JPS58129955U

JPS58129955U - manhole cover

Info

Publication number: JPS58129955U
Application number: JP2677082U
Authority: JP
Inventors: 正雄吉田
Original assignee: 株式会社荒木製作所
Priority date: 1982-02-25
Filing date: 1982-02-25
Publication date: 1983-09-02
Also published as: JPS6032219Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の−★施例を示す一部切欠平面図、第２
図は第１図の■−■断面図、第３図は第１図の■−■断
面図、第４図は第２図のＩＶ−ＩＶ断面図、第５図、第
６図は夫々内蓋の他の実施例を示す平面図、縦断面図で
ある。１０・・・マンホール枠、２０・・・マンホール蓋、２
０ａ・・・天板、２１・・・バール挿込切欠、２２・・
・位置決め孔、３０・・・内蓋支持部、３１・・・左右
側壁、３２・・・内側壁、３３・・・外側壁、３４・・
・底壁、４０・・・内蓋、４１ｂ・・・ダボ、４２ａ・
・・上向隆記部、５０・・・ばね、Ａ・・・バール。１３３　　ｋ第３図に−−Fig. 1 is a partially cutaway plan view showing a -★ embodiment of the present invention;
The figure is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a sectional view taken along FIG. 7 is a plan view and a vertical cross-sectional view showing another example of the lid. 10... Manhole frame, 20... Manhole cover, 2
0a...Top plate, 21...Crowbar insertion notch, 22...
・Positioning hole, 30... Inner lid support part, 31... Left and right side walls, 32... Inner wall, 33... Outer wall, 34...
・Bottom wall, 40... Inner lid, 41b... Dowel, 42a.
...Takashi Kamimuka, 50...Spring, A...Crowbar. 1 33 k In Figure 3--

Claims

[Scope of utility model registration request]

In a manhole cover having a crowbar insertion notch on the periphery,
An inner lid support part is provided to protrude from the back side of the container leaving a space, and the inner lid is urged against the inner lid support part via a spring so as to close the burl insertion notch from the back side of the lid. Characteristic manhole cover.