发明名称 |
Asymmetric drive motor for a barrier operator or the like |
摘要 |
An asymmetrical drive motor and apparatus with the asymmetric drive motor driving a barrier. The asymmetric drive motor drives the barrier at different drive powers according to direction, time of travel, safety requirements or speed. The drive power is controlled by electrically changing the capacitance value for a permanent split capacitor motor.
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申请公布号 |
US2003178957(A1) |
申请公布日期 |
2003.09.25 |
申请号 |
US20030373524 |
申请日期 |
2003.02.24 |
申请人 |
THE CHAMBERLAIN GROUP, INC. |
发明人 |
FITZGIBBON JAMES J.;LAIRD EDWARD T.;WILLMOTT COLIN |
分类号 |
H02P1/44;H02P25/04;H02P25/24;(IPC1-7):H02P3/00 |
主分类号 |
H02P1/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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