Patent ID: 8066013

Claim:
A hand-held electronic pedicure instrument comprising: a. a watertight instrument housing having an outside portion and an inside portion, the inside portion including a motor and a battery which is rechargeable and is charged by contactless inductive coupling from a recharging base, the battery being electrically coupled to the motor which can be activated by a switch located on the outside portion of the instrument housing, the outside portion of the instrument housing having a handle; b. the motor providing rotational output to an output shaft extending proximally from the inside portion of the instrument housing, distally through an opening in the instrument housing and beyond the outside portion of the instrument housing, the output shaft having an outer surface and a distal end, wherein the motor produces a rotational output range of 4000 to 8000 revolutions per minute; c. a wheel having a proximal surface, a distal surface and a central axis, the distal end of the output shaft being secured to the proximal surface of the wheel along the central axis of the wheel; d. an attachment having a distal portion having an abrasive material comprising pumice sponge or pumice stone and a proximal portion being removably secured to the distal surface of the wheel; and e. a depressible pin system to prevent rotation of the output shaft, the output shaft having a notch in its outer surface within the inside portion of the instrument housing, the instrument housing having a small hole substantially lined up with the notch, the depressible pin system comprising a head with a shank extending therefrom, the shank having a bottom end located opposite the head, a flange rigidly secured around the shank at a point between the head and the bottom end, wherein the shank fits through the small hole such that the flange is located within the inside portion of the instrument housing and is unable to fit though the small hole so as to effectively prevent the shank from being completely removed from the instrument housing, the bottom end of the shank being adapted to securely fit within the notch such that, when pressure is applied to the head towards the instrument housing, the bottom end of the shank fits within the notch thereby preventing the output shaft from being able to rotate, the depressible pin system further comprising a compression spring fitted around the shank between the head and the outside portion of the instrument housing.