Abstract: The present invention concerns a spinal cage hammer including an elongated body comprising a proximal end and a distal end, the elongated body extending from the proximal end to the distal end and defining a cavity extending from the proximal end to the distal end, the at least one cavity being configured to receive at least one portion of a spinal cage holder for holding a spinal cage. The spinal cage hammer includes an interface wall or surface configured to enter into contact with the spinal cage holder to transfer a force to the spinal cage holder.

Abstract: An impact wrench is provided with a battery to power the motor. The impact wrench provides improved portability since the impact wrench does not need to be connected to an electrical extension cord or a pneumatic hose. The output drive, motor, batteries and main handle may be aligned along the axial direction of the tool. The batteries may be located between the motor and the main handle.

Abstract: The present invention discloses a multi-purpose pike pole firefighting tool. The pike pole comprises a blade, a square shaft, an elongated handle member, a handle and an elongated tubular member. The blade of the pike pole is welded to the square shaft. The square shaft is disposed with in the elongated handle member and configured to move up and down within the elongated handle member. One end of the elongated tubular member is coupled to the elongated handle member by threading assembly via a connection sleeve and another end is coupled to one side of a receiver or cap and the handle is fastened to another side of the receiver. The pike pole uses a manually driven by a piston action or a hammer action to assist a user to remove wood shiplaps/walls of the fired structures for checking fire extension by opening walls and ceilings during firefighting operations.

Abstract: A power tool contains a brushless motor that includes a stator having a stack thickness and an outer diameter, a rotor having a diameter, and a motor shaft extending from the rotor and having a rotational axis. A drive mechanism is operably coupled to the motor shaft and is configured to drive a tool accessory in relation to a drive axis. A first housing houses the motor and the drive mechanism. The drive axis does not intersect the brushless motor, but the rotational axis of the motor shaft intersects the drive axis. The outer diameter of the stator is at least five times greater than the stack thickness. Furthermore, the diameter of the rotor is greater than the stack thickness.

Abstract: A power tool includes a motor, an output shaft and a gearbox assembly. The output shaft outputs torque when driven by the motor to rotate around a first axis. The gearbox assembly transmits power between the motor and the output shaft. The gearbox assembly includes a first case and a second case. The first case and the second case are configured to be coupled to each other to form an accommodating cavity. The gearbox assembly further includes a ring gear, a planet gear, a sun gear, and a front ring gear. The ring gear is rotatably disposed in the accommodating cavity. The planet gear is engaged with the ring gear. The sun gear is engaged with the planet gear.

Abstract: A rotatable fastening device disclosed in the present disclosure includes a rotating seat and an impact element. The impact element is one-way pivoted at the rotating seat. The rotating seat is rotated along a rotation axis and detachably connected between a driving tool and an element to be rotated. The weight and kinetic energy of the impact element will provide a one-way tangential impact force around the rotation axis with of rotation.

Abstract: A horizontal pipe ramming system includes a hydraulic crowd system. A hydraulic percussive hammer is mounted on a carriage that is urged forward by hydraulic cylinders acting between the carriage and an abutment. The continuity of crowd is enhanced by a compressive resilient assembly that releases its energy to the hammer to keep it in contact with the pipe after impact.

Abstract: A surgical apparatus including a tool assembly is provided. The tool assembly includes a chip assembly, a staple cartridge body, a support plate, and a jaw member. The chip assembly includes a first projection facilitating alignment and connection with a connector assembly of the jaw. The chip assembly further includes a second projection received in a recess in the staple cartridge body. The connector assembly and chip assembly include an electrical connection therebetween.

Abstract: A support for an underwater pipeline, in particular configured to elevate an underwater pipeline on a bed of a body of water, with a connecting frame configured to fit to a portion of underwater pipeline extending along a longitudinal axis; and at least two legs, which are hinged to the connecting frame, and movable between a contracted configuration and an extended configuration in which they extend crosswise to the underwater pipeline to rest on the bed of the body of water.

