US3874182A - Method of laying drainage tubing - Google Patents
Method of laying drainage tubing Download PDFInfo
- Publication number
- US3874182A US3874182A US308872A US30887272A US3874182A US 3874182 A US3874182 A US 3874182A US 308872 A US308872 A US 308872A US 30887272 A US30887272 A US 30887272A US 3874182 A US3874182 A US 3874182A
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- US
- United States
- Prior art keywords
- trench
- tubing
- along
- spoil
- supporting plates
- 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
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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
- E02F5/12—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with equipment for back-filling trenches or ditches
Definitions
- ABSTRACT A method of laying generally horizontal wellpoint/- drainage tubing, comprising excavating a trench by mechanically digging out spoil which is then directed away from said trench, laying wellpoint/drainage tubing at the bottom of said trench, and backfilling the trench wholly or partially with water-pervious material other than said spoil, so as to promote a flow of ground water to the tubing.
- a mobile machine for digging and backfilling trenches comprises digging means for excavating spoil to form a trench along a predetermined route at a predetermined depth, directing means arranged to direct the spoil excavated by said digging means away from the trench, and backfilling means associated with the digging means for backfilling the trench with material different from the spoil.
- SUMMARY OF THE INVENTION point/drainage tubing comprising excavating a more or less continuous trench by mechanically digging out soil or the like which is then directed away from said trench, laying a length of flexible or semi-rigid wellpoint/drainage tubing at the bottom of said trench, and back-filling the trench either wholly or partially with suitably pervious material which promotes flow of water to the tubing.
- An open end of the length of wellpoint/drainage tubing may then be connected to a suction pump to draw water from the ground.
- gravity drainage may be achievable.
- Said suitably pervious material may be gravel, aggregate, or other material with similar properties.
- a mobile machine for forming trenches comprising a cutter or digger arm arranged to excavate a relatively narrow trench along a predetermined route at a predetermined depth, means to direct the excavated soil or the like away from the trench, and means for back-filling the trench with material other than said excavated soil or the like or a minor proportion thereof.
- the machine may also be provided with means for laying a length of wellpoint/drainage tubing in the trench as the machine excavates and back-fills.
- FIG. 2 is a perspective view of the machine of FIG. 1, with some modifications, in operation.
- the machine comprises a digger arm which is formed with a series of selfcleaning cutters 11 mounted on an endless chain.
- the machine may be mounted on self-laying tracks 12 of well-known form so that, when advancing along the line ofthe trench to be dug, the cutter arm 10 operates as a chain saw to excavate a. slot-like trench of the order of one foot wide and up to I5 or possibly 20 feet deep.
- a deflector plate 13 or similar device may be provided to direct the flying spoil to one side of the trench being dug.
- a conveyor (20 FIG.2) may be provided to carry the spoil to other means of disposal.
- the machine may also carry a coil of flexible or semirigid plastics tubing 14 which is preferably corrugated and is formed with suction openings along its length.
- the suction openings may be formed as a series of axial slits which also operate as filter openings, but an additional filter, for example in the form of a woven nylon sleeve, may also be provided around the tubing.
- the tubing is fed through a guide 23 into the newly excavated trench to lie along the bottom of the trench.
- the machine is also provided with a hopper 15 containing suitably pervious material such as gravel or aggregate 22, and a chute 16 extends into the trench so that, as the tubing is being laid at the bottom of the trench, the trench is back-filled over the tubing with the gravel, aggregate or the like, which is pervious to water.
- the chute 16 is provided with removable plates at the rear so that the level to which back-filling is effec'ted can be varied.
- a pair of metal tongues 17 may be provided along the working length of the digger arm 10 to hold the possibly unstable trench walls apart during laying of the tubing and also during the subsequent back-filling.
- the machine described above can be employed to lay horizontal tubing at relatively high speeds, and the back-fill of gravel or aggregate accelerates draining of ground water towards the tubing and may also act as a wick to carry water past any lenses of lower permeability (e.g. of clay) which might be present in the area in question.
