Robert Boschgmbh

Daniel Vesenmaier

Heiko Roehm

Jorge Guajardo Merchan

Xinxin Fan

Andreas Heber

Carsten Prause

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.

System and method for privacy-preserving data retrieval for connected power tools

Portable sander, in particular an orbital sander, having an abrasive sheet carrier () and having clamping means () for firmly clamping opposite abrasive sheet ends of an abrasive sheet () which can be supported on the abrasive sheet carrier (), wherein first clamping means () 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 (), for tensioning the abrasive sheet (), and the first clamping means () have spring elasticity. Provision is made for the first clamping means () to come against a rigid stop element () with prestress in an end clamping position.

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Leinfelden, Germany

Daniel Vesenmaier