Invention Application
- Patent Title: Asymmetric drive motor for a barrier operator or the like
- Patent Title (中): 用于屏障操作者的不对称驱动电机等
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Application No.: US10894136Application Date: 2004-07-19
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Publication No.: US20050029974A1Publication Date: 2005-02-10
- Inventor: James Fitzgibbon , Edward Laird
- Applicant: James Fitzgibbon , Edward Laird
- Assignee: The Chamberlain Group, Inc.
- Current Assignee: The Chamberlain Group, Inc.
- Main IPC: H02P1/44
- IPC: H02P1/44 ; H02P25/04 ; H02P25/24 ; H02P1/00
Abstract:
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 of speed. The drive power is controlled by electrically changing the capacitance value for a permanent split capacitor motor.
Public/Granted literature
- US2099996A Teapot Public/Granted day:1937-11-23
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