Patent ID: 6722480
Filing Date: 2004-04-20
Classification: F16F

Abstract:
A magnetically actuated motion control device, comprising:a first member defining a cavity said first member including at least one moveable finger; a second member positionable within the cavity and being movable relative to the first member along an axis when positioned therein, the second member comprising at least one pole and a magnetic field generator for generating a magnetic field, the at least one pole having a first magnetic field entering wide portion comprising a first axial dimension and a second contact surface area narrower portion having a second axial dimension, the first magnetic field entering wide portion first axial dimension being greater than the second contact surface area narrower portion second axial dimension to produce a magnetic field funneling effect wherein said magnetic field generator generates a magnetic field which enters the at least one pole through the first magnetic field entering wide portion with a pole entering magnetic field flux and exits the at least one pole through the second contact surface area narrower portion with a contact surface area magnetic field flux with the contact surface area magnetic field flux greater than the pole entering magnetic field flux and causing a portion of the first member movable finger to press against the second contact surface area portion at least one of the first member and the second member including at least one moveable finger.