Abstract: A support post structure comprising an elongated impact drive tube having a longitudinally extending bore open at a distal end of the tube, an elongated stake member having a guide section slidably mounted within the bore and further having a ground penetrating elongated head section extending longitudinally outward from the distal end of the drive tube, wherein the head section in cross-section has a channel configuration with a web base and parallel upstanding side walls, the head section has a driven lateral shoulder adapted for being downwardly impacted by the distal end of the tube on the down stroke of the tube, and wherein the head section is wedge shaped with the point of the wedge on the distal end of the web base and with the lateral driven shoulder on upper portions of the channel sides at a proximal end of the head section.

Abstract: A hammer tool assembly for a machine is provided. A hammer tool assembly includes a power cell, a tool and a frame assembly. The frame assembly includes a first side plate and a second side plate. The hammer tool assembly includes a flange member extending from an outer periphery of an outer wall of the first and second side plates. The flange member includes a plurality of serrations that extend from the outer periphery of the outer wall of at least one of the first and second side plates. The hammer tool assembly also includes a plurality of blocks provided in surrounding contact with the power cell and an inner wall of the first and second side plates respectively.

Abstract: A percussion adapter that is driven to generate a percussive axial motion on a wellbore structure. One percussion adapter includes a drive connection to mechanically convert rotational drive to axially directed percussive motion. Another percussion adapter employs a valve that creates back pressure causing axially directed percussive motion. A wellbore tubular connection that transitions torque to resist back off when left hand or right hand torque is applied.

Abstract: A drop test device includes a suspension frame, a delay roller which is placed and mounted on the suspension frame, and at least one suspension cable, a first end of which is connected in a stationary manner to an attachment point on the outer surface of the delay roller and a second end of which includes a mounting which can be releasably or fixedly connected to a drop object.

Abstract: An impacting device for inserting, positioning and/or removing an implant and/or performing other impacting applications. The impacting device may have a head having at least one recess. The recess may have a insertion channel and a locking chamber. In one embodiment, the insertion channel and the locking chamber may be connected by an axial channel. The recess may pass through a lateral surface of the head so that the base surface may remain cohesive or unobstructed. A guide means, such as a guide rod, may be positioned though the recess so that the head may be moveable on the guide means and not disengage the guide means. A shaft having a handle may be attached to the head to assist a surgeon in moving the head on the guide means.

Abstract: The invention relates to a percussion device comprising a percussion mechanism housing which has a receiving bore in which a percussion piston is mounted such that it is movable along the longitudinal axis, wherein at least one percussion mechanism guide surface having an inner diameter is formed in the receiving bore and at least one percussion piston guide surface having an outer diameter is formed on the percussion piston. In order to avoid radial contact between the percussion piston and the percussion mechanism housing as far as possible, to reduce the volume of oil leakage through the gap of the guide surface and to prevent wear on the guide surfaces and on the lands between the seals, according to the invention the percussion mechanism guide surface has, at least in some regions, an inner diameter that increases non-linearly in the axial direction and/or the percussion piston guide surface has an outer diameter that decreases non-linearly in the axial direction.

Abstract: The invention relates to a fuel-powered breaker machine (1) which has a cylinder (2, 2.3, 2.4) with two pistons (3, 4) disposed therein. The first of the pistons (3) is adapted to opening and closing at least an inlet aperture (5, 6) on an inlet side (I) in a cylinder shell wall (7), and an outlet aperture (8) on an opposite outlet side (O) in the cylinder shell wall (7), and, when the apertures (5, 6, 8) are closed, to compressing against the second piston (4), which acts as the working piston of the breaker machine (1), an ignitable air/fuel mixture which is admitted via the inlet aperture/apertures (5, 6).

Abstract: The design of the free-mass in an ultrasonic driller/corer (USDC) has been refined in order to improve the performance and operational reliability of the system. In one embodiment, the improvements in performance and operational reliability include decreasing the impact surface area of the free-mass to increase the transfer of impact energy from the piezoelectric transducer and reductions in the likelihood that the system will jam.

Abstract: A driver 10 for a fence post is disclosed. The driver comprises an elongate hollow body 12 having an open in-use lower end 14. A guide 16 is removably locatable at the lower end.

