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:
Apr. 10, 2018
Filed:
Oct. 02, 2015
Applicant:
Yamabiko Corporation, Tokyo, JP;
Inventors:
Assignee:
Yamabiko Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02F 3/24 (2006.01); F02B 25/14 (2006.01); F02B 75/02 (2006.01); F02B 75/16 (2006.01); F02B 25/02 (2006.01); F02F 1/22 (2006.01); F02F 7/00 (2006.01);
U.S. Cl.
CPC ...
F02F 3/24 (2013.01); F02B 25/02 (2013.01); F02B 25/14 (2013.01); F02B 75/02 (2013.01); F02B 75/16 (2013.01); F02B 2075/025 (2013.01); F02F 1/22 (2013.01); F02F 7/0004 (2013.01);
Abstract
The certainty of supplying air to a scavenging channel through a piston groove is improved. In a cylinder wall, a gas venting portis formed below and adjacent to a scavenging port. The gas venting portis independent from the scavenging port, and is opened/closed by a piston as each of an air portand the scavenging portis. Upon a piston groovebeing brought into communication with the gas venting portas a result of the piston moving up (FIG.(II)), blown-back gas in a piston groovecan move to a crankcase through the gas venting port. Along with this, air can enter the piston groovefrom the air port