Patent ID: 6731029
Filing Date: 2004-05-04
Classification: H02K

Abstract:
A canned linear motor including: field system yokes, having different polarities from each other, in which a plurality of permanent magnets are juxtaposed adjacent to each other; an armature disposed so as to be opposed to said permanent magnet row with a magnetic gap secured therebetween and having an armature winding; in which said armature is provided with a winding fixing frame having said armature winding mounted on both surfaces thereof along the lengthwise direction of said armature; a can that accommodates said armature winding and said winding fixing frame and has a coolant passage for causing a coolant to flow to the surrounding of both the members; and a header having a coolant supply port attached at one of both ends of said can and having a coolant discharge port attached at the other end thereof; and in which any one of said field system yokes and said armature are made into a stator, and the other of which is made into a mover, and said field system yokes and said armature are caused to run relative to each other; wherein a plurality of slits are provided in said can, a leak preventing sheet is adhered to the inside of said can so as to cover said slits; and at the same time, resin is filled in said slits.