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. 22, 2001
Filed:
Jul. 23, 1999
Reinhard Gerhardy, Korb, DE;
Andreas Stihl AG & Co., , DE;
Abstract
A diaphragm carburetor for an internal combustion engine has a carburetor housing having an intake channel with a venturi section. A plate valve is positioned in the intake channel. A fuel outlet valve is mounted in the venturi section. A fuel-filled control chamber is provided and delimited at one side by a diaphragm. A fuel supply channel is connected to the control chamber. A supply valve is mounted in the fuel supply channel and actuated by the diaphragm. A first fuel channel connects the control chamber and the fuel outlet valve. At least one fixed main throttle is mounted in the first fuel channel for fixedly determining a fuel flow cross-section to the fuel outlet valve. A lever is provided for actuating the valve plate. An adjustable stop cooperates with the lever. The flow cross-section of the intake air is adjusted by the stop to a desired air/fuel ratio and is changeable, in a limited range, in a direction of increasing the flow cross-section.