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Match Document Document Title
8172003 Overload protection device and machine tool having such overload protection device  
A portable device having an overload protection device for motor-operated tools has a drive motor, a drive shaft connected to the drive motor and driven in rotation by the drive motor, and an...
8172004 Automatic transmission for a power tool  
A transmission assembly for a power tool comprises a first transmission path comprising a high speed transmission path and a second transmission path comprising a low speed transmission path....
8146676 Multifunctional power tool  
The invention related to a multi-functional power tool, comprises an housing, a motor set in the housing, a main shaft driven through the rotation of the motor, a working shaft extended outside the...
8146463 Screw driver  
A screw driver capable of avoiding co-rotation of an end bit and a motor in case of sharp shooting the end bit with a groove in a head of a screw. A co-rotation preventing mechanism is engageable...
8136607 Device having a torque-limiting unit  
A device has a torque-limiting unit of a power drill, wherein torque-limiting unit is intended to limit a screwdriving moment in a screwdriving function; and a power drill is provided with the new...
8122971 Impact rotary tool with drill mode  
An impact rotary tool is provided that is switchable between an impact mode where the tool delivers an impacting torque on an output tool and a drill mode where the driver delivers a smooth output...
8104546 Hand-held power tool with torque limiter  
The invention relates to a hand tool machine with a torque limiter (2) enabling a user to set a maximum torque which is transmitted by a motor drive (4) to a tool carrier (6). According to the...
8087474 Hammer drill  
A hammer drill having a clutch pin and a clutch mechanism is provided. By switching the clutch mechanism, a selection can be made between a hammer drill mode and a hammer mode. The clutch pin is...
8083006 Hand-held power tool  
A hand-held power tool, in particular an electrical hand-held power tool (1), includes a drive motor (4), a tool shaft (14), and a first overload clutch (19) for limiting the maximum torque that...
8074731 Impact tool  
An impact tool (100) includes a spindle (11), a motor (1), a rotational impact system (10), a current detecting unit (32), and a current control unit (31). The spindle extends in an axial direction...
8066082 Air driver device  
An air driver device having a simple construction, being of a compact size, and having excellent durability. The air driver device is designed to shut off a supply of compressed air to an air...
8051920 Impact drill  
An impact drill includes a housing having an accommodation chamber and a through hole extending from the accommodation chamber to the outside space, a driving mechanism mounted in the accommodation...
8038044 Surgical instrument with flexible drive mechanism  
A drive mechanism for use with a surgical instrument includes a rotatable drive member, a crank operatively coupled to the drive member; a clutch operatively coupled to the crank, wherein...
8006776 Sliding pressure control valve for pneumatic hammer drill  
A pneumatic device control apparatus and method comprising a ported valve slidably fitted over a feed tube of the pneumatic device, and using a compliant biasing device to constrain motion of the...
8002098 Torque responsive release clutch for a power nutrunner  
A torque responsive release clutch intended for a power nutrunner and comprises a driving clutch half (11) and a driven clutch half (10) coupled to each other for torque transfer by means of...
7987922 Automatic gear shifting power tool  
While a load torque applied to a tool shaft is lower than a predetermined value, a moving member is maintained at a first position, and a sun gear is rotated integrally with an internal gear. When...
7980324 Housing and gearbox for drill or driver  
A power tool including a motor, an output member and a transmission disposed between the motor and the output member. The transmission includes a ring gear with opposite axial end faces. The power...
7900714 Power tool with torque clutch  
A clutch arrangement for use in a power tool having a multi-speed transmission assembly. The clutch arrangement includes a clutch member and a follower. The clutch member is coupled to a member of...
7900713 Main shaft locking mechanism  
A main shaft locking mechanism includes a fixing ring, a main shaft and detents. The main shaft includes an equilateral portion that has an equilateral cross section. A number of the corners of the...
7896097 Electric power tool  
An electric power tool includes a planetary gear reduction mechanism, a switch mechanism, an impact mechanism, a hammer mechanism, a torque fixing mechanism, and a torque adjusting mechanism. The...
7861797 Hand-held machine tool with slip clutch  
An at least partially rotating and axially percussive hand-held machine tool (4) has an impact mechanism (5) with a guide tube (6) in which a percussion piston (7) is driven in an axially...
7828074 Hammer drill  
A hammer drill includes a motor; a spindle rotatingly driven by the motor and holding an output bit; a motion conversion member for converting rotational movement of the motor to reciprocating...
7806200 Power tool with a slip clutch  
A power tool includes an output member (8) projecting from the tool housing (4), a drive (6) located in the housing for rotating the output member (8), and a slip clutch (22) for transmitting...
7762349 Multi-speed drill and transmission with low gear only clutch  
A multi-speed drill includes a housing with a motor including an output member. A constant mesh parallel axis transmission can be disposed in the housing and can include a high speed and low speed...
