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, 1991
Filed:
Sep. 07, 1990
Applicant:
Inventor:
Kazutoshi Takashima, Hamamatsu, JP;
Assignee:
Sanshin Kogyo Kabushiki Kaisha, Hamamatsu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02F / ;
U.S. Cl.
CPC ...
1231 / ; 123572 ;
Abstract
Two embodiments of piston constructions for two-cycle, crankcase compression, internal combustion engines wherein the piston is formed with a blow by passage so that blow by gases escaping past the piston rings will not pass across the skirt portion of the piston to deteriorate the lubricant thereon. In one embodiment, holes formed in the piston permit the blow by gases to flow into the interior of the piston and in another embodiment, the piston pin boss is formed with a relief that permits the blow by gases to exit through one of the scavenge passages.