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DRIVE ADJUSTABLE TO COMPLETELY CHANGE KIND OF DRIVE

Subclass of:

173 - Tool driving or impacting

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
173048000 Adjustable to impacting device 62
Entries
DocumentTitleDate
20100071922ROTARY TOOL HAVING A MANUAL RATCHET MECHANISM - A rotary power tool according to the invention includes a manual ratchet mechanism having a driveshaft driven by a motor, an output shaft, a disengageable shaft coupling element for mechanically coupling the driveshaft to the output shaft, and a disengageable ratchet element for blocking rotation of the output shaft unidirectionally. The invention provides that one of the coupling element and the ratchet element is engaged, the other one is disengaged.03-25-2010
20100096153HAND MACHINE TOOL - The invention relates to a hand machine tool, in particular, a hammer drill or chisel, having a gearbox housing and a gearbox unit with a switching device. The switching device includes a switching spring and an operating unit which may be mounted in the gearbox housing with a transfer element. According to the invention, the switching spring has a housing region provided for housing the transfer element of the assembled operating unit, on assembly of the gearbox housing and the gearbox unit.04-22-2010
20130032370ELECTRIC POWER TOOL WITH VIBRATION MECHANISM - An impact driver with a vibration mechanism includes a vibration switching ring externally fitted to a second cam in the forward position in such a manner that an inner protrusion on the inner circumference is latched a protrusion on the outer circumference of the second cam so that the rotation of the second cam is restricted. Further, a coil spring is provided for biasing the vibration switching ring to the forward position. A link plate provided between the mode switching ring and the vibration switching ring latches onto the front surface of the vibration switching ring and engages an engaging protrusion at the rear end with a mode switching ring. The link plate moves forward or backward to a first position where the vibration switching ring moves to the forward position or a second position where the vibration switching ring moves to the backward position.02-07-2013
20130087355Impact Tool - An impact tool (04-11-2013
20120222878POWER TOOL WITH TRANSMISSION CASSETTE RECEIVED IN CLAM SHELL HOUSING - A power tool that includes a housing and a transmission assembly. The housing has a pair of mating housing shells that cooperate to define a handle and a pair of first mounts. Each of the first mounts includes a pair of circumferentially spaced-apart ribs. At least one of the circumferentially-spaced apart ribs is contoured to define a notch. The transmission assembly has a transmission sleeve into which a multi-speed reduction gearset is received. The transmission sleeve has a pair of second mounts. Each of the second mounts includes a boss that is configured to be received in an associated one of the notches between a corresponding pair of the circumferentially-spaced apart ribs to thereby inhibit axial and rotational movement of the transmission sleeve relative to the housing.09-06-2012
20130161040POWER TOOL - A power tool having a housing assembly and a drive component that is housed in the housing assembly. The housing assembly has a first housing component, a second housing component, at least one set of mating conically-shaped features, and at least one fastener. Each set of mating conically-shaped features includes a first cone portion and a second cone portion. The first cone portion of each set of mating conically-shaped features is coupled to the first housing component and has a frusto-conically-shaped exterior surface. The second cone portion of each set of mating conically-shaped features is coupled to the second housing component and has a frusto-conically-shaped interior surface that is engaged with the frusto-conically-shaped exterior surface of an associated first cone portion. Each fastener is received through an associated pair of the first and second cone portions and is threadably engaged to one of the first and second housing components.06-27-2013
20110214891HANDHELD POWER TOOL HAVING A SWITCHABLE GEAR - A handheld power tool has a switchable gear having at least two gear stages which are engaged via an adjustable switching member, the switching member being held in a latching position with a latching member in a first gear stage and in an unlatched position in a second gear stage. The latching member is rotatably mounted in the housing within a limited angular section between two end stop positions.09-08-2011
20110079408HANDHELD POWER TOOL HAVING A SHIFTABLE MECHANISM - A handheld power tool with a shiftable mechanism, which is adjustable between two operating positions, has a coupling spring that is coupled with an adjustable shifting member of the mechanism. The coupling spring is embodied as a metastable spring.04-07-2011
20090200053POWER TOOL - This invention relates to a power tool one having a driven member 08-13-2009
