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:
Nov. 26, 2019
Filed:
Oct. 05, 2015
Yamabiko Corporation, Tokyo, JP;
Yamabiko Corporation, Tokyo, JP;
Abstract
The efficiency of charging air to a scavenging channel is enhanced by generating a gas flow in a piston groove simultaneously with the piston groove coming into communication with an air port. A piston grooveformed in a peripheral surface of a piston includes a pressure transmission through hole, and the pressure transmission through holeconsistently communicates with a crankcase. In the course of the piston moving up, upon a pressure in the crankcase becoming negative, the negative pressure in the crankcase affects the piston groovethrough the pressure transmission through hole. Consequently, a pressure in the piston grooveis released to the crankcase through the pressure transmission through hole. Upon the piston moving up and the piston groovebeing thereby brought into communication with the air port, air enters the piston groovethrough the air port((III) of FIG.).