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| Number | Title | Issue Date |
| 7524142 | Subsurface installation of tubing A tractor attachment for installing tubing beneath the ground includes a frame having a toolbar to which multiple plow assemblies are coupled and spaced apart by rigid spacers. Each plow assembly includes a plow blade and a drop feed tube, mile plow blades extend do... | 04/28/2009 |
| 7150115 | All earth foundation trencher An all-earth foundation trencher has a digger body (1) pivotal selectively on a track-laying chassis (7). The digger body has an earth-mover blade (16) that is manipulatable multi-directionally on a front end. A digger boom (19) has a bas... | 12/19/2006 |
| 7144202 | Silt fence installation apparatus A machine to install the lower edge of silt fence fabric in a seam in the soil includes a frame with a plow member attached. The frame can be mounted to the three point hitch of a tractor so that the machine can be raised, lowered, and tilted while being supported b... | 12/05/2006 |
| 7090433 | Underground cable laying apparatus Presented is an underground cable laying apparatus that leaves virtually no visible scar in the turf under which cable, wire, line, hose, etc. is laid. The apparatus utilizes a pair of angularly displaced turf slicing wheels to slice and separate the turf forming a ... | 08/15/2006 |
| 7044689 | Silt fence installation apparatus A machine to install the lower edge of silt fence fabric in a seam in the soil includes a frame with a plow member attached. The frame can be mounted to the three point hitch of a tractor so that the machine can be raised, lowered, and tilted while being supported b... | 05/16/2006 |
| 6189244 | Self-cleaning narrow ditch trencher and flexible tile installer A narrow-trench earth trencher and flexible tube installer, including a relatively large diameter narrow driven sprocket connected by a chain with attached earth cutters to a relatively small drive sprocket. The trencher includes a carriage frame adapted ... | 02/20/2001 |
| 6186242 | Depth gauge for a vibratory plow A depth gauge (30) is connected to a vibratory plow (10) for indicating the depth of a blade (13). The depth gauge (30) has a rod (31) pivotally connected to the housing (11). The rod (31) has a first end (31a), a second intermediate ground following port... | 02/13/2001 |
| 6183163 | Method and apparatus for laying out a pipeline A method and apparatus for laying a pipeline. Working and receiving pits are dug out. An active working member is dropped into the working pit at a preselected depth. The active working member is fixed to a vertical knife of a power mechanism. Polyethylen... | 02/06/2001 |
| 6061932 | Steerable underwater plow with movable body member A steerable plow configured for towing in a direction along a seabed comprises a body and a soil cutting member slidingly connected to the body. The soil cutting member defines a cutting vane for cutting a trench in the seabed. The body includes two skids... | 05/16/2000 |
| 5988948 | Underwater plough and method for varying ploughing depth An underwater plough for ploughing an underwater bed, the plough comprising a first share (10) and a second share (21) which is movable with respect to the first share whereby the depth of the ploughing profile presented by the plough can be varied.... | 11/23/1999 |
| 5741088 | Apparatus for underground excavation An excavation apparatus comprising: a wedge member for driving through the ground and for slidingly contacting and lifting an overburden located beneath the surface of the ground substantially toward the surface of the ground; a driving attachment member ... | 04/21/1998 |
| 5320451 | Cable laying attachment for tiller A cable laying attachment for an engine driven tiller has a cutter wheel with a plurality of countersunk carbide tips in the teeth of the cutter wheel; the cutter wheel being connected to a tine drive shaft connected to a transmission for transferring pow... | 06/14/1994 |
| 5108229 | Pipe installer and method for installation of pipe A device for installing pipe is provided comprised of a chassis and pivotal shoe connected to such a chassis. The chassis is formed with a metallic frame supported above the ground by a pair of wheels and at its forwardmost portion by a hitch and skid pla... | 04/28/1992 |
| 5090141 | Adjustable blade holder The invention provides automated adjustment of the height of a trenching blade. There is a blade holder having a generally vertical channel defined therein, and support means for carrying the blade holder behind a vehicle at a height above the ground. A t... | 02/25/1992 |
| 4904116 | Apparatus for making tunnels in the ground and for laying supply lines An apparatus for making tunnels and for laying supply lines in the ground comprises an earth displacing machine which is guided by a sword projecting out of the ground to allow the attachment of a power drive engaging the free end of the sword, and makes ... | 02/27/1990 |
| 4892443 | Cable plow A cable plow having a chassis with a pivot arm having a first end pivotably connected to the chassis and a second end pivotably connected to a plow element characterized by an arrangement extending between the plow element and the pivot arm to resist pivo... | 01/09/1990 |
| 4871281 | Trenching tool for installing perforated pipe A highly mobile and accurately positionable trenching tool approaches the surface below which the trench is to be dug at an angle of substantially 90°, enters the earth while maintaining the angle of substantially 90°, and continues its path of travel i... | 10/03/1989 |
