# US 5,349,259 A · Rotor for a printed motor

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- Number: US 5,349,259 A
- Document ID: US5349259A
- Status: Granted
- Kind: A
- Application number: 08/103,220
- Filed: 1993-08-09
- Granted: 1994-09-20
- Earliest claimed: 1992-09-29
- Assignees: Minebea Co., Ltd.
- Inventors: Toru Kaneko; Osamu Nakamura
- Web page: https://patentgrep.com/patent/US5349259A

## CPC

- H02K 3/26: consisting of printed conductors
- Y10S 310/06: Printed-circuit motors and components
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

In a rotor for a printed motor which has an armature, a hub fitted in the center of the armature and a rotating shaft supported by the hub, a cyanate resin is employed to impregnate a glass fabric forming an insulating sheet to which sheet coils are bonded together to form the armature. An insulating sheet of the same material is also interposed between the armature and the hub.

## Claims

### Claim 1

In a rotor for a printed motor comprising:
an armature formed by electrically connecting an outer end and an inner end of a sheet coil that is formed by heat-pressure bonding sheet coils having a coil pattern respectively on both sides of an insulating board including a glass fabric impregnated with an electrically insulating cyanate resin;
a hub fitted in the center of said armature;
a rotating shaft supported by said hub; and
an insulator located between said armature and said hub, said insulator including a glass fabric impregnated with cyanate resin.

### Claim 2 (depends on 1)

A rotor as set forth in claim 1, wherein said cyanate resin is modified with an epoxy resin.