20100084151ELECTRICAL DEVICE WITH LOCKED-ON ROTATABLE OPERATING ELEMENT - The invention relates to an electric device, and in particular to an electric hand-held machine tool, having a housing, a rotatable actuating element arranged outside the housing and a functional switch element, arranged inside the housing and connected to the actuating element in a rotationally fixed manner. According top the invention, it is provided that the actuating element and the functional switch element are locked together through an opening in the housing.04-08-2010
20110180288Torque system of power tool - A torque system of a power tool includes a combination of a first body and a second body, in which a toothed ring is assembled; and a mode selecting assembly, a torque adjusting module and control pins disposed on the second body. The torque system further includes restricting mechanisms formed on the second body, and the control pins are respectively disposed in the restricting mechanisms. One side of the control pin has a stopper block, and the restricting mechanism includes a first stopper, a second stopper and a through hole. When the control pin is driven to rotate and the stopper block faces the first stopper or the through hole, the object of switching each operation mode is achieved.07-28-2011
20130213680POWER TOOL HAVING VARIABLE SPEED DEVICE - A power tool includes a variable speed device which can be set in an auto mode or a manual mode. The power tool does not need the user to set the speed when it is operated at the auto mode. The power tool is reset to be the high-speed mode when it is activated. The speed is reduced along with the working load so as to output high torque, maintain the best working efficiency and protect the power tool under the operative status. The power tool can be set to the manual mode so as to work in a single type of function.08-22-2013
20090101376MODE CHANGE MECHANISM FOR A POWER TOOL - A power tool (04-23-2009
20100163261MULTI-SPEED POWER TOOL TRANSMISSION WITH ALTERNATIVE RING GEAR CONFIGURATION - A power tool with a housing, a multi-speed transmission and a switch mechanism. The switch mechanism has an actuator, a rail, a switch and first and second springs. The actuator is movable along a longitudinal axis of the transmission between a plurality of positions and is engaged to one or more members of the transmission at each of the plurality of actuator positions such that the transmission operates in a corresponding one of a plurality of different overall speed reduction ratios. The actuator is non-rotatably but axially slidably engaged to the housing. The rail is fixedly coupled to the actuator and is received through the switch such that the switch is mounted on the rail for sliding movement thereon. The first spring is disposed between the actuator and the switch and biases the switch away from the actuator. The second spring is disposed between the switch and an end of the rail opposite the actuator and biases biasing the switch away from the end of the rail.07-01-2010
20130186662Progressive Dual-Shaft Drill Head and Systems and Methods Thereof - Implementations of the present invention relate to system and apparatus for increasing and lowering speed and torque transferred to a drive shaft from a drive source. In particular, the present disclosure relates to a system that allows engagement and disengagement of low and high gears with a single shifter that can move in a single direction to shift between gears.07-25-2013
20100186976Changeover operation device - A changeover operation device, for changing over the positions of at least two components to establish three or more speed modes in a speed changer mechanism accommodated within a housing having an opening, includes operation handles arranged in a corresponding relationship with the components. Each of the operation handles is movable between two specified positions along a specified operation direction to change over the positions of the components. The operation handles are continuously arranged within the opening of the housing, one of the operation handles being partially overlapped with the other.07-29-2010
20100300714MULTI-MODE DRILL WITH AN ELECTRONIC SWITCHING ARRANGEMENT - A drill includes a housing with a motor coupled to an output spindle via a transmission. A mode collar can be rotatably mounted on the housing for movement that corresponds to different modes of operation. The mode collar can be coupled to an electronic switch to operate a movable member thereof. The coupling can include a switch housing including a slide member, an actuation spring member and a return spring member. The mode collar can have a cam surface and a cam follower in the form of a shift pin that moves the slide member, causing actuation of the switch. The actuation spring member provides a biasing force that is sufficient to overcome a biasing force of a switch spring member to move the movable member into the actuated position. The mode collar can also enable and disable contact between a fixed hammer member and a movable hammer member mounted around the output spindle.12-02-2010