| 4741646 | Machine for laying conduct and methods for use thereof An apparatus and method for laying conduit within a trench, using a separable boxlike structure with end walls, side walls, a fill bin compartment internal of the boxlike structure for receiving fill material and dispensing fill material onto the bottom o... | 05/03/1988 |
| 4714381 | Machine for laying conduit and methods for use thereof An apparatus and method for laying conduit within a trench, using a separable boxlike structure with end walls, side walls, a fill bin compartment internal of the boxlike structure for receiving fill material and dispensing fill material onto the bottom o... | 12/22/1987 |
| 4655639 | Plough A plough for burying cable or pipe comprises at least two cutters laterally spaced apart, one being offset at an angle relative to the other for making two spaced apart cuts in a substrate to form a wedge of material. Means are provided for lifting and mo... | 04/07/1987 |
| 4637755 | Apparatus for burying conduit Apparatus for simultaneously burying multiple strands of tubing in a plowed field. The plowed field includes spaced, elongate, generally parallel upstanding beds. A furrow lies in between each adjacent pair of beds. The apparatus buries tubing in the beds... | 01/20/1987 |
| 4461598 | Machine for installing drip irrigation conduit A machine for installing drip irrigation conduit consisting of a horizontally extended hose and upright risers spaced along the hose, the machine being adapted to move along a predetermined track of conduit installation; the machine having a pair of coult... | 07/24/1984 |
| 4447173 | Apparatus for burying drip irrigation tubing Apparatus for simultaneously burying multiple strands of conduit in a plowed field. The plowed field includes spaced, elongate, generally parallel upstanding beds. A furrow lies in between each adjacent pair of beds. The apparatus buries conduit in the be... | 05/08/1984 |
| 4410297 | Marine continuous pipe laying system A marine continuous pipe laying system comprising a variable departure angle reel operably connected to a retractable trenching plow and backfilling apparatus. The reel comprises a pipe straightening mechanism connected to the rotational axis of the reel ... | 10/18/1983 |
| 4293238 | Ditchless drainlayer A ditchless drainlayer comprising a frame mounting a cutter-type working element for laying drainpipes. It is provided with a hydraulic cylinder for changing its angular position and a transmitter of its angular position with an amplifier-converter. Also,... | 10/06/1981 |
| 4269541 | Implement for the laying of cables and the like A plow-like trench cutter is carried by a slide movable vertically between spaced upright ways rigidly coupled to a tractor. The trench cutter has a passage for supplying a line, such as cable or pipe, generally to the bottom of the cutter so that when th... | 05/26/1981 |
| 4260290 | Cable plow assembly The disclosed vibratory cable plow has a generally horizontal boom supported on transverse horizontal and vertical pivots and a trailer supported on the boom by a vertical pivot. A plow blade is supported on a vibration isolating frame beneath the trailer... | 04/07/1981 |
| 4244123 | Guidance device for drain tile laying machine An improved guidance device for use with an earthworking machine, more especially a drain tile laying machine, comprising a earthworking element mounted about a pivot connection. This guidance device comprises a signal emitter and two signal receivers mou... | 01/13/1981 |
| 4200410 | Cable laying device A device is disclosed for excavating a trench in frozen or unfrozen soil and introducing cable within the trench thereby excavated. An integral vibrating or reciprocally moving blade breaks frozen soil and cuts roots, and trench depth, as well as blade an... | 04/29/1980 |
| 4140425 | Cable plow assembly The disclosed vibratory cable plow has a generally horizontal boom supported on transverse horizontal and vertical pivots and a trailer supported on the boom by a vertical pivot. A plow blade is supported on a vibration isolating frame beneath the trailer... | 02/20/1979 |
| 4119157 | Control for cable plows and the like A control mechanism for adjusting the angle and lateral position of a plow blade, which is particularly useful for laying cable, pipe and the like underground. The disclosed control mechanism includes a fixed frame, which is supported on a suitable vehicl... | 10/10/1978 |
| 4114391 | Tape laying trenching apparatus A tape laying, trenching apparatus adapted to be drawn behind a vehicle for the purpose of depositing a tape beneath the surface of the earth. The tape is an identification tape and serves as an underground installation identification means. The trenching... | 09/19/1978 |
| 4091629 | Marine pipeline installation system An apparatus and system for simultaneously laying and burying pipelines as they are constructed in an offshore marine environment which apparatus is comprised of a rigid structural frame having skids to contact the ocean floor as the device is propelled t... | 05/30/1978 |
| 4038828 | Vertical lift and control for plows A vertical lift and tilt control for plows which is particularly suitable for laying cable, pipe and the like underground. The vertical lift mechanism includes a mast assembly having a generally vertical rail and a slide frame slideably mounted on the rai... | 08/02/1977 |
| 3952810 | Slit trenching and cable laying device A slit trenching and cable laying device includes: a frame held above the ground by a support, preferably adjustable to various levels above the ground, a plow for digging a slit trench and laying a cable or line therein, the plow being mounted so as to b... | 04/27/1976 |