| CPC A47B 88/457 (2017.01) [H02K 7/003 (2013.01)] | 18 Claims |

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1. A drive adapter for tool-free mounting of a drive element on a rail element of a guide system comprising:
a drive carrier; and
a holding section,
wherein the drive carrier comprises:
a mounting means for a drive element,
wherein the holding section comprises:
two support surfaces, and
a holding ridge which connects the support surfaces at least in sections and defines a distance between the support surfaces,
wherein the two support surfaces are:
each convexly curved,
face away from one another, and
configured such that they can be clamped between two rolling element running surfaces of the rail element which face one another.
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