Abstract: A powered hammer includes a housing having a proximal end and a distal end. The distal end includes an opening for a tool to pass through. The powered hammer further includes a shroud member coupled to the housing and configured to surround an outer surface of the distal end of the housing. The shroud member includes an opening on a lower surface thereof. The opening is configured to allow the tool to pass through. The shroud member is made from a ceramic material with a layer of fiber glass disposed adjacent to the outer surface of the distal end of the housing. The shroud member is configured to reduce heat transfer to the housing from an ambient environment proximate the distal end of the housing.

Abstract: A tool has a mechanism for absorbing energy transmitted to a hand grip, comprising a support body, a handle, an elastic return member and an interchangeable head as a base unit which is capable of accommodating additional fittings depending on the specific application. A lower part of the cylindrical body has a shouldered part having a diameter larger than its upper part so as to allow positioning and support of a ring associated with the handle. The handle has an internal shouldered part with an upper face constituting the support for the elastic return member. The interchangeable striking head comprises a part centered in the ring and a neck that fits inside an internal bore of the body. The striking head rests directly on the body in order to transmit the entire striking force to the body, and the handle extends rearwardly as the hand grip.

Abstract: A ballistic battering ram device that uses gun powder to produce a striking force. The ballistic battering ram includes a hollow casing, a bolt piston housing housed within the hollow casing, a bolt housed within the bolt piston housing and configured to slide back and forth, and a firing pin attached to the bolt and configured to strike the primer on the explosive casing. When the user strikes the door with the ballistic battering ram a front plate makes contact with the door pushing the bolt piston housing towards a chamber piston. Simultaneously, a retention pin timing spring pushes against a retention pin withdrawing the retention pin from inside the hollow casing. This action may allow the chamber piston to move backwards after firing which may be important for recoil management.

Abstract: Methods, systems, and apparatuses for providing insulation for a wall panel, an embodiment of an insulated wall panel including a weather barrier, an insulating layer abutting the weather barrier, a moisture barrier abutting the insulating layer, and structural layer abutting the moisture barrier, and possibly a second insulating layer abutting the structural layer. The insulated wall panel may also include a plurality of nails, each nail having a head embedded in the insulating wall panel abutting the structural layer. A nail gun including a barrel with a toothed end or an end with an adjacent having a flat outer side may propel the nail into the insulating wall panel.

Abstract: A marker setter is described that includes a magazine holding a plurality of stacked planar markers, each marker having a flag section and a post section with a distal tip; a marker extractor adapted to extract a marker from the stacked plurality of markers and convey the marker along a pathway to insert the tip of the marker into the ground, the marker extractor having a post inserter with a distal end; and a tip deflector adapted to bend the marker distal tip around the post setter distal end prior to insertion of the tip into the ground. The tip deflector includes a deflector plate pivotal between an initial position in the pathway of the marker tip and post inserter, and a forward position beneath the pathway, the deflector being moved to the forward position by the post inserter while bending the marker tip around the post inserter distal end.

Abstract: A hand-held power tool device comprises an impact tool unit configured to generate a pulse on an insertion tool, and a sensor unit configured to detect at least one of at least one operating parameter, and at least one ambient parameter. The sensor unit includes at least one sensor element configured to detect a spatial position of the impact tool unit.

Abstract: A hand-held power tool device comprises an impact tool unit, an impact detection unit, and a blocking detection unit. The impact tool unit is configured to drive an insertion tool at least partially in at least one of a rotational fashion and a translatory fashion. The impact detection unit is configured to detect at least one impact parameter, such as linear acceleration running at least substantially parallel to a processing axis of the insertion tool. The blocking detection unit is configured to detect at least one blocking parameter, such as at least one an angular acceleration about the processing axis of the insertion tool. The impact detection unit and the blocking detection unit are formed at least partially as one-piece.

Abstract: The invention provides a novel jackhammer that utilizes ultrasonic and/or sonic vibrations as source of power. It is easy to operate and does not require extensive training, requiring substantially less physical capabilities from the user and thereby increasing the pool of potential operators. An important safety benefit is that it does not fracture resilient or compliant materials such as cable channels and conduits, tubing, plumbing, cabling and other embedded fixtures that may be encountered along the impact path. While the ultrasonic/sonic jackhammer of the invention is able to cut concrete and asphalt, it generates little back-propagated shocks or vibrations onto the mounting fixture, and can be operated from an automatic platform or robotic system.

