Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes threaded rider mating with support screw in...
Reexamination Certificate
2006-03-28
2006-03-28
Matecki, Kathy (Department: 3654)
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes threaded rider mating with support screw in...
C187S391000, C187S392000, C187S393000, C187S401000
Reexamination Certificate
active
07017714
ABSTRACT:
There is provided a double-deck elevator which does not cause any impacts or vibrations on each cage when adjusting the spacing in the vertical direction between upper and lower cages. Loads on an upper support beam from right and left support arms for hoisting and supporting the upper cage are measured by right and left upper measuring units. Similarly, loads on a lower support beam from right and left support arms for hoisting and supporting the lower cage are measured by right and left lower measuring units. Because the magnitude of the loads on the right and left screw shafts can be obtained correctly, any impacts or vibrations caused on each cage can be prevented when adjusting the spacing in the vertical direction by correctly controlling the drive torque output from right and left drive motors.
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Fujita Yoshiaki
Kondo Naoki
Matecki Kathy
Pico Eric E.
Toshiba Elevator Kabushiki Kaisha
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