| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 173093000 |
With anvil arranged to transmit torsional impact to tool
| 52 |
| 173104000 |
With means for rotating tool
| 52 |
| 173200000 |
Hammer head driven by pulsating fluid pressure
| 43 |
| 173210000 |
With impact cushioning means
| 42 |
| 173206000 |
Hammer head constitutes piston of drive motor
| 34 |
| 173122000 |
Hammer head driven by relatively moving motion transmitting element
| 30 |
| 173128000 |
Impact transmitting anvil
| 23 |
| 173114000 |
With means to reciprocate tool
| 22 |
| 173117000 |
Hammer head driven by electric motor
| 18 |
| 173094000 |
Hammer head moves in arcuate path or rotates
| 16 |
| 173112000 |
With means to cause or control advance of hammer head
| 13 |
| 173202000 |
Hammer head driven by spring
| 6 |
| 173115000 |
Length of cyclic travel of hammer head selectively adjustable | 4 |
| 20100139939 | HYDRULIC BREAKER ASSEMBLY - A hydraulic breaker assembly including a head cap, a cylinder, and a front head, which arc mounted in a casing, wherein corresponding faces of the front head and the cylinder are connected by connecting pins, wherein the cylinder and the head cap located above the cylinder are fixed together by fastening bolts, and wherein the front head, the cylinder, and the head cap are supported on an inner side of the casing by variable dampers, which are brought into close contact with the front head, the cylinder, and the head cap. The movement in the casing is thus prevented so that the head cap, the cylinder, and the front head are strongly coupled together. The length of the fastening bolt is reduced to minimize the impact-generating section so that the bolt is protected from distortion stress occurring upon striking of the rod, thereby increasing durability. | 06-10-2010 |
| 20100252290 | ADJUSTABLE AMPLITUDE HAMMER DRILL MECHANISM - An adjustable amplitude hammer drill mechanism comprises a main shaft having a forward drill chuck end portion and a rearward shank portion, and defining a longitudinal axis. An impact receiving member is mounted in fixed relation on the main shaft for rotation therewith. A selectively operable longitudinal-hammer member is mounted on the main shaft for free rotation of the main shaft with respect to the longitudinal-hammer member and for operative engagement with the impact receiving member. Rotation of the main shaft and impact receiving member about the longitudinal axis when the longitudinal-hammer member is in force transmitting engagement with the impact receiving member, causes the longitudinal-hammer member to move in a reciprocating motion between the forwardly displaced position and the rearwardly displaced position, and transmits impact forces forwardly along the longitudinal axis to the main shaft. There is also an amplitude adjustment assembly for mounting the selectively operable longitudinal-hammer member in the operative engagement with the impact receiving member. | 10-07-2010 |
| 20140027138 | IMPACT MECHANISM, ROCK DRILL AND DRILL RIG COMPRISING SUCH IMPACT MECHANISM - The invention relates to an impact mechanism comprising a housing ( | 01-30-2014 |
| 20160199969 | HYDRAULIC HAMMER HAVING VARIABLE STROKE CONTROL | 07-14-2016 |
| 173118000 |
Spring bodily cyclically moved with hammer head | 3 |
| 20100025061 | STRIKING MECHANISM FOR A HANDHELD POWER TOOL - The invention is a striking mechanism for a handheld power tools in particular electric hammer. A piston is arranged in an axially bidirectionally movable manner in a guide tube. A striker is provided which acts on a striking pin and which is held in a movable manner in the guide tube. A compression space is delimited by the piston and the striker such that an air cushion is enclosed therein. It is proposed that at least one spring element is provided between the striker and the striking pin. | 02-04-2010 |
| 20100236802 | Percussive Mechanism with an Electrodynamic Linear Drive - A percussive mechanism, which is provided in the form of an, e.g. pneumatic spring percussive mechanism, comprises an electrodynamic linear drive, a drive piston, which can be reciprocally moved inside a percussive mechanism housing by the linear drive, and a percussive piston. An additional hollow space is provided in front of and/or behind the drive piston and can be isolated at least in part from the surrounding area so that a pneumatic spring can be created in the additional hollow space. The pneumatic spring slows the drive piston at its returning points and facilitates a returning motion without loading the electrodynamic linear drive. | 09-23-2010 |
| 20120103644 | IMPACT TOOL - A tool body ( | 05-03-2012 |
| 173126000 |
Hammer head comprises plural parts or diverse materials | 2 |
| 20120118597 | STRIKING-MECHANISM BODY, STRIKING MECHANISM AND HANDHELD POWER TOOL WITH A STRIKING MECHANISM - A striking-mechanism body of a handheld power tool at least a first part of the striking-mechanism body, having an impact surface and/or a lateral surface of a first material, and a second part of the striking-mechanism body of a second material, and the first material being more resistant than the second material in terms of at least one material characteristic, the striking-mechanism body being configured as a one-piece steel body so that the first material and the second material are the same, and the first material of the first part body undergoes a heat treatment that differs from that of the second material of the second part of the striking-mechanism body, or the first and the second materials are different, and the first and the second parts are joined together. | 05-17-2012 |
