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:
Jul. 22, 2003
Filed:
Oct. 15, 2001
Tsuneo Araki, Tokyo, JP;
Kioritz Corporation, Tokyo, JP;
Abstract
A two-stroke internal combustion engine is disclosed capable of reducing the number of pieces constituting the main body, thereby making it possible to reduce the number of parts such as assembling bolts and hence to reduce the manufacturing cost as well as the weight thereof while ensuring the rigidness of the main body. The main body of the engine includes a cylinder portion in which a piston is adapted to be fittingly inserted and a crankcase portion in which a crank shaft is rotatably supported via a bearing wherein the crankcase portion is constructed such that it is split into an upper and a lower crankcase portion by a horizontal plane which passes through a central axial line of the crankshaft, where the upper crankcase portion is integrated with the cylinder portion, thus forming an integral cylinder-case, and a fan case base is formed integral with the lower crankcase portion.