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Title:
CONVEYOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2003/072481
Kind Code:
A1
Abstract:
Mountain-shaped or valley-shaped bent portions (13) are provided at portions in the vicinity of a drive sprocket (9) of a step guide rail (3) for guiding movement of step rollers (5) linked by a step chain (7). With this structure, speed variation produced in the step rollers (5) caused when the step rollers (5) engage with the drive sprocket (9) is absorbed by the bent portions (13), the movement speed of the step rollers (5) moving downstream from the bent portions (13) is maintained almost constant, and vibration of steps (4) is prevented.

Inventors:
ISHIKAWA YOSHINOBU (JP)
MUNAKATA TADASHI (JP)
OGIMURA YOSHIO (JP)
TESHIMA NOBUHIKO (JP)
NAKAGAKI SHIGEO (JP)
KAWAMOTO HITOSHI (JP)
FUJII KENICHI (JP)
MATSUURA TOMOHIKO (JP)
IKEDA YOSHIFUMI (JP)
HARA KAZUHISA (JP)
KIKUCHI TAKAYUKI (JP)
Application Number:
PCT/JP2003/002387
Publication Date:
September 04, 2003
Filing Date:
February 28, 2003
Export Citation:
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Assignee:
TOSHIBA ELEVATOR KK (JP)
ISHIKAWA YOSHINOBU (JP)
MUNAKATA TADASHI (JP)
OGIMURA YOSHIO (JP)
TESHIMA NOBUHIKO (JP)
NAKAGAKI SHIGEO (JP)
KAWAMOTO HITOSHI (JP)
FUJII KENICHI (JP)
MATSUURA TOMOHIKO (JP)
IKEDA YOSHIFUMI (JP)
HARA KAZUHISA (JP)
KIKUCHI TAKAYUKI (JP)
International Classes:
B66B23/02; B66B23/14; B66B23/24; B66B29/00; (IPC1-7): B66B23/14
Foreign References:
JPH09202583A1997-08-05
JP2001226063A2001-08-21
JP2000177965A2000-06-27
JPH08108986A1996-04-30
JPH02243489A1990-09-27
JPH0134915B21989-07-21
Other References:
See also references of EP 1479640A4
None
Attorney, Agent or Firm:
Miyoshi, Hidekazu (2-8 Toranomon 1-chome, Minato-k, Tokyo 01, JP)
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