- the tubing may be connected to a pump to act as horizontal wellpoint tubing or may feed to a suitable lower-level outlet to act as drainage tubing.
- the trench is back-filled as described above but the wellpoint/- drainage tubing 14 will not be laid.
- a method of laying generally horizontal wellpoint/drainage tubing for use in the dewatering of ground comprising progressively excavating a slot-like trench having a width which is small in comparison with the depth of said trench by advancing a digging mechanism along a predetermined route to mechanically dig out spoil, said digging mechanism including a substantially vertically oriented endless chain having a series of cutters thereon, said endless chain and its cutters being driven along a closed.
- said closed path having a length along said trench which is substantially smaller than the depth of said trench, supporting the sides of said trench as said excavating step proceeds by positioning a pair of vertically oriented horizontally spaced plates adjacent the sides of said trench and by advancing said plates along said trench together with said digging mechanism, directing the spoil brought to the top of said trench in a lateral direction away from and to one side of the trench being dug to prevent at least the majority of the spoil removed from the trench from being returned to the trench, laysaid tubing along said predetermined route together with said digging mechanism and supporting plates and by progressively feeding said continuous length off said coil and through a substantially vertically oriented guide structure which is located between said supporting plates at a position rearward of said digging mechanism, said guide structure extending into said trench to a position adjacent to but spaced from the bottom of said trench and said guide structure being advanced along said trench together with said supporting plates to direct said tubing in a substantially vertical direction toward the bottom of said
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A method of laying generally horizontal wellpoint/drainage tubing, comprising excavating a trench by mechanically digging out spoil which is then directed away from said trench, laying wellpoint/drainage tubing at the bottom of said trench, and backfilling the trench wholly or partially with water-pervious material other than said spoil, so as to promote a flow of ground water to the tubing. A mobile machine for digging and backfilling trenches comprises digging means for excavating spoil to form a trench along a predetermined route at a predetermined depth, directing means arranged to direct the spoil excavated by said digging means away from the trench, and backfilling means associated with the digging means for backfilling the trench with material different from the spoil.
Description
Uited States Patent [191 Potter et a1.
[ METHOD OF LAYING DRAINAGE TUBING [75] lnventors: Ernest William Potter, Stansted;
William Ratcliffe; Ronald Noel Allen, both of London, all of England [73] Assignee: Henry Sykes Limited, London,
England [22] Filed: Nov. 22, 1972 [21] Appl. No.: 308,872
[30] Foreign Application Priority Data Nov. 26, 1971 United Kingdom 55101/71 [52] US. Cl. 61/72.5 [51] Int. Cl B02f 5/06, F161 1/00 [58] Field of Search 61/72.6, 11, 72.1, 72.5, 61/727, 41 A [56] References Cited 1 UNITED STATES PATENTS 259,248 6/1882 Wasson 61/72.5 332,126 12/1985 White 61/72.5 1,287,781 12/1918 Steenrod 61/41.A 2,089,115 8/1937 Dimick 61/11 2,830,548 4/1958 McElvanym 61/72.1 3,203,188 8/1965 Evans 61/72.6 3,292,379 12/1966 McElvany 61/72.5 3,309,875 3/1967 Niederwemmer 61/72.6 3,313,115 4/1967 Kniefel 6l/72.6 3,332,249 7/1967 ldoinc 6l/72. 6 3,354,661 11/1967 Russell 61/11 11 Apr. 1, 1975 3,429,134 2/1969 Coffey 61/72.6 3,438,206 4/1969 Stark..... 61/11 3,528,255 9/1970 Blinne 61/72.6 R 3,611,730 10/1971 Brettrager 6l/72.1 3,664,137 5/1972 Lett 61/72.1 3,706,207 12/1972 Cornelius et a1 61/72.6
FOREIGN PATENTS OR APPLICATIONS 1,910,641 9/1970 Germany 61/11 Primary Examiner-Pau1 R. Gilliam Assistant Examiner-Alexander Grosz Attorney, Agent, or FirmElliott I. Pollock [5 7] ABSTRACT A method of laying generally horizontal wellpoint/- drainage tubing, comprising excavating a trench by mechanically digging out spoil which is then directed away from said trench, laying wellpoint/drainage tubing at the bottom of said trench, and backfilling the trench wholly or partially with water-pervious material other than said spoil, so as to promote a flow of ground water to the tubing.
