Title:
LOCKING DEVICE FOR COVER OF UNDERGROUND STRUCTURE
Document Type and Number:
Japanese Patent JP2002038509
Kind Code:
A
Abstract:
To install a locking means on the rear of a cover body as strength by an annular rib is left as it is maintained even when the cover body has a small diameter.
In the locking device for the cover of the underground structure, the locking device has the frame body of the underground structure and a cover body installed to the frame body in an openable and closeable manner, the annular rib and a margin space are formed to a rear in the cover body and a cover-body locking means is mounted in the margin space.
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Inventors:
KOJIMA MASA
OSHIMA TAKESHI
OSHIMA TAKESHI
Application Number:
JP2000254642A
Publication Date:
February 06, 2002
Filing Date:
July 22, 2000
Export Citation:
Assignee:
ASAHI TEC CORP
International Classes:
E02D29/14; (IPC1-7): E02D29/14
Attorney, Agent or Firm:
Yuji Nosue