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| Number | Title | Issue Date |
| 8161849 | Torque limiter An adjustable torque limiter that can be coupled between a high speed driver and the socket that rotates a mechanical fastener. When a preset torque level is reached, the torque limiter disengages the rotational drive force from the bit. The adjustability of the tor... | 04/24/2012 |
| 7793572 | Attachment for a power tool An attachment for a power tool has a tool receptacle for receiving a tool bit, a locking unit which is detachably mountable on a housing of a power tool, an output shaft, which is connectable to a drive shaft of the power tool in a manner fixed against relative rota... | 09/14/2010 |
| 7650821 | Torque-limiting mechanism A torque-limiting mechanism is provided for use in a variety of torque-applying tools. The mechanism includes a handle defining a housing in which are disposed a slip gear and a fixed gear. The fixed gear is attached to the housing while the slip gear is attached to... | 01/26/2010 |
| 7578220 | Hand tool with a clutch device A hand tool includes a handle a shank is inserted into an axial recess in the handle. Multiple first teeth extend inward from an inner periphery of the axial recess. Two plates extend axially from the top end of the handle and each plate includes a hook which has an... | 08/25/2009 |
| 7422075 | Rotary tool An overload clutch assembly for a power tool having two torque settings through which rotary drive is transmitted to a spindle. The overload clutch assembly is capable of being between switched between the two torque settings by at least one actuator. The clutch ass... | 09/09/2008 |
| 7383756 | Torque screwdriver structure A torque screwdriver structure that has a positioning bar, a fixing ring, fixing balls, a sliding tube, a spring and a torque adjusting tuber providing strong mechanism between clutch and torque-adjusting button and being easy in use and simple in assembly when manu... | 06/10/2008 |
| 7371955 | Drum tuning key A drum tuning key comprises a handle portion, a barrel portion defining an axis connected to the handle portion, the barrel portion having internal walls defining a cavity extending inwardly along the axis from an end of the barrel portion, the cavity being square i... | 05/13/2008 |
| 7370539 | Electronic torque wrench with a rotatable indexable display device An electronic torque wrench for engaging a workpiece includes a wrench body having a first end and a second end. A wrench head is disposed on the first end of the wrench body and is configured to engage the workpiece. A grip handle is disposed on the second end of t... | 05/13/2008 |
| 7367891 | Techniques for controlling transfer of torque using detent members responsive to radial force A torque limiting device includes a base configured to reside in a fixed position relative to a drive unit, an input shaft assembly configured to receive a torque load from the drive unit, and an output shaft assembly which is capable of rotating about an axis. The ... | 05/06/2008 |
| 7334509 | Torque limiting driver and assembly A method for assembling a torque-limiting driver, and the resulting drive. The method comprises the steps of providing a handle having a housing, drive assembly, and a testing assembly. The drive assembly is assembled, inserted into the testing assembly and calibrat... | 02/26/2008 |
| 7335208 | Tightening instrument for orthopaedic surgery of the spine The tightening instrument is made up of two parts (2,4) joined to each other by means which are designed to automatically uncouple the said two parts (2,4) by shearing rupture of a pin (8) when a predetermined tightening torque is reached, a fir... | 02/26/2008 |
| 7334647 | Rotary tool An overload clutch assembly for a power tool having two torque settings through which rotary drive is transmitted to a spindle. The overload clutch assembly is capable of being between switched between the two torque settings by at least one actuator. The clutch ass... | 02/26/2008 |
| 7313986 | Tubular-drill bit connect/disconnect apparatus An apparatus for rotating a tubular with respect to a drill bit, e.g., for making or breaking a connection between a tubular and a drill bit, the apparatus, in at least certain aspects including a frame, gripper apparatus connected to the frame for gripping and rota... | 01/01/2008 |
| 7311027 | Electric screwdriver An electric screwdriver capable of reducing the reactive force produced on the occasion of a screw tightening work, etc. The electric screwdriver is designed to transmit the rotational driving force of a first motor to the bit through a bit holder, and it includes a... | 12/25/2007 |
| 7272998 | Torque-limiting mechanism A torque-limiting mechanism is provided for use in a variety of torque-applying tools. The mechanism includes a handle defining a housing in which are disposed a slip gear and a fixed gear. The fixed gear is attached to the housing while the slip gear is attached to... | 09/25/2007 |
| 7243581 | Fixed torque limiting driver A clutch assembly for use with a torque limiting driver. The clutch assembly comprises two relatively rotatable clutch plates, a driving plate and a camming plate, that face one another, with a plurality of rolling members housed between the two members. The driving... | 07/17/2007 |
| 7219583 | Pneumatic screwdriver having an adjustable clockwise torque and a maximum counterclockwise torque A pneumatic screwdriver having an adjustable clockwise torque and a maximum counterclockwise torque includes a transmission seat having at least one steel ball hole and a through hole. The steel ball hole installs a steel ball and has a clockwise rotating area and a... | 05/22/2007 |
| 7216723 | Pulse torque generator and power tool having the same A pulse torque generator utilizing a magnetic coupling, and an electric power tool provided with the pulse torque generator. The pulse torque generator includes an input shaft extending in its axial direction and having a hollow section providing a hollow space, and... | 05/15/2007 |
| 7197968 | Screwdriver with adjustable device to limit transmitted torque A screwing tool with a device to adjust transmitted torque comprises a handle to introduce a torque to the device, which is borne in the hollow of the handle and a drive shaft as an output element of the torque. On the drive shaft inside the handle, two separate cou... | 04/03/2007 |
| 7188557 | Tightening tool It is an object of the invention to provide a technique that can alleviate noise when the clutch comes into engagement. Representative tightening tool according to the invention comprises a motor, a driven shaft driven by the motor, a tool bit driven by the driven s... | 03/13/2007 |
