Elevator – industrial lift truck – or stationary lift for vehicle – With call registration means – Shared by plural load supports
Reexamination Certificate
2011-03-15
2011-03-15
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With call registration means
Shared by plural load supports
C187S278000
Reexamination Certificate
active
07905329
ABSTRACT:
An earthquake control operating system for an elevator is provided so that the elevator can operate free of the influence of earthquakes. Data concerning zones without resonance between the intrinsic vibration frequency of the ropes of the elevator and the intrinsic vibration frequency of the building, and data corresponding to the speed at which vibrations of ropes of the elevator are in a safe range during a long-period seismic wave are stored in a database. When an emergency earthquake report is received by an emergency earthquake information receiver, the elevator car is driven to a floor free of resonance at the speed stored in database. Then, when it is judged that the long-period seismic wave has been sufficiently attenuated on the basis of a detection signal of a long-period vibration sensor, the operation of the elevator is restored.
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Carlson & Gaskey & Olds PC
Otis Elevator Company
Salata Jonathan
LandOfFree
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