NL7404558A - Street manhole support assembly - has steps allowing cover height adjustment with convex and concave supporting faces - Google Patents

Street manhole support assembly - has steps allowing cover height adjustment with convex and concave supporting faces

Info

Publication number
NL7404558A
NL7404558A NL7404558A NL7404558A NL7404558A NL 7404558 A NL7404558 A NL 7404558A NL 7404558 A NL7404558 A NL 7404558A NL 7404558 A NL7404558 A NL 7404558A NL 7404558 A NL7404558 A NL 7404558A
Authority
NL
Netherlands
Prior art keywords
convex
ring
cover
height adjustment
support assembly
Prior art date
Application number
NL7404558A
Other languages
Dutch (nl)
Original Assignee
Nl Ijzergieterij Vulcanus N V
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 Nl Ijzergieterij Vulcanus N V filed Critical Nl Ijzergieterij Vulcanus N V
Priority to NL7404558A priority Critical patent/NL7404558A/en
Publication of NL7404558A publication Critical patent/NL7404558A/en

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
    • E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination

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

Abstract

The manhole has a cover adjustable for height and a cover-supporting ring, and there are stepped portions on ring and base section to determine different cover levels by means of different relative angular positions between the two. The tread portions of the steps diverge from the horizontal plane, there being complementary convex and concave faces on the ring and the base section. The convex faces can be on the base, and the concave ones on the ring. The lower ring can support a separate thin high ring, e.g. of plastic, running round the cover-supporting ring, and extending upwards above the top step. There can be four steps in all, the convex and concave faces extending only in the peripheral direction.
NL7404558A 1974-04-03 1974-04-03 Street manhole support assembly - has steps allowing cover height adjustment with convex and concave supporting faces NL7404558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7404558A NL7404558A (en) 1974-04-03 1974-04-03 Street manhole support assembly - has steps allowing cover height adjustment with convex and concave supporting faces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7404558A NL7404558A (en) 1974-04-03 1974-04-03 Street manhole support assembly - has steps allowing cover height adjustment with convex and concave supporting faces

Publications (1)

Publication Number Publication Date
NL7404558A true NL7404558A (en) 1975-10-07

Family

ID=19821104

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7404558A NL7404558A (en) 1974-04-03 1974-04-03 Street manhole support assembly - has steps allowing cover height adjustment with convex and concave supporting faces

Country Status (1)

Country Link
NL (1) NL7404558A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408421A (en) * 1981-04-30 1983-10-11 Pai Yang Kuang Manhole structure
US5360131A (en) * 1990-06-29 1994-11-01 Philmac Pty. Ltd. Cover height adjuster

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408421A (en) * 1981-04-30 1983-10-11 Pai Yang Kuang Manhole structure
US5360131A (en) * 1990-06-29 1994-11-01 Philmac Pty. Ltd. Cover height adjuster

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