A mobile machine for digging and backfilling trenches comprises digging means for excavating spoil to form a trench along a predetermined route at a predetermined depth, directing means arranged to direct the spoil excavated by said digging means away from the trench, and backfilling means associated with the digging means for backfilling the trench with material different from the spoil.
2 Claims, 2. Drawing Figures METHOD OF LAYING DRAINAGE TUBING BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to the forming of trenches, particularly for use in dewatering or drainage of ground.
2. Description of the Prior Art It is already well known to dewater ground by means of vertical wellpoints which are, essentially, perforated tubes inserted at a suitable depth into the ground and then connected to a suction pump to extract water from the ground. It has also been proposed to lay horizontal wellpoint tubing at the bottom of a trench, the wellpoint tubing being covered by the soil or the like produced in the excavation ofthe trench. Known methods of drainage usually involve non-continuous excavation and back-fill either by mechanical means or manually.
SUMMARY OF THE INVENTION point/drainage tubing comprising excavating a more or less continuous trench by mechanically digging out soil or the like which is then directed away from said trench, laying a length of flexible or semi-rigid wellpoint/drainage tubing at the bottom of said trench, and back-filling the trench either wholly or partially with suitably pervious material which promotes flow of water to the tubing. An open end of the length of wellpoint/drainage tubing may then be connected to a suction pump to draw water from the ground. Alternatively, if the trench is constructed to a suitable fall, gravity drainage may be achievable.
Said suitably pervious material may be gravel, aggregate, or other material with similar properties.
Further according to the present invention there is provided a mobile machine for forming trenches, comprising a cutter or digger arm arranged to excavate a relatively narrow trench along a predetermined route at a predetermined depth, means to direct the excavated soil or the like away from the trench, and means for back-filling the trench with material other than said excavated soil or the like or a minor proportion thereof. The machine may also be provided with means for laying a length of wellpoint/drainage tubing in the trench as the machine excavates and back-fills.
SHORT DESCRIPTION OF THE DRAWINGS An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which FlGil is a perspective schematic view showing a mobile machine for forming trenches, and
FIG. 2 is a perspective view of the machine of FIG. 1, with some modifications, in operation.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawing, the machine comprises a digger arm which is formed with a series of selfcleaning cutters 11 mounted on an endless chain. The machine may be mounted on self-laying tracks 12 of well-known form so that, when advancing along the line ofthe trench to be dug, the cutter arm 10 operates as a chain saw to excavate a. slot-like trench of the order of one foot wide and up to I5 or possibly 20 feet deep.
As the chain rotates at relatively high speed, the excavated spoil 21 is thrown upwardly and a deflector plate 13 or similar device may be provided to direct the flying spoil to one side of the trench being dug. Alternatively or additionally, a conveyor (20 FIG.2) may be provided to carry the spoil to other means of disposal.
The machine may also carry a coil of flexible or semirigid plastics tubing 14 which is preferably corrugated and is formed with suction openings along its length. The suction openings may be formed as a series of axial slits which also operate as filter openings, but an additional filter, for example in the form of a woven nylon sleeve, may also be provided around the tubing. The tubing is fed through a guide 23 into the newly excavated trench to lie along the bottom of the trench.
The machine is also provided with a hopper 15 containing suitably pervious material such as gravel or aggregate 22, and a chute 16 extends into the trench so that, as the tubing is being laid at the bottom of the trench, the trench is back-filled over the tubing with the gravel, aggregate or the like, which is pervious to water. The chute 16 is provided with removable plates at the rear so that the level to which back-filling is effec'ted can be varied.
A pair of metal tongues 17 may be provided along the working length of the digger arm 10 to hold the possibly unstable trench walls apart during laying of the tubing and also during the subsequent back-filling.
