EP0220295B1 - Siphon de decantation en plastique - Google Patents

Siphon de decantation en plastique Download PDF

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Publication number
EP0220295B1
EP0220295B1 EP86903262A EP86903262A EP0220295B1 EP 0220295 B1 EP0220295 B1 EP 0220295B1 EP 86903262 A EP86903262 A EP 86903262A EP 86903262 A EP86903262 A EP 86903262A EP 0220295 B1 EP0220295 B1 EP 0220295B1
Authority
EP
European Patent Office
Prior art keywords
gully
bottom portion
ribs
stiffening ribs
stiffening
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 - Lifetime
Application number
EP86903262A
Other languages
German (de)
English (en)
Other versions
EP0220295A1 (fr
Inventor
Vagn S. Poulsen
Willem Elzink
Bernhard Lodder
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.)
Wavin BV
Original Assignee
Wavin BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8109295&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0220295(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wavin BV filed Critical Wavin BV
Priority to AT86903262T priority Critical patent/ATE66711T1/de
Publication of EP0220295A1 publication Critical patent/EP0220295A1/fr
Application granted granted Critical
Publication of EP0220295B1 publication Critical patent/EP0220295B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/024—Manhole shafts or other inspection chambers; Snow-filling openings; accessories made of plastic material
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories

