Abstract: An implement for loosening stuck connection elements includes a striker hammer with a connecting portion for connection to a percussion tool at one end, and a striking surface for imparting an impulsive stress at the other end; a counteracting body opposing the striker and having an abutment surface that faces towards the striking surface; a retainer for retaining the striker to the counteracting body, while keeping a predetermined minimum distance between the striking surface and the abutment surface (8), so adapted to accommodate at least one of the elements of a pair to be loosened. A combination of the implement with a percussion tool and/or a wrench.

Abstract: A starter tool for use with a rotatable tool. The starter tool includes a base having a mount adapted to connect to the rotatable tool and a chuck rotatably mounted on the base and adapted to hold a work bit. A punch mechanism operatively connected to the work bit and selectively providing an impact force on the work bit to drive the work bit toward a working surface.

Abstract: A hand-driven receiving bracket for galvanized or steel pipe used with yard fences, gateposts, pet pens, and the like comprises a round galvanized pipe and three (3) downwardly directed triangular steel plates. The bracket is then driven into the ground such that the top of the pipe is flush with the ground surface. After driving, the receiver bracket is ready for fence posts, gateposts, and other ground style devices. A plate device that sits atop the bracket and can be driven with a large sledgehammer provides a large flat surface that is suitable for impact and spreads such impact over the entire bracket, thus preventing damage. Alternately, a sliding hammer that slides upon a tall steel pipe which connects to the top of the bracket is used to drive the bracket into the ground and comprises a twist lock mechanism that engages the bracket and spreads the impact to prevent damage. When driven flush, it also is removed and replaced with a permanent fence or gateposts.

Abstract: The invention relates to a striking mechanism of a handheld electric power tool, in particular a percussion drill and/or percussion hammer, having a hammer cylinder, a piston mounted with a guide section inside the hammer cylinder in a longitudinally displaceable manner, and a piston outer guide on which a guide area of the piston is guided in a longitudinally displaceable manner. A piston end located outside the hammer cylinder comprises an overlap for overlapping an end area of the hammer cylinder, and the guide area at least partially belongs to the overlap or is affixed there.

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.

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: A representative impact tool includes a bit holding device 104 that includes an elongate tool holder 151 having a bit holding hole 151a into which a tool bit 119 is removably inserted, an outer shell component 159 which forms an outer shell of the bit holding device 104 and is mounted onto a front end portion of the tool holder 151 by moving it from the front end of the tool holder 151 toward the tool body, a stopper 171 which is fitted onto the tool holder 151 such that it is prevented from moving in a longitudinal direction of the tool holder, and serves to prevent the outer shell component 159 from becoming detached from the front end of the tool holder 151, and an opening prevention member 175 which is disposed outward of a center position of the stopper 171 in the longitudinal direction of the tool holder 151 and opposed to an outer surface of the stopper 171 in a direction transverse to the longitudinal direction of the tool holder, and prevents the stopper 171 from opening in the direction transverse t

Abstract: The invention relates to a hand tool machine (2), in particular a drilling and/or percussion hammer, with a housing (4) and a vibration-damped handle (10) elastically supported relative to the housing (4) with two essentially parallel legs (20, 22) and a coupling element (44 or 46) between each leg (20 or 22) and the housing (4) that is pin-jointed to the leg (20 or 22) and the housing (4). The coupling elements (44, 46) are connected to each other by a connector (48) that synchronizes the movements of the coupling elements (44, 46).

Abstract: A post driving and removal system comprising a base frame for mounting on a mobile base, a gripping apparatus mounted on the base frame and configured to selectively grip a post, and a driver apparatus mounted on the base frame and configured to impact a post held by the gripping apparatus.

Abstract: A tool assembly (10), for example a hydraulic or pneumatic hammer assembly, comprises a housing (11) defining a chamber (16), a reciprocating work tool (20) arranged in the chamber for cyclical movement in a work stroke and a return stroke, and a tool retention member (80) arranged to restrain the work tool at the end of the work stroke. The tool assembly (10) includes a shock absorber arranged to absorb impact from the work tool at the end of a stroke. The shock absorber comprises an annular resilient flange (102, 154), which may be cantilevered from the tool retention member (80) to absorb impact at the end of the work stroke or may be provided on a bushing (150) arranged to absorb impact at the end of the return stroke. The shock absorbing flange reduces the transmission of shocks into the tool assembly, thereby providing increased life for tool assembly components.

