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FR2410095A2 - Key operated manhole locking system - includes locking inside hollow lug each side of cover to secure cover inside ring - Google Patents

Key operated manhole locking system - includes locking inside hollow lug each side of cover to secure cover inside ring

Info

Publication number
FR2410095A2
FR2410095A2 FR7736458A FR7736458A FR2410095A2 FR 2410095 A2 FR2410095 A2 FR 2410095A2 FR 7736458 A FR7736458 A FR 7736458A FR 7736458 A FR7736458 A FR 7736458A FR 2410095 A2 FR2410095 A2 FR 2410095A2
Authority
FR
France
Prior art keywords
cover
ring
locking
key operated
locking system
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
FR7736458A
Other languages
French (fr)
Other versions
FR2410095B2 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7736458A priority Critical patent/FR2410095A2/en
Priority to BE183538A priority patent/BE861949A/en
Priority to ES1977233059U priority patent/ES233059Y/en
Priority to US05/866,708 priority patent/US4175781A/en
Priority to CA294,227A priority patent/CA1073722A/en
Priority to IT6700478A priority patent/IT1106541B/en
Priority to OA56362A priority patent/OA05844A/en
Publication of FR2410095A2 publication Critical patent/FR2410095A2/en
Application granted granted Critical
Publication of FR2410095B2 publication Critical patent/FR2410095B2/fr
Granted 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)

Abstract

The manhole cover is secured inside a ring shaped frame so that their top surfaces are level and flush with the road surface. The cover has two rectangular lugs diametrically opposite, which locate in corresponding recesses in the ring. Each lug is hollow, and houses a locking pin with a head at the top with a slot across it which is engaged by a cross piece at the end of a special locking key used by maintenance personnel. This pin has a bar across the bottom, which after passing through a slot at the position of the recess in the ring, is rotated by the key so as to wedge against taper pads on the underside of the ring, locking the cover inside the ring.
FR7736458A 1977-01-05 1977-11-25 Key operated manhole locking system - includes locking inside hollow lug each side of cover to secure cover inside ring Granted FR2410095A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7736458A FR2410095A2 (en) 1977-11-25 1977-11-25 Key operated manhole locking system - includes locking inside hollow lug each side of cover to secure cover inside ring
BE183538A BE861949A (en) 1977-01-05 1977-12-16 LOCKING DEVICE FOR PAVEMENT MANIFOLD OR OTHERS
ES1977233059U ES233059Y (en) 1977-01-05 1977-12-31 IMPROVEMENTS IN THE INTERLOCKING DEVICES FOR THE ROAD CONTROL RECORD COVER.
US05/866,708 US4175781A (en) 1977-01-05 1978-01-03 Latching arrangement for manhole cover
CA294,227A CA1073722A (en) 1977-01-05 1978-01-03 Locking apparatus for road manholes of others
IT6700478A IT1106541B (en) 1977-01-05 1978-01-04 LOCKING DEVICE FOR ROAD COVERS AND SIMILAR
OA56362A OA05844A (en) 1977-01-05 1978-01-04 Locking device for manhole cover or others.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7736458A FR2410095A2 (en) 1977-11-25 1977-11-25 Key operated manhole locking system - includes locking inside hollow lug each side of cover to secure cover inside ring

Publications (2)

Publication Number Publication Date
FR2410095A2 true FR2410095A2 (en) 1979-06-22
FR2410095B2 FR2410095B2 (en) 1983-02-18

Family

ID=9198412

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7736458A Granted FR2410095A2 (en) 1977-01-05 1977-11-25 Key operated manhole locking system - includes locking inside hollow lug each side of cover to secure cover inside ring

Country Status (1)

Country Link
FR (1) FR2410095A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2504452A (en) * 2012-05-30 2014-02-05 Paul Spencer Price Manhole cover with set back seat engaging portion

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1542900A (en) * 1924-02-04 1925-06-23 Maddocks Arthur Manhole cover
US1590811A (en) * 1922-06-29 1926-06-29 Townsend Furnace & Machine Sho Grate lock
US2402246A (en) * 1944-03-06 1946-06-18 Arthur J Gillette Manhole cover locking mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1590811A (en) * 1922-06-29 1926-06-29 Townsend Furnace & Machine Sho Grate lock
US1542900A (en) * 1924-02-04 1925-06-23 Maddocks Arthur Manhole cover
US2402246A (en) * 1944-03-06 1946-06-18 Arthur J Gillette Manhole cover locking mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2504452A (en) * 2012-05-30 2014-02-05 Paul Spencer Price Manhole cover with set back seat engaging portion
GB2504452B (en) * 2012-05-30 2017-09-06 Spencer Price Paul Improvements in and relating to manhole covers

Also Published As

Publication number Publication date
FR2410095B2 (en) 1983-02-18

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Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property