Definitions

  • a plastic gully for a piping system for collecting water, particularly surface water comprising a bottom portion provided with at least one inlet and at least one outlet and a top portion integrally formed with said bottom portion and having an access opening through which the system, of which the gully is part may be inspected.
  • a fitting which shows structural resemlance to the gully as indicated above.
  • a fitting is described in said reference which comprises a bottom portion and a top portion whereby the bottom portion is given a rigid character by the presence of ribs which extend there-around.
  • the joint between the bottom portion and the top portion appears to be a weak spot which may cause the gully to collapse or break due to great earth pressure when it is buried in the earth.
  • the present invention has as an object to provide a gully of the type described which does not show above weakness and is to that end characterized in said gully being produced by rotation moulding and at least the bottom portion thereof being rigid which bottom portion is thereto provided with outward facing stiffening ribs whereby one or more of said stiffening ribs of the gully comprise a rectilinear extension over the said top portion and one or more of said ribs, which are farthest from a vertical central plane (A) through the gully extend 360° around the bottom portion whereby one or more of said stiffening ribs extending 360° around the bottom portion are solid and have a substantially smooth inwardly facing surface.
  • a gully according to the invention is given the necessary rigidity and strength in the joint between the bottom portion and the top portion by a combination of measures.
  • Rotation moulding allows the ribs of the gully to be substantially solid which is favourably for the rigidity of the bottom portion.
  • a rectilinear extension to the ribs which extends over the top portion adds to the rigidity of said bottom portion.
  • Ribs extending 360° around the bottom portion assure sufficient rigidity of the sockets of the gully.
  • stiffening ribs adjacent to the vertical plane through the gully comprise a rectilinear extension which causes the strength of the gully as a whole against collapse to be increased.
  • Said extension shaft shows solid transverse ribs which extend around the shaft.
  • the ribs are provided to add to the rigidity of the shaft. Not is described like in the present application that the bottom portion of said inspection chamber is provided with ribs which have a rectilinear extension which extend over the top portion, i.e. the extension shaft.
  • the number of stiffening ribs may according to the invention be at least ten, and this number has proved to be particularly advantageous.
  • each stiffening rib may be constituted by a thickening in the bottom portion and may be cogwheel-tooth-shape in cross-section or of a cross-section delimited by a sinusoidal curve. As a result the stiffening rib will achieve an adequate body.
  • Another embodiment of the inventive gully in which the axis of an inlet and the axis of an outlet form an angle in the range of 100-170°, for instance 135°, and in which the bottom portion is correspondingly curved, is characterised in that the stiffening ribs are situated in planes with substantially equal solid angles. A particarly good stiffening of the bottom portion is thus obtained.
  • auxiliary ribs On the surface part of the bottom portion farthest away from an outer center of curvature of the bottom portion a plurality of auxiliary ribs may according to the invention be provided between the stiffening ribs, said auxiliary ribs being shorter than the stiffening ribs.
  • the stiffening ribs may be constituted by a long helix-shaped rib provided with interruptions in certain places. The rigidity of the bottom portion is thus increased further.
  • the plastics gully illustrated in Fig. 1 comprises a bottom portion 1 and a top portion 2 integrally formed with the bottom portion.
  • the bottom portion 1 comprises an inlet 4, an outlet 5 as well as an in- or outlet 6.
  • the top portion 2 comprises an upper access opening 8, through which the cavity 9 of the bottom portion 1 may be inspected.
  • the bottom portion 1 is as shown provided with stiffening ribs 10 a , 10 b , 10 c , 10 d , 10 e , 10 f , 10 a ′, 10 b ′, 10 c ′, 10 d ′, 10 e ′, 10 f ′, said ribs extending over at least part of the surface, but not necessarily over the entire surface of the bottom portion.
  • the ribs are situated on the outer surface of the bottom portion 1. There is, however, nothing to prevent the ribs from being situated on the inner surface or on the inner as well as on the outer surface of the bottom portion 1.
  • Figs. 1 and 2 illustrate particularly clearly that the bottom portion may comprise a substantially curved portion 1 a , on the outer surface of which the stiffening ribs are located.
  • Fig. 2 illustrates how the axis 4 a of the inlet 4 and the axis 4 b of the outlet 5 are situated in the same plane, whereas a second axis 6 a of a third inlet or outlet 6 are orthogonal to the congruent axes 4 a and 4 b .
  • one or more stiffening ribs 10 f which are farthest from a vertical central plane A through the gully (in Figs. 1 and 2 the plane is orthogonal to the plane of the paper) may as illustrated in Fig. 1 extend 360° around the bottom portion.
  • the inlet 4 and outlet 5 are provided in a kind of sleeves on the bottom portion.
  • the pipes to be joined by means of the gully can be inserted into these sleeves, preferably by using one or more sealing rings (not shown).
  • Fig. 1 illustrates how one or more of the stiffening ribs 10 b , 10 c , 10 d , 10 e , 10 b ′, 10 c ′, 10 d ′, 10 e ′ which are relatively close to the vertical central plane A, may extend along a circular arc smaller than 360°. As illustrated in Fig. 1 the stiffening ribs may be substantially equally spaced; this is, however, no absolute requirement.
  • Fig. 1 further illustrates how the arc, along which each stiffening rib extends, may increase the farther away the stiffening rib is situated from the vertical central plane A. It is, however, also possible that some of the ribs extend over an arc of the same arc measure, e.g. the stiffening ribs 10 d and 10 e . This would correspond to the dotted lines (indicating a side view of the stiffening ribs) being of the same height.
  • One or more of the stiffening ribs may as illustrated in Fig. 3 at one end or the other comprise a rectilinear extension 10 a ′ o more or less extending over the top portion 2.
  • the lower extension part 10 a ⁇ o is as illustrated horizontal, but in connection with the ribs situated somewhat closer to the rib 10 f ′ each stiffening rib is provided with rectilinear, substantially vertical extension parts.
  • the rib 10 f ′ comprises, however, usually no extension parts. These extension parts contribute considerably to the stiffening of the bottom portion.
  • the number of stiffening ribs may be any number, but ten ribs or more are preferred.
  • each stiffening rib 10 a , 10 b , 10 c , 10 d , 10 e , 10 f , 10 a ′, 10 b ′, 10 c ′, 10 d ′, 10 e ′, 10 f ′ may be constituted by a thickening in the wall of the bottom portion 1 and be cogwheel-tooth-shape in cross-section. There is, however, nothing to prevent that each stiffening rib 10 may be of a cross-section delimited by part of a sinusoidal curve 15, cf. Fig. 5.
  • Fig. 5 illustrates another embodiment of the inventive gully, in which the inlet 4 and the outlet 5 form an angle v of about 135°, and in which the bottom portion 1 is correspondingly curved.
  • the angle v will normally be in the range of 100-170°.
  • the Figure illustrates, how the stiffening ribs 20, 20 a , 20 b , 20 c , 20 d , 20 a ′, 20 b ′, 20 c ′, 20 d ′ are situated in planes with substantially equal solid angles ⁇ .
  • auxiliary ribs 21 a , 21 b , 21 c , 21 d , 21 e , 21 f , 21 h may optionally be provided on the surface part 1 f farthest away from the outer center of curvature C of the bottom portion 1.
  • these auxiliary ribs are situated approximately in the midst of the stiffening ribs.
  • the length of the auxiliary ribs is somewhat shorter than the length of the stiffening ribs, as little room is provided for them, cf. the fact that the distance between the stiffening ribs 20 a , 20 b , 20 c , etc. on the side of the bottom portion facing the center of curvature C is comparatively small.
  • stiffening ribs 10 a -10 f , and 10 a ′- 10 f ′ may be constituted by one long helix-shaped rib provided with interruptions in certain places. The interruptions are situated where the helix cuts the top portion 2.
  • the invention may be varied in many ways without thereby deviating from its idea.
  • the function of the inlet 4 and the outlet 5 may thus be changed in such a manner that 4 is an outlet and 5 is an inlet. It is also possible to provide the gully with a sleeve (not shown) at the bottom of Fig. 2, said sleeve serving as inlet or outlet according to requirement.
  • the inventive gully may be used both in piping systems for collecting rain water (surface water) - in which case the piping system and the associated gully are buried in the earth in a depth of about 1.5 m - and for deeper lying piping systems.
  • the parts 4, 5, and 6 may be formed as sleeves, in which a spigot end may be inserted, the parts 4, 5, and 6 may be formed as taper pipe pieces insertable in the end sleeves of the pipes to be joined by means of the gully. It is also possible that some of the parts 4, 5, and 6 be constituted by sleeve parts and the rest of the parts by taper pipe pieces. Consequently, when the words "inlet” and "outlet” are used in the claims it involves no limitation of whether it is a question of a sleeve part or a taper piece part.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Sewage (AREA)
  • Supports For Pipes And Cables (AREA)
  • Table Devices Or Equipment (AREA)
  • Measuring Volume Flow (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Claims (5)

