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:
Mar. 02, 2021
Filed:
Sep. 14, 2015
Aisan Kogyo Kabushiki Kaisha, Obu, JP;
Shinji Murai, Obu, JP;
AISAN KOGYO KABUSHIKI KAISHA, Obu, JP;
Abstract
An evaporated fuel treatment device is provided with an electric-operated valve, a positive-pressure relief valve mechanism and a negative-pressure relief valve mechanism. The electric-operated valve has a valve body for opening/closing a vapor passage allowing a fuel tank and a canister, and adjusts the flow rate by electrical control. The positive-pressure relief valve mechanism opens when the pressure at the fuel tank side has a value greater than or equal to a predetermined positive pressure value. The negative-pressure relief valve mechanism opens when the pressure at the fuel tank side has a value less than or equal to a predetermined negative pressure value. The electric-operated valve is configured such that the valve body is moved in the valve opening direction by the pressure at the fuel tank side that is higher, by a predetermined value, than the valve opening pressure for the positive-pressure relief valve mechanism.