[go: up one dir, main page]

EP0124499A1 - Verfahren und Vorrichtung zum Installieren einer Dränungsmatte für eine Strasse - Google Patents

Verfahren und Vorrichtung zum Installieren einer Dränungsmatte für eine Strasse Download PDF

Info

Publication number
EP0124499A1
EP0124499A1 EP84870045A EP84870045A EP0124499A1 EP 0124499 A1 EP0124499 A1 EP 0124499A1 EP 84870045 A EP84870045 A EP 84870045A EP 84870045 A EP84870045 A EP 84870045A EP 0124499 A1 EP0124499 A1 EP 0124499A1
Authority
EP
European Patent Office
Prior art keywords
drainage mat
horizontally
pointing
axis
advancing
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
EP84870045A
Other languages
English (en)
French (fr)
Other versions
EP0124499B1 (de
Inventor
Barry Joseph Dempsey
Charles Robert Mcquary
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.)
Monsanto Co
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Priority to AT84870045T priority Critical patent/ATE39516T1/de
Publication of EP0124499A1 publication Critical patent/EP0124499A1/de
Application granted granted Critical
Publication of EP0124499B1 publication Critical patent/EP0124499B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/06—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging elements mounted on an endless chain
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/101—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables forming during digging, e.g. underground canalisations or conduits, by bending or twisting a strip of pliable material; by extrusion

