Patent · US Active

Internal combustion engine having an elastic connecting duct

US8516989B2 · kind B2 · utility

8Cited by

10References

24Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Olaf Schmidt · Heidelberg, DE
Christoph von Hiller · Stuttgart, DE
Reinhard Friedrich · Waiblingen, DE
Michael Joos · Fellbach, DE
Jens Kern · Waiblingen, DE
Helmut Schlessmann · Waiblingen, DE

Key dates

Filing date	Sep 2, 2009
Grant date	Aug 27, 2013
Priority date	—
Expiry date	Jun 27, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2225/08
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal combustion engine of a manually operated implement, having an elastic connecting duct between the engine and an air filter for vibration-decoupled bridging of a vibration gap between engine and the air filter. The elastic connecting duct has a first conduit for fuel/air mixture and a second conduit for largely fuel-free air. The first and second conduits are separate tubes having respective bores that are separated from one another over their entire lengths, the inlet of the engine is operatively connected to the air filter via the first conduit, and an air duct window of the engine is operatively connected to the air filter via the second conduit.

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