| 20130112449 | TORSION INCREASING PNEUMATIC TOOL PERCUSSION HAMMER - A pneumatic tool percussion hammer features motion ends of the percussion block of the percussion hammer with added configuration of a mass increasing part. The mass increasing part can help to increase the mass of the motion ends of the percussion block without increasing the overall size of the percussion block. Hence, the present invention can effectively increase the inertia force of the percussion block in motion, and consequently the torsion and instant acceleration of the percussion hammer, without the need to increase the overall size of the percussion hammer. | 05-09-2013 |
| 173091000 |
Selective axial direction of impact | 2 |
| 20120325510 | IMPACT WRENCH WITH IMPROVED REDIRECTION SWITCH - An impact wrench with an improved redirection switch includes a housing, a motor shell, an on/off bar set, and a redirection switch. The pushing bar of the redirection switch and the redirection valve are connected in tandem along the same horizontal line. The rotational axis of the rotating redirection valve is perpendicular to the penetrating axis of the on/off bar set, instead of the same penetrating axis line. Therefore, the invention achieves the redirection effect without increasing the volume of its handle. | 12-27-2012 |
| 20160169582 | IMPACT TOOL FOR A HAMMER DEVICE AND METHOD FOR OPENING A TAPPING OPENING | 06-16-2016 |
| 173101000 |
Plural relatively moved hammer heads | 1 |
| 20100252289 | DRILLING APPARATUS - A plurality of weight hammers ( | 10-07-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20090090527 | SHOCK DAMPENING POST DRIVER - A post driver having a dampening device adapted to isolate the hands and arms of the user from shock. | 04-09-2009 |
| 20090178818 | Post Handling Assembly - According to one aspect of the present invention there is provided a manually operated post handling assembly including: a main body; a post drive means integral with or connected to the main body; and a post extraction means including a post grip assembly operatively connected to the main body, the post extraction means being adapted to move between a deployed position and a stowed position. | 07-16-2009 |
| 20100101814 | HAND MACHINE TOOL - The invention relates to a hand machine tool which has an intermediate flange, particularly for receiving transmission elements. The flange has at least one base body having at least one bearing point. It is proposed that at least one opening is provided at least in the area of the bearing point. | 04-29-2010 |
| 20100147542 | TOOL LIFTING - The invention relates to a tool receptacle ( | 06-17-2010 |
| 20100155093 | IMPACT ADAPTER FOR A ROCK DRILL - 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. | 06-24-2010 |
| 20100170688 | BATTERING RAM WITH REPLACEABLE HEADS - A battering ram system includes an elongated tubular body with an open end and a pair of laterally-extending handles that can be grasped for swinging the body against a door to break a door down. Interchangeable impact heads are provided, each having an elongated male section fit into an open end of the body, a flange abutting the end when the male section is in the body, and an operative end configured to generate a desired impact against the door. A retainer threads into the body to retain the head to the body, but still the flange transfers energy to the body from the impact and not the retainer. The plurality of impact heads are particularly shaped for specific different tasks, such as oversize heads for weight and large surface, undersized heads for high force and damage, and wedge-shaped heads for prying/wedging. | 07-08-2010 |
| 20100300715 | HAND-HELD POWER TOOL - 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. | 12-02-2010 |
| 20110088922 | BATTERY-POWERED POWER TOOLS - 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. | 04-21-2011 |
| 20110120739 | AUTO HAMMER - 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. | 05-26-2011 |
| 20110180289 | IMPACT TOOL - 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. | 07-28-2011 |
| 20110209887 | METHOD AND DEVICE FOR FORICIBLE ENTRY - A breaching device ( | 09-01-2011 |
| 20110240321 | POST DRIVER AND PULLER - 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. | 10-06-2011 |
| 20110290517 | IMPACT TOOL - A representative impact tool includes a bit holding device | 12-01-2011 |
| 20120024553 | Implement and tool for loosening connection elements and kit comprising such implement - 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 ( | 02-02-2012 |
| 20120037389 | Composite Seal for a Hydraulic Hammer - A hydraulic hammer ( | 02-16-2012 |
| 20120061114 | Impacting Device and Method - 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. | 03-15-2012 |
| 20120111593 | Fence Post Driver | 05-10-2012 |
| 20120145424 | DEMOLITION HAMMER WITH REVERSIBLE HOUSING AND INTERCHANGEABLE WEAR PLATE ARRANGEMENT - 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. | 06-14-2012 |