20120031637DEVICE FOR POWER TOOL PREVENTING AXIAL VIBRATION IN REVERSE ROTATION - A non-vibration output device in reverse rotation includes a movable ratchet gear, a stationary ratchet gear having ribs and a locking member having pawls. Each rib has an inclined surface. The locking member is move to control the engagement or disengagement between the pawls and the ribs. When the pawls are not engaged with the ribs, the stationary ratchet gear is rotatable. The output shaft can rotate in two directions. When the pawls are engaged with the ribs, the stationary ratchet gear is fixed. The movable ratchet gear rotates in the forward direction and interference happens between the movable ratchet gear and the stationary ratchet gear to generate axial vibration. When the movable ratchet gear rotates in the reverse direction, the stationary ratchet gear is disengaged from the movable ratchet gear so that no axial vibration is generated.02-09-2012
20110073337POWER 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 member. The clutch member is coupled to a member of the transmission assembly that is proximate the torsional input of the transmission assembly and which must be in a non-rotating position to permit the transmission assembly to perform a torque multiplication operation. The follower member is biased into engagement with the clutch member to inhibit relative rotation therebetween. As the clutch member and the transmission member are coupled to one another, the transmission assembly is able to perform a torque multiplication operation. When, however, the torsion that is exerted onto the clutch member is sufficient to overcome the frictional engagement between the follower and clutch members, the clutch member, and the transmission member, rotate, thereby inhibiting the capability of the transmission to continue to perform the torque multiplication operation.03-31-2011
20100236801IMPACT TOOL - It is an object of the invention to provide a technique that contributes to realizing both the switch selecting function and the handle vibration-proofing function, in an impact tool which can switch an operation mode of a tool bit. An impact tool includes a motor 09-23-2010
20110147023HAND-HELD POWER TOOL - The invention relates to a hand-held power tool with a drive shaft embodied in the form of a spindle shaft, which is connected to a tool-clamping device. The drive shaft, which is coupled to a drive motor, cooperates with a torque clutch. The torque clutch is provided with a clutch-adjusting ring that is coupled to a transmission element that cooperates with at least one clutch-adjusting device in order to adjust a torque. The transmission element is situated in an axially and/or radially movable fashion on the outer circumference of a housing component. According to the invention, in at least one position of the clutch-adjusting ring, the transmission element protrudes axially beyond the housing component in the direction toward the tool-clamping device.06-23-2011
20110147022POWER DRILL - The invention relates to a power drill, having a tool-clamping device that is fastened to a spindle shaft, having a torque clutch that includes an axially movable clutch plate on which an axial force is exerted by a plurality of compression springs that cooperate at least indirectly with an adjusting nut situated on a housing component. The compression springs are accommodated in first recesses embodied in the longitudinal direction of the housing component. A device for axially moving an axial bearing situated on the spindle shaft, is provided at the end of the spindle shaft oriented toward the tool-clamping device. According to the invention, on its side oriented toward the clutch plate, the device for axially moving the axial bearing has at least one actuating section that is situated in a second recess of the housing component and on the side oriented toward the clutch plate, cooperates with an adjusting element for the device.06-23-2011
20110147021Handheld power tool, in particular cordless handheld power tool - The invention is based on a handheld power tool, in particular a cordless handheld power tool, having a gear unit and having a switch device for switching the gear unit. The switch device is provided with at least one user-control switch element, and at least one retaining element that is provided for acting on the user-control switch element in at least one position of the user-control switch element, with a force in the direction of at least one switch position, or for keeping the user-control switch element in at least one switch position. According to the invention, the retaining element is secured to a gear element of the gear unit.06-23-2011
20110036605ROTARY POWER TOOL OPERABLE IN FIRST SPEED MODE AND A SECOND SPEED MODE - A rotary power tool operable in a first speed mode and a second speed mode comprising a motor shaft (02-17-2011
20110000691POWER TOOL - The invention relates to a power tool, in particular a hand power tool (01-06-2011
20110030984MAIN 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 equilateral portion is equal to that of the detents. The detent has an exterior side and an interior side opposite to the exterior side. The interior side includes two corner protrusions protruded out from two ends thereof and a concave portion defined between the two corner protrusions. The corners of the main shaft are received in the concave portions of the detents. When the main shaft is manually driven to rotate, the corners of the main shaft drive the detents to deviate. Therefore, the exterior sides of the detents interfere against the fixing ring. Then the detents prevent the main shaft from further rotating, thus locking up the main shaft.02-10-2011
