JPS6458718A - Manhole cover - Google Patents

Manhole cover

Info

Publication number
JPS6458718A
JPS6458718A JP62215149A JP21514987A JPS6458718A JP S6458718 A JPS6458718 A JP S6458718A JP 62215149 A JP62215149 A JP 62215149A JP 21514987 A JP21514987 A JP 21514987A JP S6458718 A JPS6458718 A JP S6458718A
Authority
JP
Japan
Prior art keywords
cover
frame
buried
rubber
steel plate
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
Application number
JP62215149A
Other languages
Japanese (ja)
Other versions
JP2594570B2 (en
Inventor
Yutaka Okabe
Yasuharu Kawaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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 Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP62215149A priority Critical patent/JP2594570B2/en
Publication of JPS6458718A publication Critical patent/JPS6458718A/en
Application granted granted Critical
Publication of JP2594570B2 publication Critical patent/JP2594570B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

PURPOSE:To reduce the weight of a cover by a method in which a rigid reinforcing material, e.g., steel plate, etc., is buried in an elastic disc of rubber, etc., to form a cover for manhole. CONSTITUTION:A rigid reinforcing material 4, e.g., steel plate, having a diameter enough to cover the inward flange 2a of an annular frame 2 is buried in an elastic material 3 of rubber, etc., having a diameter larger than the outside diameter of an annular manhole frame 2. A ringed groove 5 to be fitted over the projected line 2b of the frame 2 is formed on the back of the material 3 and a slip-preventing uneven pattern 6 is formed on the surface. A recession 7 is formed through the material 4 from the back side of the material 3, and flaps 8 are provided to the recessions 7.
JP62215149A 1987-08-31 1987-08-31 Manhole cover Expired - Fee Related JP2594570B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62215149A JP2594570B2 (en) 1987-08-31 1987-08-31 Manhole cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62215149A JP2594570B2 (en) 1987-08-31 1987-08-31 Manhole cover

Publications (2)

Publication Number Publication Date
JPS6458718A true JPS6458718A (en) 1989-03-06
JP2594570B2 JP2594570B2 (en) 1997-03-26

Family

ID=16667483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62215149A Expired - Fee Related JP2594570B2 (en) 1987-08-31 1987-08-31 Manhole cover

Country Status (1)

Country Link
JP (1) JP2594570B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5529431A (en) * 1995-02-24 1996-06-25 Alfred T. Francis Temporary manhole cover and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103452136A (en) * 2013-01-09 2013-12-18 丁永杰 Dished manhole cover bearing framework and manhole cover made of same
CN104234085A (en) * 2014-09-01 2014-12-24 贵州省正凯实业发展有限公司 Antitheft inspection well cover

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50153449A (en) * 1974-05-31 1975-12-10
JPS60192031A (en) * 1984-03-09 1985-09-30 Joto Kagaku Kogyo Kk Manhole cover

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50153449A (en) * 1974-05-31 1975-12-10
JPS60192031A (en) * 1984-03-09 1985-09-30 Joto Kagaku Kogyo Kk Manhole cover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5529431A (en) * 1995-02-24 1996-06-25 Alfred T. Francis Temporary manhole cover and method

Also Published As

Publication number Publication date
JP2594570B2 (en) 1997-03-26

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees