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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...
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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;...
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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...
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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...
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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...
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7469753 |
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...
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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...
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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.
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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...
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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...
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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...
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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...
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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...
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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...
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7334715 |
Electric fastener driver
A stationary annular abutting member 14 E 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...
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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...
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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...
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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...
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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...
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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...
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7168503 |
Power hand tool
A power hand tool includes a housing that houses a motor, a transmission gear set, a torque control mechanism and an impact mechanism. The torque control mechanism has an adjustment device that is...
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7168505 |
Rotary tool
It is an object of the invention to provide an effective technique for reducing wear of sliding contact areas in an engagement clutch of a rotary tool. According to the invention, a representative...
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7165663 |
Power screwdriver with low-noise torque clutch
A power screwdriver ( 1 ) with a rotationally driven, axially displaceable mounted tool spindle ( 2 ) with a low-noise torque clutch ( 3 ) which comprises a ratchet-spring biased ratchet coupling (...
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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...
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7101300 |
Multispeed power tool transmission
A portable power tool with a housing, a motor having a motor output member, a driven member and a transmission. The transmission, which is located in the housing, is configured to receive a rotary...
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7093679 |
Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table
A drilling machine drills foundation holes known as drilled shafts or bored piles with a drilling tool attached to an end of a kelly. The kelly is rotated with a rotary drive. The rotary drive has...
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7077255 |
Pneumatic power nut runner with automatic shut-off
A pneumatic power nut runner with a rotation motor which is connected to a drive train including a torque responsive release clutch ( 10 ) and a disengageable torque non-responsive clutch ( 11 ), a...
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7063173 |
Spindle unit with switchable gear, and method for using the spindle unit
A system and a method are described that facilitate gear switching of a motor-driven spindle. A spindle head shaft is driven by a drive shaft via a gear mechanism in a first gear position. The...
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7055620 |
Hand-held machine tool
The invention is based on a hand power tool having an electric motor ( 12 ) located in a housing ( 10 ), via which an insertable tool ( 16 ) situated in a tool mount ( 14 ) is capable of being...
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7053567 |
Power tools
It is an object of the invention to provide a technique to effectively prevent a power tool from being adversely affected when a battery is removed from the power tool. According to the present...
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7051820 |
Rotary hammer
An electrically powered rotary hammer comprising a rotary drive mechanism including a spindle drive gear rotatably mounted around the spindle for rotationally driving the spindle, or a part of the...
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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...
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7025151 |
Device for limiting a torque to be transferred
The invention relates to a device for limiting torque to be transferred, having first and second shafts having a longitudinal axis; at least first and second transfer elements arranged coaxial with...
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7011165 |
Rotating electric hand tool implement with safety routine
An electric hand tool apparatus ( 1 ) for driving a drill-like tool, which carries out an at least partial rotational movement, has within a housing ( 2 ), an electric motor ( 4 ) without or free...
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6981557 |
Process for controlling an axially hammering and rotating electric hand-held machine tool
A control process for an at least partially axially hammering and rotating electric hand-held machine tool ( 1 ) in which an electromagnetic clutch ( 4 ) arranged in the flow of force between an...
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6974107 |
Thrust reverser system actuator having an integral torque limiter
A thrust reverser system actuator assembly is provided that includes a torque limiter to limit the number of torque that may be applied to the actuator assembly. The actuator assembly includes an...
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6941724 |
Screw capping head
A screw capping head for use in a rotary capping machine includes a housing defining a longitudinal axis, a spindle rotatably carried by the housing, a first ring of magnets fixed within the...
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6929074 |
Elbow-type power hand tool
An elbow-type power hand tool including a housing, a motor, a planet gear set, a transmission shaft, and a torque controller mounted in the housing for controlling output torque of the transmission...
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6926095 |
Power tool transmission device
A power tool transmission device includes a base, a switch portion, a vibration member, a press portion, a transmission shaft and a casing. When the projections press the position plates, bosses on...
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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...
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6892827 |
Electrically operated vibrating drill/driver
A vibrating drill/driver includes a motor for driving a spindle about the longitudinal axis thereof, a switching handle supported for rotation about a longitudinal axis thereof, a clutch mechanism...
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6874585 |
Power drill
The present invention relates to a power drill which comprises a spindle and a rear bearing mounted on the rear portion of the spindle. A fixed gear wheel is connected to a gearbox and a movable...
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6863165 |
Overload protection arrangement for a rotatable power tool
An overload protection arrangement for a portable power tool includes a magnetic clutch ( 5 ) arranged in a drive train of the power tool between an electromotor ( 1 ) and a tool chuck ( 3 ),...
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6857983 |
First stage clutch
A clutch assembly for limiting a torque output of the power tool. The clutch assembly includes an annular rotatable clutch member, which is coupled to the ring gear of a planetary gearset in a...
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6814158 |
Hand-guided drilling or percussion drilling machine
In a hand-guided percussion drilling machine an arresting coupling non-rotatably coupling a drilling spindle relative to a machine housing is arranged on an intermediate shaft rotatably connected...
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6793023 |
Hand power tool
The invention is based on a hand power tool having a tool mount capable of being driving in an at least rotating fashion via a drive motor and a drilling spindle ( 13 ), which said tool mount...
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6789631 |
Engine powered torque wrench
An engine-powered torque wrench ( 18 ) has a loop handle ( 19 ) that is orthogonal to a torque rod ( 22 ) of a torque handle. The engine-powered torque wrench has a heat engine ( 1 ) which rotates...
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6769593 |
Synchronous drive pin clutch
This invention relates to the design of a pin clutch to allow for coupling of a rotational shaft to an output mechanism in a synchronous fashion. Specifically, this is related to impacting or...
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6745883 |
Electric power tool
In an electric power tool having a clutch ring for adjusting a fastening torque, an outer member 3 which are lower in hardness than a base member 2 of the clutch ring 1 has a plurality of...
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6739225 |
Screw driving tool
A screw driving tool comprises a housing ( 1 ), a drive ( 2 ), a drive spindle ( 3 ), a torque coupling ( 4 ) between the drive ( 2 ) and the drive spindle ( 3 ), as well as an adjustment mechanism...
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