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:
Feb. 02, 2021
Filed:
Jun. 08, 2018
Aisan Kogyo Kabushiki Kaisha, Obu, JP;
Daisaku Asanuma, Gamagori, JP;
AISAN KOGYO KABUSHIKI KAISHA, Obu, JP;
Abstract
An evaporated fuel processing device that determines whether a normal state is established, by using pressures by a pressure detector while the evaporated fuel processing device shifts between: a first state where a purge passage is opened by a first valve, air passage is opened by a second valve, the purge passage is closed by a third valve, and a pump stops; a second state, after the first state, where the purge passage is opened by the first valve, the air passage is opened by the second valve, the purge passage is closed by the third valve, and the pump is operating; and a third state which takes place after the second state and where the purge passage is opened by the first valve, the air passage is closed by the second valve, the purge passage is closed by the third valve, and the pump stops.