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Class Information
Number: 405/179
Name: Hydraulic and earth engineering > Subterranean or submarine pipe or cable laying, retrieving, manipulating, or treating > By means advancing along terrain and guiding pipe or cable into subterranean position > With backfill or bedding material conveying or dispensing means
Description: Methods or apparatus wherein either (a) a bottom layer of material is placed in a trench prior to the placement of the string or conduit therein, or (b) a covering material is either dispensed from a supply hopper or conveyed from the point at which it was removed from the trench, and is deposited upon a string or conduit which has been positioned in the trench.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7607863 |
Automated pipe-laying method and apparatus |
Oct. 27, 2009 |
| 7581903 |
Method of manufacture and installation flowable thermal backfills |
Sep. 1, 2009 |
| 7310896 |
Mechanized unit for protectively encasing a utility in a trench with processed excavated trench material |
Dec. 25, 2007 |
| 7237982 |
Agricultural implement for installing an irrigation system |
Jul. 3, 2007 |
| 7186059 |
Padding machine and method of use |
Mar. 6, 2007 |
| 7074305 |
Pipeline support |
Jul. 11, 2006 |
| 6981342 |
Screening laying box |
Jan. 3, 2006 |
| 6899842 |
Method and installation for laying a cylindrical pipe on a support |
May. 31, 2005 |
| 6854931 |
Apparatus for establishing adjustable depth bed in trenches for utility lines and encasing the lines |
Feb. 15, 2005 |
| 6763925 |
Self propelled backfilling apparatus |
Jul. 20, 2004 |
| 6644891 |
Composition having low thermal resistivity and method for laying underground cables for carrying electrical energy |
Nov. 11, 2003 |
| 6622403 |
Backfill and grading apparatus |
Sep. 23, 2003 |
| 6530723 |
Device and process for excavating and backfilling of soil |
Mar. 11, 2003 |
| 6502333 |
Pipeline padding machine and method |
Jan. 7, 2003 |
| 6478508 |
Apparatus for laying underground electric cables |
Nov. 12, 2002 |
| 6418644 |
Apparatus and method for padding the ground below a duct using excavated soils, equipment for compacting soil below a duct, and a soil-compacting mechanism |
Jul. 16, 2002 |
| 6413018 |
Method for supporting a pipeline in a trench |
Jul. 2, 2002 |
| 6374915 |
Process and apparatus for sealing abandoned well bores |
Apr. 23, 2002 |
| 6371691 |
Method of introducing optical cable into a solid bed |
Apr. 16, 2002 |
| 6345933 |
Tank with backfill deflectors |
Feb. 12, 2002 |
| 6318930 |
Efficient method and pulverizer for pipeline trench padding |
Nov. 20, 2001 |
| 6312194 |
Device for excavating and redepositing earth |
Nov. 6, 2001 |
| 6302257 |
Self propelled backfilling apparatus with controllable steering of material stream |
Oct. 16, 2001 |
| 6280119 |
Apparatus and method for placing and engaging elongate workpieces |
Aug. 28, 2001 |
| 6158925 |
Apparatus for installing pipeline fill |
Dec. 12, 2000 |
| 6139223 |
Trench filler |
Oct. 31, 2000 |
| 6125558 |
High volume pipe padding machine |
Oct. 3, 2000 |
| 6095721 |
Method and device for burying a conduit under water |
Aug. 1, 2000 |
| 6055749 |
Apparatus for padding underground conduits |
May. 2, 2000 |
| 6029378 |
Apparatus for padding underground conduits |
Feb. 29, 2000 |
| 5938373 |
Apparatus for padding a trench including crusher for pulverizing excavated material into grades of material |
Aug. 17, 1999 |
| 5930923 |
Method for operation to excavate underdrain in the field ground and a device for operation to excavate underdrain |
Aug. 3, 1999 |
| 5921707 |
Method of filling an excavated opening |
Jul. 13, 1999 |
| 5913638 |
Sand channel trenching and pipe laying apparatus |
Jun. 22, 1999 |
| 5911544 |
Soil compactor |
Jun. 15, 1999 |
| 5879109 |
Process and apparatus for introducing an optical or electrical cable into solid ground |
Mar. 9, 1999 |
| 5846026 |
Method for pipeline padding |
Dec. 8, 1998 |
| 5765967 |
Method and apparatus for backfilling pipeline trenches |
Jun. 16, 1998 |
| 5765966 |
Sub-surface trenching and backfill apparatus |
Jun. 16, 1998 |
| 5741087 |
Chain separator for padding machine |
Apr. 21, 1998 |
| 5694709 |
Pipeline padding machine with crusher |
Dec. 9, 1997 |
| 5632574 |
Backfilling device and apparatus therefor |
May. 27, 1997 |
| 5611643 |
Process for the construction of trenches |
Mar. 18, 1997 |
| 5540003 |
Padding machine with shaker for separator |
Jul. 30, 1996 |
| 5496135 |
Articulated vehicle for use in confining trench work |
Mar. 5, 1996 |
| 5479726 |
Compact padding machine |
Jan. 2, 1996 |
| 5479728 |
Apparatus for backfilling and tamping a trench |
Jan. 2, 1996 |
| 5452969 |
Apparatus for screening and spreading bedding material in a ditch |
Sep. 26, 1995 |
| 5430962 |
Pipeline padding apparatus with rotary feeder |
Jul. 11, 1995 |
| 5421108 |
High volume pipe padding machine |
Jun. 6, 1995 |
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