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:
May. 12, 1992
Filed:
Feb. 20, 1991
Applicant:
Inventor:
Huei-Huay Huang, Hsinchu, TW;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123 / ; 123 / ;
Abstract
An auxiliary exhausting device for improving the scavenging efficiency and the combustion efficiency of a two-stroke engine is provided. The auxiliary exhausting device includes an inner rotating member and an outer rotating member both having an opening communicable with an auxiliary exhausting port, two timing wheels respectively fixed to the inner and outer members with the one, which is fixed to the inner member, driven by the crankshaft, a positive driving device rotating the outer member, and a controller responsive to the operating condition of the engine for so controlling the positive driving device that the outer member is always desiredly rotated.