Patent ID: 8292305

Claim:
An adjustable magnetism shelter of a cutter holder comprising: a stationary collar having a disk having a center; and a top surface; a first hole defined in the top surface at the center of the disk; multiple sliding recesses defined radially in and defined the top surface of the disk and around the first hole; a sliding assembly having multiple sliding bars separately mounted slidably in the sliding recesses and having a second end; and a magnetism bar having a reflection surface having a wave shape and disposed opposite to a corresponding sliding bar; a moving shaft mounted on and protruding from the second end of the sliding bar; and a cap covering and mounted on the stationary collar and having a top board having a bottom surface; a top hole defined through the top board, aligned with the first hole of the stationary collar; multiple arc grooves separately defined in and defined around the bottom surface of the top board and each arc groove having an inner end of the arc groove being near the first hole; and an outer end of the arc groove being far away from the first hole and inserted by one of the moving shafts of the sliding assembly.