Abstract: A breaching device (100) includes an elongated main body (4) that forms an outer surface (2) and has a front end (24). The elongated main body (4) divides along a length and forms substantially equal upper (20) and lower (22) portions. A first curved handle (6) is attached to the outer surface (2) and extends a first height (21) over a portion of the upper portion (20). A partition (10) is attached to the outer surface (2) between the first curved handle (6) and the front end (24), and extends a second height (15) over the upper portion (20) and generally transverse to the length of the elongated main body (4). The second height (15) is greater than the first height (21).

Abstract: A breaching device (100) includes an elongated main body (4) that forms an outer surface (2) and has a front end (24). The elongated main body (4) divides along a length and forms substantially equal upper (20) and lower (22) portions. A first curved handle (6) is attached to the outer surface (2) and extends a first height (21) over a portion of the upper portion (20). A partition (10) is attached to the outer surface (2) between the first curved handle (6) and the front end (24), and extends a second height (15) over the upper portion (20) and generally transverse to the length of the elongated main body (4). The second height (15) is greater than the first height (21).

Abstract: A portion of a drill assembly operated by a supply of compressed fluid comprises a backhead, a cylinder portion, a hollow elongate wear sleeve and a piston. The backhead has a proximal end connectable to the supply, an axial bore and an open distal end having an integrated cylinder portion defined therein. The backhead has passages extending between the axial bore and the outer surface of the backhead. The cylinder portion is aligned with and in selective fluid communication with the backhead. The hollow elongate wear sleeve surrounds the cylinder portion and is connected to the backhead. The piston is housed by the wear sleeve and has a proximal end shaped to fit within the cylinder portion. The piston is slideably movable along the wear sleeve and the cylinder portion in response to compressed fluid conveyed through the backhead. When the drill assembly is in a drop open position, the proximal end of the piston is radially spaced apart from a nearest surrounding surface.

Abstract: A fluid distributor cylinder is for a percussive drill assembly that includes a casing having an inner circumferential surface defining a central bore, a central axis extending through the bore, a bit movably coupled with the casing and a piston movably disposed within the casing bore. The distributor cylinder includes a generally tubular body disposeable within the casing bore and having first and second ends, a central axis extending generally between the first and second ends, an outer circumferential surface. At least a section of the outer surface is configured to engage with the inner surface of the casing so to form an interference fit between the body and the casing. The cylinder includes an exterior thread and/or a radially-extending shoulder configured to releasably engage with the casing inner surface so as to substantially prevent axial displacement of the distributor body with respect to the casing.

Abstract: The invention relates to a drill bit assembly for fluid-operated percussion drill tools comprising a percussion bit (1) having a head portion (3) formed with an axially extending stub shank (32). The stub shank is provided with axially extending splines (36), which are slideably engageable with complementary splines (35) formed on a drive chuck (4). Rotational drive from the chuck (4) may be transmitted to the stub shank (32) by means of the splines. Bit retaining means (6, 7, 41, 42) at the chuck are adapted for engagement with complementary retaining means (37, 51) at a spline portion of the stub shank to retain the stub shank in the drill bit assembly. Engagement means on the chuck (4) are adapted for connecting the chuck (4) to a drive means (5) of the fluid-operated percussion drill tool.

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 breaking apparatus (1) including a movable mass (3) for impacting on a striker pin (4), a housing (2) and a striker pin (4) configured to partially protrude through the housing (2), the apparatus (1) characterized in that the striker pin (4) is configured to be beatable in a plurality of retaining locations relative to the housing (2).

Abstract: An impact adaptor to convert a rock drill to an impact driver is described. The impact adapter has a boom coupling for securing the adapter in co-operating alignment with the shank of a drifter. The adapter has a casing for slidingly receiving and guiding an anvil therein from a top open end of the casing. The casing has an open bottom end adapted for receiving a top end section of a pile, tube or rod in the casing. Anvil supports are provided in the casing for retaining the anvil captive therein in the absence of the top end section of the pile, tube or rod. The casing has a predetermined length above the anvil supports to permit captive displacement of the anvil and displacement of the top section of the pile, tube or rod therein. The impact adapter is secured to the drifter in a movable or immovable manner and compensates for wear of the shank.