The machine described above can be employed to lay horizontal tubing at relatively high speeds, and the back-fill of gravel or aggregate accelerates draining of ground water towards the tubing and may also act as a wick to carry water past any lenses of lower permeability (e.g. of clay) which might be present in the area in question. The tubing may be connected to a pump to act as horizontal wellpoint tubing or may feed to a suitable lower-level outlet to act as drainage tubing.
In a modification of the machine described above, for use in the formation of drainage channels, the trench is back-filled as described above but the wellpoint/- drainage tubing 14 will not be laid.
We claim:
1. A method of laying generally horizontal wellpoint/drainage tubing for use in the dewatering of ground, comprising progressively excavating a slot-like trench having a width which is small in comparison with the depth of said trench by advancing a digging mechanism along a predetermined route to mechanically dig out spoil, said digging mechanism including a substantially vertically oriented endless chain having a series of cutters thereon, said endless chain and its cutters being driven along a closed. path while said digging mechanism is advanced along said predetermined route thereby to bring said spoil to the top of said trench, said closed path having a length along said trench which is substantially smaller than the depth of said trench, supporting the sides of said trench as said excavating step proceeds by positioning a pair of vertically oriented horizontally spaced plates adjacent the sides of said trench and by advancing said plates along said trench together with said digging mechanism, directing the spoil brought to the top of said trench in a lateral direction away from and to one side of the trench being dug to prevent at least the majority of the spoil removed from the trench from being returned to the trench, laysaid tubing along said predetermined route together with said digging mechanism and supporting plates and by progressively feeding said continuous length off said coil and through a substantially vertically oriented guide structure which is located between said supporting plates at a position rearward of said digging mechanism, said guide structure extending into said trench to a position adjacent to but spaced from the bottom of said trench and said guide structure being advanced along said trench together with said supporting plates to direct said tubing in a substantially vertical direction toward the bottom of said trench whereafter, at a location between said supporting plates and adjacent the bottom of said trench, the tubing bends to lie along the bottom of said trench, thereafter immediately and substantially completely backfilling the region of the trench between said supporting plates with a waterpervious material different from the spoil, said backfilling step being effected concurrent with the laying of I said tubing by advancing a hopper containing said water-pervious material along said predetermined route together with said digging mechanism, supporting plates, coil of tubing, and guide structure and by discharging said water-pervious material from said hopper, into said trench and over and around the length of tubing emerging from said guide structure, through a
Claims (2)
1. A method of laying generally horizontal wellpoint/drainage tubing for use in the dewatering of ground, comprising progressively excavating a slot-like trench having a width which is small in comparison with the depth of said trench by advancing a digging mechanism along a predetermined route to mechanically dig out spoil, said digging mechanism including a substantially vertically oriented endless chain having a series of cutters thereon, said endless chain and its cutters being driven along a closed path while said digging mechanism is advanced along said predetermined route thereby to bring said spoil to the top of said trench, said closed path having a length aloNg said trench which is substantially smaller than the depth of said trench, supporting the sides of said trench as said excavating step proceeds by positioning a pair of vertically oriented horizontally spaced plates adjacent the sides of said trench and by advancing said plates along said trench together with said digging mechanism, directing the spoil brought to the top of said trench in a lateral direction away from and to one side of the trench being dug to prevent at least the majority of the spoil removed from the trench from being returned to the trench, laying a continuous length of flexible, perforated tubing along the bottom of the trench by advancing a coil of said tubing along said predetermined route together with said digging mechanism and supporting plates and by progressively feeding said continuous length off said coil and through a substantially vertically oriented guide structure which is located between said supporting plates at a position rearward of said digging mechanism, said guide structure extending into said trench to a position adjacent to but spaced from the bottom of said trench and said guide structure being advanced along said trench together with said supporting plates to direct said tubing in a substantially vertical direction toward the bottom of said trench whereafter, at a location between said supporting plates and adjacent the bottom of said trench, the tubing bends to lie along the bottom of said trench, thereafter immediately and substantially completely backfilling the region of the trench between said supporting plates with a water-pervious material different from the spoil, said backfilling step being effected concurrent with the laying of said tubing by advancing a hopper containing said water-pervious material along said predetermined route together with said digging mechanism, supporting plates, coil of tubing, and guide structure and by discharging said water-pervious material from said hopper, into said trench and over and around the length of tubing emerging from said guide structure, through a discharge chute which extends from the hopper into the trench at a location between said supporting plates and rearward of said guide structure, and connecting the flexible tubing to suction pumping means, said digging mechanism, supporting plates, coil of tubing, guide structure, hopper, and discharge chute all being mounted in fixed position relative to one another on a common structure which is advanced as a unit along said predetermined route.
