GB1371223A – Manhole cover assembly
– Google Patents
GB1371223A – Manhole cover assembly
– Google Patents
Manhole cover assembly
Info
Publication number
GB1371223A
GB1371223A
GB5359971A
GB5359971A
GB1371223A
GB 1371223 A
GB1371223 A
GB 1371223A
GB 5359971 A
GB5359971 A
GB 5359971A
GB 5359971 A
GB5359971 A
GB 5359971A
GB 1371223 A
GB1371223 A
GB 1371223A
Authority
GB
United Kingdom
Prior art keywords
frame
lugs
notch
manhole cover
undercut
Prior art date
1971-01-06
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.)
Expired
Application number
GB5359971A
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.)
DUMORTIER R
Original Assignee
DUMORTIER R
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.)
1971-01-06
Filing date
1971-11-18
Publication date
1974-10-23
1971-11-18
Application filed by DUMORTIER R
filed
Critical
DUMORTIER R
1974-10-23
Publication of GB1371223A
publication
Critical
patent/GB1371223A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
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
Abstract
1371223 Manhole covers R DUMORTIER 18 Nov 1971 [6 Jan 1971] 53599/71 Heading E1G A circular manhole cover 3 seated on an internal radial flange 5 of a frame 2 has one or more radial lugs 14 each cooperating with an undercut notch 8 in a peripheral wall 7 of the frame to provide a bayonet type interlock. Each notch 8 is open-topped and has its side walls defined by an undercut projection 10 providing the bayonet slot, and the ramp 13 which cooperates with a lug 14 to turn the cover into locking position under its own weight. The lugs 14 are accommodated in opentopped recesses 15 of the frame. When the road 23 is resurfaced the effective frame height is raised by superposing one or more spacer rings, Figs. 5, 6 (not shown) having upper and lower interlock formations corresponding to the lugs 14 and notches 8.
GB5359971A
1971-01-06
1971-11-18
Manhole cover assembly
Expired
GB1371223A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
FR7100849A
FR2120580A5
(en)
1971-01-06
1971-01-06
Publications (1)
Publication Number
Publication Date
GB1371223A
true
GB1371223A
(en)
1974-10-23
Family
ID=9070145
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB5359971A
Expired
GB1371223A
(en)
1971-01-06
1971-11-18
Manhole cover assembly
Country Status (10)
Country
Link
BE
(1)
BE774226A
(en)
CH
(1)
CH535872A
(en)
DE
(1)
DE2162996C3
(en)
ES
(1)
ES206412Y
(en)
FR
(1)
FR2120580A5
(en)
GB
(1)
GB1371223A
(en)
IT
(1)
IT942838B
(en)
LU
(1)
LU64133A1
(en)
NL
(1)
NL7200161A
(en)
OA
(1)
OA03818A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2376494A
(en)
*
2001-06-14
2002-12-18
Wrekin Welding & Fabrication E
Frame arrangement for a ground surface access assembly
CN102433895A
(en)
*
2011-10-24
2012-05-02
江苏通全球工程管业有限公司
Inspection pit shaft
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
AT354945B
(en)
*
1973-03-06
1980-02-11
Gustav Weiss Eisengiesserei In
CANAL SHAFT ENCLOSURE
DE3039790C2
(en)
*
1980-10-22
1983-09-15
Adam 6101 Modautal Klenk
Manhole cover designed in the manner of a bayonet lock
FR2652598B1
(en)
*
1989-09-29
1991-12-13
Pont A Mousson
LOOKING HINGE WITH LOCKED HINGE.
1971
1971-01-06
FR
FR7100849A
patent/FR2120580A5/fr
not_active
Expired
1971-10-19
CH
CH1529171A
patent/CH535872A/en
not_active
IP Right Cessation
1971-10-20
OA
OA54399A
patent/OA03818A/en
unknown
1971-10-20
BE
BE774226A
patent/BE774226A/en
unknown
1971-10-22
LU
LU64133D
patent/LU64133A1/xx
unknown
1971-11-15
IT
IT70713/71A
patent/IT942838B/en
active
1971-11-18
GB
GB5359971A
patent/GB1371223A/en
not_active
Expired
1971-12-17
ES
ES1971206412U
patent/ES206412Y/en
not_active
Expired
1971-12-18
DE
DE2162996A
patent/DE2162996C3/en
not_active
Expired
1972
1972-01-06
NL
NL7200161A
patent/NL7200161A/xx
not_active
Application Discontinuation
Cited By (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2376494A
(en)
*
2001-06-14
2002-12-18
Wrekin Welding & Fabrication E
Frame arrangement for a ground surface access assembly
GB2376494B
(en)
*
2001-06-14
2005-09-07
Wrekin Welding & Fabrication E
Ground surface access assemblies
CN102433895A
(en)
*
2011-10-24
2012-05-02
江苏通全球工程管业有限公司
Inspection pit shaft
Also Published As
Publication number
Publication date
LU64133A1
(en)
1972-05-12
NL7200161A
(en)
1972-07-10
IT942838B
(en)
1973-04-02
ES206412U
(en)
1976-02-16
ES206412Y
(en)
1976-06-16
OA03818A
(en)
1971-12-24
FR2120580A5
(en)
1972-08-18
CH535872A
(en)
1973-04-15
DE2162996B2
(en)
1977-10-27
BE774226A
(en)
1972-02-14
DE2162996C3
(en)
1978-06-15
DE2162996A1
(en)
1972-07-20
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Friction clutch with diaphragm spring – has additional recesses in clutch cover for holders extending through spring
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A conceptual framework for the analysis of service systems: an ideo-structural model
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(en)
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Legal Events
Date
Code
Title
Description
1975-03-05
PS
Patent sealed
1983-06-22
PCNP
Patent ceased through non-payment of renewal fee
