Patent ID: 8294308
Filing Date: 2012-10-23
Classification: A47D,H02K,Y10T

Abstract:
1. A magnetic drive, comprising: an electrically conductive coil defining a bore and having first and second oppositely disposed ends; a magnetic member movable from a first position outside said bore and adjacent said first end of said coil, through said bore, to a second position outside said bore and adjacent said second end of said coil; a control operable to selectively provide current to said electrically conductive coil and to reverse a direction of the current provided to said electrically conductive coil; and a sensor adapted to sense a position of said magnetic member relative to said electrically conductive coil and to generate a signal related to said sensed position; said control selectively providing current to said electrically conductive coil, or reversing a direction of the current provided to said coil in response to said signal.