Abstract: A rotary impact tool includes a drive shaft rotationally driven by a rotational drive power source, a hammer arranged around the drive shaft, a ball engaging with a cam groove formed on the outer circumferential surface of the drive shaft and a cam groove formed on the inner circumferential surface of the hammer, an anvil engageable with the hammer along a rotational direction and a spring for biasing the hammer toward the anvil. The hammer is designed to rotate along a rotational locus decided by the cam groove of the drive shaft and the cam groove of the hammer. The rotational locus of the hammer as seen in a development view describes a curve in which the lead angle of the rotational locus varies continuously with the change in hammer rotation angle.

Abstract: The invention relates to a hand machine tool (2), particularly a percussion drill and/or percussion hammer, comprising a housing (4) having two parallel appendages (20, 22), a hollow, U-shaped, rounded handle (10) with a yoke (24) and two parallel legs (26, 28), said handle being movably supported on springs in relation to the housing (4) for the purpose of damping vibration. The appendages (20, 22) of the housing (4) extend into both hollow legs (26, 28) of the rounded handle (10). The invention also comprises two coupling elements (34, 36) situated in the hollow yoke (24) of the rounded handle (10) which serve to synchronize the movements of both legs (26, 28). The external end faces of the coupling elements (34, 36) are flexibly connected to the appendages (20, 22). The coupling elements (34, 36) are connected on the other end faces thereof to the rounded handle (10), and cross each other, and are flexibly connected to each other at the crossing point.

Abstract: A mechanical fence post driver for attachment to a lift arm of a standard front-loader which includes a mounting plate, guide tube, and roller latch assembly. The guide tube receives a tee or other fence post inserted therein such that it contacts the mounting plate. The fence post is held in place by a roller latch assembly which compresses the post against the rearward side of the guide tube. Insertion of the fence post into the ground is accomplished by lowering the lift arm while the post is held within the guide cylinder. A rotation plate assembly may be positioned between the mounting plate and guide cylinder to provide a convenient mechanism to rotate the guide cylinder in relation to the mounting plate.

Abstract: An auto hammer has a housing, a grip portion and a striking device. The striking device has a striking rod that can strike a fastening element using a liner reciprocating motion. The striking device also has an associated clamping mechanism for clamping the fastening element. The clamping mechanism includes a clamping member, a driving part and a sliding member, wherein the clamping member is pivotally arranged in the sliding member and is connected to the driving part, and the driving part can rotate relative to the sliding member so as to cause the clamping member to rotate pivotally in the sliding member. The clamping mechanism may thus firmly clamp the fastening element in a manner that is convenient for users.

Abstract: An apparatus and method of manufacturing the same are disclosed for an impact device with interchangeable tools for applying precise momentum force to an external object. The device includes two elongated members, one of which containing a hollow portion, and a tool head disposed on one side of the first elongated member. The device can be configured to allow the first elongated member to be removably inserted into the second elongated member and to allow the second elongated member to strike the tool head in order to impart force on an external object.

Abstract: The invention provides an auto hammer being used between two surfaces perpendicular to each other and closer to the intersecting line of the two surfaces. To this end, the auto hammer comprises a housing having an upper portion, a motor contained in the housing, and a switch arranged on the housing for controlling the motor. When the auto hammer is used between two surfaces perpendicular to each other with opposite sides of the upper portion of the housing abutting against the two surfaces respectively, the distance from the central axis of the striking rod to the intersecting line of the two surfaces is between 10 mm and 40 mm, preferably 28 mm. This distance is arranged very small for allowing the auto hammer to be used closer to the intersecting line of the two surfaces.

Abstract: An auto hammer includes a housing having a grip, a head assembly arranged on one end of the housing, a motor mounted within the housing, a switch arranged on the housing for controlling the motor. The head assembly includes a striking device having a receiving cavity which comprises a locking mechanism. When the receiving cavity is retracted into the housing and locked by pressing the locking pin downwardly, with the striking rod being revealed to increase the visibility of the striking rod. During operation, the objects to be processed, such as tenons and bricks, may be impacted by the striking rod in a linear reciprocating manner, so that the function of the tool can be expanded, without being limited to knocking the fastening pieces into the objects to be processed.

Abstract: An auto hammer includes a housing having an upper portion, a head assembly arranged on one end of the housing, a motor mounted within the housing, a switch arranged on the housing for controlling the motor. The head assembly of the auto hammer additionally comprises a striking rod. The distance between the central axis of the striking rod and the top portion of the head assembly is between 5 mm and 26 mm, preferably 10.7 mm. This distance is arranged very small for allowing the auto hammer to be used closer to a base wall.

