Patent · US Expired

Diaphragm carburetor for an internal combustion engine of a hand-held working tool

US6065739A · kind A · utility

3Cited by

9References

11Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Jorg Schlossarczyk · Winnenden, DE
Reinhard Gerhardy · Bad Marienberg, DE

Key dates

Filing date	Jul 15, 1998
Grant date	May 23, 2000
Priority date	—
Expiry date	Jul 15, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S261/68
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A diaphragm carburetor for an internal combustion engine of a portable hand-held working tool has a housing with a control chamber. A suction channel extends through the housing and has a venturi section. An inlet valve is connected to the control chamber and supplies the control chamber with fuel. A main valve channel connects the control chamber to the venturi section of the suction channel. A check valve is positioned in the main valve channel adjacent to the control chamber and closes the main valve channel toward the control chamber. The main valve channel has a straight and elongate portion extending from the check valve into the venturi section and projecting into the suction channel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.