Abstract: A method for documenting operating data of a hand-held power tool using a data processing device, in particular a data logger, includes at least one communication step in which operating parameters of the hand-held power tool are retrieved via a communication unit of the data processing device, and at least one processing step, in which the operating parameters of the hand-held power tool are processed into compressed operating data by a computing unit of the data processing device in order to reduce the storage requirement. The method further includes a storage step in which the operating data of the hand-held power tool which is processed by the computing unit, in particular compressed, is stored on a storage unit of the data processing device.

Abstract: A method for network-connected tool operation with user anonymity includes generating a first cryptographic key that is stored in a memory in the power tool, generating a first encrypted serial number for the power tool based on an output of an encryption function using the first cryptographic key applied to a non-encrypted serial number for the power tool stored in the memory, and generating usage data based on data received from at least one sensor in the power tool during operation of the power tool. The method further includes transmitting the usage data in association only with the first encrypted serial number from the power tool to a maintenance system to enable usage data collection that prevents identification of the power tool as being associated with the usage data.

Abstract: A method for network-connected tool operation with user anonymity includes generating a first cryptographic key that is stored in a memory in the power tool, generating a first encrypted serial number for the power tool based on an output of an encryption function using the first cryptographic key applied to a non-encrypted serial number for the power tool stored in the memory, and generating usage data based on data received from at least one sensor in the power tool during operation of the power tool. The method further includes transmitting the usage data in association only with the first encrypted serial number from the power tool to a maintenance system to enable usage data collection that prevents identification of the power tool as being associated with the usage data.

Abstract: A method for generating at least one identifier of at least one article, in particular a power tool, includes sensing at least one usage parameter and/or at least one article parameter of the article with at least one sensing unit. The method further includes creating with at least one computing unit, in dependence on the at least one sensed usage parameter and/or the at least one sensed article parameter, a certificate of the article, and/or assigning the article to at least one person.

Abstract: Portable sander, in particular an orbital sander, having an abrasive sheet carrier (1) and having clamping means (3) for firmly clamping opposite abrasive sheet ends of an abrasive sheet (21) which can be supported on the abrasive sheet carrier (1), wherein first clamping means (3) together with an abrasive sheet end clamped thereon can be moved away from the other abrasive sheet end, clamped by means of second clamping means (3), for tensioning the abrasive sheet (21), and the first clamping means (3) have spring elasticity. Provision is made for the first clamping means (3) to come against a rigid stop element (9) with prestress in an end clamping position.

Abstract: Portable sander, in particular an orbital sander, having an abrasive sheet carrier (1) and having clamping means (3) for firmly clamping opposite abrasive sheet ends of an abrasive sheet (21) which can be supported on the abrasive sheet carrier (1), wherein first clamping means (3) together with an abrasive sheet end clamped thereon can be moved away from the other abrasive sheet end, clamped by means of second clamping means (3), for tensioning the abrasive sheet (21), and the first clamping means (3) have spring elasticity. Provision is made for the first clamping means (3) to come against a rigid stop element (9) with prestress in an end clamping position.