Patent ID: 8576033

Claim:
An electromagnet comprising: a monolithically formed magnetically susceptible pole piece having a channel structure and a first flange member, the channel structure having an annular inner side wall, an annular outer side wall and an annular end wall that fixedly couples the inner and outer side walls to one another on a first axial end of the pole piece, the channel structure being open on a second axial end of the pole piece that is opposite the first axial end, the first flange member being coupled to an end of one of the inner and outer side walls on the second axial end, the first flange member having a first proximal end, which is directly coupled to the end of the one of the inner and outer side walls, and an opposite, first distal end that extends past the one of the inner and outer side walls in a radial direction such that the first flange member extends radially from the channel structure; and a coil assembly fixedly coupled to the channel structure between the inner and outer side walls; wherein the pole piece includes a second flange member, the second flange member having a second proximal end, which is directly coupled to an end of the other one of the inner and outer side walls on the second axial end, and an opposite, second distal end that extends past the other one of the inner and outer side walls in a radial direction such that the second flange member extends radially away from the channel structure.