Patent ID: 8585469

Claim:
An adapter for mounting a tool on an oscillating drive having a drive shaft configured to be oscillatingly driven about its longitudinal axis; said adapter comprising: a drive end facing said drive shaft; a tool end facing the tool; a central opening passing through said adapter and defining a center axis; a first receptacle arranged on said drive end and comprising at least one positive-locking element configured for positive connection with said tool; a second receptacle arranged on said tool end for effecting connection with a tool; wherein said at least one positive-locking element has a plurality of outwardly extending convex projections, each having a rounded tip arranged on a circle concentric to said center axis and being connected with neighboring projections via rounded concave lateral flanks, said at least one positive-locking element being configured for positive-locking connection with a matching positive-locking counter-element provided on said drive shaft, wherein said first receptacle on said machine end is configured as a recess; said second receptacle having a shape different from said first receptacle and having a plurality of positive-locking elements arranged isolated from each other on a circle concentric to said center axis, wherein said second receptacle on said tool end is configured as a raised portion; wherein said second receptacle provided on said tool end is configured for positive-locking connection with said tool.