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:
Aug. 06, 2002
Filed:
Nov. 22, 2000
Applicant:
Inventors:
Werner Geyer, Berglen, DE;
Axel Klimmek, Schwaikheim, DE;
Assignee:
Andreas Stihl AG & Co., , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02B 7/502 ;
U.S. Cl.
CPC ...
F02B 7/502 ;
Abstract
An exhaust gas control mechanism for a two-stroke engine is provided. A first housing chamber is in communication with a discharge window of the cylinder of the engine, while a second housing chamber has the exhaust gases flowing therethrough into an exhaust gas outlet. A flow communication establishes a controlled communication of flow of exhaust gas from the first chamber to the second chamber. A valve is provided for controlling the flow communication, wherein such valve, if initially open, closes upon partial opening of the discharge window and after a given period of time again opens.