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:
Sep. 08, 2015
Filed:
Dec. 12, 2011
Ken Shirai, Tokyo, JP;
Takahiro Yamazaki, Akishima, JP;
Naoki Koga, Higashimurayama, JP;
Kazumichi Yamaguchi, Hamura, JP;
Ken Shirai, Tokyo, JP;
Takahiro Yamazaki, Akishima, JP;
Naoki Koga, Higashimurayama, JP;
Kazumichi Yamaguchi, Hamura, JP;
Yamabiko Corporation, Ohme-shi, Tokyo, JP;
Abstract
An engine includes a cylinder block, and a piston slidably mounted in a cylinder, with the cylinder block being formed with an exhaust passage leading to a combustion chamber through an exhaust port, a first scavenging port opened to an inner circumferential surface of the cylinder, a first communication passage formed from the first scavenging port in a radial direction of the cylinder, and a first scavenging passage formed with an opening on a bottom surface of the first communication passage, in which a side surface on a far side from the exhaust port forming the communication passage is formed towards the far side from the exhaust port in the combustion chamber, and the opening portion of the first scavenging passage and a landing portion formed in the periphery of the opening portion are formed at a bottom portion of the communication passage.