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:
Jan. 26, 1993
Filed:
Feb. 19, 1992
Yoshiharu Matsushita, Ibaraki, JP;
Kazumasa Komura, Ibaraki, JP;
Kyosan Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An evapo-control valve, which is disposed in a pipe for connecting a fuel tank and a canister, comprises a fuel tank side connecting port which communicates with the fuel tank, a canister side connecting port which communicates with the canister, an intake manifold side connecting port which communicates with an intake manifold, a closing valve for permitting the canister side connecting port to communicate with the fuel tank side connecting port by the negative pressure in the intake manifold side connecting port during the operation of an engine, and a check valve for permitting the atmosphere in the canister to communicate with the fuel tank when the fuel tank is negatively pressurized due to cold weather during the stop of the engine.