Electricity: motive power systems – Automatic and/or with time-delay means – Speed or rate-of-movement
Reexamination Certificate
2005-08-23
2005-08-23
Ip, Paul (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Speed or rate-of-movement
C318S286000, C318S443000, C318S445000, C318S446000, C180S286000, C701S049000
Reexamination Certificate
active
06933694
ABSTRACT:
A control for an electric motor in a vehicle. The control ascertains whether an obstacle is interfering with rotation of the motor. The control establishes a baseline speed, representing normal free running speed of the motor. This baseline speed will be different, in different operating environments. Then the control determines whether measured motor speed drops below the baseline speed by a predetermined amount. If so, then the motor is shut down, or reversed.
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Ip Paul
Jacox Meckstroth & Jenkins
Valeo Electrical Systems, Inc.
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