Abstract: An enhanced housing for portable power tools provides a magazine for accessories and consumables which conveniently holds screws, rapidly interchangeable screw bits, drill bits, and other light tools substantially on the power tool itself. A magnetic field generating module attached to, attachable, or integrated with a battery charger, a removable battery, or a handholdable powered drill or driver whereby one hand may support the power tool, various screws, screw bits, and drill bits while the other hand places or replaces screws, the screw bits, or drill bits without requiring a reachable shelf, table, garment, or pocket.

Abstract: It is an object of the invention to provide a technique which contributes to reduced size of a vibration-proof handle for a hand-held power tool. A representative hand-held power tool includes a power tool body 103 having a tip end region to which a tool bit 119 can be coupled, and a handle 109 arranged on the rear of the power tool body 103 on the side opposite to the tool bit 119 and designed to be held by a user. The handle 109 is connected to the power tool body 103 via elastic elements 181, 183 and can slide with respect to the power tool body 103 in an axial direction of the tool bit 119. The power tool body 103 has an extending region 105b that extends to a lower region of the handle 109 and receives the sliding movement of the handle 109.

Abstract: The present invention is directed toward a shield assembly for a handheld tool device such as an angle grinder. The shield assembly is selectively repositionable with respect to the cutting tool. A lock mechanism secures the shield assembly in discrete rotational positions relative to the cutting tool. The shield assembly includes a guard member and a bumper member, and an alignment feature configured to align the relative positions of guard member and the bumper member, thereby positing the members in a predetermined relative orientation. With this configuration, the shield assembly is selectively repositionable via a “hands-free” mechanism that permits a user to adjust the position of the shield assembly by simply contacting the shield assembly against a work surface.

Abstract: The invention concerns a driving tool comprising a rotating motor (16), in particular, an electric motor, a gas spring (8) with an elastically compressible gas volume (9), and a firing piston (5), wherein the gas spring (8) can be tensioned via a tensioning device (10) with the motor, so as to accelerate after a release from the tensioned state the firing piston (5) in a firing direction, wherein at least one part of the tensioning device (10) is located within the gas volume of the tensioning spring.

Abstract: A wireless small motor driver, in which power consumption is decreased by adjusting a gear ratio, the efficiency of an operation is increased due to a high torque, and the safety of a worker at night is ensured using an illumination lamp. The wireless small motor driver includes a driver case inside of which a motor is provided. A driver bit has a predetermined length in a bilateral direction, the driver bit being replaceable, with one or both ends thereof conforming to the shape of a bolt, and has a fixing projection. A socket is coupled to an end portion of the driver case, the driver bit being fastened to the socket. A rotation reduction gear is coupled to the motor, the rotation reduction gear transmitting rotary force to the socket and increasing a torque. A USB and a battery for supplying uniform power to the motor are added.

Abstract: A system includes a power tool having a motor, a drive mechanism mechanically coupled to the motor, and an output element mechanically coupled to the drive mechanism. The motor is operable to drive the drive mechanism and the output element. The system also includes a non-motorized sensing tool having a printed circuit board and a sensing element electrically coupled to the printed circuit board. The sensing element is operable to detect an external characteristic and output a signal to the circuit board. The circuit board is operable to condition the signal into a human-comprehensible form. The system further includes a rechargeable battery pack removably and independently coupled to the power tool and the non-motorized sensing tool. The battery pack is operable to power the motor to drive the drive mechanism and the output element when connected to the power tool, and is operable to power the circuit board and the sensing element when connected to the non-motorized sensing tool.

Abstract: An add-on handle connectable to a handheld power tool, including a fastener attachable to a connection area, a hoop-shaped grip for handling purposes, and a locking coupler connecting the grip and the fastener. By rotating the grip, the locking coupler can be moved between an attachment position and a detachment position, the locking coupler having a first coupling part actuatable via the grip and a second coupling part configured to change the position of the fastening element. The first and second coupling parts engage axially with each other, forming a bayonet catch of the locking coupler between the coupling parts. The bayonet catch has an engagement element movable so as to engage with a guide so that, when the engagement element is moved between a first point of the guide and a second point of the guide, the fastener is moved between the attaching position and the detaching position.

Abstract: A rock claw is provided for a demolition hammer. The rock claw may be a separate component attachable to the external surface of the hammer housing. The rock claw may include a first portion with a first distal end and a first proximal end and a second portion with a second distal end and a second proximal end. The first proximal end is joined to the second proximal end to form an elbow and the second distal end having a first leg spaced apart from a second leg.