Definitions

  • This invention relates to a method and apparatus for inserting an elongated, bendable drainage mat having a rectangular transverse cross section below the surface of the ground in a vertical orientation.
  • Such drainage mat comprises a polymeric core having a plurality of substantially rigid fingers extending from one side of a layer and an enveloping water-permeable fabric.
  • Such drainage mat is particularly advantageous, for instance as highway edge drain.
  • a major,advance in drainage materials is an elongated bendable drainage mat having a rectangular transverse cross section where said drainage mat comprises a polymeric core having a plurality of substantially rigid fingers extending from side of a layer and an enveloping water-permeable fabric.
  • Such drainage mat is disclosed in a copending European patent application filed 29 March 1984 with Applicant's Reference No. 16-52-1348A EP.
  • Some drainage material either because of excess rigidity or difficulty in handling, must be installed, for instance in a highway edge drain application by excavating a considerable length of trench, hauling away the excavated material, inserting the drainage product in the trench and refilling the trench with coarse fill which is substantially pervious to water.
  • Such drainage systems are disadvantageous on the basis of substantial cost to install, for instance in terms of labor for excavation, installation and backfilling as well as costs associated with haulage of excavated and clean backfill material.
  • elongated drainage mat refers to a drainage mat having a length substantially larger than its width or depth.
  • axis of elongation refers to the axis passing through the center of an elongated drainage mat along its length.
  • transverse rectangular cross section refers to a cross section of an elongated drainage mat in a plane normal to the axis of elongation of the drainage mat.
  • pointing means a direction in which the axis of elongation of an elongated drainage mat is extended or aimed.
  • An elongated drainage mat is said to be "vertically-pointed" when the axis of elongation of the drainage mat is generally vertical with respect to the surface of the earth.
  • An elongated drainage mat is said to be "horizontally-pointed" when the axis of elongation of the drainage mat is generally horizontal with respect to the surface of the earth.
  • attitude refers to the attitude of an elongated drain mat having a rectangular transverse cross section determined by the relationship of the axes of the rectangular transverse cross section.
  • An elongated, horizontally-pointed drainage mat having a rectangular transverse cross section is said to be "vertically-oriented" when the axis of the rectangular transverse cross section having the larger dimension is in a vertical position and similarly, the axis of the rectangular transverse cross section having the smaller dimension is in a horizontal position.
  • the same drainage mat, when rotated 90° around its axis of elongation, is said to be "horizontally-oriented".
  • This invention overcomes the disadvantanges of methods and apparatus for installing drainage materials such that elongated bendable drainage mat having a rectangular cross section and bendable only into one of its major surfaces can be readily and advantageously installed below the surface of the ground in a vertical orientation in an advancing trench segment.
  • This invention provides a method for inserting an elongated, bendable drainage mat having a rectangular transverse cross section below the surface of the ground in a vertical orientation.
  • the drainage mat comprises a polymeric core having a plurality of substantially rigid fingers extending from one side of a layer and an enveloping water permeable fabric.
  • the method comprises (a) excavating an advancing trench segment; (b) pulling a boot horizontally along the bottom of the excavated advancing trench segment; wherein said boot comprises means for vertically pointing a horizontally-pointed drainage mat and means for horizontally pointing a vertically-pointed drainage mat; (c) feeding a horizontally-pointed drainage mat sequentially to said means for vertically.
  • a horizontally-pointed drainage mat is fed sequentially to said means for vertically pointing and to said means for horizontally pointing, where said means for vertically pointing and said means for horizontally pointing comprise fixed or rotating guides positioned with the axis at an angle of about 45° from horizontal.
  • This invention also provides apparatus for inserting an elongated, bendable, horizontally-pointed drainage mat below the surface of the ground in a vertical orientation in an advancing trench segment.
  • the apparatus comprises means for vertically pointing a horizontally-pointed drainage mat and means for horizontally pointing a vertically-pointed drainage mat.
  • the means for vertically pointing and means for horizontally pointing comprise guides positioned with the axes at an angle of about 45° from horizontal.
  • the guides may be fixed or rotatable.
  • the means for vertically pointing comprises at least one horizontal guide, having its axis in a horizontal plane, and the means for horizontally pointing comprises at least one guide, having its axis at an angle of about 45° from horizontal.
  • Apparatus of this invention can further comprise a shoe for providing a drainage mat accepting slot at the bottom of said trench, means for excavating an advancing trench segment and means for refilling the excavated trench segment with material, for instance which may have been excavated from the advancing trench segment, and means for directing to one side of said trench a horizontally-pointed drainage mat deposited at the bottom of said trench in a vertical orientation.
  • FIGS 1, 2 and 3 generally illustrate an embodiment of such drainage mat installable by the the method and apparatus of this invention.
  • a water permeable fabric 1 envelops core 2 having a plurality of substantially rigid fingers 4 extending from one side of a layer 3.
