JPH0280160U - - Google Patents

Info

Publication number
JPH0280160U
JPH0280160U JP1988159725U JP15972588U JPH0280160U JP H0280160 U JPH0280160 U JP H0280160U JP 1988159725 U JP1988159725 U JP 1988159725U JP 15972588 U JP15972588 U JP 15972588U JP H0280160 U JPH0280160 U JP H0280160U
Authority
JP
Japan
Prior art keywords
manhole
manhole cover
tip
hinge arm
iron pipe
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP1988159725U
Other languages
English (en)
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 filed Critical
Priority to JP1988159725U priority Critical patent/JPH0280160U/ja
Publication of JPH0280160U publication Critical patent/JPH0280160U/ja
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Description

【図面の簡単な説明】
第1図および第2図はそれぞれ従来例を示す断
面図である。第3図および第4図はこの考案の一
実施例を示し、第3図は縦断面図、第4図は平面
図である。 1…マンホール蓋、3…マンホール鉄管、5…
マンホール口、10…ヒンジ、22…ヒンジ腕、
25…ヒンジ腕の先端。

Claims (1)

    【実用新案登録請求の範囲】
  1. マンホール鉄管の内側に開閉するマンホール蓋
    の開閉装置において、マンホール鉄管の外側に、
    先端がマンホール鉄管内に転入し得るように反転
    屈曲したヒンジ腕を軸支し、マンホール蓋の外側
    にヒンジ腕の先端を連結したことを特徴とするマ
    ンホール蓋の開閉装置。
JP1988159725U 1988-12-08 1988-12-08 Pending JPH0280160U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988159725U JPH0280160U (ja) 1988-12-08 1988-12-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988159725U JPH0280160U (ja) 1988-12-08 1988-12-08

Publications (1)

Publication Number Publication Date
JPH0280160U true JPH0280160U (ja) 1990-06-20

Family

ID=31441176

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988159725U Pending JPH0280160U (ja) 1988-12-08 1988-12-08

Country Status (1)

Country Link
JP (1) JPH0280160U (ja)

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