Title:
SAFETY DEVICE FOR WORK ON ELEVATOR CAGE
Document Type and Number:
WIPO Patent Application WO/2001/058796
Kind Code:
A1
Abstract:
A safety device (31) for a work on an elevator cage which has a detection plate (33) which can be displaced upward by a pressure applied from below and is hung in an elevator shaft (1). The detection plate (33) is placed between a drive device (21) and a cage (5) so as to allow the maintenance work of the drive device (21) above the cage. A buffer (35) is attached to the lower surface of the detection plate (33). The upward displacement of the detection plate (33) is detected by a plurality of detection switches (34). If at least one of the detection switches (34) is operated by the upward displacement of the detection plate (33), the ascent of the cage is stopped by a stop circuit (40).
Inventors:
ISHII TOSHIAKI
ITO KAZUMASA
TOMIDOKORO MAKOTO
ITO KAZUMASA
TOMIDOKORO MAKOTO
Application Number:
PCT/JP2000/000717
Publication Date:
August 16, 2001
Filing Date:
February 09, 2000
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B66B5/00; (IPC1-7): B66B5/00
Foreign References:
| JPS483961Y1 | 1973-01-31 | |||
| JPH11335018A | 1999-12-07 | |||
| JP2862713B2 | 1999-03-03 | |||
| EP0905081A2 | 1999-03-31 | |||
| JPH0246788U | 1990-03-30 | |||
| EP0926093A1 | 1999-06-30 |
Other References:
See also references of EP 1167268A4
Attorney, Agent or Firm:
Soga, Michiteru (Kokusai Building 1-1, Marunouchi 3-chome Chiyoda-ku Tokyo, JP)
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