Patent · US Active

Hand-held power tool

US8573323B2 · kind B2 · utility

21Cited by

13References

17Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Matthias Müller · Kirchheim unter Teck, DE
Heiko Roβkamp · Adelberg, DE
Gernot Liebhard · Waiblingen, DE
Michael Renz · València, ES

Key dates

Filing date	Mar 29, 2011
Grant date	Nov 5, 2013
Priority date	—
Expiry date	Feb 21, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25F5/02
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A hand-held power tool has a tool member and a motor drivingly connected to the tool member, wherein the motor is arranged in a motor housing. A battery for driving the tool member is provided. A guide shaft has arranged on its first end the battery and on its second end the motor housing and the tool member. A rotatably power output part arranged on the motor housing is drivingly connected to the motor. The power output part supports the tool member. Cooling air is sucked through the guide shaft into the motor housing. Between the power output part and the motor housing an annular air exit gap is formed through which the cooling air exits the motor housing. At least one guide vane that projects into the annular air exit gap is provided.

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