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| Number | Title | Issue Date |
| 8051922 | Hand-held power tool with vibration compensator A hand-held power tool (1;101) includes a drive (6;110) located in the power tool housing (2;102) for driving a working tool (111), and a torsional pendulum (4; 120; 220; 320; 420; 520) at least partially mounted on the housing ( | 11/08/2011 |
| 7896103 | Power tool housing support structures A tool housing which in one aspect includes a body defining a head portion with a handle portion depending therefrom to define a forward and/or a rear junction. A metal reinforcing member is configured to span along an inside surface of the body from the head portio... | 03/01/2011 |
| 7610968 | Powered hand tool A powered hand tool comprising a pneumatic motor including a cylinder, a main body formed as a hollow tube member, a main body rear end being formed with a fluid inlet and a fluid outlet, the main body being axially disposed for engagement with the pneumatic motor, ... | 11/03/2009 |
| 7438140 | Shock attenuating device for a rotary impact tool A shock attenuating coupling device is provided for a rotary impact tool for drivingly connecting a hammer mechanism to a drive anvil. The shock attenuating coupling device includes a first coupling member, a second coupling member, a drum, a shoe, and a body of res... | 10/21/2008 |
| 7416031 | Impact tool An impact tool comprising a motor, a hammer 8 that is rotated and axially moved by a drive force of the motor, an anvil 3 that repeats engagement/disengagement from the hammer 8 accompanying rotation and axial movements of the hammer 8, a... | 08/26/2008 |
| 7413030 | Pneumatic hammer drill having vibration damping end cap A pneumatic hammer drill includes a handle body, a pneumatic cylinder, a piston, a tool, and a damping member. The handle body has an upper part that defines a front cavity and that has a rear end. The pneumatic cylinder has a cylinder rear end fitted in the front c... | 08/19/2008 |
| 7410008 | Ground rod driver A ground rod driver that uses an industry standard connecting plate to physically attach the driver to Skid Steer type equipment. The driver has a hydraulic, impact driving hammer connected to an alignment beam that enables vertical movement of the hammer. Operation... | 08/12/2008 |
| 7401662 | Powered hand tool A powered hand tool comprising a pneumatic motor including a cylinder, a main body formed as a hollow tube member, a main body rear end being formed with a fluid inlet and a fluid outlet, the main body being axially disposed for engagement with the pneumatic motor, ... | 07/22/2008 |
| 7357195 | Power tool and gear unit assembled therein A power tool including a gear unit provided with a load moderating mechanism capable of reducing noise and prolonging service life. A coupling is force fitted with a spindle at a predetermined pressure allowing the spindle and the coupling to rotate relative to each... | 04/15/2008 |
| 7357194 | Percussion power tool A percussion power tool includes a motor (6) located in the tool-housing (4) for driving the output member (12) and the percussion mechanism (10), a chuck (20) for receiving a working tool (22), a locking mechanism (24 | 04/15/2008 |
| 7325811 | Chuck A chuck (2) for a hand-held power tool (4), which is connected with a motor-driven spindle (6) of the power tool for joint rotation therewith, includes a locking device for securing a shaft section of an exchangeable working tool and having a ci... | 02/05/2008 |
| 7293361 | Hand tool for chopping ice An ice chopper having a blade for initially engaging ice with a small force followed by an impact of a larger force to break up the ice. The ice chopper has a tube for a handle having a second tube inside with a compression spring. The second tube has a blade attach... | 11/13/2007 |
| 7287679 | Powder activated setting tool piston retainer arrangement and method Disclosed herein is a powder actuated setting tool piston retainer arrangement which includes a housing and firing mechanism and a piston having a piston retaining ring in operable communication with the housing and firing mechanism. Further the arrangement includes... | 10/30/2007 |
| 7213659 | Impact drill An impact drill includes a first ratchet together with a spindle and movable in an axial direction, and a second ratchet engageable with the first ratchet. The second ratchet can be moved in the axial direction, and rotated with a predetermined range in a rotational... | 05/08/2007 |
| 7207394 | Intermediate and assembly assistance components for fluid driven tools and tools incorporating the same A flow guide configured for insertion in a cavity defined between an outer housing and a nested inner motor housing of a fluid driven tool. The flow guide defines a longitudinal axis and includes at least two longitudinal portions disposed parallel to the longitudin... | 04/24/2007 |
| 7143840 | Impact tool An impact tool enables a front cover part to be easily attached to and detached from a housing body, with a device having a simplified structure. The front cover part has an annular fastening portion clamped to the outer peripheral surface of a front edge portion of... | 12/05/2006 |
| 7131563 | Nail driver bumper A nail driver bumper comprises an inner pad and an outer pad which are made of heat-resisting elastomer material. A plurality of axial ribs is arranged between the inner pad and the outer pad. An axial slot is formed between two adjacent axial ribs. A top of each ax... | 11/07/2006 |
| 7124840 | Engine breaker An engine breaker includes a vertically extending cylindrical main body (1), a work member (2) supported by a lower portion of the main body for up and down movement, an engine (5) mounted to an upper portion of the main body and having an outpu... | 10/24/2006 |
| 7093670 | Impact drill An impact drill minimizing transmission of vibration to a handle gripped by a user's hand. A spindle extends through a main frame and is movable in its axial direction and rotatable about its axis. A first ratchet is rotatable and axially movable together with the s... | 08/22/2006 |
| 7083003 | Power tool with detachable drive end A rotary tool includes a housing structure with a plurality of apertures therein, drive mechanism disposed within the housing structure, a detachable drive end mechanism coupled to the drive mechanism, and a retaining structure received by the apertures. The drive m... | 08/01/2006 |
