Abstract: A device for dampening the action of a force on an electronic component, particularly one in the form of a probe, wherein the device comprises a receptacle space for the component, which is surrounded by an outer wall along a longitudinal axis, and transversely to the longitudinal axis there is situated an end closure of the receptacle space, wherein the outer wall and the closure comprise the same material and the material has a structural conformation which produces a dampening effect of the device in the longitudinal direction.

Abstract: The invention relates to a rod section system for forming an extendable drill string for a ground drilling device, wherein the rod section system has a controllable drill head and rod sections. The controllable drill head has a rotatable drill head tip, wherein a probe is present, which is connected to the drill head tip, and the probe is designed to determine the rolling of the drill head tip, wherein the rod sections are configured for determining a rolling of the rod sections.

Abstract: The invention relates to a threaded plug on an elongated body for a threaded connection to a threaded bushing, wherein the threaded plug has a conical external thread, in which a section of a flank of the external thread can be represented as a section of a function which has a curvature, wherein the section of the function has an angle to a connecting line of adjacent thread bases or thread tips that is greater than 45° over a height of at least 0.3 times the thread height.

Abstract: The invention relates to a rod section of a ground drilling rod, wherein the rod section is configured at the end side to form at least one plug connection and has at one end (a) a male connector with an outer contour or (b) a female connector with an inner contour, wherein, in cross section, the outer contour or the inner contour has a shape deviating from a circle.

Abstract: The invention relates to a threaded bushing on an elongated body for a threaded connection with a threaded plug, wherein the threaded bushing has a conical internal thread, in which adjacent flanks of the internal thread are designed as sections of two identical ellipses offset from one another.

Abstract: The invention relates to an earth boring device for introducing in a rotating, pushing and/or pulling manner a boring string into the ground, with a operating part, in particular a remote control, for controlling functions of the earth boring device, and a monitoring device for monitoring a presence and/or a movement, in particular of a person, in a region between an entry of the boring string into the ground and an exit of the boring string from the earth boring device, wherein the monitoring device has sensors, the signal of which is used to send a signal to a display and thus trigger an adjustment of the display in case of the presence and/or a movement, in particular of a person.

Abstract: The invention relates to a method for introducing a boring channel in the ground by means of an earth boring device, wherein the earth boring device has a boring head which is moved to introduce the boring channel in the ground, and the method comprises the steps: a) detecting obstacles in front of and/or next to the boring head; b) displaying the position of a detected obstacle relative to the boring head; c) issuing a shutdown warning if the distance between the detected obstacle and the boring head is less than a first, in particular selectable, distance; d) stopping boring of the boring channel when a shutdown warning is issued; e) verifying an acknowledgment for continued introduction of the boring channel when a shutdown warning has been issued and boring stopped; and f) continuing the introduction of the boring channel upon successful verification of the acknowledgment.

Abstract: The invention relates to a control for at least one retainer of a transfer device for a rod section of a ground drilling device, wherein the ground drilling device is configured for moving a drill string, and the transfer device is configured for transferring the received rod section from a position in a rod magazine to a position on the drill string or vice versa, and the control is configured to move the retainer between a position above the rod magazine and the position on the drill string while the drill string is still moving.

Abstract: A drill head of a ground drilling device includes a drill bit and an attachment which can be fastened to the drill bit, wherein at least one dowel pin is provided for holding the attachment on the drill bit, and the drill bit has one or more receptacles for a dowel pin, wherein the receptacle is enlarged with respect to the radius of the dowel pin.

Abstract: The invention relates to a rod section of a ground drilling rod, wherein the rod section is configured at the end to form a plug connection and has (a) a male connector or (b) a female connector at at least one end, wherein the male connector has at least one circular portion and at least one more straight-line-like portion in cross section on the outside, or the female connector has at least one circular portion and at least one more straight-line-like portion in cross section on the inside.

Abstract: A drive of a ground drilling device for pushing or pulling introduction of a drill string with a frame and a slide that can be moved back and forth relative to the frame, wherein there is at least one hydraulic cylinder between the frame and the slide for moving the slide, and wherein the hydraulic cylinder can be arranged in a removable manner in two different working directions between the frame and the slide.

Abstract: Arrangement of a ground drilling device for the pushing or pulling introduction of a drill string into the ground, wherein the arrangement has a frame and a carriage which can be moved back and forth relative to the frame with a translatory movement, wherein at least one rolling element is provided, which is configured to roll during the translatory movement of the carriage, and a conversion device is provided, which is connected to the rolling element and is configured to convert the rotary movement of the rolling element into a rotary movement of the drill string.

Abstract: 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.

Abstract: A drilling head for a percussive displacement ground drilling device with a first drilling head section and a second drilling head section, the first drilling head section having discharge ducts, and the second drilling head section having a cross section that increases in the longitudinal direction, wherein the second drilling head section includes a plurality of step-shaped areas.

Abstract: A system comprising a ground drilling device with a control device, the system including an input device functionally coupled to the control device for entering at least one parameter for operating the ground drilling device. The at least one parameter may include a parameter that causes the ground drilling device to start drilling. The input device may be configured as a remote control with a feedback device, which outputs a variable that a user can perceive i) tactilely, ii) visually, and/or iii) auditorily, and that depends on a) the operation of the ground drilling device, b) the operating state of the ground drilling device, and/or c) the signal of a detection device.

Abstract: A controllable drilling head for a drill string for ground drilling with a drilling head tip and a locating pin that carries the drilling head tip, the drilling head tip having a bore slanted to the longitudinal axis and the locating pin being angled to the longitudinal axis, wherein the drilling head tip can rotate on the locating pin, the drilling head tip and the locating pin being arranged in a first angular position relative to one another for straight drilling, and the drilling head tip and the locating pin being arranged in a second angular position relative to one another for drilling that deviates from straight drilling.

Abstract: A rod section of a ground drilling rod configured at its end to form at least one plug connection and having at one end (a) a connecting plug with an outer contour; or (b) a connecting socket with an inner contour, the outer contour or the inner contour being essentially sinusoidal in cross section.

Abstract: A system comprising a ground drilling device with a control device, the system including an input device functionally coupled to the control device for entering at least one parameter for operating the ground drilling device. The at least one parameter may include a parameter that causes the ground drilling device to start drilling. The input device may be configured as a remote control with a feedback device, which outputs a variable that a user can perceive i) tactilely, ii) visually, and/or iii) auditorily, and that depends on a) the operation of the ground drilling device, b) the operating state of the ground drilling device, and/or c) the signal of a detection device.

Abstract: A percussion boring device comprising a casing, a guide tube fixed to the casing, and a control bushing axially displaceable on the guide tube. An impact piston of the device is axially displaceable on the control bushing and configured to be actuated in a reciprocating manner within the casing such that in a first switching position the impact piston strikes a front impact surface to actuate the percussion boring device in a first movement direction, and in a second switching position a rear impact surface to actuate the percussion boring device in a second movement direction. A pressure increasing means is provided and configured to generate a pressure for reversing the percussion bore device, wherein the generated pressure is higher than a pressure for moving the impact piston. The guide tube and the control bushing are configured to reverse movement directions of the impact piston.