KR930000631B1 - 지하구조물용 자물쇠기구 - Google Patents

지하구조물용 자물쇠기구 Download PDF

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Publication number
KR930000631B1
KR930000631B1 KR1019880002259A KR880002259A KR930000631B1 KR 930000631 B1 KR930000631 B1 KR 930000631B1 KR 1019880002259 A KR1019880002259 A KR 1019880002259A KR 880002259 A KR880002259 A KR 880002259A KR 930000631 B1 KR930000631 B1 KR 930000631B1
Authority
KR
South Korea
Prior art keywords
cover
hook member
opening
cover opening
extension part
Prior art date
Application number
KR1019880002259A
Other languages
English (en)
Korean (ko)
Other versions
KR890005356A (ko
Inventor
히로다까 나가시마
Original Assignee
나가시마 이모노 가부시끼가이샤
나가시마 요시오
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 나가시마 이모노 가부시끼가이샤, 나가시마 요시오 filed Critical 나가시마 이모노 가부시끼가이샤
Publication of KR890005356A publication Critical patent/KR890005356A/ko
Application granted granted Critical
Publication of KR930000631B1 publication Critical patent/KR930000631B1/ko

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1427—Locking devices

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
KR1019880002259A 1987-09-11 1988-03-04 지하구조물용 자물쇠기구 KR930000631B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP139015 1986-06-12
JP?87-139015 1987-09-11
JP1987139015U JPH0540117Y2 (un) 1987-09-11 1987-09-11

Publications (2)

Publication Number Publication Date
KR890005356A KR890005356A (ko) 1989-05-13
KR930000631B1 true KR930000631B1 (ko) 1993-01-28

Family

ID=15235484

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880002259A KR930000631B1 (ko) 1987-09-11 1988-03-04 지하구조물용 자물쇠기구

Country Status (2)

Country Link
JP (1) JPH0540117Y2 (un)
KR (1) KR930000631B1 (un)

Also Published As

Publication number Publication date
JPH0540117Y2 (un) 1993-10-12
JPS6447851U (un) 1989-03-24
KR890005356A (ko) 1989-05-13

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