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:
Oct. 21, 2003
Filed:
Aug. 22, 2001
Applicant:
Inventors:
Jürgen Häberlein, Murrhardt, DE;
Roger Ziegler, Mainhardt, DE;
Assignee:
Andreas Stihl AG & Co., , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 3/704 ;
U.S. Cl.
CPC ...
F02M 3/704 ;
Abstract
A four-stroke engine is provided and has a cylinder and a piston that delimits a combustion chamber and by means of a connecting rod drives a crankshaft disposed in a crankcase. To drive a fuel pump, the fluctuating inner pressure in the crankcase, in the valve housing or in a connecting passage that connects the two housings is utilized. For this purpose, a drive chamber of the fuel pump is connected via a pulse line with a crankcase, a valve housing or the connecting passage.