| 7150212 | Torque screwdriver A torque screwdriver including a handle formed with a window. An indicator is disposed in the handle near the window. A scale is axially movably mounted in the handle. The scale is drivingly connected with a compression mechanism disposed at one end of the handle an... | 12/19/2006 |
| 7137324 | Hand-held power screwdriver with a low-noise torque clutch A hand-held power screwdriver includes a low-noise torque clutch (5) for transmitting torque to a tool spindle (4) and formed of claw clutch (6) and ratchet clutch (7), with the ratchet clutch (7) having a rotatably driven first ra... | 11/21/2006 |
| 7127955 | Torque limiting handle A torque limiting tool including an inner handle having a tool coupling portion, a biasing assembly aperture, and at least one radially oriented slot. At least one interface member is located in the radially oriented slot. The interface member includes an elongated ... | 10/31/2006 |
| 7118507 | Automatic reduction-ratio changing apparatus An automatic reduction-ratio changing apparatus comprises a planetary gear mechanism including a sun gear, planet gears, and an internal gear. When a load, which exceeds a predetermined torque, is applied to the internal gear, a pawl of a lock lever is engaged with ... | 10/10/2006 |
| 7100476 | Torque wrench for dental implants A manually-operated, adjustable dental implant torque wrench employs a screw holding sheath for placing a dental screw in a mouth of a patient. A handle offset to avoid opposite teeth to the work area is provided with a bevel gear and pinion set to translate the tur... | 09/05/2006 |
| 7100482 | Electrically powered hand-held screw driver An electrically powered, hand-held screw driver (2) has a housing (4), a depth stop (6) arranged on this housing (4), a drive motor (20), an axially displaceable tool spindle (8) operatively coupled with a tool holder (11... | 09/05/2006 |
| 7082863 | Socket adapter A socket adapter includes a main body, a movable member, an elongated rod, a ball, and an elastic member. Thus, the socket adapter is mounted on a socket to provide a torque on the socket so as to rotate the socket. In addition, the socket adapter is mounted on and ... | 08/01/2006 |
| 7069827 | Torque indication device for hand tools A torque indication device for a hand tool includes a handle with a processing unit connected thereto and a head having a driving member connected thereto is rotatably connected to the handle. The head has an insertion which is inserted into an axial recess of the h... | 07/04/2006 |
| 7055415 | Screwdriver assembly and method with torque measuring scale A screwdriver having a handle and a scale for measuring torque transmitted to a screw and having a beam-type spring for transmitting the screwing torque. The handle and spring have a lost-motion connection therebetween, and there is limit stop in that connection. Th... | 06/06/2006 |
| 7040470 | Overload clutch for protecting a drive train An overload clutch for a torque transmission is disclosed which comprises a rotatable drive member coaxially coupled to a rotating driven member. One of the drive member and driven member, hereinafter referred to as the first member, comprises an annular band delimi... | 05/09/2006 |
| 7032476 | Torque adjustable tool A torque adjustable tool includes an active member and a passive member which is removably connected to the active member by two respective clutch portions. Driving power is connected to the active member and the passive member outputs a torque. A spring is mounted ... | 04/25/2006 |
| 7013769 | Torque adjustable screw driver A torque adjustable screw driver includes a handle and a shank connected to an end of the handle. Two disks are mounted to the shank and each have an inclined end surface. The two respective inclined end surfaces contact each other and one of which includes protrusi... | 03/21/2006 |
| 6978705 | Torque wrench A torque wrench including a wrench main body, a central push rod mounted in the main body and having an escape section, an adjustment handle adjustably fitted with one end of the main body and a restricting member locked on the central push rod. When adjusting the p... | 12/27/2005 |
| 6948410 | Torque wrench with sleeve for locking rotatable handle A torque wrench is provided having body and a handle that is rotatably mounted to the body for adjusting the torque setting, and an axially movable sleeve operable to selectively lock the handle. The sleeve includes a rigid member and an elastomeric member, such as ... | 09/27/2005 |
| 6910540 | Torque control system for electrically driven rotating tools A torque control system for electrically driven rotating tools capable of always properly and efficiently effecting constant-torque tightening of screws or the like and capable of easily achieving the miniaturization of the whole device and the improvement in torque... | 06/28/2005 |
| 6892611 | Screwdriver It is an object of the invention to provide an electric screwdriver that can efficiently transmit torque for tightening a screw and stop the torque transmission. A representative screwdriver may include a motor, first and second rotating members, a tool, a torque tr... | 05/17/2005 |
| 6851343 | Screwdriver A representative screwdriver may comprise a motor, a body, a first spindle, a first clutch member, a tool bit, a second spindle, a second clutch member, a clutch engagement preventing member. The representative screwdriver may be selectively operated in one of a fir... | 02/08/2005 |
| 6832533 | Torque convertible adapter for driving tools A torque convertible adapter for driving tools includes a tubular body having an rectangular extension on rear end connected to a handle, a threaded outer periphery, a circular receiving space in front end including three pair of circular recesses in different depth... | 12/21/2004 |
| 6752050 | Wrench with a fixed maximum operational torque A wrench includes a rod, a retainer, a pressing member, and a casing for receiving the retainer and the pressing member. The rod includes a driving portion on an end thereof for engaging with a fastener. The retainer has a central portion securely mount to the rod t... | 06/22/2004 |
| 6701813 | Wrench with a fixed maximum operational torque A wrench comprises a rod, a retainer, a pressing member, and a casing for accommodating the retainer and allowing relative pivotal movement between the casing and the retainer. The pressing member is received in the casing and slidable along a longitudina... | 03/09/2004 |