Abstract: An auto hammer includes a housing having a grip, a head assembly arranged on one end of the housing, a motor mounted within the housing, a switch arranged on the housing for controlling the motor. The hardness of the material utilized for the head assembly of the auto hammer is lower than that of the housing. During operation, the material utilized for the head assembly makes the device feel more comfortable when held by hands. The hardness of the material utilized for the grip of the auto hammer is lower than that of the housing. During operation, the material utilized for the grip makes the device feel more comfortable when held by hands. The material utilized for two opposite sides of an upper portion of the housing is different from that of the remaining portion of the housing.

Abstract: A device for impacting a fastener in one embodiment includes a lever arm pivotable between a first position whereat a flywheel is spaced apart from a drive mechanism and a second position whereat the flywheel can contact the drive mechanism, a lever arm solenoid for pivoting the lever arm between the first position and the second position, a drive mechanism sensor for generating a position signal indicative of the position of the drive mechanism, a timer for generating a timing signal, a memory including program instructions, and a processor operably connected to the memory for executing the program instructions to (i) energize the solenoid to pivot the lever arm to the second position, (ii) de-energize the solenoid based upon the position signal, and (iii) de-energize the solenoid based upon the timing signal.

Abstract: A driving apparatus is disclosed for planting a vertically oriented shaft into a granular base. The driving apparatus includes an anvil integrally formed at an intermediate location on the shaft. A weight is attached on the shaft, above the anvil, in freely slidable engagement. The shaft is provided with a tapered lower end. With the lower end positioned adjacent to the granular base, the weights may be repeatedly propelled against the anvil, by sliding along the shaft in a hammering motion, to drive the shaft into the base. The shaft may serve to support an article such as a beach umbrella.

Abstract: It is an object of the invention to provide a technique for bringing a center of gravity of a battery-powered power tool closer to a working axis of a tool bit in the battery-powered power tool. The battery-powered power tool performs an operation by movement of a tool bit 119 in an axial direction of the tool bit. The power tool includes a battery 110, a motor 111 that is driven by power supply from the battery 110, a mechanical arrangement 113, 115, 117 that drives the tool bit 119 by rotative power transmitted from the motor 111, and a tool body 103 that houses the motor 111 and the mechanical arrangement 113, 115, 117 and has a front end region in which the tool bit 119 is disposed. A sum of weights of the motor 111 and the battery 110 is smaller than a weight of the mechanical arrangement 113, 115, 117.

Abstract: A device for driving various objects using combustible fuel. Embodiments are contemplated in which the driver could be a post-driver, a power shovel, a jack-hammer or other devices. Typically, the device includes a body with a combustion chamber. A fuel injection valve selectively supplies fuel to the combustion chamber where it can be ignited using an ignition module. A piston is movable within the body to impact the ram responsive to combustion in the combustion chamber.

Abstract: A pneumatic battering ram is disclosed. The battering ram has a housing, a pressurized air tank, a ramming head, and a pivotable ramming edge. Air released from the air tank into the housing forces the ramming head outward against an enclosure to forcibly open it. Where a slug is inserted into the housing, air released from the pressurized air tank into the housing causes the slug to hit the inner surface of the ramming head, forcing it outwardly against the enclosure.

Abstract: A power tool capable of performing vibration damping action in working operation, without an increase in size. The working tool includes a motor, a housing in which an internal mechanism driven by the motor is stored, a tool bit disposed on one end of the housing, a hand grip continuously connected to the other end of the housing, and a dynamic damper. The dynamic damper is disposed by utilizing a space between the housing and the internal mechanism so that the damping direction of the dynamic damper faces the longitudinal direction of the tool bit.

Abstract: A device for impacting a fastener in one embodiment includes a drive mechanism, a flywheel pivotable between a first flywheel position whereat the flywheel is not in contact with the drive mechanism and a second flywheel position whereat the flywheel contacts the drive mechanism, a motor operably connected to the flywheel, a trigger movable between a first trigger position and a second trigger position, and a WCE assembly movable between a first WCE position and a second WCE position, the WCE assembly configured such that (i) when the trigger is in the first trigger position and the WCE assembly is in the first WCE position, the WCE assembly mechanically engages the trigger to preclude movement of the trigger out of the first position, and (ii) when the WCE assembly is in the second WCE assembly position, the WCE assembly does not mechanically engage the trigger.

