Patent ID: 7950334
Filing Date: 2011-05-31
Classification: B60L,C08K,C08L,H01F,H02K

Abstract:
1. A ground coil device for a magnetic levitation railway affixed to a side wall of a concrete track, comprising: a coil conductor covered with a thermoplastic resin molding material having (A) 100 parts by mass of a thermoplastic resin, (B) from 20 to 200 parts by mass of an inorganic filler, and (C) from 0 to 25 parts by mass of an elastomer; and a metal bush embedded in the ground coil device at a position corresponding to a fitting bolt for mounting the ground coil device to the side wall of the concrete track, wherein the ground coil device has a boss-shaped portion corresponding to the fitting bolt for mounting the ground coil device to the side wall of the concrete track, and 8 or more ribs each having a thickness of from 1.5 to 10 mm at a tip end thereof and a height of 30 mm or more that are connected to the boss-shaped portion.