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Linear motor

  • US 5,808,381 A
  • Filed: 08/08/1995
  • Issued: 09/15/1998
  • Est. Priority Date: 08/09/1994
  • Status: Expired due to Term
First Claim
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1. A linear motor comprising:

  • a plurality of permanent magnet members defining a magnetic gap on one side thereof;

    a polyphase coil disposed in said magnetic gap, one of said polyphase coil and said permanent magnet members being caused to move relative to the other when said polyphase coil is energized; and

    a coil-supporting member to which said polyphase coil is fixed, said coil-supporting member being made of a non-magnetic, heat conducting and electrically insulating ceramic selected from the group consisting of aluminum nitride and a composite sintered ceramic comprising 50-97 weight % of aluminum nitride and 3-50 weight % of boron nitride.

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