  • the direction of the axis of elongation of the mat is indicated by axis 5.
  • Figure 2 schematically illustrates an embodiment of a section of polymeric core useful in the drainage mat where the core has a plurality of hollow cylindrical fingers 24 extending from layer 23 having a multitude of perforations 25.
  • Figure 3 schematically illustrates a transverse cross section of drainage mat where fabric 31 envelops a core having a plurality of substantially rigid fingers 34 extending from one side of a layer 33.
  • Such drainage mat is readily bendable into the surface 35 proximate the ends 37 of the fingers 34. That is, such drainage mat is readily bendable only such that the surface 35 proximate the ends 37 of the fingers 34 become concave, and the surface 36 proximate the layer 33 becomes convex.
  • Such drainage mat can not be folded upon itself into the surface 36 proximate the layer 33 without an undue amount of force which is likely to tear the fabric or deform or collapse the core. This is especially true when the fabric is bonded to the core.
  • Such drainage mat is however readily bendable with little force such that the surface 35 proximate the ends 37 of the fingers 34 will readily and easily bend upon itself even up to about 180° around a bending axis having a radius of less than about 1 inch (2.54 cm) for instance as low as about 0.25 inches (0.62 cm). This bending into the surface proximate the ends of the fingers can be achieved around any bending axis parallel to the surface 35.
  • Figure 5 illustrates various bending axes superimposed on a drainage mat surface 56 proximate the ends of the fingers.
  • Such bending axes are parallel to the surface 56 and are defined by their rotational disposition from axis of elongation 50 of the drainage mat.
  • a bending axis can be rotationally disposed at any angle from 0 to 180° from the axis of elongation 50.
  • the bending axis 51 is normal to the axis of elongation 50 (that is, the bending axis 51 is rotationally disposed at an angle of 90° from the axis of elongation 50).
  • the drainage mat can be folded upon itself around bending axis 51 resulting in a shorter length; or such mat can be rolled into a short cylindrical spiral roll.
  • the bending axis 52 is parallel to the axis of elongation 50 (that is, the bending axis 52 is rotationally disposed at an angle of 90° from the axis of elongation 50).
  • the drainage mat can be folded around bending axis 52 upon itself lengthwise or rolled into a long spiral roll.
  • the axis of elongation 50 of the drainage mat will effect a 90° bend, as illustrated in Figure 6.
  • This property of the drainage mat is particularly useful for those installations where the drainage mat 61 is to be installed below grade in a vertical orientation.
  • the drainage mat can be provided in a vertical orientation above grade and directed to a fixed guide or roller 62 at an angle of about 45°.
  • the drainage mat directed around such a fixed guide or roller 62 will be normal to a horizontal plane and can be directed to a second fixed guide or roller 63 at an angle of about 45° at an elevation below grade.
  • This second fixed guide or roller 63 will direct the drainage mat into a vertical orientation below grade in a position for its utilization.
  • Such fixed guides are generally circular in cross ection to facilitate the drainage mat sliding over their surface. Accordingly fixed guides will preferably have a smooth curved surface.
  • the fingers can comprise a very large group of shaped projections. As illustrated in Figure 2 a preferred finger is a rod-like projection which is cylindrical and projects in a direction normal to the plane of the layer. Fingers of other shapes can be utilized for instance fingers having square, hexagonal, star or oblong cross-sectional shape or with fins, etc. Although solid fingers can be utilized, it is often desired that the fingers be hollow both for ease of fabrication and for minimizing the mass of the core to facilitate installation.
  • the core is often provided with an optimum spacing of fingers which can be characterized as an average center spacing, that is, the distance between centers of fingers intercepting the base. Average center spacing can range from about 1 cm to 10 cm.
  • Cores having utility in the drainage mat of this invention can have fingers of a wide range in length, for instance from about 1 cm to 10 cm.
  • the depth of drainage mat that is the smaller dimension of its rectangular transverse cross section, will be approximated by the length of the fingers, for instance about 1 cm to 10 cm.
  • the length of the drainage mat can be very long, for instance up to about 400 feet (122 meters) or more.
  • the width of the drainage mat that is, the larger dimension of its transverse rectangular cross section, is often at least 7 cm and can range from 15 cm to more than 150 cm, say even up to 365 cm or more. The width will depend on the size of the apparatus used to fabricate the core. Larger sizes can be fabricated by fastening two or more widths of core.
  • guide 64 can be fixed or rotatable. In some cases, it may be advantageous to pass the drainage mat between two generally horizontal guides 64. Because guide 64 is at an angle of 90° from the axis of elongation of the drainage mat, it is often advantageous to utilize guide flanges 65. Such guide flanges 65 provide means for locating the advancing drainage mat, for instance in a central position on angularly oriented guides, such as guides 62 and 63.
  • FIG. 4 illustrates a highway system comprising concrete pavement 41 with an adjoining paved shoulder 42.
  • the concrete pavement 41 overlies a support bed 43.
  • the paved shoulder overlies support 44.
  • This invention provides a method for installing such drainage mat below the surface of the ground in a vertical orientation, for instance as shown in Figure 4.