7753248 Surgical instrument with flexible drive mechanism  
A drive mechanism for use with a surgical instrument includes a rotatable drive member, a crank operatively coupled to the drive member; a clutch operatively coupled to the crank, wherein...
7712546 Power tool having torque limiter  
It is an object of the invention to provide an effective technique for avoiding the influence of reaction during tightening operation in the rotary fastening tool. Representative rotary fastening...
7694750 Hammer drill  
A hammer drill includes a motor; a spindle rotatingly driven by the motor and holding an output bit; a motion conversion member for converting rotational movement of the motor to reciprocating...
7673702 Impact wrench  
An impact mechanism includes a shaft, a hammer and an anvil coupled to the hammer. The shaft has a first helical groove and the hammer has a second helical groove. A ball is received in the first...
7665392 Tightening tool  
Tightening tools is provided with a pair of clutch members disposed between a motor and a tool bit. The pair of clutch members is provided with a first engaging portion and a second engaging...
7658238 Impact drill  
An impact drill for boring a workpiece includes a main frame, a motor housed in the main frame, a spindle movably supported by the main frame and rotatable by the motor and movable in its axial...
7658239 Power tool, drive assembly, and method of operating the same  
A power tool including a drive assembly including a first clutch assembly having an engaged configuration, in which the first clutch assembly transfers a drive force from a motor shaft to a...
7644783 Power tool gear-train and torque overload clutch therefor  
A power tool transmission is described in which an overload clutch mechanism is arranged to provide a relatively compact power tool. A torque adjustment dial is arranged between the visible...
7591326 Power tool  
It is an object of the invention to provide an effective technique for improving the durability of a torque limiter utilized in a power tool. The object is achieved by a representative power tool...
7588094 Power hand tool  
A power hand tool includes a housing; an electric motor mounted in the housing for provide a rotary motion; a transmission gear set is mounted in the housing and connected with the electric motor;...
7565935 Powered tap driver with rotary control structure  
The tap driver is configured to be hand-held. It has a tap-holding chuck and a motor to drive the chuck. An external switch rocks forward to rotate the motor in the tapping direction and backward...
7556103 Tightening tool and tightening tool management system  
A fastening tool with a clutch for shutting off transmission of torque, capable of self-diagnosing fastening torque of a screw or the like at low cost without using expensive elements such as a...
7506694 Rotary tool  
A hand held motor driven electrically powered tool, in particular a rotary hammer, comprising a spindle (40) for rotatingly driving a tool or bit (68), a spindle rotary drive train (14, 5, 10) for...
7455121 Power tool  
A power tool includes an impact damping mechanism for damping an impact in a direction of rotation of a speed reduction mechanism portion 8.
7455123 Hand-held power tool with a torque-limiting unit  
A hand-held power tool has a motor output shaft, a tool driver, and a torque-limiting unit with which a maximum torque transferred from the motor output shaft to the tool driver is adjustable by an...
7452304 Multispeed power tool transmission  
A power tool with a housing, a motor, an output spindle and a transmission assembly with a transmission and a speed selector. The transmission includes a plurality of planetary transmission stages...
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...
7413029 Screw fastening machine  
The present invention aims to provide a screw fastening machine for reliably switching and changing a driving force transmitting path with the seating on a work as a reference. According to the...
7410007 Impact rotary tool with drill mode  
An impact rotary tool is provided that is switchable between an impact mode where the tool delivers an impacting torque on an output tool and a drill mode where the driver delivers a smooth output...
7395874 Slaving and blocking device  
A slaving and blocking device for transmitting a torque from a driving part to a driven part and for stopping the driven part at a torque engaging the driven part has a slaving unit fixable on the...
7380613 Electric power tool  
An electric power tool is provided which prevents malfunction with excellent operability even when one operation mode among various modes is selectable. In a gear case of a housing, there are...
7334715 Electric fastener driver  
A stationary annular abutting member 14E is provided with a first projecting section that operates as part of a ratchet mechanism. A rotational flange section is provided with a second projecting...
7314097 Hammer drill with a mode changeover mechanism  
A hammer drill/driver with a motor having an output member, a planetary transmission, a clutch assembly and a clutch bypass. The planetary transmission, which includes a ring gear, receives rotary...
7234536 Power screwdriver  
A power screwdriver is disclosed having a drive which is coupled via a clutch, disengaging as a function of torque, to a tool drive shaft for driving a tool. The screwdriver comprises an electronic...
7228899 Warning device and method to prevent clutch burning  
This invention is generally directed towards a system designed to assist the rig operator by alerting him/her that the air pressure is too low to be using the drum clutch, to provide a log for...
7220211 Multispeed power tool transmission  
A multi-speed transmission assembly for a rotary power tool. The transmission assembly includes a plurality of transmission stages, with at least two of the transmission stages employing a movable...
Matches 1 - 50 out of 250 1 2 3 4 5 >