Abstract: A device (3) for guiding a power tool (2) along an advancing direction (15), including a baseplate (9) that can be fastened to a substrate (8) by a fastener, of a guide rail section (21) that can be joined to the baseplate (9) by a joining mechanism (12) and that has a contour (18), and a guide carriage (13) for guiding the power tool (2) along the advancing direction (15), whereby the guide carriage (13) has a counter-contour (19) that can be made to engage with the contour (18), whereby a second guide rail section (22) is provided that can be joined to the first guide rail section (21) and that is configured so that it can rotate relative to the first guide rail section (21) around a rotational axis (23) that is parallel to the advancing direction (15).

Abstract: A hand-held power tool is provided with a housing comprising two separate and interconnected housing parts, one of which is designed as a handle part for holding and guiding the hand-held power tool. At least one housing part is associated with a vibration reduction element designed as a spring element. The vibration reduction element is arranged in an intermediate space between the handle part and the other housing part.

Abstract: The invention relates to portable electric apparatuses of the kind including a tool driven by an electric motor, and a battery supplying the electric power necessary for the operation of said tool, characterised in that said portable electric apparatuses include a communication system enabling, on the one hand, the exchange of information relative to the type, the state and the operation of the tool and of the battery when connected together and, on the other hand, the adjusting if need be of the operation parameters of said tool based on the characteristics of said battery and/or the operation parameters of the battery based on the operation parameters of said tool.

Abstract: An apparatus for reclaiming insertable electrical components includes a lid, a container base, and a seal. The container base includes a container bottom and sidewalls. The container bottom further includes a recess that is defined by a recess bottom and recess sidewalls and is sized and configured to receive an insertable electrical component. The lid includes at least one boss to restrain the movement of a portion of the insertable electrical component when the insertable electrical component is inserted into the recess of the container base and the lid is attached to the container base. The boss may include a boss contact attached to the boss, and the boss contact may be electrically coupled to a discharge device or to an exterior contact.

Abstract: A suspending attachment attached to a cylindrical housing of an electric power tool whose output shaft protrudes from a housing distal end includes a ring-shaped distal end portion fitted to the housing distal end, lower retaining portions of which front ends are connected to the distal end portion and extending rearward along a housing lower-half outer surface with a space through which the housing does not radially come off, one upper retaining portion of which a front end is connected to the distal end portion and extending rearward along a housing upper-half outer surface with a space from each lower retaining portion, through which the housing does not come off, a hook portion extending from at least one of rear ends of the lower and upper retaining portions rearward of the housing, and a connecting member coupling the lower and upper retaining portions over a housing rear surface.

Abstract: An electric tool includes a gripping portion, a working portion rotatably connected to the gripping portion about an axis, an output shaft moving in a reciprocating manner and accommodated in the working portion, and a gear box accommodated in the gripping portion for driving the output shaft. The gear box has an opening so that the output shaft is moveable from one end to the other end of the opening when the working portion is rotated relative to the gripping portion about the axis. A leakage-preventing device, such as a bushing, is arranged at the opening so that the lubricating grease can be avoided from leaking.

Abstract: A portable handheld power tool (1), such as a chain saw or a power drill, having a receiving device (100) arranged on a body portion (2) of the power tool (1). The receiving device (100) is arranged for connecting/disconnecting to the portable handheld power tool (1) either a flexible elongated member, such as a rope, or a fastening device secured to the elongated member or to an operator of the portable handheld power tool (1). The receiving device (100) has a receiving portion (110) for receiving and leading the flexible elongated member therethrough. The receiving portion (100) extends substantially in a plane (P). Furthermore, the receiving device (100) has an attachment portion (120) which is arranged to connect the receiving device (100) to a body portion (2) of the portable handheld power tool (1) by means of a pivot assembly (4).

Abstract: Interactive tools and methods are provided. A particular interactive tool set includes a portable handheld tool and an alignment tool. The portable handheld tool includes a selective drive system. When the selective drive system is engaged, the portable handheld tool is operable perform a function and, when the selective drive system is not engaged, the portable handheld tool is not operable to perform the function. The alignment tool is physically separate and distinct from the portable handheld tool. The selective drive system engages in response to an indication of an aligned state of the alignment tool.