2. The method of claim 1, wherein the water-pervious material is selected from the group comprising gravel, aggregate and other materials with similar properties.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5510171A GB1407590A (en) | 1971-11-26 | 1971-11-26 | Laying tubing in trenches to dewater ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3874182A true US3874182A (en) | 1975-04-01 |
Family
ID=10472960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US308872A Expired - Lifetime US3874182A (en) | 1971-11-26 | 1972-11-22 | Method of laying drainage tubing |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3874182A (en) |
| BE (1) | BE791865A (en) |
| DE (1) | DE2257209A1 (en) |
| FR (1) | FR2163068A5 (en) |
| GB (1) | GB1407590A (en) |
| NL (1) | NL7215978A (en) |
| ZA (1) | ZA728278B (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998065A (en) * | 1975-10-09 | 1976-12-21 | Charles F. Smith And Son, Inc. | Horizontal wellpointing method and apparatus |
| US4289424A (en) * | 1980-01-07 | 1981-09-15 | Marvin E. Rue | Apparatus for laying conduit, cable and the like in or beneath fill material |
| WO1983000060A1 (en) * | 1981-06-24 | 1983-01-06 | SKRODER, Carl, Peter | Method and machine for the laying down of underwater pipes and cables |
| US4664791A (en) * | 1986-02-07 | 1987-05-12 | Mcclain Ray | Padding machines |
| US4666337A (en) * | 1983-11-08 | 1987-05-19 | Shlomo Pinto | Method and device for insulation of the ground |
| FR2600689A1 (en) * | 1986-06-26 | 1987-12-31 | Rivard Ets | MECHANIZED ASSEMBLY FOR CREATING A TRENCH AND INSTALLING LONG OBJECTS |
| FR2603920A1 (en) * | 1986-09-11 | 1988-03-18 | Fournier Drainage Sa | Machine for continuously laying a draining element in a vertical trench |
| US4871281A (en) * | 1988-02-28 | 1989-10-03 | Justice Donald R | Trenching tool for installing perforated pipe |
| US4955756A (en) * | 1988-05-31 | 1990-09-11 | Ed Klamar | Pipeline padding system |
| USRE34289E (en) * | 1986-02-07 | 1993-06-22 | Ray Mcclain, Inc. | Padding machines |
| US5421108A (en) * | 1991-09-25 | 1995-06-06 | Capitan Trencher Corp. | High volume pipe padding machine |
| US5430962A (en) * | 1988-10-11 | 1995-07-11 | Ozzie's Pipeline Padder, Inc. | Pipeline padding apparatus with rotary feeder |
| FR2714920A1 (en) * | 1994-01-07 | 1995-07-13 | Devin Lemarchand Environnement | Self-loading machine for filling in trenches after laying pipelines or cables |
| US5701692A (en) * | 1996-07-03 | 1997-12-30 | Groundwater Control, Inc. | Containment wall installation process and apparatus |
| US5743675A (en) * | 1994-08-03 | 1998-04-28 | Mears/Cpg, Inc. | Underground cable anode installment system |
| US5765966A (en) * | 1996-10-01 | 1998-06-16 | White; Thomas B. | Sub-surface trenching and backfill apparatus |
| US6095721A (en) * | 1995-07-20 | 2000-08-01 | Geoteknisk Institut | Method and device for burying a conduit under water |
| US6158925A (en) * | 1998-03-24 | 2000-12-12 | Barnard Construction Company, Inc. | Apparatus for installing pipeline fill |
| EP1215339A2 (en) * | 2000-12-18 | 2002-06-19 | Jan Klinge | System for placing and removing draining systems |
