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:
Sep. 06, 2005
Filed:
Sep. 10, 2004
Konrad Knaus, Gaildorf, DE;
Andreas Hägele, Berglen, DE;
Konrad Knaus, Gaildorf, DE;
Andreas Hägele, Berglen, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
The invention relates to a carburetor arrangement of a portable handheld work apparatus and includes a carburetor (), an accelerator pump () and a venting pump (). The venting pump () acts on the accelerator pump () via a venting line (). A check valve () is mounted in the venting line () in such a manner that its outlet end () is directed in the direction of the venting pump (). A pretensioning device () is provided which holds a valve body () of the check valve () closed below a selected difference pressure between the outflow end () and an opposite-lying inflow end (). A support device () which acts on the valve body () and is actuable, at one end, by pressure at the outflow end () without considering pressure at the other end () or by pressure on the inflow end () without considering the pressure on the other end ().