Abstract: A machining system that includes an ultrasonic machining assembly, wherein the ultrasonic machining assembly further includes a machining tool; a collet adapted to receive the machining tool; and an ultrasonic transducer, wherein the ultrasonic transducer is operative to transmit acoustical vibrations to the machining tool; and a machining apparatus, wherein the machining apparatus is adapted to receive and secure the ultrasonic machining assembly, and wherein the machining apparatus is operative to transmit torque to the machining tool by applying rotary motion to the ultrasonic machining assembly.

Abstract: Disclosed is a drilling and/or striking hammer that includes a lubricating device having a lubricant reservoir and a volume of lubricant contained therein. The lubricating device conveys lubricant to at least one a transmission system within the hammer's housing, a percussion system, and/or a tool holder at a variable dosing or flow rate. The dosing or flow rate varies as a function of tool stress which can include use intensity and/or temperature. A flexible tube extends between the reservoir and the lubricated component(s). At lease part of the flexible tube vibrates with the lubricated components during use and modifies a viscosity of the lubricant therein, based on tool use intensity. A pressure generating device can pressurize the lubricant, helping convey the lubricant to a targeted area for lubricating movable parts.

Abstract: A compact battery pack with high handling ability and restraining degradation of battery cells. The battery pack includes an insertion portion to be inserted into a handle portion of a cordless power tool and an accommodation portion in which all battery cells are accommodatable. A protection board with a protection circuit that protects batteries against overcharge and over-discharge is installed in the insertion portion. A switching element is connected between the battery cells and a drive motor of the power tool. An air passage in communication with the battery pack is formed within the handle and a main housing of the cordless power tool. The switching element is positioned at the air passage.

Abstract: An electric power tool includes a tool element, an electric motor, a rechargeable battery, a fuel battery, a state measuring unit, and a control unit. The electric motor receives power supply to drive the tool element. The rechargeable battery is electrically connected to the electric motor and supplies power to the electric motor. The fuel battery is electrically connected to the rechargeable battery and charges the rechargeable battery. The state measuring unit measures a state of the rechargeable battery. The control unit controls charging of the rechargeable battery by the fuel battery at least based on the state of the rechargeable battery measured by the state measuring unit.

Abstract: A robot for machining a part of structure under water, comprising a machine tool having a chamber receiving a machining element, a support and guiding structure of the machine tool fixable with respect to the part to be machined and having submersible mobile elements and corresponding submersible guiding elements defining axes along which the mobile elements are movable to position the machine tool with respect to the part to be machined, displacement units for displacement of the mobile elements along the axes, a gas supply connecting to the machine tool to inject gas in the chamber, and a programmable control unit for operating the displacement units and the machine tool based on a closed-loop control mode in order to achieve the machining of the part.

Abstract: An electric power tool is powered by a plurality of battery packs connected in series. The electric power tool comprises a controller configured to receive signals outputted from the integrated circuits located in each of the battery packs. A first voltage level-shifter is disposed between the controller of the electric power tool and one of the integrated circuits of the battery packs. The first voltage level-shifter is configured to shift the voltage level of the signal outputted from the respective integrated circuit to the tool controller to an acceptable level for the controller.

Abstract: An implement has an internal combustion engine and a hydraulic system that can be driven by the internal combustion engine for bringing about a working movement. Furthermore, an energy accumulator is provided for the storage of energy in an accumulation phase in which the output delivered by the internal combustion engine is greater than the output currently required by the hydraulic system, and for the delivery of energy in a discharge phase in which the output delivered by the internal combustion engine is smaller than the output currently required by the hydraulic system. The energy accumulator thus serves for balancing output peaks and valleys such that the internal combustion engine may always be operated within an optimum range of rotational speeds.

Abstract: A modified power tool which includes a housing, a motive source disposed at least partially within the housing, a rigid and curved extension extending from the housing, a flexible shaft extending through the extension, and a connector

Abstract: An adapter for a power tool is disclosed which comprises a drive shaft that can be connected to an output shaft of the power tool in a rotationally fixed manner. There is a receiving connector on the power tool. On the adapter there is provided an assigned sleeve that can be pushed onto the receiving connector, and which comprises a clamping ring, which acts together with locking members in order to effect locking of the sleeve on the receiving connector when in a closed position, the clamping ring being held so as to be movable in the axial direction and being preloaded in the direction of the closed position. The locking members act together with the clamping ring in such a way that locking is effected automatically in the closed position when the adapter is pushed onto the power tool as far as the closed position, and a release of the adapter from the closed position can be effected through an axial movement of the clamping ring against its preload.

