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US 8,896,240 B2Granted
Multifunctional electric tool
AssigneeChervon (HK) Limited
InventorsYoujun Dai, Xiangdong Wang
Life of this patent
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Abstract
A multifunctional electric tool has a housing, a motor arranged in the housing, a transmission device driven by the motor, a speed controlling device. At least two output shafts which have different dimensions are to be used with the tool wherein the output shaft is used to control the activation of the speed controlling device. The rotational speed of the electric tool may thus be automatically adjusted to match with the rotational speed of the accessory installed on the output shaft.
Claims10
A multifunctional electric tool, comprising:
- a housing;
- a motor arranged in the housing;
- a transmission device driven by the motor;
- a speed control device;
- and
- at least two replaceable output shafts having different axial dimensions connected to the transmission device,
- wherein the speed control device comprises a switch having different output levels corresponding to the different axial dimensions of the output shafts, and
- wherein the speed control device is controlled and activated in response to the different axial dimensions of the output shafts.
5 more elements
Dependencies are inferred from the claim text.