1. Regard en matière plastique pour un réseau de canalisations destiné à recueillir de l'eau, notamment de l'eau de ruissellement, comportant une partie inférieure (1) pourvue d'au moins un orifice d'entrée (4) et d'au moins un orifice de sortie (5), et une partie supérieure (2) réalisée d'une seule pièce avec ladite partie inférieure (1) et munie d'un orifice d'accès (8) à travers lequel il est possible d'inspecter le réseau, dont le regard fait partie,
caractérisé en ce que
ledit regard est fabriqué par moulage par rotation, en ce qu'au moins sa partie inférieure (1) est rigide et pourvue pour cela de nervures de renforcement (10a à 10f ; 10a′ à 10f′) dirigées vers l'extérieur, l'une au moins desdites nervures de renforcement (10a à 10f ; 10a′ à 10f′) du regard comportant un prolongement rectiligne sur ladite partie supérieure (2), et en ce que l'une au moins (10f) desdites nervures les plus eloignées d'un plan central vertical (A) défini à travers le regard s'étend à 360° autour de la partie inférieure (1), l'une au moins de ces nervures de renforcement (10f) qui s'étend à 360° autour de la partie inférieure (1) étant pleine et présentant une surface dirigée vers l'intérieur sensiblement lisse.
2. Regard en matière plastique selon la revendication 1,
caractérisé en ce que
les nervures de renforcement (10a ; 10a′) voisines du plan vertical (A) défini à travers le regard comportent un prolongement rectiligne (10a o′ ; 10a o˝) s'étendant sur la partie supérieure (2).
3. Regard tel que revendiqué dans les revendications 1 et 2,
caractérisé en ce que
l'axe (24) d'un orifice d'entrée (4) et l'axe (25) d'un orifice de sortie (5) forment un angle (v) de 100 à 170°, par exemple de 135°, la partie inférieure (1) étant courbée en conséquence, et les nervures de renforcement (20a à 20d ; 20a′ à 20d′) se trouvent dans des plans dont les angles solides (α) sont sensiblement égaux.
4. Regard tel que revendiqué dans la revendication 3,
caractérisé en ce
qu'il est prévu, sur la partie superficielle (1f) de la partie inférieure (1) la plus éloignée d'un centre extérieur de la courbure (C) de ladite partie inférieure (1), plusieurs nervures secondaires (21a à 21h) placées entre les nervures de renforcement (20a à 20d ; 20a′ à 20d′), lesdites nervures auxiliaires étant plus courtes que les nervures de renforcement.
5. Regard tel que revendiqué dans les revendications 1 à 4, caractérisé en ce que les nervures de renforcement sont formées par une longue nervure de forme hélicoïdale interrompue en certains endroits.
EP86903262A 1985-05-02 1986-05-02 Siphon de decantation en plastique Expired - Lifetime EP0220295B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86903262T ATE66711T1 (de) 1985-05-02 1986-05-02 Sinkkasten aus plastik.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK1990/85 1985-05-02
DK199085A DK167626B1 (da) 1985-05-02 1985-05-02 Nedloebsbroend af plast