Abstract: This invention relates to a power tool, an accessory and a power tool and accessory system. The power tool includes a tool body and a rotatable driven member extending forward from the tool body for gripping and rotating a working element about an axis of rotation. The power tool also includes a cover surrounding the driven member having opposite rearward and forward ends with the rearward end being directly connected to the tool body so that the cover does not to rotate with the driven member. The cover includes at least one accessory attachment facility configured to facilitate releasable attachment of an accessory to the cover between the rearward and forward ends along the direction of the axis of rotation of the driven member. The power tool accessory includes at least one power tool attachment facility configured to facilitate releasable attachment of the accessory to the cover between the rearward and forward ends along the direction of the axis of rotation of the driven member.

Abstract: An auto hammer includes a housing, a head assembly arranged on one end of the housing, a battery pack mounted at the other end of the housing, and a motor contained in the housing. The housing further includes a grip portion, where the gravity center of the auto hammer lies. The auto hammer is thereby more ergonomic so that the users feel more comfortable when holding the auto hammer and spend less effort during its operation.

Abstract: An auto hammer having a housing having a grip portion defining a central axis and a head assembly including a striking device which has a striking rod defining a central axis. The striking device is pivotable relative to the grip portion and the angle between the central axis of the grip and the central axis of the striking rod can range between 60° and 180°. The auto hammer thus provides a pivotable striking device and is thereby suitable for different working circumstances.

Abstract: A screw driving machine includes a bit that is movable to strike a screw against a workpiece and rotatable to rotate the screw to the workpiece, a combustion-type power mechanism including a spark plug that ignites combustible gas filled in a combustion chamber to apply striking force to cause the bit to strike the screw, a motor that generates a rotative force when supplied with electric force, and a power transmission mechanism that transmits the rotative force generated at the motor to the bit to cause the bit to rotate.

Abstract: It is an object of the invention to provide a power tool that effectively prevents leakage of lubricant while regulating the internal pressure of a housing space for a driving mechanism. The object can be achieved by a representative power tool that includes a too bit 119, a driving mechanism 113, 115, an enclosed housing space 107a which houses the driving mechanism and in which lubricant is sealed in, and a path 151 which regulates pressure of the housing space 107a. On the path, a filter chamber 154 having a predetermined capacity, an inner passage 155c that communicates the filter chamber 154 with the housing space 107a, and an outer passage 159c that communicates the filter chamber 154 with the outside are formed. A filter 157 is disposed in the filter chamber 154 and spaced apart from a peripheral edge of an opening of the outer passage 159c which is open to the filter chamber 154, so that a space 161 is created on the opening edge side of the filter chamber 154.

Abstract: An electric power tool can include a main body, which rotates a motor with a pull operation of the switch lever and actuates a head tool by a rotative force of the motor, and an auxiliary tool configured for attaching and detaching to and from the electric power tool main body. In the main body, an actuating part actuated with the pull operation of the switch lever is provided. The auxiliary tool includes a detecting part, which noncontactly detects an actuation of the actuating part, and an electric circuit section for actuating electric devices, provided in the auxiliary part, by a detecting actuation of the detecting part.

Abstract: The invention relates to a hand-held power tool having a drive motor and a striking mechanism for the rotating or impact drive of a tool, which is accommodated in a tool holder. A transmission gearing and a torque clutch are disposed in the transmission path between the drive motor and the tool holder in order to limit the transferable torque. A threshold torque can be set in the torque clutch.

Abstract: A power tool with a motor, a transmission and a rotary impact mechanism. The transmission receives rotary power from the motor and includes a transmission output member. The rotary impact mechanism has a first spindle, a second spindle, a hammer and an anvil. The second spindle is disposed coaxially with the first spindle and the hammer is drivingly coupled to the second spindle. The power tool also includes a device that selectively couples the first and second spindles with the anvil and the transmission output member. Coupling of the first spindle with the anvil and the transmission output member directly drives the anvil, whereas coupling of the second spindle with the anvil and the transmission output member drives the anvil through the hammer.

Abstract: The present invention is directed generally to a system and method which employ a compressed gas-driven device with a passive thermodynamic composition. Certain embodiments provide a compressed gas-driven (e.g., CO2-driven) device implementation that includes a passive thermodynamic composition which allows for extended use of the device without freezing and without requiring a persistently-maintained, active (e.g., electrically-powered) heating. Further, certain embodiments provide a compressed gas-driven (e.g., CO2-driven) device implementation that includes a passive thermodynamic composition which allows for extended use of the device without freezing and without requiring an ignition heat source (e.g., electrically-powered or pyrotechnic as generator) for heating the device.