Abstract: A dust collecting device is provided which is capable of preventing static charge while rationally collecting dust generated during operation. A dust collecting device is removably attached to a power tool and can be carried together with the power tool, and collects dust generated when a predetermined operation is performed on a workpiece by driving a tool bit coupled to the power tool. Further, the dust collecting device has a dust suction region that sucks dust generated during operation in response to the operation of the tool bit, a dust transfer region that transfers the dust sucked in the dust suction region, and a dust storage region that communicates with the dust transfer region and stores the dust. Furthermore, the dust collecting device has a grounding member through which static charge on the dust is dissipated.

Abstract: Various embodiments herein provide a remotely adjustable feed system for remotely controlling the movement of a tool head on a machining tool along an axis of motion by means of converting reciprocal linear motion, i.e., back and forth linear motion, into rotary motion. The rate of movement of the tool head along the axis of motion may be controlled by varying the distance of linear motion in each cycle of linear reciprocal motion and/or by varying the rate of linear reciprocal motion cycles per unit time. Alternatively, or in addition, the rate of movement of the tool head along the axis of motion may be controlled by varying the amount of rotary motion that results from a given amount of reciprocal linear motion. Additionally, in some embodiments, the movement of the tool head may be controlled by directly controlling the rotary motion that drives the tool head along the axis of motion.

Abstract: An enclosure for a power cell of a hydraulic hammer includes a single-piece hollow elongated body, a resilient cover, and multiple deformable plugs. The body includes a top flange, and an integrally formed polyhedral mid-portion. The mid-portion includes multiple sidewalls, and an end wall that is integral with a bottom end of the sidewalls. The sidewalls define a first sealing aperture, a second sealing aperture, and a pair of arcuate openings thereon. The resilient cover includes laterally disposed first and second portions that are configured to releasably engage with the body to cover a top portion and a bottom portion of the arcuate opening respectively. The deformable plugs are releasably engaged with the body at the first and second sealing apertures. The plugs include resilient members that co-operate with interfitting features located adjacent to the first and second sealing apertures of the body.

Abstract: Control device of an impact mechanism operable by a pressure media having an element for reversing the axial pressurization of the percussion piston and the return of the medium. In order to achieve a controllability of impact mechanisms by which the energy and the frequency of the moved percussion piston can be adjusted, at least one channel switchable by the reversal as a return line for the medium from the percussion hammer has at least one switchable element for the flow control.

Abstract: An impact driver includes a sleeve, a striking unit and a chuck. The sleeve includes a bore with an open end and a polygonal section near the open end. The striking unit can strike a bit partially inserted in the sleeve through the open end. The chuck includes a ring, a tube, a spring and a ball. The tube includes a polygonal section movably inserted in the polygonal section of the bore of the sleeve, a circular section extended through the ring, an annular rib formed thereon, a polygonal bore for receiving the bit, and at least one aperture in communication with the polygonal bore. The spring is compressed between the annular rib and the sleeve. The ball includes a portion placed in the aperture and another portion movable into the polygonal bore.

Abstract: A drilling tool 1 includes: an attaching portion 15 to which a tip tool is attached; and a housing for holding the attaching portion 15. An inclination sensor 16A for detecting inclination of the drilling tool 1 and an electronic substrate 16B supporting the inclination sensor 16A, which converts a result of the detection of the inclination sensor 16A into an electric signal, are provided inside the housing. A weight 16D is provided in the electronic substrate 16B. Oscillation generated in operation of the drilling tool 1 and transmitted to the inclination sensor 16A is reduced by the weight.

Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.

Abstract: A percussion mechanism apparatus, in particular for a rotary and/or demolition hammer, includes at least one striker, at least one percussion pin with at least one guide lug that faces the striker, and at least one movably mounted control disc arranged around the guide lug. The guide lug has at least one end that projects beyond the control disc in every operating state.

