EP0083007A1 - Schachtabdeckung - Google Patents

Schachtabdeckung Download PDF

Info

Publication number
EP0083007A1
EP0083007A1 EP82111515A EP82111515A EP0083007A1 EP 0083007 A1 EP0083007 A1 EP 0083007A1 EP 82111515 A EP82111515 A EP 82111515A EP 82111515 A EP82111515 A EP 82111515A EP 0083007 A1 EP0083007 A1 EP 0083007A1
Authority
EP
European Patent Office
Prior art keywords
frame
manhole cover
counter
ramps
cover according
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.)
Withdrawn
Application number
EP82111515A
Other languages
English (en)
French (fr)
Inventor
Jean-Claude Hauer
Jacques Oger
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.)
Pont a Mousson SA
Original Assignee
Pont a Mousson SA
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 Pont a Mousson SA filed Critical Pont a Mousson SA
Publication of EP0083007A1 publication Critical patent/EP0083007A1/de
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates to a circular manhole cover, of the type comprising a frame and a buffer provided on their periphery with a series of surfaces associated in pairs, including three bearing surfaces and three counter-bearing surfaces interposed between these bearing surfaces.
  • the object of the invention is to provide a look allowing easy and rapid installation of the tampon.
  • the subject of the invention is a manhole cover of the aforementioned type, characterized in that the bearing surfaces of each part of the manhole comprise two ramps inclined circumferentially in the same direction and a flat support.
  • the against-support frame surfaces include a first surface vertical between the two ramps, and two descending surfaces that flank the flat support and which follow with a slightly larger diameter the trajectory followed by the associated surfaces of the tampon during the positioning of the latter.
  • rotation is stopped by the vertical abutment surface, which returns the pad to the other two abutment surfaces.
  • the pad is self-locked when, according to another characteristic of the invention, the descending counter-bearing surfaces are overhanging.
  • the circular gaze shown in Figs. l to 4 consists of two pieces of rough ductile iron foundry, namely a frame l intended to be sealed in a pavement or sidewalk covering and a removable buffer lA.
  • the frame 1 (Fig. 1 and 2), which is moldable without a core, comprises an annular lower sole 2 on the inner periphery of which protrudes upwards an approximately cylindrical skirt 3.
  • Vertical stiffening ribs 4 extend between the sole 2 and the skirt 3. Inside this skirt protrude six surfaces regularly distributed angularly: a planar support 5, a vertical abutment 6 against diametrically opposed to this support last, two helical support ramps 7 framing the stop 6 and two counter-supports 8.
  • an internal retaining collar 9 extends over most of the periphery of the skirt 3, a little below the level of the reliefs 5 to 8.
  • the plane support 5 and the two ramps 7 have approximately the same circumferential extent; the two ramps are inclined by the same angle in the same circumferential direction, which is in this example clockwise, and pass from one level located above support 5 at a level located below this support.
  • the normal N to the stop 6 is inclined at an acute angle ⁇ relative to the corresponding radius of the frame, clockwise.
  • Each counter-support 8 has an overhanging active surface 10 which has a frustoconical shape with the same axis as the frame and which descends clockwise along a slope roughly equal to half the slope of the ramps 7.
  • the pad 1A comprises an upper planar web 11 provided near its periphery with a lower skirt 12 and, inside the latter, of a stiffening rib 13.
  • the diameter of the web 11 is a little less than the inside diameter of the skirt 3 of the frame.
  • the ramps 7A and 7 are exactly conjugate, but the inclination ⁇ upwards of the faces 10A of the counter-supports 8A is a few degrees greater than the inclination ⁇ down of the faces 10 of the counter-supports 8 (Fig. 7).
  • the veil 11 is notched at the right of the counter-supports 8A to allow a coreless molding of the pad.
  • FIGS. 5 and 6 constitute developed diagrams of the region between the plane support 5 and the ramp 7 which precedes it (Fig. 5) and that between the two ramps 7 (Fig. 6).
  • the buffer is placed at an angle so that its flat surface 5A rests on the plane support 5 of the frame., At point Al in FIG. 5.
  • the ramps 7A are then supported on the upper part of the ramps 7, at B1, and the surfaces 10A are located near the counter-supports 10 (points Cl and Dl), but without contact with them.
  • the slope of the ramps 7 and 7A is chosen to be strong enough so that, under the effect of its own weight and taking into account the presence of various particles on the surfaces 5 and 7, the buffer itself initiates a helical type movement descending, possibly initiated by a pickaxe.
  • the ramps 7A slide on the ramps 7, following the path Bl-B2-B3, and the support 5A slides simultaneously on the support 5 along A1-A2-A3.
  • This is permitted by the aforementioned slope of the counter-supports 10, thanks to which the surfaces 10A of the buffer run along these counter-supports without touching them, as represented by the pairs of points C2-D2 and C3-D3:
  • the buffer is locked :; that is to say that it cannot be removed by simple lifting but requires for this a reverse helical movement, which is obtained by acting a tool in a notch 17 of the web 11 (Fig. 4).
  • the buffer 1A is thus self-closing, self-centering, self-locking and stable.
  • its first bias setting can be done very easily, without great precision being necessary, by lateral displacement of the pad on the edge of the frame.