| US20060129334A1 (en) * | 2002-11-28 | 2006-06-15 | Mitchell Australasia Pty Ltd. | Trench forming and preparing apparatus |
| US20150096224A1 (en) * | 2012-03-19 | 2015-04-09 | Netafim, Ltd. | Method of indoor mushroom cultivation |
| US10358791B2 (en) * | 2010-01-26 | 2019-07-23 | Husqvarna Ab | Laying machine |
| US11035098B2 (en) * | 2019-01-29 | 2021-06-15 | Timothy Eldred Kilmer | Low disturbance tile installation plow and system thereof |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1594262A (en) | 1977-02-23 | 1981-07-30 | Nat Res Dev | Apparatus and method for injecting granular material in soil |
| EP0201503B1 (en) * | 1984-03-12 | 1991-04-17 | Foundation Technology Limited | Casting of structural walls |
| USRE34576E (en) * | 1984-03-13 | 1994-04-05 | S.W.R. (Australia) Pty., Limited | Casting of structural walls |
| DE3710284C2 (en) * | 1987-03-28 | 1995-01-26 | Zueblin Ag | Device and method for removing soil |
| DE3735679A1 (en) * | 1987-10-22 | 1989-05-03 | Lahmeyer International Gmbh | Arrangement for raising the groundwater level, method of producing the arrangement, and apparatus for carrying out this method |
| DE4214497C1 (en) * | 1992-05-07 | 1993-11-18 | Rogmann Hans Josef | Turf slit-drainage system for sports grounds etc. - fills slits to surface level with drainage material and compacts before covering and re-seeding |
| DE19718330A1 (en) * | 1997-04-30 | 1998-11-19 | Weiss Gmbh & Co Leonhard | Trench processing machine |
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-
0
- BE BE791865D patent/BE791865A/en unknown
-
1971
- 1971-11-26 GB GB5510171A patent/GB1407590A/en not_active Expired
-
1972
- 1972-11-22 ZA ZA728278A patent/ZA728278B/en unknown
- 1972-11-22 US US308872A patent/US3874182A/en not_active Expired - Lifetime
- 1972-11-22 DE DE2257209A patent/DE2257209A1/en active Pending
- 1972-11-24 NL NL7215978A patent/NL7215978A/xx unknown
- 1972-11-24 FR FR7241869A patent/FR2163068A5/fr not_active Expired
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Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998065A (en) * | 1975-10-09 | 1976-12-21 | Charles F. Smith And Son, Inc. | Horizontal wellpointing method and apparatus |
| US4289424A (en) * | 1980-01-07 | 1981-09-15 | Marvin E. Rue | Apparatus for laying conduit, cable and the like in or beneath fill material |
| WO1983000060A1 (en) * | 1981-06-24 | 1983-01-06 | SKRODER, Carl, Peter | Method and machine for the laying down of underwater pipes and cables |
| US4838734A (en) * | 1983-11-08 | 1989-06-13 | Shlomo Pinto | Method and device for forming a fluid permeation control layer of the ground |
| US4666337A (en) * | 1983-11-08 | 1987-05-19 | Shlomo Pinto | Method and device for insulation of the ground |
| US4664791A (en) * | 1986-02-07 | 1987-05-12 | Mcclain Ray | Padding machines |
| USRE34289E (en) * | 1986-02-07 | 1993-06-22 | Ray Mcclain, Inc. | Padding machines |
| FR2600689A1 (en) * | 1986-06-26 | 1987-12-31 | Rivard Ets | MECHANIZED ASSEMBLY FOR CREATING A TRENCH AND INSTALLING LONG OBJECTS |
| EP0251876A1 (en) * | 1986-06-26 | 1988-01-07 | ETS. RIVARD S.A. Société dite: | Mechanized assembly for digging a trench and laying elongate objects |
