Patent · US Expired

Connecting piece

US6851407B2 · kind B2 · utility

1Cited by

3References

14Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Helmut Zimmermann · Winnenden, DE
Michael Joos · Fellbach, DE
Andreas Radtke · Mannheim, DE
Stefan Leuze · Winnenden, DE

Key dates

Filing date	Mar 26, 2003
Grant date	Feb 8, 2005
Priority date	—
Expiry date	Apr 30, 2023

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02B2075/025
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A connecting piece (1) is disposed between a carburetor (4) and an inlet channel (3) in an internal combustion engine of a portable handheld motor-driven work apparatus. The connecting piece functions to compensate for relative position changes between the engine and the carburetor (4), is made of elastic material and includes an expansion fold (5) for compensating for changes in position. The length of the expansion fold (5) is changeable from a collapsed to an expanded length. The expansion fold (5) subdivides the connecting piece (1) into a carburetor-end channel section (6) having a circularly-shaped cross section and an engine-end channel section (7) having a cross section departing from the circular form at the end facing toward the engine. The connecting piece (1) has a constant flow cross section over its entire length when the expansion fold (5) is collapsed.

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