Power tool having a disk-shaped tool, and Method for fastening or for releasing the tool

17:

• The power tool as recited in claim 16 wherein the fastening nut is loosenable or tightenable without aids solely by means of the torque impulse of the drive of the power tool.

18:

• The power tool as recited in claim 16 wherein the drive includes an electronically commutated motor.

19:

• The power tool as recited in claim 16 wherein the at least one impulse includes a plurality of successive output torque impulses.

20:

• The power tool as recited in claim 16 further comprising at least one sensor for monitoring the at least one torque impulse.

21:

• The power tool as recited in claim 16 further comprising a tool fitting for receiving the tool.

22:

• The power tool as recited in claim 16 further comprising operator-control elements set up to initiate release or tightening of the tool using the fastening nut.

23:

• The power tool as recited in claim 20 further comprising electronics for evaluating data determined by the at least one sensor for evaluating inputs input via the operator-control elements.

24:

• The power tool as recited in claim 23 further comprising at least one sensor is arranged between the motor and the electronics.

25:

• The power tool as recited in claim 16 further comprising electronics for controlling the motor and a power supply of the motor.

26:

• The power tool as recited in claim 25 further comprising at least one sensor is arranged between the motor and the electronics.

27:

• The power tool as recited in claim 16 further comprising electrical connections for connecting operator-control elements, electronics, at least one sensor and the motor.

28:

• The power tool as recited in claim in claim 16 wherein sensor-less feedback of the motor is used to detect a change of angle in the motor.

30:

• The method as recited in claim 29 wherein the torque impulse is output using a sensor.

32:

• The method as recited in claim 31 wherein the torque impulse is output using a sensor.

33:

• A method comprising:
• using a torque impulse generatable by a drive of a power tool to tighten or loosen a fastening nut for fastening a disk-shaped tool to a power tool.