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US 5,289,902 AGranted
Elevator
AssigneeKabushiki Kaisha Toshiba
InventorYoshiaki Fujita
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AssigneeKabushiki Kaisha Toshiba
InventorYoshiaki Fujita
Estimating the term…
An elevator having a cage disposed inside guide rails, a damper unit, a vibration sensor, and a control circuit. The damper unit is controlled by the control circuit in response to vibrations of the cage which are detected by the vibration sensor. The vibration sensor detects the vibration of the cage, converts the vibration into an electric signal, and transmits the electric signal to the control circuit. The control circuit compares the electric signal with a predetermined value and controls the coefficient of viscous damping of the damper unit according to the result of the comparison. Accordingly, vibrations of the cage are absorbed and reduced, and the elevator provides a more comfortable ride.
An elevator having a vertically movable cage along guide rails comprising:
An elevator having a vertically movable cage along guide rails comprising:
An elevator having a vertically movable cage comprising:
An elevator having a vertically movable cage comprising:
An elevator having a vertically movable cage comprising:
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
Buffer-stops for cars, cages, or skips: mounted on cars or counterweights
Including active attenuation system for shocks, vibrations: with rollers, shoes
Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes: rollers
Elevators
Term ended 26 Oct 2012 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
This invention relates to an elevator which has a rising and falling cage connected by a cable of a traction machine. In particular, this invention relates to an elevator having control mechanisms for controlling the vibration of the cage.
2. Background
FIG. 1 is a front view illustrating a first embodiment of the invention.
FIG. 2 is an enlarged sectional view illustrating a detailed part of the first embodiment of the invention.
FIG. 3 is a block schematic diagram illustrating the first embodiment of the invention.
A first embodiment of the invention will be described in detail with reference to FIGS. 1-5. In this embodiment, elements similar to the prior art are given similar reference numerals.
Referring to FIGS. 1 through 3, a rising and falling path 2 is formed vertically in a high-rise building 1, and each of guide rails 3 is disposed vertically parallel along the rising and falling path 2 through a plurality of brackets 4.
A cage 5 is disposed inside guide rails 3 and rises and falls by a main cable 6 connected to a traction machine (not shown). The cage 5 consists of cage frame 5a and cage room 5b, and vibration-proof materials 7a and 7b are disposed between cage frame 5a and cage room 5b.