Handheld work apparatus with switchable power

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9010454
APP PUB NO 20120138322A1
SERIAL NO

13312713

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The invention relates to a portable, handheld work apparatus such as a trimmer, a cut-off machine, a chain saw or the like, having a motor (5, 33) to drive a rotating, exchangeable work tool (13). A control unit (15) serves to control the operation of the motor (5, 33). The control unit (15) determines the rotational speed (n) and/or the power (P) of the motor (5, 33). According to the invention, the motor (5, 33) can be operated in a first operating mode (I) with reduced rotational speed (n0) and/or power (P0) and in at least a second operating mode (II) with an increased rotational speed (n1) and/or power (P1). In dependence on a release signal, the control uses exclusively the first operating mode (I) for a limited operation and the second operating mode (II) for an expanded operation.

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First Claim

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Patent Owner(s)

  • ANDREAS STIHL AG & CO. KG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gegg, Tim Remseck, DE 7 50
Neubauer, Andreas Ludwigsburg, DE 10 63

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