Cylindrical coil and cylindrical micromotor using the same

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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Details

C310S043000, C310S179000, C310S180000, C310S216002, C310S216003, C029S596000

Reexamination Certificate

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07986063

ABSTRACT:
A high-precision cylindrical coil having a high-precision fine coil pattern and a high mechanical precision such as fine roundness and no axial runout, and a cylindrical micrometer using the cylindrical coil are provided.In a cylindrical coil, a plurality of layers of coil patterns formed by filling the coil pattern grooves formed on a cylindrical substrate with a conductor and a plurality of insulating layers coating the cylindrical substrate are formed, the layers of coil patterns are electrically interconnected to each other by filling a through-hole formed by performing a hole forming process with a conductor, and the outmost layer is made of an insulating material.

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International Search Report for PCT/JP2006/310517 Dated Aug. 8, 2006

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