  • the method comprises (a) excavating an advancing trench segment; (b) pulling a boot horizontally along the bottom of the excavated advancing trench segment; wherein said boot comprises means for vertically pointing a horizontally-pointed drainage mat and means for horizontally pointing a vertically-pointed drainage mat; (c) feeding a horizontally-pointed drainage mat sequentially to said means for vertically pointing and to said means for horizontally pointing; wherein said horizontally-pointed drainage mat is deposited at the bottom of said excavated advancing trench segment in a vertical orientation; and (d) filling the trailing end of the excavated advancing trench segment having said vertically oriented drainage mat.
  • the advancing trench segment can be excavated by use of trenching equipment such as plows, trenching wheels or trenching chains. Often such trenching wheels or trenching chains have hardened cutting surfaces, such as carbide tipped cutting teeth.
  • trenching equipment is illustrated in Figures 7 and 8 which generally shows a mobile power unit 71 towing a boom-mounted chain trencher 72.
  • Such mobile power unit can be track or wheel driven.
  • a boot 73, attached to the trencher 72, is pulled through the excavated trench. The boot is pulled horizontally along the bottom of the excavated trench.
  • the boot is equipped with means for vertically pointing a horizontally-pointed drainage mat and means for horizontally pointing the vertically-pointed drainage mat.
  • the means for vertically pointing a horizontally-pointed drainage mat 75 can comprise a guide 74 having its axes at an angle of about 45° from horizontal.
  • the boot 73 is equipped with such means for vertically pointing a horizontally-pointed drainage mat (for example, a fixed guide or a roller 74 having its axis at an angle of about 45° from horizontal)
  • the boot should utilize a second guide also having its axis at an angle of about 45° from horizontal as the means for horizontally pointing the vertically-pointed drainage mat as indicated by guide 63 in Figure 6.
  • Guides can be installed in the boot at angles other than about 45°. However, guides at about 45° generally provide a direct horizontal/vertical pointing for-the drainage mat. In some instances it may be useful to have variable pitched guides on a pivoting mount to readily vary the depth to which the drainage mat is installed. In such a case the boot can be extendable to facilitate variations in installation depth.
  • a horizontally-pointed drainage mat 75 can be directed in a vertical orientation along the side of the mobile power unit 71 by guide means 76.
  • the drainage mat is fed sequentially to the means for vertically pointing (for instance, a fixed guide or roller 74) and to said means for horizontally pointing.
  • the drainage mat is then deposited at the bottom of the excavated advancing trench segment in a vertical orientation.
  • the trailing end of the excavated trench segment having the vertically oriented drainage mat is then filled. It is often convenient to use the excavated material to fill the trench. This can be simply effected by the use of scraper blades, screws or conveyors attached to the boot. This greatly facilitates installation by eliminating the need to transport large quantities of soil.
  • the boot 73 can be equipped with means for vertically pointing a horizontally-pointed drainage mat which comprises at least one guide 91 having its axis in a horizontal plane.
  • the boot can then utilize a guide having its axis at about 45° to direct the vertically-pointed drainage mat to a horizontal orientation.
  • Figure 9 also illustrates an alternative mode of conveying and feeding the drainage mat to the boot.
  • the drainage mat can be in a vertical spiral roll on a journal 92 supported on a wheeled-carriage which travels alongside the boot.
  • horizontally oriented drainage mat lying alongside the intended path of the trench can be turned 90° toward the boot by means of a horizontal guide at an angle of 45° to the axis of the mat.
  • Such grooving shoe cuts a substantially square groove in the bottom of the trench.
  • Such groove is generally shallow and has a width to accept the drainage mat and hold the drainage mat in a preferred location, usually to one side of the trench, prior to refilling the trench with soil or gravel.
  • a boot 100 can be equipped with means for vertically pointing a horizontally-pointed drainage mat which comprises a horizontal roller 101 having guide flanges 102, said roller being mounted on the boot at bearing blocks 103.
  • the boot has a fixed guide 104 comprising, for instance, a 6.35cm. diameter stainless steel pipe welded to the inside surface of the top plate 105 and bottom plate 106.
  • Detachably connected to the trailing end of the boot is tapered chute 107 which has one rectangular open end corresponding to the rectangular open end of the boot. To position and direct the drainage mat to one side of the trench the other end of the tapered chute is horizontally offset and of narrower rectangular cross section to correspond to dimensions of the drainage mat.
  • a compacting plate 108 It is often convenient and desirable to affix a compacting plate 108 to the trailing end of the tapered chute.
  • Convenient means of attaching the compacting plate to the tapered chute can comprise spring-loaded hinges 109.
  • the compacting plate is useful in holding the drainage mat against one side wall of a trench while fill is added to the trench. The compacting plate can easily be pulled from the advancing fill being added to the excavated trench, thus ensuring that the drainage mat remains positioned at a desired side of the trench.
  • the taped chute including the optional compacting plate, can be rotated 180° to allow installation of the drainage mat on either side of the excavated trench.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
EP19840870045 1983-03-31 1984-03-29 Verfahren und Vorrichtung zum Installieren einer Dränungsmatte für eine Strasse Expired EP0124499B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84870045T ATE39516T1 (de) 1983-03-31 1984-03-29 Verfahren und vorrichtung zum installieren einer draenungsmatte fuer eine strasse.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US48065683A 1983-03-31 1983-03-31
US480656 1983-03-31
US49776483A 1983-05-24 1983-05-24
US497764 1983-05-24

