GB2181474A - Self-locking manhole cover - Google Patents

Self-locking manhole cover

Info

Publication number
GB2181474A
GB2181474A GB08622677A GB8622677A GB2181474A GB 2181474 A GB2181474 A GB 2181474A GB 08622677 A GB08622677 A GB 08622677A GB 8622677 A GB8622677 A GB 8622677A GB 2181474 A GB2181474 A GB 2181474A
Authority
GB
United Kingdom
Prior art keywords
cover
locking means
underside
locking
manhole
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
GB08622677A
Other versions
GB2181474B (en
GB8622677D0 (en
Inventor
Johan Refsahl
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.)
FURNES JERNSTOPERI AS
Original Assignee
FURNES JERNSTOPERI AS
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 FURNES JERNSTOPERI AS filed Critical FURNES JERNSTOPERI AS
Publication of GB8622677D0 publication Critical patent/GB8622677D0/en
Publication of GB2181474A publication Critical patent/GB2181474A/en
Application granted granted Critical
Publication of GB2181474B publication Critical patent/GB2181474B/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

A self-locking manhole cover (4) has stiffening ribs (8, 10, 17, 18) secured to its underside and a locking means (6) on its underside, the locking means (6) being intended to engage beneath the flange (2) of a manhole frame (1) when the cover has been placed in the manhole frame. By action against an elastic force which keeps the locking means (6) beneath the flange (2), the locking means (6) may be released from the locking position by operating a tool (14) which is inserted down through a hole (15) in the manhole cover (4). The locking means (6) consists of a protruding boss which is secured to a resilient arm (5) which is secured to the underside of the cover (4) and extends parallel to its plane and essentially parallel to part of the periphery of the cover (4) and near thereto. The cover (4) is on its underside further provided with at least one further locking means (7) intended to engage beneath the flange (2) of the manhole frame (1) when the cover has been positioned in the manhole frame.
GB08622677A 1985-01-30 1986-01-29 Self-locking manhole cover Expired GB2181474B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO850359A NO160455C (en) 1985-01-30 1985-01-30 Device for automatic locking and locking of the cowl lid

Publications (3)

Publication Number Publication Date
GB8622677D0 GB8622677D0 (en) 1986-10-22
GB2181474A true GB2181474A (en) 1987-04-23
GB2181474B GB2181474B (en) 1988-08-03

Family

ID=19888087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08622677A Expired GB2181474B (en) 1985-01-30 1986-01-29 Self-locking manhole cover

Country Status (7)

Country Link
DE (2) DE3690048T (en)
DK (1) DK154519C (en)
FI (1) FI83983C (en)
GB (1) GB2181474B (en)
NO (1) NO160455C (en)
SE (1) SE450713C (en)
WO (1) WO1986004624A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232182A (en) * 1989-03-29 1990-12-05 Philip Craig Access chamber and method of making same, liner and cover therefor
GB2265649A (en) * 1992-04-02 1993-10-06 Colin Edward Staggs Temporary manhole cover
GB2267106A (en) * 1992-05-18 1993-11-24 Grahame George Kermonde A system for securing manhole and pit covers

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2032874T3 (en) * 1987-02-02 1993-03-01 Von Roll Ag SYSTEM TO SECURE A COVER THAT CLOSES AN OPENING.
GB2218054A (en) * 1988-05-06 1989-11-08 George Watkins Removable aperture closing plate
DE3925317A1 (en) * 1989-07-31 1991-02-07 Dallmer Gmbh & Co FLOOR DRAIN
FR2667889A1 (en) * 1990-10-15 1992-04-17 Pont A Mousson (EN) PAVEMENT LOOP BUFFER, LOOK COMPRISING THIS BUFFER AND LOCKING RING FOR SUCH A BUFFER.
DE20204108U1 (en) * 2002-03-14 2003-07-24 Hydrotec Technologies Gmbh & C Cover of a manhole cover and manhole cover
US7293937B2 (en) 2003-03-25 2007-11-13 Aco Severin Ahlmann Gmbh & Co. Kg Cover arrangement
DE10356168B4 (en) * 2003-12-02 2007-04-12 Aco Severin Ahlmann Gmbh & Co. Kg Manhole cover with lifting protection
CN107675726A (en) * 2016-08-01 2018-02-09 先源开 A kind of synchronous adjustable safety inspection well cover
RU2702791C1 (en) * 2018-12-13 2019-10-11 Государственное Унитарное Предприятие "Водоканал Санкт-Петербурга" Manhole cover with retainer and damping lining of manhole cover

