Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes control for power source of drive-means
Reexamination Certificate
2007-09-04
2007-09-04
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes control for power source of drive-means
C187S281000
Reexamination Certificate
active
11298710
ABSTRACT:
Method and system of controlling a counterweightless elevator system provided with an elevator car and a variable speed drive with an electric motor. The elevator car load is weighed, and the elevator system is controlled in order to reduce the physical/electrical dimensions of the system. The total mass of the elevator is defined by the equation Mtotal=Mcar (mass of the car)+A*Maxpayload, wherein Mcar is the mass of the car, A is a coefficient and Maxpayload is the maximal payload. If the payload supercedes A*Maxpayload the elevator is controlled so that the speed and/or acceleration of the motor is reduced, and/or the idle time of the elevator is increased.
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Birch & Stewart Kolasch & Birch, LLP
Kone Corporation
Salata Jonathan
LandOfFree
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