Abstract: The present invention is directed generally to a system and method which employ a compressed gas-driven device with a passive thermodynamic composition. Certain embodiments provide a compressed gas-driven (e.g., CO2-driven) device implementation that includes a passive thermodynamic composition which allows for extended use of the device without freezing and without requiring a persistently-maintained, active (e.g., electrically-powered) heating. Further, certain embodiments provide a compressed gas-driven (e.g., CO2-driven) device implementation that includes a passive thermodynamic composition which allows for extended use of the device without freezing and without requiring an ignition heat source (e.g., electrically-powered or pyrotechnic as generator) for heating the device.

Abstract: An electrical power tool includes a housing, an electrical motor, an end-bit holding section, a transmitting mechanism, a cap, and a lighting section. The housing has one end. The electrical motor is accommodated in the housing and is configured to generate a rotational driving force. The end-bit holding section is provided at the one end and is rotatable about a rotational axis. The transmitting mechanism transmits the rotational driving force to the end-bit holding section. The cap is attached to the one end. The lighting section allows an entirety of the cap to be luminous.

Abstract: A crust breaker and ore feeder device for electrolytic aluminum smelting employs an in-line three-position pneumatic cylinder capable of moving the plunger shaft to a fully raised position, to a fully lowered position, and to an intermediate, partly lowered position. The full stroke is used for a conventional combined ore dispensing and a crust breaking operation; a partial stroke between the fully raised position and the intermediate position permits ore dispensing without a crust breaking; and a partial stroke between the intermediate position and the fully lowered position permits crust breaking operation without ore feeding. The cylinder can take form of a tandem cylinder having upper and lower axially aligned cylinder portions, with rods not connected to one another.

Abstract: A power system comprises: a power unit; a portable electrical tool having a power line, which is electrically connected to the power unit; a power-store device being electrically connected to the power unit; wherein the power unit provides power to the portable electrical tool and the power-store device, the power-store device stores the power simultaneously, so that the power-store device provides the power to the portable electrical tool while in the condition of the power line being not connected to the power unit, such as outdoor works.

Abstract: An electrical hand-held power tool includes an outer housing (12) in which there are located a percussion mechanism (18), a motor (16) for driving the percussion mechanism (18), a gear unit (17) for connecting the motor (16) with the percussion mechanism (18), a control electronics (19) for controlling operation of the power tool (11), and a closed cooling circuit (21) for cooling medium for cooling above-listed components of the power tool (11). A heat exchanger (26), which is fixedly connected with the power tool (11), is arranged in the cooling circuit (21) for cooling the cooling medium.

Abstract: Accessories for power tools and combinations are provided. An accessory for a power tool may include a body including a connecting portion for connecting the accessory to the power tool and a communication member positioned on the body for communicating with the power tool. The accessory may be capable of communicating with a power tool and an inventory system via the communication member. A combination may include a power tool including a housing and a motor supported by the housing, and a power tool accessory connectable to the power tool and driveable by the motor, the power tool accessory may communicate with the power tool for affecting operation of the power tool. A combination may include an indication device operable to indicate operation characteristics of the power tool to a user. The communication member may be operable to communicate with the indication device.

Abstract: A handheld power tool has a tool holder, which is received displaceably in a housing and is drivable via a drive unit that can be switched on and off upon an axial adjusting motion of the tool holder. A lighting unit on the handheld power tool can be switched on and/or off via the adjusting motion of the tool holder.

Abstract: A pistol grip drill (1) has two control triggers (3 and 9) on its hand grip (4). One trigger (3) controls power to a motor in a casing (2) of the drill and the other trigger (9) initiates a sequence which interchanges the positions of two chucks (20, 21). The chucks (20, 21) are mounted on a forward extension (8) of the casing (2). The extension (8) has two degrees of freedom. It is firstly capable of rotating through ninety degrees about the axis of a pivot (14) to bring the unused chuck to the driving position in front of the casing (2). The second degree of freedom allows the extension to be then rotated about the driving axis of a drill drive shaft (5) so that the displaced chuck is moved from an upwardly-pointing position to a downwardly position directly in front of the pistol grip. The interchanging of the chucks (20, 21) can be controlled by the hand of the user holding the hand grip (4).

