Portable, electric work apparatus

US9041320B2 · kind B2 · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Arne Untermann · Winnenden, DE
• Markus Maier · Graz, AT
• Ante Hamersmit · Waiblingen, DE
• Christian Renz · Biberach, DE
• Johannes Menzel · Oberhausen, DE
• Ina Schneider · Stuttgart, DE
• Jochen Luz · Waiblingen, DE
• Jens Kloeker · Winnenden, DE
• Harald Mang · Winnenden, DE
• David Hampe · Stuttgart, DE
• David Kraetzig · Ludwigsburg, DE

Key dates

• Filing date: Jul 8, 2013
• Grant date: May 26, 2015
• Expiry date: Dec 11, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/16
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The invention relates to a portable work apparatus having a housing and a work tool which is driven by an electric motor via a gear assembly. A flywheel which rotates about a rotational axis is arranged in the drive train between the electric motor and the gear assembly, which flywheel is connected fixedly to an output shaft so as to rotate with it, which output shaft protrudes into a gear assembly space and has a drive pinion. The output, shaft and the flywheel are mounted in the housing by two bearing locations, the rotational axis of the flywheel and a motor shaft of the electric motor lying coaxially with respect to one another, and the motor shaft of the electric motor being connected fixedly to the flywheel so as to rotate with it. The electric motor is fixed in the housing exclusively via a torque support.