Publications (2)

Publication Number Publication Date
EP0220295A1 EP0220295A1 (fr) 1987-05-06
EP0220295B1 true EP0220295B1 (fr) 1991-08-28

Family

ID=8109295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86903262A Expired - Lifetime EP0220295B1 (fr) 1985-05-02 1986-05-02 Siphon de decantation en plastique

Country Status (6)

Country Link
EP (1) EP0220295B1 (fr)
AT (1) ATE66711T1 (fr)
DE (1) DE3681113D1 (fr)
DK (1) DK167626B1 (fr)
IE (1) IE57417B1 (fr)
WO (1) WO1986006429A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699980B1 (fr) * 1992-12-24 1995-03-24 Medinger Jean Claude Tuyauterie conformable formant notamment une cunette préfabriquée.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046811A (en) * 1979-03-12 1980-11-19 Plastiers Ltd Drainage inspection chambers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1992960A (en) * 1932-06-25 1935-03-05 Babcock & Wilcox Co Conduit junction
SE344781B (fr) * 1970-08-10 1972-05-02 Hialmar Andren Ab
GB1363302A (en) * 1972-10-13 1974-08-14 Hepworth Iron Co Ltd Manholes
US3825288A (en) * 1972-11-29 1974-07-23 E Maroschak Fitting for corrugated plastic pipe
DE2755176C2 (de) * 1977-12-10 1980-09-25 Bernhard 8071 Leuting Kessel Reinigungsrohr
GB1577986A (en) * 1978-04-03 1980-10-29 Wavin Bv Inspection chambers
US4504086A (en) * 1983-01-10 1985-03-12 Phillips Petroleum Company Pipe tee

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046811A (en) * 1979-03-12 1980-11-19 Plastiers Ltd Drainage inspection chambers

Also Published As

Publication number Publication date
DK199085A (da) 1986-11-03
DK199085D0 (da) 1985-05-02
ATE66711T1 (de) 1991-09-15
IE57417B1 (en) 1992-08-26
IE861169L (en) 1986-11-02
DK167626B1 (da) 1993-11-29
DE3681113D1 (de) 1991-10-02
WO1986006429A1 (fr) 1986-11-06
EP0220295A1 (fr) 1987-05-06

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