Tracto-technik Gmbh & Co. Kg

Tracto-technik Gmbh

Gdf Suez

Scotland Gas Networks Plc

Southern Gas Networks Plc

Tracto-technik Paul Schimdt Spezialmaschinen

Grtgaz S.a.

Elmar Koch

Sebastian Fischer

Martin Köper

Andreas Joachim Hanses

Dieter Wurm

Franz-Josef Püttmann

Stefan Hermes

Lucas Jostes

Tobias Klein

Klaus Zerbs

Thomas Schauerte

Stefan Maschke

Frank Göcke

Joachim Schmidt

Rouwen Homringhaus

Michael Heimes

Sebastian Schwarzer

Ferdinand Funke

Philip Schumacher

A device for inserting a pipe into an elongated cavity, comprising at least two pipe grippers which can be moved along a curved path and which are arranged and designed in such a way that they grip around the pipe at least in sections and, in the gripped state, they move curved at least for a portion.

Device for inserting a pipe into an elongated cavity

A long-shaft tool includes a shaft extending along a longitudinal axis and having a handle at a first end of the shaft and a second end opposite the first end with a holder for a manipulator wherein the holder has a protruding latch pin provided for engagement with a recess of a manipulator, which can be moved from the protruding position into a retracted position. The holder has a coupling half for coupling with a coupling half of a manipulator which is rotatable relative to a base body of the shaft.

Long-shaft tool, system comprising a long-shaft tool with a first manipulator and a second manipulator as well as use for such a tool and such a system

A mixing system for producing a drilling fluid for ground drilling includes a feed for a powdered medium and a mixing chamber with a feed for a fluid medium. A space is provided between the feed for the powdered medium and the mixing chamber, having sliding elements therein, which sliding elements can seal off the space at one end.

Mixing system and method for producing a drilling fluid for ground drilling and use in producing a drilling fluid for ground drilling

A top surface drilling device has a core bit and a drill head disposed in the core bit. The drill head has a smaller diameter than that of the core bit, and the core bit and the drill head can be driven at different angular speeds.

Top surface drilling device and methods for drilling a core in a top surface

A rod section having an electrical conductor which is arranged such that it is centered at the end and has an insulating sleeve and is fixed in the rod section such that when the rod section is joined to a further rod section having a fixed conductor, both conductors are joined together in a forcibly guided manner and the join is sealed by the sleeve in a forcibly guided manner.

Rod section and rod section system

A method for producing a horizontally drilled bore hole in the ground includes the steps of producing a pit having a circular cross-section; lowering a horizontal drilling device into the pit, the horizontal drilling device having a circular cross-section in at least part of the section in which it is positioned once it is lowered into the pit; and producing a horizontally drilled bore hole using the horizontal drilling device.

Method for producing a horizontal bore in the ground and horizontal drilling device

A horizontal drilling device according to the invention includes a linear drive, a rotary drive that can be displaced by means of the linear drive, a drill rod assembly and a rod assembly pipe receiver, the drill rod assembly being hollow and the rod assembly receiver being designed as a receiving mandrel, which allows the drill rod assembly to be placed on the receiving mandrel.

Horizontal drilling device

A dual pipe rod assembly section includes an inner rod section and an outer rod section, with a probe which is arranged in the dual pipe rod assembly section, a horizontal drilling device and a probe housing. The probe is arranged in the inner rod section and rotationally coupled to the outer rod section.

Dual pipe rod assembly section, horizontal drilling device and probe housing

A method for operating a horizontal drilling device includes the steps of fixing a rod assembly section within a through-opening formed by a rotational drive of the horizontal drilling device, and connecting the rod assembly section to a rear end of a drill rod assembly of the horizontal drilling device or releasing the rod assembly section from the drill rod assembly by a linear and/or rotational movement of the rotational drive, wherein force transmission means for transmitting compressive and/or pulling forces and/or a rotational torque to the drill rod assembly are provided in the through-opening, wherein the rotational drive is displaceable by a linear drive of the horizontal drilling device, and wherein the drill rod assembly is configured as rod assembly string and is composed of a plurality of interconnected rod assembly sections.

Method for operating a horizontal drilling device and horizontal drilling device

The invention relates to a guide device for a drilling device, comprising a housing having deflection means for generating a side force, and a shaft rotatably supported within the housing, wherein the shaft comprises connection means at a first end for connecting to a drilling rod, and connection means at a second end for connecting to a drilling head, and wherein coupling means are provided for connecting the shaft to the housing in a rotationally fixed manner as needed.

Guiding device for a drilling device

A rod assembly for a device for trenchless rehabilitation of pipelines includes at least two rod sections connectable to one another by a plug connection in a tension-proof manner, with at least a first one of the rod sections having an end formed with a lateral opening, and a second one of the rod sections having an end formed with a crosspiece for insertion in the lateral opening of the first rod section. Those end faces of the lateral opening and the crosspiece which are pressed against one another in response to a tensile load of the rod assembly have an arched configuration.

Rod assembly and device for trenchless rehabilitation of pipelines

A threaded plug for a threaded connection includes a core having an exterior thread. At least one flank of the exterior thread forms a segment of an ellipse, wherein the segment of the ellipse extends continuously from a root of the thread to a corresponding crest of the thread. A threaded connection can be formed by combining the threaded plug with a threaded bushing having an interior thread constructed to engage with the exterior thread of the threaded plug.

Threaded connection

The invention relates to a tool for longitudinally subdividing buried sewer pipes having an asymmetric, generally oval cross section, made substantially of a support shoe opposing a cutting blade acting in the direction of the pipe axis. The device also has two side cutting blades and is moved through the old pipe by means of a rod and a cylindrical calibration mandrel.

Tool for longitudinally subdividing sewer pipes

The invention relates to a method for determining the wear of a force-loaded linkage of an earthwork device, wherein the instantaneous load on the linkage is measured during operation of the earthwork device and used to perform a calculation of the service life.

Method for determining the wear of a force-loaded linkage of an earth-working device

In a method for rehabilitating an old pipe, the outer diameter of a new pipe, which is at least equal to the inner diameter of the old pipe, is initially reduced, and the new pipe is then inserted into the old pipe, the outer diameter of the new pipe remaining at least partially reduced during the insertion process. The invention is characterized in that an expanding device is moved through the old pipe ahead of the new pipe.

Growing community of inventors

Eslohe, Germany

Elmar Koch