| 7076838 | Hand-held machine tool with vibration-damped handle A very extensive decoupling of the handle from vibrations in the hand power tool is obtained by the fact that, on each of two legs (5, 7) extending nearly parallel to the longitudinal axis (9) of the hand power tool, at least one lever (19, 21) ... | 07/18/2006 |
| 7070009 | Vibration isolation mount system (ISO) A power tool includes vibration isolation material positioned between an engine shroud and a drive shaft housing. The vibration isolation material isolates the drive shaft housing from engine vibration for radial, axial, and torsional movement without utilizing inte... | 07/04/2006 |
| 7059423 | Jackhammer system A jackhammer system for reducing the vibration and noise experienced by an operator of the jackhammer. The jackhammer system includes a housing, a chisel movably positioned within a lower neck of the housing, a pair of flywheels rotatably attached to a pair of suppo... | 06/13/2006 |
| 7048075 | Power tool A power tool includes a powered drive source, a speed reduction mechanism portion for transmitting a rotational power of the drive source, a striking mechanism portion for converting the rotational power of the speed reduction mechanism portion into a striking force... | 05/23/2006 |
| 7048074 | Control system for a percussion drive The invention relates to a control system for a percussion drive of an earth drilling unit having a housing, a drilling tool, a pulling or thrusting drive, a percussion piston, a pressure chamber belonging to the percussion piston and a pressure medium feed, which c... | 05/23/2006 |
| 7036211 | Percussive power tool pulling device A pulling tool comprises an air-powered internal anvil and hammer. The pulling tool is attached to the object to be removed. The hammer is urged by pressurized air to repeatedly strike the anvil, which applies a percussive force to the object, progressively removing... | 05/02/2006 |
| 7036608 | Apparatus for producing self-exciting hammer action, and rotary power tool incorporating such apparatus An apparatus for providing percussion action in a rotary power tool having a rotary output shaft, the apparatus comprising at least one moveable mass adapted to have a component of movement parallel to the axis of the rotary output shaft to cause impacts to be appli... | 05/02/2006 |
| 7032687 | Percussion device Percussion device, includes a housing and two movable bodies, an impact body for an impact pin protruding from the housing, and a balancing body for counterbalancing impact motions of the impact body. The housing includes springs, which constantly strive to bring th... | 04/25/2006 |
| 7032683 | Rotary hammer A rotary hammer and a power tool. The rotary hammer is operable in an idle mode and a hammer mode and comprises a housing and a barrel positioned in the housing and having a forward portion. A ram is positioned within the barrel and is movable relative to the barrel... | 04/25/2006 |
| 7014086 | Ignition device for igniting a foil cartridge in an explosion-operated power tool An ignition device for igniting a foil cartridge (10) in an explosion-operated power tool includes an electrical insulator (24) arranged in the support (8), a pin-shaped electrode (25) located in the electrical insulator and having a tip ... | 03/21/2006 |
| 7013986 | Impact tool An impact tool enables a front cover part to be easily attached to and detached from a housing body, with a device having a simplified structure. The front cover part has an annular fastening portion clamped to the outer peripheral surface of a front edge portion of... | 03/21/2006 |
| 7013984 | Powered tool A tool for a powered machine, having vibration damping member. A method of providing a tool having a vibration damping member arrangement, applicable to different tools, is described. Estimated antinode positions along the tool in use are determined and a vibration ... | 03/21/2006 |
| 6997269 | Attachment for impact hammer An attachment for an impact hammer for translating the hammer's typical forwardly directed impact force into a rearwardly directed pulling force while still allowing the user to maintain a conventional orientation of the hammer relative to the work piece intended to... | 02/14/2006 |
| 6941627 | Adaptable fastener installation tool A system for installing fasteners into a workpiece. The system includes a fastener orientation system and an installation unit. The fastener orientation system receives the fastener from a fastener delivery tube and retains the fastener in a holding jaw. Specificall... | 09/13/2005 |
| 6932166 | Pneumatic tool A pneumatic tool (20) for impacting a workpiece (22) is provided. The tool (20) comprises a casing (42) defining a chamber (48). A piston (54) is slidable within the chamber (48) along an operational axis (A). An exha... | 08/23/2005 |
| 6923269 | Demolition hammer and/or hammer-drill with a percussion device suitable for releasing clamped objects by striking The invention relates to a demolition hammer and/or hammer drill comprising a percussion generating device having a percussion piston moving axially back and forth. In a main percussion mode, the percussion piston impinges upon a tool which can move along a limited ... | 08/02/2005 |
| 6907943 | Electric hammer It is, accordingly, an object of the present invention to provide an electric hammer with improved construction, while ensuring the vibration reduction performance. According to the present invention, a representative electric hammer may include a hammer bit, a driv... | 06/21/2005 |
| 6905055 | Setting tool A combustion-engined setting tool, including a housing (11), an axially displaceable piston guide (13) and a firing pin guide (12) provided on a side of the piston guide (13) facing in the direction opposite the setting direction and axia... | 06/14/2005 |
| 6857548 | Power actuated tools An explosively operated tool (1) for driving a fastener into a substrate such as steel or concrete has a resetting mechanism (12) for resetting a piston (10) of the tool into a rear part of a barrel assembly (8) of the tool after each fir... | 02/22/2005 |
| 6824035 | Power operated piston tool with piston automatic return The present invention provides a defect-less and easy to operate power actuated piston tool with automatic piston return, designated for driving fasteners into a base like masonry, concrete, wood or the like. The tool according to the invention is characterized by t... | 11/30/2004 |
