CA937089A - Manhole cover - Google Patents

Manhole cover

Info

Publication number
CA937089A
CA937089A CA127352A CA127352A CA937089A CA 937089 A CA937089 A CA 937089A CA 127352 A CA127352 A CA 127352A CA 127352 A CA127352 A CA 127352A CA 937089 A CA937089 A CA 937089A
Authority
CA
Canada
Prior art keywords
manhole cover
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.)
Expired
Application number
CA127352A
Other versions
CA127352S (en
Inventor
Chahley William
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.)
WILLIAM CHAHLEY Ltd
Original Assignee
WILLIAM CHAHLEY Ltd
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 WILLIAM CHAHLEY Ltd filed Critical WILLIAM CHAHLEY Ltd
Priority to CA127352A priority Critical patent/CA937089A/en
Priority to US00204094A priority patent/US3772828A/en
Priority to GB4576172A priority patent/GB1367217A/en
Application granted granted Critical
Publication of CA937089A publication Critical patent/CA937089A/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)
  • Pressure Vessels And Lids Thereof (AREA)
CA127352A 1971-11-10 1971-11-10 Manhole cover Expired CA937089A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA127352A CA937089A (en) 1971-11-10 1971-11-10 Manhole cover
US00204094A US3772828A (en) 1971-11-10 1971-12-02 Manhole cover
GB4576172A GB1367217A (en) 1971-11-10 1972-10-04 Manhole cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA127352A CA937089A (en) 1971-11-10 1971-11-10 Manhole cover

Publications (1)

Publication Number Publication Date
CA937089A true CA937089A (en) 1973-11-20

Family

ID=4091449

Family Applications (1)

Application Number Title Priority Date Filing Date
CA127352A Expired CA937089A (en) 1971-11-10 1971-11-10 Manhole cover

Country Status (3)

Country Link
US (1) US3772828A (en)
CA (1) CA937089A (en)
GB (1) GB1367217A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4902165A (en) * 1988-02-19 1990-02-20 Embree Lewis A Locking valve cover
FR2736663B1 (en) * 1995-07-13 1998-02-27 France Telecom LOCKING MECHANISM FOR CLOSING PLATES OF UNDERGROUND CHAMBERS AND RELATED UNLOCKING TOOL
US5683122A (en) * 1996-08-09 1997-11-04 Lee; Eui-Keun Locking device for manhole inner covers
DE19939628A1 (en) * 1999-08-20 2001-02-22 Stahlbau Kurt Klatetzki Gmbh & Closure cover for shaft has rack and pinion operated locking bolt engaging in wall of shaft
GB2392700A (en) * 2002-09-05 2004-03-10 John Fullerton Temporary cover for openings in inspection chambers
GB0516592D0 (en) * 2005-08-12 2005-09-21 Grippsure Ltd Excavation cover anchor
GB2438059A (en) * 2006-05-10 2007-11-14 Oxford Plastic Sys Ltd A load bearing reinforced moulded article
US7484908B2 (en) * 2006-06-12 2009-02-03 David Stadler Manhole cover security lock with controlled pressure release
US7798742B2 (en) * 2007-04-18 2010-09-21 Mcgard, Llc Security key tool for manhole access opening security device
US7896574B2 (en) * 2008-04-09 2011-03-01 Mcgard Llc Self-locking manhole cover
US8888400B2 (en) 2010-10-07 2014-11-18 Mcgard Llc Corrosion-resistant self-locking manhole cover
US9157212B2 (en) 2008-05-22 2015-10-13 Mcgard Llc Corrosion-resistant self-locking manhole cover
CA2726119C (en) * 2009-12-21 2016-03-15 Mcgard Llc Manhole security cover
US9127431B2 (en) 2010-10-07 2015-09-08 Mcgard Llc Manhole security cover
US20160160532A1 (en) * 2014-10-14 2016-06-09 Lockdown, Inc. Security Locking Device for Enclosure Covers
IT201800011019A1 (en) * 2018-12-12 2020-06-12 Dsg S R L Well closing device or similar
US20210310210A1 (en) * 2020-04-07 2021-10-07 RAM Canada Rapid Access Management Inc. Secured service cover assembly
US11761165B1 (en) 2023-02-27 2023-09-19 David M. Stadler Manhole cover

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US419903A (en) * 1890-01-21 Walter l
US811701A (en) * 1905-04-17 1906-02-06 Remington And Sherman Company Boltwork for circular doors.
US1102422A (en) * 1913-03-01 1914-07-07 John Mckeon Manhole-cover.
US1287290A (en) * 1918-03-15 1918-12-10 Robert Golden Manhole-cover.
US1400399A (en) * 1921-03-22 1921-12-13 Oscar H Yaeche Cistern-top
US2391407A (en) * 1943-06-10 1945-12-25 Funk Rudolph Detachable port cover
US2363567A (en) * 1943-06-12 1944-11-28 Henry W Blakeman Cover plate
AT191457B (en) * 1956-03-05 1957-08-26 Voest Ag Lane crossing for bridges
US3263580A (en) * 1964-05-26 1966-08-02 James G Macmillan Safety adaptor for manholes

Also Published As

Publication number Publication date
US3772828A (en) 1973-11-20
GB1367217A (en) 1974-09-18

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