| 20120145425 | POST EXTRACTOR - 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. | 06-14-2012 |
| 20120325509 | Quick Release Socket Attachment For Impact Wrench - An impact wrench, includes a housing including a handle. A rotating anvil is supported by the housing and includes a polygonal head adapted for receiving a socket thereon. A socket retention device is mounted to the polygonal head of the rotating anvil for securing a socket to the polygonal head. A socket release mechanism includes an actuator mounted to the housing and operable to disengage the socket retention device from the socket to allow the socket to be removed from the anvil. | 12-27-2012 |
| 20130081837 | System and Method for Easy Removal of Hydraulic Hammer Bushing - A hydraulic hammer having a front head and a lower bushing is disclosed. Also disclosed is a system and method for easily removing the lower bushing from the front head. The front head of the hydraulic hammer may define a bore therein and an inner surface of the bore may have a first taper. The lower bushing of the hydraulic hammer may be capable of being positioned within the bore of the front head and an outer surface of the lower bushing may have a second taper, with the first taper substantially following the second taper. | 04-04-2013 |
| 20130087356 | ROCK DRILLING MACHINE, REMOVABLE CARTRIDGE, STOP RING AND DRILLING RIG - The invention relates to a rock drilling machine comprising a front part ( | 04-11-2013 |
| 20130112447 | PORTABLE DRIVING DEVICE - A portable driving device for permanently driving stakes, survey flags, posts, or the like, of varying sizes and shapes, into the ground. The invention provides for powering the device by a pressurized fluid with a single power cylinder, a valve control assembly including a self-exhausting spool valve controlled by a rod that runs through the spool valve, and safety switches in series for controlling delivery of pressurized fluid to the driving device. | 05-09-2013 |
| 20130118768 | DRILL HAMMER AND/OR IMPACT HAMMER HAVING FREE CONVECTION COOLING - The invention relates to a percussion tool having an internal combustion engine and a hammer mechanism that can be driven by the internal combustion engine by means of a transmission. A part of the engine housing, the transmission housing, or the impact hammer mechanism housing is enclosed by a cover. The cover is spaced at a distance from the remainder of the machine, so that a gap is present between the cover and the remainder of the machine. Cooling air can flow into the gap at the lower face of the cover and flow back out via a flue and an opening. The components beneath the cover are thereby effectively cooled, even without an additional cooling air blower. | 05-16-2013 |
| 20130126199 | CONTROLLED IMPACT RESCUE TOOL IMPACT ELEMENT - An impact element is provided and includes a single body drivable into an external element by force acting on a piston head. The single body includes a head and a shaft having a first end integrally coupled to the head, a second end opposite the first end and a central portion interposed between the first and second ends. The second end of the shaft is operatively connectable with the piston head to define a joint located remotely from the head. The first end of the shaft has a trailing portion with a diameter similar to that of the central portion, a leading portion with a diameter similar to that of the rear end of the head and a taper from the trailing portion to the leading portion. | 05-23-2013 |
| 20130133909 | ENHANCED VIBRATIONAL OR HAMMERING APPARATUS - Vibrational apparatus to direct stress waves (eg. to a bit | 05-30-2013 |
| 20130161044 | HAND-HELD MACHINE TOOL HAVING A STRIKING MECHANISM - In a hand-held machine tool, having a tool holder for holding at least one first tool, which has a tang having a first coupling contour that is able to be connected to the tool holder and having a striking mechanism for the striking drive of the first tool connected to the tool holder in the axial direction of the tool holder in a striking operation associated with the hand-held machine tool, a chuck adapter is provided to hold at least one second tool, which has a tang provided with a second coupling contour, which is able to be connected to the chuck adapter in a torsionally fixed manner. | 06-27-2013 |
| 20130180746 | PNEUMATIC IMPACT TOOL WITH A SPINDLE POSITIONING DEVICE - A pneumatic impact tool includes a spindle extending along an X-axis, an output shaft extending along a Z-axis, and a spindle positioning device that includes a bushing and a stop pin. The bushing is threaded in a housing, and has a stop surface and a frustoconical outer surface. The stop surface obstructs the spindle from moving away from the output shaft. The frustoconical outer surface has opposite first and second ends. The first end is nearer to the X-axis and farther away from the Z-axis than the second end. The stop pin is disposed removably in the housing, and has an engaging surface abutting against the frustoconical outer surface, so as to prevent the bushing from moving in the housing in a direction away from the output shaft. | 07-18-2013 |
