (US);
Assignee:
General Motor Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
141 45 ; 123518 ; 220 / ; 220 / ;
Abstract
An improved evaporative emission control system uses a charcoal canister, but, rather than air purging the canister of stored vapors, desorbs them, substantially without air, by application of a vaccum and reabsorbs the purged vapors into the liquid fuel in the tank. Any effect on driveability and exhaust emissions is thereby avoided, and canister capacity and efficiency are increased.