Selective elevator braking during emergency stop

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9227815
APP PUB NO 20130105248A1
SERIAL NO

13514637

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for controlling movement of an elevator car during an emergency stop includes the steps of determining the load of the car; determining the travel direction of the car; and monitoring the speed of the car. When the car is determined to be either lightly loaded and travelling downwards, or heavily loaded and travelling upwards, brake torque is applied only when the speed of the car reaches zero, as slowing of the car can be accomplished solely by virtue of the balancing factor of the car's counterweight.

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Patent Owner(s)

Patent OwnerAddress
INVENTIO AG6052 HERGISWIL

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Martinelli, Roger Zurich, CH 3 12
Stalder, Robert Zurich, CH 4 16

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