| 20130228356 | POWER TOOLS WITH TITANIUM HAMMER CASES AND ASSOCIATED FLANGE INTERFACES - Power tools with housings or hammer cases include a thin wall titanium shell tapering from a smaller forward section to a larger rearward section; with at least the rearward section having a wall with a substantially constant wall thickness and an interface flange that includes an outer perimeter profile that is curvilinear and defines a plurality of outwardly extending detents that provide an interference fit with the wall of the hammer case. | 09-05-2013 |
| 20130333908 | TRANSMISSION HOUSING - 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. | 12-19-2013 |
| 20140008089 | Impact driver having an impact mechanism - 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. | 01-09-2014 |
| 20140020920 | Flow Control Screen For Use With Hydraulic Accumulator, Hydraulic Hammer Using Same, And Manufacturing Method - 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. | 01-23-2014 |
| 20140041888 | STRIKER MEMBER, AND A DRILLING MACHINE COMPRISING A STRIKER MEMBER - A circular cylindrical striker member | 02-13-2014 |
| 20140041889 | Hand-Held Power Tool - The invention relates to a hand-held power tool having a bearing ring ( | 02-13-2014 |
| 20140069673 | TAMPING TOOL - 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. | 03-13-2014 |
| 20140144658 | PERCUSSION MECHANISM APPARATUS - 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. | 05-29-2014 |
| 20140144659 | DEMOLITION HAMMER WITH REVERSIBLE HOUSING AND INTERCHANGEABLE WEAR PLATE ARRANGEMENT - 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. | 05-29-2014 |
| 20140151080 | ELECTRIC POWER TOOL - A drilling tool | 06-05-2014 |
| 20140332244 | ENCLOSURE FOR A POWER CELL OF A HYDRAULIC HAMMER - 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. | 11-13-2014 |
| 20150041168 | SHROUD MEMBER FOR A POWERED HAMMER - 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. | 02-12-2015 |
| 20150068782 | PERCUSSION DEVICE - 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. | 03-12-2015 |
| 20150343626 | HAMMMER TOOL ASSEMBLY - A hammer tool assembly for a machine is provided. The 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. A set of paired blocks are coupled to an inner wall of the first and second side plates respectively. Each of the set of paired blocks includes a plurality of holes configured to receive dowel pins therein. A plurality of mechanical fasteners received through a plurality of openings at any one of the first and second side plates. The plurality of openings of each of the first and second side plates is coaxially aligned with corresponding holes in each of the set of paired blocks respectively. A plurality of mechanical fasteners passes through the aligned holes and extends through the plurality of openings provided at the other of the second and first side plates. | 12-03-2015 |
| 20150360361 | HAMMER TOOL ASSEMBLY - 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. | 12-17-2015 |
| 20150368873 | Excavator Hammer Attachment Apparatus - The excavator hammer attachment apparatus is adapted to be quickly attached to an excavator or skid-steer loader arm and used in easily and quickly demolishing concrete by swinging the apparatus and striking the concrete. Because the apparatus employs rubber isolators instead metal springs, such demolition is able to be accomplished with less noise and shock to the machine to which it is attached than would otherwise occur and with substantially improved operator safety. | 12-24-2015 |
| 20160067858 | HYDRAULIC HAMMER WITH CLEARANCE CONTROL SYSTEM - A clearance control system for a hydraulic hammer is disclosed. The hydraulic hammer includes a housing member, a power cell disposed within the housing member, a wear member disposed between the housing member and the power cell, and a clearance control system for controlling the predefined clearance between the wear member and the power cell. The clearance control system includes a mounting boss and a fastening member disposed on the mounting boss. A first end of the fastening member is configured to receive an input from an operator and the second end is configured to contact with the first surface of the wear member. The fastening member is configured to move along a central axis defined by a threaded hole of the mounting boss to move the wear member towards the power cell, to control the predefined clearance between the wear member and the power cell. | 03-10-2016 |
| 20160184982 | Demolition Hammer with Wear Plate System Having Debris Channels - A demolition hammer includes a housing defining an interior cavity, a power cell having a front head, and a wear plate. The power cell is disposed within the interior cavity of the housing. The wear plate is interposed between the housing and the front head of the power cell. The wear plate includes a body defining a central longitudinal axis. The body has a face that includes a bottom end, a top end in spaced relationship to the bottom end along the central longitudinal axis, and a pair of lateral edges in spaced relationship to each other along a transverse axis that is perpendicular to the central longitudinal axis. The face includes an interface surface that defines at least one channel extending along the central longitudinal axis and that is in proximate relationship with the front head of the power cell. | 06-30-2016 |
