Patent · US Active

Power tool

US10329994B2 · kind B2 · utility

2Cited by

31References

10Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Martin Rieber · Stuttgart, DE
Thorsten Schäffer · Pforzheim, DE
Jens Riehmann · Stuttgart, DE
Arno Kinnen · Fellbach, DE
Volker Donner · Aspach, DE

Key dates

Filing date	Dec 7, 2012
Grant date	Jun 25, 2019
Priority date	—
Expiry date	Dec 7, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M35/1017
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A power tool has an internal combustion engine with an injection valve through which fuel is supplied to the internal combustion engine; a crankcase; and a crankshaft arranged in the crankcase so as to be rotatable about an axis of rotation. A fan wheel housing is provided and a fan wheel is arranged in the fan wheel housing and conveys cooling air to the internal combustion engine. In the fan wheel housing a connecting opening is formed. The injection valve is arranged in a cooling area, wherein cooling air is supplied by the fan wheel through the connecting opening to the cooling area.

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