Patent ID: 7997586

Claim:
An oscillatory drive comprising: an output shaft that can be driven rotatingly oscillatingly about its longitudinal axis and that comprises a free end; a holding fixture located at said free end of said output shaft and comprising a contact surface for attachment of a tool; a mounting section provided on said holding fixture being raised relative to said contact surface; a plurality of projections located on said mounting section projecting radially outwardly and being configured for form-locking connection with a mounting opening of said tool placed in contact with said contact surface; and a tension element comprising a spring exerting a biasing force on a securement holding said tool with its mounting opening on said holding fixture; wherein said tool is held on said mounting section to resiliently yield in axial direction under the action of a torque, against said biasing force; and wherein said mounting section permits said tool to rotate by a certain angle of rotation when said tool gives way axially.