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.

Date of Patent:
Feb. 02, 1993

Filed:

Jun. 10, 1991
Applicant:
Inventors:

John A Aubel, Chandler, AZ (US);

Jeffrey E Devall, South Bend, IN (US);

David R Gimby, Livonia, MI (US);

Philip A Shipp, Rochester, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
141 59 ; 141 44 ; 141312 ; 141369 ; 141372 ; 123518 ; 137589 ; 137 43 ; 137 39 ; 220748 ; 220 861 ;
Abstract

The invention incorporates a high flow, pilot actuated pressure relief/rollover valve into a refueling vapor recovery system having a vapor vent line for recirculating vapor past the aspirator of a refueling nozzle and a nozzle seal for engaging a refueling nozzle in an airtight manner. All vapor of evaporative hydrocarbons created during the act of refueling are routed directly to an onboard storage canister.


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