Abstract: A rotary hammer includes a motor, a spindle coupled to the motor for receiving torque from the motor, a piston at least partially received within the spindle for reciprocation therein, a striker received within the spindle for reciprocation in response to reciprocation of the piston, and an anvil received within the spindle and positioned between the striker and a tool bit. The rotary hammer also includes a retainer received within the spindle for selectively securing the striker in an idle position in which it is inhibited from reciprocating within the spindle, and an O-ring positioned between the retainer and the spindle. The O-ring is disposed around an outer peripheral surface of the anvil. The O-ring is compressible in response to the striker assuming the idle position. The compressed O-ring imparts a frictional force on the outer peripheral surface of the anvil to decelerate the anvil.

Abstract: A method and measuring device for determining the usage rate of a breaking hammer, and to a rock breaking device. The measuring device comprises a sensor for measuring a physical phenomenon caused by the operation of the percussion device. The measuring results are processed, and they are used to determine the start and end times of the operation of the percussion device. By means of a timing device, it is possible to determine the duration of an impact cycle which is added to a time counter. The durations of impact cycles added cumulatively to the time counter indicate the total percussion time of the breaking hammer. Impact pauses between impact cycles are also monitored, and pauses shorter than a predefined time limit are taken into account as part of the usage rate.

Abstract: There is disclosed a post extractor comprised in a post-pounder, the device having a length and a crosswise extraction hole. The hole may be sized to accept an exposed portion of the post and may have an engaging edge for engaging an exposed portion of the post. Methods of using the extractor to extract a post are also disclosed.

Abstract: A detachable head for ramming a pipe casing including an external ring having a first diameter, wherein the first diameter is operatively sized to enable the external ring to engage with an outer surface of the pipe casing, a reaction ring having a second diameter, wherein the second diameter is smaller than the first diameter, and operatively sized to enable the reaction ring to engage with a front surface of the pipe casing, an internal ring having a third diameter, wherein the third diameter is smaller than both the first and second diameters, and operatively sized to enable the external ring to engage with an inner surface of the pipe casing, and wherein the reaction ring is secured between the internal and external rings.

Abstract: A tool holder for a hand supported impacting machine, which tool holder is suitable for receiving a tool having a shank portion on which is formed a retaining collar. The tool holder includes a tubular main body for receiving the tool and at least one locking element moveably mounted with respect to the main body and having an engaging portion moveable between a radially inner locked position in which the engaging portion is engageable with the retaining collar of the tool and a radially outer unlocked position in which a tool can be inserted into or removed from the tool holder. The tool holder additionally comprises a manually actuable sleeve moveable between a locked position in which the locking elements are held in their locked position and an unlocked position in which the engaging portions of the locking elements are moveable to their unlocked position.

Abstract: A tamping tool is provided that allows elongated members to be driven into various materials. The tamping tool may be comprised of three elements: a body element, a flange, and a stem. The stem may be interconnected to the flange, which may be interconnected to the body element. The stem may be configured to translate a downward force applied thereto into a downward force applied to the body element. The body element is hollow such that an elongated member may at least partially fit within the tamping tool, and the force applied to the body element drives the elongated member into various materials.

Abstract: A Single Piezo-Actuator Rotary-Hammering (SPaRH) Drill includes a horn actuator having high power piezoelectric materials and a flexure pre-stress to increase the actuators effectiveness. The drill is a low mass, low power, compact coring drill measuring 20-cm high by 7-cm diameter and having a total weight of 2 kg including drive electronics. Using an average power of 50-Watts, the drill basalt is expected to cut basalt at a rate of 0.2 cm/min down to depth of 10-cm and create cuttings and an intact core. The drill is expected to operate under different environments including Martian ambient (6 Torr and down to ?50° C.), and liquid nitrogen temperatures (77 K) and low pressure (<<1 Torr) to simulate lunar polar and Europa conditions. Materials expected to be sampled include Kaolinite, Saddleback Basalt, Limestone, Volcanic Breccia, Siltstone, ice, permafrost and layered rocks with different hardness.

