Abstract: A dermabrasion hand tool for abrasively removing a skin surface by means of an abrasive stream projected onto the skin surface to be removed. The hand tool includes an elongated manipulative body having a longitudinal axis and first and second opposite ends. The hand tool also includes an operative head through which the abrasive stream is projected onto the skin surface to be removed and through which the removed skin surface and used abrasive stream are evacuated, the operative head being removably mounted onto the first end of the manipulative body. The hand tool further includes a supply channel for supplying,the abrasive stream to the operative head from a supply stream source, and an evacuating channel for evacuating the removed skin surface and used abrasive stream from the operative head to an evacuating means, both of said channels extending within and along the manipulative body and each having first and second extremities located respectively at the first and second ends of the manipulative body.

Abstract: A clamping device for controlling rotation of a chair about a support shaft of a base frame and the chair associated thereto. The clamping device includes a mounting block, clamping components, and calibrating components. The mounting block is securely affixed to a bottom portion of the chair and has first and second channels transversely connected to one another inside the mounting block. The mounting block is pivotably mountable onto a portion of the support shaft and is allowed to rotate thereabout. This portion is insertable into the first channel of the mounting block. The clamping components are mounted into the second channel of the mounting block and are operatively connected to the support shaft for clamping the same. The calibrating components are operatively connected to the clamping components for adjusting the extent with which the clamping components clamp the support shaft. The present clamping device provides a wide range of adjustable positions without any backlash.

Abstract: A dermabrasion hand tool for abrasively removing a skin surface by means of an abrasive stream projected onto the skin surface to be removed. The hand tool includes an elongated manipulative body having a longitudinal axis and first and second opposite ends. The hand tool also includes an operative head through which the abrasive stream is projected onto the skin surface to be removed and through which the removed skin surface and used abrasive stream are evacuated, the operative head being removably mounted onto the first end of the manipulative body. The hand tool further includes a supply channel for supplying the abrasive stream to the operative head from a supply stream source, and an evacuating channel for evacuating the removed skin surface and used abrasive stream from the operative head to an evacuating means, both of said channels extending within and along the manipulative body and each having first and second extremities located respectively at the first and second ends of the manipulative body.