Abstract: A dressing device for profiling and sharpening a grinding tool includes a rotatable sharpening tool and a rotatable profiling tool axially offset from and settable relative to the rotatable sharpening tool. In one embodiment, the rotatable sharpening tool and the rotatable profiling tool have a common rotational axis, and the tools are settable along the common rotational axis. In another embodiment, a profiling tool axis of rotation is parallel to a sharpening tool axis of rotation. A method for dressing a grinding tool is also disclosed. The method includes profiling and sharpening the grinding tool with a single dressing device having a rotatable profiling tool with a first feed rate and a first advancement rate, and a rotatable sharpening tool with a second feed rate and a second advancement rate. The two feed rates or the two advancement rates are different.

Abstract: The invention relates to a two-wheeled bicycle stand having at least one foot (6) comprising at least one recess (9), said at least one recess forming at least one cavity upon contact between said foot (6) and a surface, characterized in that in at least one of said cavities a vacuum can be built up and released, and characterized in that the release of the vacuum and/or the build-up of the vacuum necessitates a verification. Such a bicycle stand can be fastened to a bicycle, resulting in improved stability and protection against theft.