Title:
SAFETY DEVICE FOR ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2007/129408
Kind Code:
A1
Abstract:
An elevator has a car movable vertically in a hoistway, a main rope for suspending
the car, and a hoist including a drive sheave over which the main rope is passed
and vertically moving the car by rotation of the drive sheave. A safety device
for the elevator has a hoist brake device for braking rotation of the drive sheave
to apply braking force to the main rope, an auxiliary brake rope as a separate body
from the main rope, an auxiliary brake pulley provided at the upper part of the
hoistway and over which the auxiliary brake rope is passed, and an auxiliary brake
device for applying braking force to the auxiliary brake rope. The car receives
braking force from the main and auxiliary brake ropes by operation of the hoist
brake device and the auxiliary brake device, respectively, and is braked by the
braking force that the car receives.
Inventors:
MITSUI ATSUSHI (JP)
Application Number:
PCT/JP2006/309393
Publication Date:
November 15, 2007
Filing Date:
May 10, 2006
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MITSUI ATSUSHI (JP)
MITSUI ATSUSHI (JP)
International Classes:
B66B5/16; B66B7/06
Domestic Patent References:
| WO2002072461A1 | 2002-09-19 |
Foreign References:
| JP2006027784A | 2006-02-02 | |||
| JPS5974875A | 1984-04-27 | |||
| JP2001010774A | 2001-01-16 | |||
| JPS55145984A | 1980-11-13 |
Other References:
See also references of EP 2017213A4
None
None
Attorney, Agent or Firm:
SOGA, Michiteru et al. (8th FloorKokusai Building,1-1, Marunouchi 3-chom, Chiyoda-ku Tokyo 05, JP)
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