Abstract: An electric drill (10) has a drive assembly (31, 70), and a pivot head (32) having first and second bit gripping assemblies (14, 22) disposed at 90 degrees to each other. The electric drill (10) also includes means for adjusting the position of the bit gripping assemblies (14, 22) relative to the drive assembly (31, 70) by pivoting the head (32) through 90 degrees, whereby a selected one of the bit gripping assemblies is operatively engaged to the drive assembly. The position adjusting means may include a movable locking sleeve (36) which, in a first position, allows the drive assembly to operatively engage the selected bit gripping assembly and, in a second position, allows the drive assembly to disengage the selected bit gripping assembly.

Abstract: The invention relates to a coupling device for drill rods comprising a receiving socket for receiving a connecting portion of the drill rod. Provision is made for at least one locking device with a locking element, which is supported in an adjustable manner between a release position and a locking position, in which the locking element engages into a corresponding recess of the connecting portion.

Abstract: As system for clamping an rotary tool accessory disc or blade to an output shaft of a rotary tool comprising a cam clamping mechanism and a clutch assembly wherein the cam clamping mechanism comprises: a head element threadably engageable with the output shaft at a location axially outward of the accessory disc; a cam rotatably connected to the head element and rotatable between a clamped and unclamped position, wherein the clamped position the cam exerts a compression force axially inward against the accessory disc or blade; and wherein the clutch assembly comprises: at least one first type of disc located coaxially on and keyed to the output shaft; at least one second type of disc located coaxially on the output shaft and in planar parallel contact with the first type disc; and an inner washer having an internal bore, the inner washer located coaxially on the output shaft, axially outward of and surrounding the first type disc and the second type disc, the inner washer keyed at the internal bore to the seco

Abstract: An electric fence post installer comprising a wheeled frame having a first upstanding support extending upwardly therefrom. A generally horizontally disposed boom arm is rotatably mounted on the upper end of the first support and has a carousel support secured to the outer end thereof. A carousel is rotatably mounted, about a vertical axis, on the carousel support and is adapted to have a plurality of vertically disposed and radially spaced-apart electric fence posts supported thereon. A vertically disposed drill is mounted on the carousel support and is adapted to be rotated and moved downwardly with respect to the carousel support to drill a post hole in the ground. After the post hole has been drilled, a fence post is moved from the carousel to a position over the post hole and then is forced downwardly into the post hole. The installer includes means for ensuring that the post hole will be drilled substantially vertically into the ground.

Abstract: A post driving apparatus includes a chassis having a longitudinal axis and a frame carried by the chassis. The frame includes an upper support member having an axis of elongation substantially perpendicular to the longitudinal axis of the chassis. A post magazine is indexingly supported by the frame and, a post driving assembly is suspended from a portion of the upper support member for reversible travel therealong so as to laterally position the post driving assembly from the chassis. The post driving assembly includes a post driver adapted to retain a post supplied from the post magazine, the post driver adapted to continuously drive such post.

Abstract: The present invention provides a portable pulling apparatus suitable for mounting in an exit pit during installation of a pipeline. A portable pulling apparatus of the invention includes an elongated stake having a lower end portion configured for insertion into the ground and an upper end portion. A winch including a pulling cable is mounted on the upper end portion of the stake by a suitable fixture. The winch can then operate to exert a horizontal pulling force on a cable and is secured against movement when the lower end portion of the stake is inserted into the ground. Such a pulling apparatus can be used in a method of installing an underground pipe according to the invention.

Abstract: A method in or relating to piling of e.g. tubular bases which are placed and, possibly, casted within a hole drilled out in earth mass in ground or the like is described. One uses a generally known drilling rig, in which a bit is assigned a drilling hammer, and drills a hold having a depth approximately corresponding to the base pipe. If there exists a need for piling, the drill string is swung aside, away from the hole, after having been pulled up, and one or, possibly, a plurality of piles is/are rammed down with a starting point at the bottom level of the bore hole. In order to drive the pile(s) down, the drilling hammer of the drilling rig is used.

Abstract: A mobile drilling apparatus has a front chassis with two wheels, and a rear chassis with two wheels, which are joined together by an intermediate articulation about a vertical axis. To improve the lateral stability when turning, the front chassis is extended backward behind the intermediate axis of articulation and above a portion of the rear chassis. The front chassis thus extends support, in addition to the drilling arm or arms and the driving and work station of some of the electrical and/or hydraulic equipment of the apparatus. In a converse arrangement, the rear chassis is extended forward, in front of the axis of articulation and over a portion of the front chassis.