Patent ID: 9620271
Date: 2017-04-11
CPC Classifications: H01F,H02K

Claim:
1. An actuator comprising: an electrically conductive coil defining a longitudinal axis (L) and having a plurality of winding turns; a magnet arranged in spaced radial relationship to said coil relative to said longitudinal axis (L); said coil having a coil side facing away from said magnet; a first conducting element having a mid region at least partially overlapping said coil side; said magnet having a side facing away from said winding turns of said coil; a second conducting element having a mid region at least partially overlapping said magnet on said side thereof; said first conducting element extending beyond said coil in axial direction with reference to said longitudinal axis (L) whereat said first conducting element has respective collar-like projections; said second conducting element extending beyond said magnet in axial direction with reference to said longitudinal axis (L) whereat said second conducting element has respective collar-like projections; said coil having first and second winding turns regions; said first winding turns region having a greater number of winding turns than said second winding turns region; said first winding turns region having a first cross section and said second winding turns region having a second cross section greater than said first cross section; and, said first winding turns region being operated at a frequency less than said second winding turns region.