Abstract: A circular cylindrical striker member 2 for a drilling machine adapted to transfer kinetic energy to an impulse receiving member 4. The striker member has a diameter dmax, and includes a side surface 12 and an impulse surface (6). The striker member is adapted to transfer the kinetic energy to the impulse receiving member by a ring shaped active surface of the impulse surface, wherein the ring shaped active surface is concentric with regard to the cross section of the striker member, has a diameter dawhere da<dmax, and has a width wa that during the contact moment with the impulse receiving pan is less than 0.2dmax.

Abstract: The invention relates to a hand-held power tool having a bearing ring (19) inserted into a bearing receptacle (18), wherein the bearing receptacle (18) and the bearing ring (19) have recessed ring sectors (17) positioned relative to one another in an overlapping manner, of which the ring sector (17) of the bearing ring is configured by breaking out a circumferential section (22) of the bearing ring (19), which is defined by predetermined breaking points (20).

Abstract: A percussive augmenter bit includes a connection shaft for mounting the bit onto a rotary drill. In a first modality, an actuator percussively drives the bit, and an electric slip-ring provides power to the actuator while being rotated by the drill. Hammering action from the actuator and rotation from the drill are applied directly to material being drilled. In a second modality, a percussive augmenter includes an actuator that operates as a hammering mechanism that drives a free mass into the bit creating stress pulses that fracture material that is in contact with the bit.

Abstract: A hydraulic accumulator includes an accumulator housing defining a gas reservoir and a liquid volume. A flexible membrane is positioned within the accumulator housing and separates the gas reservoir and the liquid volume. A flow control screen defines a wall of the accumulator housing, has a screen thickness, and includes an exterior face opposing a membrane engagement face. A first slot is formed through the exterior face and has a first slot depth that is less than the screen thickness. A second slot is formed through the membrane engagement face and has a second slot depth that is less than the screen thickness. The first slot and the second slot intersect to fluidly connect an exterior of the accumulator housing with the liquid volume.

Abstract: In an impact driver including an impact mechanism for percussive driving of an output drive shaft on which is provided a tool receptacle for receiving an inserted tool, the tool receptacle is embodied as a clamping chuck, a permanent connection being embodied between the clamping chuck and the output drive shaft in order to prevent at least tool-free detachment of the clamping chuck from the output drive shaft.

Abstract: A fluid powered percussion tool 1 has a housing 2 with a supply channel for pressurized fluid 3, a percussion mechanism 4, a swing joint 5 arranged to carry the percussion mechanism 4 relative to the housing 2 at a point situated between the forward end A and the rear end B of the percussion mechanism 4, at least one elastically resilient element 6 arranged between the housing 2 and the percussion mechanism 4 at a distance from the swinging joint 5 and arranged to load the percussion mechanism 4 against a neutral position in the housing 2 and to absorb the vibrational movements of the percussion mechanism 4, and a flexible connection for pressurized fluid 7 for distribution of pressurized fluid from the supply channel for pressurized fluid 3 to the percussion mechanism 4. The elastically resilient element 6 includes a conical spring 8. The flexible connection for pressurized fluid 7 includes a hose 11.

Abstract: A transmission housing, in particular for a hammer drill and/or percussion hammer, for accommodating a percussion mechanism includes at least one housing part and at least one cover part adjacent to the housing part. The cover part is configured to close off the transmission housing in a direction opposite to a percussion direction.

Abstract: The cover is provided with engaging pieces that engage with a recessed groove provided on the outer peripheral surface of a hammer case and hold the cover on the hammer case to prevent the cover from being detached. The cover is also provided with bumper receiving portions extending from the front end of the cover and allowing the bumper to be externally attached to the cover, and engaging claws formed on the bumper receiving portions and engaging with engaged recessed portions formed on the inner peripheral surface of the bumper for holding the bumper to prevent the bumper from being detached from the cover. The cover with the bumper attached to the bumper receiving portions is provided to the hammer case.

Abstract: A nailer device is carried within a housing having a nozzle portion wherein the nozzle portion is connected with the housing via a head portion of the housing. The nozzle portion includes a sleeve, a fixing member, and a magnetic member located between the sleeve and the fixing member. The fixing member is mounted on the sleeve and the fixing member has a groove in which the magnetic member is arranged.