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:
Oct. 20, 1998
Filed:
Mar. 11, 1997
Hiroaki Muramatsu, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A construction of an intake passage for an internal combustion engine in which a length of the intake passage is automatically varied in response to a variation in the cross-sectional area of the intake passage. The intake passage is provided for supplying intake air to an intake port of the engine. A first intake pipe has a first end connected to the intake port of the internal combustion engine. A second intake pipe is movably connected to the first intake pipe. The second intake pipe has an open end protruding from a second end of the first intake pipe so as to introduce air therethrough to the first intake pipe. A cross-sectional area of the second intake pipe gradually increases toward the open end. A projection protrudes into an interior of the second intake pipe through the open end.