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. 14, 1993
Filed:
Oct. 09, 1992
Tamiyoshi Ohashi, Inazawa, JP;
Masami Mizuno, Inazawa, JP;
Sukehiro Sawada, Inazawa, JP;
Hisao Hanabusa, Inazawa, JP;
Masayuki Nakagawa, Inazawa, JP;
Tomohide Aoki, Inazawa, JP;
Takaaki Ito, Mishima, JP;
Yoshihiko Hyodo, Susono, JP;
Nobutaka Morimitu, Toyota, JP;
Takashi Ohta, Nagoya, JP;
Norio Sato, Nagoya, JP;
Akane Okada, Obu, JP;
Toyoda Gosei Co., Ltd., Nishikasugai, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi, JP;
Abstract
An evaporation loss control device provided with a polymer chamber filled with polymer absorbent, a charcoal chamber filled with charcoal, introduction and purging pipes for connecting the polymer chamber with a fuel tank and an engine intake passage, respectively, an air pipe for ventilation connected to the charcoal chamber, and a vapor passage, which has various forms. For example, the vapor passage may be formed in spiral to encircle the polymer chamber, or provided between the polymer and charcoal chambers, thus allowing the evaporated fuel to pass therethrough. The vapor passage is constructed to prevent the evaporated fuel trapped by the polymer absorbent from flowing into the charcoal chamber, and also to prevent the liquid fuel from being absorbed by the charcoal.