Magnet structure

A magnet structure, comprising:

• a frame, including first and second opposing frame ends and a plurality of spacers separating the first and second frame ends;
• a first permanent magnet assembly, attached to the first frame end, including a first magnet enclosure, a first permanent magnet insert, and a first pole, having a first pole face and disposed on an end of the first magnet enclosure;
• and
• a second permanent magnet assembly, attached to the second frame end, including a second magnet enclosure, a second permanent magnet insert, and a second pole, having a second pole face and disposed on an end of the second magnet enclosure;
• wherein each of the first and second frame ends is shaped substantially like a cross;
• and
• wherein the spacers connect corresponding ends of the cross shapes of the first and second frame ends.

A magnet structure, comprising:

• a frame, including first and second opposing frame ends and a plurality of spacers separating the first and second frame ends;
• a first permanent magnet assembly, attached to the first frame end, including a first magnet enclosure, a first permanent magnet insert, and a first pole, having a first pole face and disposed on an end of the first magnet enclosure;
• and
• a second permanent magnet assembly, attached to the second frame end, including a second magnet enclosure, a second permanent magnet insert, and a second pole, having a second pole face and disposed on an end of the second magnet enclosure;
• wherein the first and second magnet enclosures each include an open end, a closed end, and a sidewall, defining an inside space in which the respective permanent magnet insert is disposed;
• wherein the first and second magnet enclosures are each attached to the respective frame end such that the open end is in direct communication with the respective frame end, and the respective pole is attached to the closed end;
• and
• wherein each said inside space has a plan view that is shaped substantially like a rectangle.

A magnet structure, comprising:

• a frame, including first and second opposing frame ends and a plurality of spacers scraping the first and second frame ends;
• a first permanent magnet assembly, attached to the first frame end, including a first magnet enclosure, a first permanent magnet insert, and a first pole, having a first pole face and disposed on an end of the first magnet enclosure;
• and
• a second permanent magnet assembly, attached to the second frame end, including a second magnet enclosure, a second permanent magnet insert, and a second pole, having a second pole face and disposed on an end of the second magnet enclosure;
• wherein the first and second magnet enclosures each include an open end, a closed end, and a sidewall, defining an inside space in which the respective permanent magnet insert is disposed;
• wherein the first and second magnet enclosures are each attached to the respective frame end such that the open end is in the direct communication with the respective frame end, and the respective pole is attached to the closed end;
• and
• wherein the first and second magnet enclosures are made substantially of iron.

A magnet structure, comprising:

• a frame, including first and second opposing frame ends and a plurality of spacers separating the first and second frame ends;
• a first permanent magnet assembly, attached to the first frame end, including a first magnet enclosure, a first permanent magnet insert, and a first pole, having a first pole face and disposed on an end of the first magnet enclosure;
• and
• a second permanent magnet assembly, attached to the second frame end, including a second magnet enclosure, a second permanent magnet insert, and a second pole, having a second pole face and disposed on an end of the second magnet enclosure;
• wherein each of the first and second magnet enclosures includes a retainer, and a support attaching the retainer to the respective frame end, such that the respective permanent magnet insert is held between a first side of the retainer and the respective frame end, and the respective pole is connected to a second side of the retainer;
• and
• wherein each said support is made of a non-magnetic material.

A magnet structure, comprising:

• a frame, including first and second opposing frame ends and a plurality of spacers separating the first and second frame ends;
• a first permanent magnet assembly, attached to the first frame end, including a first magnet enclosure, a first permanent magnet insert, and a first pole, having a first pole face and disposed on an end of the first magnet enclosure;
• and
• a second permanent magnet assembly, attached to the second frame end, including a second magnet enclosure, a second permanent magnet insert, and a second pole, having a second pole face and disposed on an end of the second magnet enclosure;
• wherein each of the first and second magnet enclosures includes a retainer, and a support attaching the retainers to the respective frame end, such that the respective permanent magnet insert is held between a first side of the retainer and the respective frame end, and the respective pole is connected to a second side of the retainer;
• and
• wherein each said retainer is made substantially of iron;
• and
• wherein each said retainer includes a first face disposed in contact with the respective permanent magnet insert, and a second face disposed in contact with the respective pole.

A magnet structure, comprising:

• a frame, including first and second opposing frame ends and a plurality of spacers separating the first and second frame ends;
• a first permanent magnet assembly, attached to the first frame end, including a first magnet enclosure, a first permanent magnet insert, and a first pole, having a first pole face and disposed on an end of the first magnet enclosure;
• and
• a second permanent magnet assembly, attached to the second frame end, including a second magnet enclosure, a second permanent magnet insert, and a second pole, having a second pole face and disposed on an end of the second magnet enclosure;
• wherein the first and second frame ends are made substantially of iron;
• and
• wherein the plurality of spacers are made of a magnetic material.