Patent ID: 7918862

Claim:
An electric-powered skin treatment device comprising: a) a housing formed of at least two rigid elements joined along a gasketed seam and comprising an elongate handle portion b) a water-resistant switch assembly and c) a head region coupled to the housing and having disposed thereon at least one surface useful for skin treatment, the surface arranged and configured to deliver relative motion to the skin, wherein the water-resistant switch assembly comprises (1) a first translatable element disposed on a substantially planar mount formed in one of the at least two rigid elements of the housing, and the substantially planar mount has an aperture, a rotatable shaft extending through the aperture having mounted thereon an exterior gear that is engageable with the first translatable element, and a seal lining the aperture to restrict water movement along the shaft and into an interior of the housing and (2) a second translatable element disposed in the interior of the housing and engageable with an interior gear mounted on the rotatable shaft, the first translatable element capable of linear movement along a first axis and the second translatable element capable of linear movement along a second axis, substantially parallel the first axis, and wherein the linear movement of the first translatable element is transferred to rotational movement of the rotatable shaft via the exterior gear and the rotational movement of the rotatable shaft is transferred to the linear movement of the second translatable element via the interior gear.