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)
  • Vibration Dampers (AREA)
EP82111515A 1981-12-29 1982-12-11 Schachtabdeckung Withdrawn EP0083007A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8124375 1981-12-29
FR8124375A FR2519046A1 (fr) 1981-12-29 1981-12-29 Regard de chaussee

Publications (1)

Publication Number Publication Date
EP0083007A1 true EP0083007A1 (de) 1983-07-06

Family

ID=9265466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111515A Withdrawn EP0083007A1 (de) 1981-12-29 1982-12-11 Schachtabdeckung

Country Status (2)

Country Link
EP (1) EP0083007A1 (de)
FR (1) FR2519046A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991001412A1 (en) * 1989-07-22 1991-02-07 Duct & Access Covers Ltd. Duct cover
EP0481938A2 (de) * 1990-10-18 1992-04-22 EDIL PLAST S.r.l. Modulrahmen zum Bestimmen der Seiten von Brunnen, Kanalisierungen und Öffnungen im allgemeinen
GB2250307A (en) * 1989-07-22 1992-06-03 Duct & Access Covers Ltd Duct cover
WO1997022760A1 (en) * 1995-12-16 1997-06-26 Envirolite Holdings Limited Manhole cover
US20180291609A1 (en) * 2015-10-07 2018-10-11 Wavin B.V. Inspection chamber for a pipe structure for drainage or sewerage
US11401681B2 (en) * 2018-04-27 2022-08-02 Bingham & Taylor Corp. Snap on meter pit extension

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB482517A (en) * 1936-09-30 1938-03-30 Frederick Turnbull Improvements in and relating to manhole and like covers
DE1107158B (de) * 1958-06-14 1961-05-18 Passavant Werke Rechteckige Schachtabdeckung
FR2082237A5 (de) * 1970-02-26 1971-12-10 Pont A Mousson
DE2049923A1 (de) * 1970-10-10 1972-04-13 Rheinstahl Ag, 4300 Essen Schachtabdeckung von der Form eines Sechseckes
FR2192580A7 (de) * 1972-07-10 1974-02-08 Pont A Mousson

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB482517A (en) * 1936-09-30 1938-03-30 Frederick Turnbull Improvements in and relating to manhole and like covers
DE1107158B (de) * 1958-06-14 1961-05-18 Passavant Werke Rechteckige Schachtabdeckung
FR2082237A5 (de) * 1970-02-26 1971-12-10 Pont A Mousson
DE2049923A1 (de) * 1970-10-10 1972-04-13 Rheinstahl Ag, 4300 Essen Schachtabdeckung von der Form eines Sechseckes
FR2192580A7 (de) * 1972-07-10 1974-02-08 Pont A Mousson

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991001412A1 (en) * 1989-07-22 1991-02-07 Duct & Access Covers Ltd. Duct cover
GB2250307A (en) * 1989-07-22 1992-06-03 Duct & Access Covers Ltd Duct cover
EP0481938A2 (de) * 1990-10-18 1992-04-22 EDIL PLAST S.r.l. Modulrahmen zum Bestimmen der Seiten von Brunnen, Kanalisierungen und Öffnungen im allgemeinen
EP0481938A3 (en) * 1990-10-18 1993-01-27 Edil Plast Di Savorani Sandra E C. - S.A.S. A modular frame for defining and profiling the edges of wells, canalizations for openings in general
US5279083A (en) * 1990-10-18 1994-01-18 Edil Plast S.R.L. Modular frame for defining and profiling the edges of wells, canalizations for openings in general
WO1997022760A1 (en) * 1995-12-16 1997-06-26 Envirolite Holdings Limited Manhole cover
US20180291609A1 (en) * 2015-10-07 2018-10-11 Wavin B.V. Inspection chamber for a pipe structure for drainage or sewerage
US10550562B2 (en) * 2015-10-07 2020-02-04 Wavin B.V. Inspection chamber for a pipe structure for drainage or sewerage
US11401681B2 (en) * 2018-04-27 2022-08-02 Bingham & Taylor Corp. Snap on meter pit extension

Also Published As

Publication number Publication date
FR2519046A1 (fr) 1983-07-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI NL

17P Request for examination filed

Effective date: 19830813

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19860608

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HAUER, JEAN-CLAUDE

Inventor name: OGER, JACQUES