发明授权
- 专利标题: Stepping motor for timepiece
- 专利标题(中): 步进电机
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申请号: US705441申请日: 1976-07-15
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公开(公告)号: US4075540A公开(公告)日: 1978-02-21
- 发明人: Akira Torisawa
- 申请人: Akira Torisawa
- 申请人地址: JA
- 专利权人: Kabushiki Kaisha Daini Seikosha
- 当前专利权人: Kabushiki Kaisha Daini Seikosha
- 当前专利权人地址: JA
- 优先权: JA50-87115 19750715; JA50-88022 19750717; JA50-881110 19750718
- 主分类号: G04C13/11
- IPC分类号: G04C13/11 ; H02K1/14 ; H02K37/12 ; H02K29/00
摘要:
A stepping motor for a timepiece comprising one-piece upper stator pair, one-piece lower stator pair, and magnetic material between said one-piece upper stator and said one-piece lower stator and circular rotor having at least two pairs of magnetic poles positioned circumferentially thereof is disposed between the stator pairs, and a driving coil is connected magnetically to said one-piece upper stator pair and to said one-piece lower stator pair. The stepping motor includes means for defining a rest position of the rotor.
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