| FR2603920A1 (en) * | 1986-09-11 | 1988-03-18 | Fournier Drainage Sa | Machine for continuously laying a draining element in a vertical trench |
| US4871281A (en) * | 1988-02-28 | 1989-10-03 | Justice Donald R | Trenching tool for installing perforated pipe |
| US4955756A (en) * | 1988-05-31 | 1990-09-11 | Ed Klamar | Pipeline padding system |
| US5430962A (en) * | 1988-10-11 | 1995-07-11 | Ozzie's Pipeline Padder, Inc. | Pipeline padding apparatus with rotary feeder |
| US5421108A (en) * | 1991-09-25 | 1995-06-06 | Capitan Trencher Corp. | High volume pipe padding machine |
| US6125558A (en) * | 1991-09-25 | 2000-10-03 | Capitan Trencher Corp. | High volume pipe padding machine |
| FR2714920A1 (en) * | 1994-01-07 | 1995-07-13 | Devin Lemarchand Environnement | Self-loading machine for filling in trenches after laying pipelines or cables |
| US5743675A (en) * | 1994-08-03 | 1998-04-28 | Mears/Cpg, Inc. | Underground cable anode installment system |
| US5827013A (en) * | 1994-08-03 | 1998-10-27 | Mears/Cpg | Underground cable anode installment system |
| US6095721A (en) * | 1995-07-20 | 2000-08-01 | Geoteknisk Institut | Method and device for burying a conduit under water |
| US5701692A (en) * | 1996-07-03 | 1997-12-30 | Groundwater Control, Inc. | Containment wall installation process and apparatus |
| US5765966A (en) * | 1996-10-01 | 1998-06-16 | White; Thomas B. | Sub-surface trenching and backfill apparatus |
| US6158925A (en) * | 1998-03-24 | 2000-12-12 | Barnard Construction Company, Inc. | Apparatus for installing pipeline fill |
| EP1215339A3 (en) * | 2000-12-18 | 2002-10-23 | Jan Klinge | System for placing and removing draining systems |
| EP1215339A2 (en) * | 2000-12-18 | 2002-06-19 | Jan Klinge | System for placing and removing draining systems |
| US20060129334A1 (en) * | 2002-11-28 | 2006-06-15 | Mitchell Australasia Pty Ltd. | Trench forming and preparing apparatus |
| US11280061B2 (en) * | 2010-01-26 | 2022-03-22 | Husqvarna Ab | Laying machine |
| US11788252B2 (en) | 2010-01-26 | 2023-10-17 | Husqvarna Ab | Laying machine and a blade assembly |
| US10358791B2 (en) * | 2010-01-26 | 2019-07-23 | Husqvarna Ab | Laying machine |
| US10370820B2 (en) | 2010-01-26 | 2019-08-06 | Husqvarna Ab | Laying machine and a blade assembly |
| US11280060B2 (en) | 2010-01-26 | 2022-03-22 | Husqvarna Ab | Laying machine and a blade assembly |
| US20150096224A1 (en) * | 2012-03-19 | 2015-04-09 | Netafim, Ltd. | Method of indoor mushroom cultivation |
| US9743592B2 (en) * | 2012-03-19 | 2017-08-29 | Netafim, Ltd. | Method of indoor mushroom cultivation |
| US11035098B2 (en) * | 2019-01-29 | 2021-06-15 | Timothy Eldred Kilmer | Low disturbance tile installation plow and system thereof |
| US11473265B2 (en) * | 2019-01-29 | 2022-10-18 | Timothy Eldred Kilmer | Low disturbance tile installation plow and system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA728278B (en) | 1973-08-29 |
| DE2257209A1 (en) | 1973-05-24 |
| FR2163068A5 (en) | 1973-07-20 |
| BE791865A (en) | 1973-03-16 |
| NL7215978A (en) | 1973-05-29 |
| GB1407590A (en) | 1975-09-24 |
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