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP19870106006 Division-Into EP0257191B1 (de) 1983-03-31 1984-03-29 Verfahren zum Anlegen einer Strassendrainagematte

Publications (2)

Publication Number Publication Date
EP0124499A1 true EP0124499A1 (de) 1984-11-07
EP0124499B1 EP0124499B1 (de) 1988-12-28

Family

ID=27046660

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19870106006 Expired EP0257191B1 (de) 1983-03-31 1984-03-29 Verfahren zum Anlegen einer Strassendrainagematte
EP19840870045 Expired EP0124499B1 (de) 1983-03-31 1984-03-29 Verfahren und Vorrichtung zum Installieren einer Dränungsmatte für eine Strasse

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19870106006 Expired EP0257191B1 (de) 1983-03-31 1984-03-29 Verfahren zum Anlegen einer Strassendrainagematte

Country Status (3)

Country Link
EP (2) EP0257191B1 (de)
CA (1) CA1213742A (de)
DE (2) DE3482000D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200707A2 (de) * 1985-04-29 1986-11-05 Monsanto Company Einbau einer Strassen-Drainage-Matte

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19840789A1 (de) * 1998-09-08 2000-03-09 Weiss Gmbh & Co Leonhard Verfahren zur Herstellung von Entwässerungskanälen im seitlichen Bodenbereich von Bahngleisen
US6796747B1 (en) * 2003-06-03 2004-09-28 Gregory M. Vreeland Apparatus for installing a silt fence and support posts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB982956A (en) * 1962-07-19 1965-02-10 Weimar Werk Veb Band-guiding device for mole drain apparatus
DE2550735A1 (de) * 1975-11-12 1977-05-18 Hoes Fa Klaus Gerd Draenfraese zum ausheben von graeben und zum verlegen von be- und entwaesserungsrohren
US4028902A (en) * 1976-10-01 1977-06-14 Central Illinois Tile Co. Apparatus for laying elongated flexible tubing
DE3012980A1 (de) * 1980-04-03 1981-10-15 Oltmanns Ziegel Und Kunststoffe Gmbh, 2905 Edewecht Schlitzdraenage und vorichtung zu seiner durchfuehrung
EP0075993A1 (de) * 1981-09-25 1983-04-06 A.A.R.C. (Management) Pty. Limited Drainagerohr

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590588A (en) * 1968-07-01 1971-07-06 Phillips Petroleum Co Process and apparatus for laying a horizontal subterranean film

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB982956A (en) * 1962-07-19 1965-02-10 Weimar Werk Veb Band-guiding device for mole drain apparatus
DE2550735A1 (de) * 1975-11-12 1977-05-18 Hoes Fa Klaus Gerd Draenfraese zum ausheben von graeben und zum verlegen von be- und entwaesserungsrohren
US4028902A (en) * 1976-10-01 1977-06-14 Central Illinois Tile Co. Apparatus for laying elongated flexible tubing
DE3012980A1 (de) * 1980-04-03 1981-10-15 Oltmanns Ziegel Und Kunststoffe Gmbh, 2905 Edewecht Schlitzdraenage und vorichtung zu seiner durchfuehrung
EP0075993A1 (de) * 1981-09-25 1983-04-06 A.A.R.C. (Management) Pty. Limited Drainagerohr

