Handheld Work Apparatus with Switchable Power
First Claim
1. A handheld work apparatus comprising:
- a motor configured to drive an exchangeable work tool;
a control unit configured to control the operation of said motor;
said control unit being configured to operate said motor in a first operating mode (I) having at least one of a reduced rotational speed (n0) and reduced power (P0) and in a second operating mode (II) having at least one of an increased rotational speed (n1) and an increased power (P1);
a detecting unit connected to said control unit and having a read unit configured to read an identifier of said work tool mounted on said work apparatus;
said detecting unit being configured to evaluate the identifier and form a release signal in dependence upon the evaluation of said identifier; and
,said control unit being configured to set one of said operating mode I and said operating mode II in dependence upon said release signal.
1 Assignment
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Accused Products
Abstract
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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Citations
12 Claims
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1. A handheld work apparatus comprising:
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a motor configured to drive an exchangeable work tool; a control unit configured to control the operation of said motor; said control unit being configured to operate said motor in a first operating mode (I) having at least one of a reduced rotational speed (n0) and reduced power (P0) and in a second operating mode (II) having at least one of an increased rotational speed (n1) and an increased power (P1); a detecting unit connected to said control unit and having a read unit configured to read an identifier of said work tool mounted on said work apparatus; said detecting unit being configured to evaluate the identifier and form a release signal in dependence upon the evaluation of said identifier; and
,said control unit being configured to set one of said operating mode I and said operating mode II in dependence upon said release signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification