Patent ID: 9642768
Date: 2017-05-09
CPC Classifications: A46B,A61H

Claim:
1. A skin treatment device comprising: (a) drive unit comprising an output element and a rotary support element rotating about an axis of rotation, the rotary support element comprising protrusions and spring elements, the protrusions facing away from the axis of rotation, and the spring elements biasing the protrusions away from the axis of rotation, and (b) an attachment comprising a skin treatment element and a chassis for the skin treatment element, the chassis comprising a multitude of recesses to cooperate with the protrusions of the rotary support element of the drive unit, wherein the chassis is supported by the rotary support element and wherein the protrusions is brought into an engagement position with the recesses, while the chassis is supported by the rotary support element, and the protrusions is brought into a disengagement position with the recesses in reaction to outer forces above a pre-defined threshold, wherein the outer forces are tangential forces relative to the axis of rotation, while the chassis is supported and held in position by the rotary support element, wherein the chassis moves freely about the axis of rotation in the disengagement position; and wherein said multitude of recesses has a shape for receiving said protrusions.