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AGRICULTURAL ENGINEERING, vol. 43, no. 9, September 1962, pages 512-515; J.L. FOUSS et al.: "Plastic-lined mole drains" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200707A2 (de) * 1985-04-29 1986-11-05 Monsanto Company Einbau einer Strassen-Drainage-Matte
EP0200707A3 (de) * 1985-04-29 1987-09-30 Monsanto Company Einbau einer Strassen-Drainage-Matte

Also Published As

Publication number Publication date
EP0257191B1 (de) 1990-04-18
EP0257191A2 (de) 1988-03-02
CA1213742A (en) 1986-11-12
EP0124499B1 (de) 1988-12-28
DE3482000D1 (de) 1990-05-23
EP0257191A3 (en) 1988-03-16
DE3475808D1 (en) 1989-02-02

Similar Documents

Publication Publication Date Title
EP0191533B1 (de) Verfahren und Mittel zum Anbringen einer Materialschicht im Boden
FI68876B (fi) Foerfarande och anordning foer bildande av en vertikaldraen i otten av ett vattendrag
US11060259B2 (en) Cable-laying device and method
US4806043A (en) Method and device for drainage of borders of all stabilized civil engineering areas or of adjacent borders of a structure
US6322288B1 (en) Storm or waste water chamber featuring strain relief notches for flexing and contouring the chamber
US4597693A (en) Method and apparatus for installing highway drainage mat
US5042958A (en) Method and apparatus for installing sewer and drainage pipe
US5573347A (en) Drain preparation apparatus and method of using same
EP0124499B1 (de) Verfahren und Vorrichtung zum Installieren einer Dränungsmatte für eine Strasse
FI74507C (fi) Foerenad skop- och uppbrytningsanordning foer frusen jord.
US4861199A (en) Slit trencher
US3831388A (en) Method for laying pipe
US3605419A (en) Method and apparatus for laying pipe
KR102479896B1 (ko) 트랙터 장착형 암거배수관 매설기를 이용한 암거배수관 시공방법
US5632574A (en) Backfilling device and apparatus therefor
CN214061744U (zh) 一种市政下水道挖掘设备
CN212223905U (zh) 一种管道沟槽开挖支撑结构
Broughton et al. Subsurface drainage installation machinery and methods
ES2878398T3 (es) Dispositivo y procedimiento para el relleno mecánico de zanjas
US4095358A (en) Apparatus for high-speed trench digging beside highways
CN105951913A (zh) 一种道路侧边污水沟自动化处理设备用除污装置
CN212175909U (zh) 一种横穿城市道路地下通道的施工结构
Spoor Application of mole drainage in the solution of subsoil management problems
JP2831501B2 (ja) 下水管路
CN222216719U (zh) 薄壁滴灌带浅埋器

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 FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19850330

17Q First examination report despatched

Effective date: 19860129

EL Fr: translation of claims filed
R17C First examination report despatched (corrected)

Effective date: 19860919

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 39516

Country of ref document: AT

Date of ref document: 19890115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3475808

Country of ref document: DE

Date of ref document: 19890202

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910211

Year of fee payment: 8

Ref country code: AT

Payment date: 19910211

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910218

Year of fee payment: 8

Ref country code: GB

Payment date: 19910218

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19910219

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910222

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19910225

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19910228

Year of fee payment: 8

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910331

Year of fee payment: 8

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920329

Ref country code: GB

Effective date: 19920329

Ref country code: AT

Effective date: 19920329

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19920331

Ref country code: CH

Effective date: 19920331

Ref country code: BE

Effective date: 19920331

BERE Be: lapsed

Owner name: MONSANTO CY

Effective date: 19920331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19921001

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19921130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19921201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84870045.6

Effective date: 19921005