JPH0369048U - - Google Patents
Info
- Publication number
- JPH0369048U JPH0369048U JP13130889U JP13130889U JPH0369048U JP H0369048 U JPH0369048 U JP H0369048U JP 13130889 U JP13130889 U JP 13130889U JP 13130889 U JP13130889 U JP 13130889U JP H0369048 U JPH0369048 U JP H0369048U
- Authority
- JP
- Japan
- Prior art keywords
- receiving frame
- lid body
- outer peripheral
- stepped
- manhole cover
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims description 7
Description
第1図は本考案の一実施例に係るマンホールの
蓋の平面図、第2図は第1図のA−A線縦断面図
、第3図は従来のマンホールの蓋の縦断面図、第
4図は他の従来のマンホールの蓋の縦断面図であ
る。
1……受枠、2……蓋本体、3……内周面、4
……上部、5……下部、6……段付面、7……外
周面、8……突起部。
Fig. 1 is a plan view of a manhole cover according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a longitudinal sectional view of a conventional manhole cover. FIG. 4 is a longitudinal sectional view of another conventional manhole cover. 1... Receiving frame, 2... Lid body, 3... Inner peripheral surface, 4
... Upper part, 5 ... Lower part, 6 ... Stepped surface, 7 ... Outer peripheral surface, 8 ... Projection.
Claims (1)
部に内嵌される円板状の蓋本体とを備え、受枠の
内周面を上部が大径で小径の段付円筒面に形成し
、受枠の内周面の上部及び蓋本体の外周面を勾配
が同じ下細りのテーパ面に形成したマンホールの
蓋において、 受枠の段付面と蓋本体の外周部の裏面とのいず
れか一方に、周方向に等間隔を置いて3つの突起
部を形成し、受枠に蓋本体を内嵌した状態で、こ
れら突起部が内周面の段付面と蓋本体の外周部の
裏面との他方に当接されるように構成した事を特
徴とする、マンホールの蓋。[Claim for Utility Model Registration] Comprising an annular receiving frame buried in the ground and a disc-shaped lid body fitted into the upper part of the receiving frame, the inner circumferential surface of the receiving frame has a large diameter at the top and a small diameter at the top. In a manhole cover that is formed into a stepped cylindrical surface and the upper part of the inner peripheral surface of the receiving frame and the outer peripheral surface of the lid body are formed into a tapered surface with the same slope, the stepped surface of the receiving frame and the outer peripheral part of the lid body are Three protrusions are formed at equal intervals in the circumferential direction on either side of the back surface, and when the lid body is fitted into the receiving frame, these protrusions connect the stepped surface of the inner peripheral surface and the lid body. A manhole cover characterized in that it is configured to be in contact with the other side of the outer peripheral part and the back side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989131308U JPH0728201Y2 (en) | 1989-11-11 | 1989-11-11 | Manhole cover |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989131308U JPH0728201Y2 (en) | 1989-11-11 | 1989-11-11 | Manhole cover |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0369048U true JPH0369048U (en) | 1991-07-09 |
JPH0728201Y2 JPH0728201Y2 (en) | 1995-06-28 |
Family
ID=31678824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989131308U Expired - Lifetime JPH0728201Y2 (en) | 1989-11-11 | 1989-11-11 | Manhole cover |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0728201Y2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008237996A (en) * | 2007-03-26 | 2008-10-09 | Nakata Coating Co Ltd | Fine air bubble producer, and washing device, showering device, and fish preserve using the same |
JP2008237995A (en) * | 2007-03-26 | 2008-10-09 | Nakata Coating Co Ltd | Fine air bubble producer, and washing device, showering device, and fish preserve using the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53146262U (en) * | 1977-04-25 | 1978-11-17 | ||
JPS545623A (en) * | 1977-06-15 | 1979-01-17 | Matsushita Electric Ind Co Ltd | Code reading device |
-
1989
- 1989-11-11 JP JP1989131308U patent/JPH0728201Y2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53146262U (en) * | 1977-04-25 | 1978-11-17 | ||
JPS545623A (en) * | 1977-06-15 | 1979-01-17 | Matsushita Electric Ind Co Ltd | Code reading device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008237996A (en) * | 2007-03-26 | 2008-10-09 | Nakata Coating Co Ltd | Fine air bubble producer, and washing device, showering device, and fish preserve using the same |
JP2008237995A (en) * | 2007-03-26 | 2008-10-09 | Nakata Coating Co Ltd | Fine air bubble producer, and washing device, showering device, and fish preserve using the same |
Also Published As
Publication number | Publication date |
---|---|
JPH0728201Y2 (en) | 1995-06-28 |