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE416483B (en) * 1978-08-25 1981-01-05 Varnesforetagen Ab Tierps Jern Cover device for a manhole, a gutter inlet or the like
GB2085946A (en) * 1980-10-17 1982-05-06 British Steel Corp Locking manhole covers and gully grids
SE436050B (en) * 1983-03-22 1984-11-05 Uponor Ab Locking apparatus for drain cover

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1693190A (en) * 1925-08-29 1928-11-27 Elsa D Theobald Guenther Manhole cover
US1988360A (en) * 1932-10-28 1935-01-15 Lenape Hydraulic Pressing & Fo Manhole frame cover
GB521309A (en) * 1938-11-15 1940-05-17 Augustine Joseph Hartley Improvements in cast iron covers and frames for gullies, manholes, hydrants and the like openings in roads or footpaths
US2535275A (en) * 1946-01-28 1950-12-26 Dixon Frank Thomas Manhole lid clamp
DE820553C (en) * 1948-10-02 1951-11-12 Daimler Benz Ag Door lock
DE7029833U (en) * 1970-08-07 1970-12-17 Passavant Werke LOCKABLE MANHOLE COVER.
US4142329A (en) * 1977-10-25 1979-03-06 Williams Robert C Catch basin grate and receiving frame locking assembly
NL7905854A (en) * 1979-07-30 1981-02-03 Raatjes Egbertus Sijbolt COVER.
GB2119836A (en) * 1982-01-29 1983-11-23 Brickhouse Dudley Mfg Manhole cover or grating and frame assemblies

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE416483B (en) * 1978-08-25 1981-01-05 Varnesforetagen Ab Tierps Jern Cover device for a manhole, a gutter inlet or the like
GB2085946A (en) * 1980-10-17 1982-05-06 British Steel Corp Locking manhole covers and gully grids
SE436050B (en) * 1983-03-22 1984-11-05 Uponor Ab Locking apparatus for drain cover

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232182A (en) * 1989-03-29 1990-12-05 Philip Craig Access chamber and method of making same, liner and cover therefor
GB2265649A (en) * 1992-04-02 1993-10-06 Colin Edward Staggs Temporary manhole cover
GB2265649B (en) * 1992-04-02 1996-03-13 Colin Edward Staggs A manhole cover
GB2267106A (en) * 1992-05-18 1993-11-24 Grahame George Kermonde A system for securing manhole and pit covers
GB2267106B (en) * 1992-05-18 1996-04-10 Grahame George Kermonde A system for securing manhole and pit covers

Also Published As

Publication number Publication date
NO160455C (en) 1995-04-25
SE8604068D0 (en) 1986-09-25
FI83983C (en) 1991-09-25
DK154519B (en) 1988-11-21
DK460886D0 (en) 1986-09-26
DK460886A (en) 1986-09-26
GB2181474B (en) 1988-08-03
FI863887A (en) 1986-09-26
SE450713C (en) 1991-06-25
SE8604068L (en) 1986-09-25
DE3690048C2 (en) 1996-03-28
DK154519C (en) 1989-04-10
WO1986004624A1 (en) 1986-08-14
DE3690048T (en) 1987-03-12
GB8622677D0 (en) 1986-10-22
SE450713B (en) 1987-07-20
NO850359L (en) 1986-07-31
NO160455B (en) 1989-01-09
FI83983B (en) 1991-06-14
FI863887A0 (en) 1986-09-26

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20060128