Abstract: A pressure joining method includes a hammer drill attachment device mountable within the chuck of a hand-held hammer drill. Using the hammer drill attachment, an operator installs flooring sheets onto a hook and loop flooring subfloor. The hammer drill attachment includes a shaft for mounting the attachment within the chuck. The hammer drill imparts vibration to the shaft when operated. An angled body member is attached to the shaft and extends downward toward a foot assembly having a foot pad means. The foot assembly vibrates when the hammer drill is actuated to cause the foot pad means to abut against the overlapping sheets of a flooring system and to press the sheets onto an underlying subfloor, thereby forming a seam between the edges of the floor sections.

Abstract: A valve device (V, 4?) for controlling the movement in a machine housing (2) of a reciprocating percussion piston (3) of a percussion device (1) for a rock drilling machine with a first chamber (5) that can be pressurized for forward driving of the percussion piston (3) and a second chamber (8) that can be pressurized for back-driving of the percussion piston (3), wherein the valve device includes a to and fro movable valve element (20), the movement of which being controlled as a response to the position of a valve portion (V) of the percussion piston in a valve housing portion by periodically pressurizing a signal chamber (21) actuating the movement of the valve element over signal conduit means (22, 23, 24).

Abstract: A breaching apparatus includes an impactor element and a self-contained energy source. The self-contained energy source enables the impactor element to impact a first surface of a structure. The impactor element is configured to transmit a localized shock wave through the structure upon impact. The self-contained energy source is capable of accelerating the impactor element to a velocity sufficient to induce spalling at a second surface of the structure. Multiple breaching apparatuses can be supported by a frame to facilitate simultaneous or successive breaching of the structure. The breaching apparatus can be used in a method to breach a concrete structure.

Abstract: A hammering tool includes, within its tool main body, a piston which reciprocates by using a motor as its drive force, a hammering member which carries out its hammering operation in linking with the reciprocating motion of the piston, and an intermediate member which transmits a hammering force of the hammering member to a top end tool mounted on the top end of the tool main body. The tool main body further includes a measuring device which measures a hammering state of the hammering member and a control device which controls the number of rotations of the motor. The control device, according to measurement results of the measuring device, determines the limit number of times of hammering where the hammering member becomes unable to follow the reciprocating motion of the piston, and thus controls the number of rotations of the motor.

Abstract: A pressure-fluid-operated percussion device includes a frame allowing a tool to be arranged movably in its longitudinal direction. Pressure liquid is fed to the percussion device and returned to a pressure liquid tank. A stress pulse is produced in the tool utilizing pressure of the pressure liquid. A pressure liquid source maintains pressure in the working pressure chamber. Pressure liquid is intermittently fed to the percussion device such that the pressure liquid pushes a transmission piston into a predetermined backward position. Pressure liquid is alternately discharged rapidly from the percussion device so that the pressure of the pressure liquid in the working pressure chamber and the pressure liquid flowing from the pressure liquid source pushes the transmission piston towards the tool, generating a stress pulse in the tool.

Abstract: A pile driver includes a leader rotation/holding mechanism that can firmly hold a leader in a rotatable state and also reliably rotate the leader using a general-purpose, inexpensive hydraulic motor by keeping the hydraulic motor from action of a bending moment from the leader. The pile driver has a leader revolver that includes a mechanism for rotating a leader. The leader revolver includes an outer tube and an inner tube that is concentrically arranged inside the outer tube via a pair of tapered roller bearings provided at two upper and lower positions. A lower part of the leader is connected, in an integrally rotatable state, to an upper part of the inner tube protruding upward from an upper end opening of the outer tube. A hydraulic motor is placed in a lower part of the leader revolver.

Abstract: A vibration generator for a vibration pile driver has imbalance masses that can rotate and which are disposed on shafts. The rotational position of the imbalance masses can be adjusted relative to one another. A control and regulation circuit is provided which has a memory unit for storing ground composition data sets or task-specific default data sets with defined operational characteristic variables. The unit also has sensors for continuous detection of the defined operational characteristic variables, an evaluation unit for comparing the operational characteristic variables that are determined with the operational characteristic variables of the selected default data set, a regulation device for regulating the vibration generator, and a control device for controlling the adjustment of the rotational position of the imbalance masses relative to one another. The vibration generator is part of a vibration pile driver.

