Controlling speed of an elevator using a speed reducing switch and governor

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United States of America Patent

PATENT NO 9708157
SERIAL NO

14372412

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A system and method for controlling speed of an elevator car in an elevator system is disclosed. The elevator car may have a speed governor adapted to trip when an electrical tripping point of the speed governor is reached. The elevator system may also have a control system for controlling operation of the elevator car, the control system providing a speed reducing switch adapted to trip when a software tripping point of the speed reducing switch is reached, the software tripping point being reached before the electrical tripping point of the speed governor.

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Patent Owner(s)

Patent OwnerAddress
OTIS ELEVATOR COMPANYONE CARRIER PLACE FARMINGTON CT 06032

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blackaby, Barry G Granby, US 12 235
Della, Porta Joseph L Southington, US 3 27

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