Abstract: The invention relates to a striking mechanism of a handheld electric power tool, in particular a percussion drill and/or percussion hammer, having a hammer cylinder, a piston mounted with a guide section inside the hammer cylinder in a longitudinally displaceable manner, and a piston outer guide on which a guide area of the piston is guided in a longitudinally displaceable manner. A piston end located outside the hammer cylinder comprises an overlap for overlapping an end area of the hammer cylinder, and the guide area at least partially belongs to the overlap or is affixed there.

Abstract: A multi-mode drill can include a transmission to transfer torque from an output member of a motor to an output spindle. A transmission housing encloses the transmission in an interior cavity formed by a gear case shell and a cover plate. The cover plate can be coupled to the outer shell via screws. A static shift rod can be supported at one end by the cover plate. A shift bracket can be mounted on the shift rod and biased to a mode position by a biasing member exerting a force between the shift bracket and the cover plate. A shift pin can be supported adjacent one end by the cover plate and biased to a mode position by a biasing member exerting a force between the shift pin and the cover plate. A spindle biasing member can bias the output spindle against the cover plate. The shift pin can actuate an electronic switch. A motor housing can be coupled to the transmission housing with fasteners so that the cover fasteners are not accessible.

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

Abstract: A cutting apparatus with a ring saw which can easily carry out a high-speed cutting by rotating while applying an impact force, crushing a base rock, a stone, a concrete or the like, and cutting while flicking the crushed portion is provided. Further, a user-friendly cutting apparatus with a ring saw which can easily carry out an operation at a time of attaching as an attachment to a shovel type excavating machine such as a backhoe or the like is also provided. The cutting apparatus with the ring saw in accordance with this invention is a cutting apparatus with a ring saw provided with a cutting blade, and a driving step rotationally driving the ring saw around a center axis thereof, in which the ring saw is supported to a support body attached to an apparatus main body so as to freely oscillate in a cutting and traveling direction, and an impact applying step is provided so as to apply an impact force to a subject to be cut from a cutting blade of the ring saw under rotation.

Abstract: A post driver having rotational handles and a dampening device adapted to isolate the hands and arms of the user from shock.

Abstract: A tool for installing tubing in channels of floor panels comprises a handle attached to an upper portion of a front frame and a pair of wheels attached to a bottom portion of the front frame, a pneumatic drive, mounted between a front frame spacer and a bearing block, drives a hammer assembly for pushing the tubing into the channels, and a steering block is secured under the bearing block by a bearing assembly which enables the steering block to rotate about a bearing. An upper portion of a rear strut attaches to the bearing block and a pair of wheels attach to the lower portion of the rear strut. The tool quickly and efficiently installs the tubing into the flooring channels as the tool is rolled along the floor panels when an air source is attached to an air coupling on the pneumatic drive.

Abstract: A nail pusher includes a handle, a guide tube mounted in the handle and having a nail guide slot, a nail magazine mounted on the handle, a plurality of nails mounted in the nail magazine, a push member movably mounted in the nail magazine to push each of the nails through the nail guide slot into the guide tube, and a thrusting rod mounted on the handle and movable in the guide tube to thrust one of the nails outwardly from the guide tube. Thus, the push member is pushed to introduce each of the nails into the guide tube successively, and the nails are ejected outwardly from the guide tube successively, so that the nail pusher can push and eject the nails successively.

Abstract: A slide hammer for driving a probe into the ground includes a probe lifting and removal arrangement in which a slide hammer tube is pivoted away from the probe to function as a lever operating with a clutch arrangement to incrementally withdraw the probe from the ground. A biasing arrangement using a coil spring is operative to hold the anvil in a locked probe driving position, to facilitate release of the tube from the locking position for pivotal movement to the probe removal position, to bias a clutch disk to a release position with respect to the pin, to facilitate incremental lifting contact between the clutch disk and the pin, and to return the tube to a subsequent incremental lifting position.

Abstract: This invention discloses a percussion toggle device of a percussion driller. It includes bottom ratchet wheel that joggles the top ratchet wheel fixed in the output main shaft of the percussion driller, the locking ring used to lock the rotating direction of bottom ratchet wheel, the ejector rod to eject the locking ring, the slide rod that works with ejector rod to make it rise or fall, the percussion button connecting the slide rod, the positioning device to fixate the position of slide rod, and the reset device that works with the positioning device to remove the position limitation by the positioning device. This invention locks the rotating direction of bottom ratchet wheel through the independent percussion button, slide rod and ejector rod. In this way, the percussion toggle and the adjustment of torque force of the percussion driller can be separated. When using the percussion button, the user can toggle their operation between percussion and torque force.