20110000692HAND-HELD MACHINE TOOL - The invention relates to a hand-held power tool with a tool clamping unit and an adjustment ring. The invention provides that the adjustment ring protrudes forwards in an axial direction beyond an axially rear end of the tool clamping unit, at least when the tool clamping unit is completely open. The invention further relates to an adjustment ring for a hand-held power tool.01-06-2011
20100319944ELECTRIC POWER TOOL - An electric power tool has an electric drive motor whose speed is adjusted by means of an adjusting device. The adjusting device includes an adjusting element movably supported on the housing of the power tool. The adjusting element is associated with a strain measuring device that produces a measurement signal that is used to adjust the drive motor in response to a movement of the adjusting element.12-23-2010
20100200257Mechanical Assembly For A Power Tool - The invention relates to a mechanical assembly for a power tool, and a power tool incorporating the mechanical assembly. The mechanical assembly includes a first member having a first axis and a first engagement portion inclined relative to the first axis and a second member having a second axis and a second engagement portion inclined relative to the second axis. The first and second engagement portions engage each other by movement of the first and second members relative to each other in the direction of at least one of the axes. The power tool includes a power tool body and a rotatable driven member being operable for releasably gripping a working element, the driven member having a drive mode in which rotation of the driven member drives the working element relative to the power tool body and an adjustment mode in which rotation of the driven member causes the driven member to either grip the working element or release the working element or both. The power tool also includes means for adjusting the driven member between the modes which includes the mechanical assembly wherein the first and second engagement portions engage each other by movement of the first and second members relative to each other in the direction of at least one of the axes and wherein engagement between the first and second engagement portions adjusts the driven member to the adjustment mode and disengagement between the first and second engagement portions adjusts the driven member to the drive mode. The power tool may also include a first torque control means that is operable for controlling the amount of torque applied to the driven member by the power drive when in the drive mode and a second torque control means that is operable for controlling the amount of torque applied to the driven member by the power drive when in the adjustment mode. The power tool may further include a gearbox with one or more speeds and a switch with two or more positions that is operable for selecting the modes, the gear speeds and the first and second torque control means.08-12-2010
20110259620HAND-HELD TOOL MACHINE HAVING A SWITCHABLE MECHANISM - A hand-held tool machine has a switchable mechanism having at least two operating positions, which are able to be selected via an adjustable operating element, the operating element being coupled to an adjustable switching element via a coupling element. The coupling element is implemented as bistable coupling spring.10-27-2011
20100025059ELECTRICAL TOOL WITH GEAR SWITCHING - An electrical tool, in particular drill and chiselling hammer, including a drive shaft and two driven members. The drive shaft is operatively connectable with the driven members by a respective one of a pair of coupling sleeves. The coupling sleeves are actuatable by a rotatable and mechanical actuating element, in particular a mechanical rotary switch. The actuating element of the electrical tool includes a transmission means or a transmission portion that is stationary with respect to the actuating element and which is contactable directly with the respective coupling sleeve for actuating the coupling sleeves.02-04-2010
20120037388OUTPUT DEVICE FOR POWER TOOL HAVING PROTECTION MECHANISM - An output device for a power tool includes an output unit, a stationary ratchet gear unit, a spring disposed between the output shaft unit and the stationary ratchet gear unit, a locking member having pawls, a case accommodating the aforementioned parts and a control device threadedly connected to the case. The output unit includes an output shaft with a first bearing and a movable ratchet gear which have movable ratchet teeth facing stationary ratchet teeth of a stationary ratchet gear. The stationary ratchet gear includes ribs and each rib has an inclined surface. When the pawls are not engaged with the ribs, the output shaft can outputs power in a form of rotation in both directions. When the pawls are engaged with the ribs, the output shaft outputs power in a form of rotation in a forward direction combined with vibration or rotation in a reverse direction without vibration.02-16-2012
20090173510MULTISPEED POWER TOOL TRANSMISSION - 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 member. The clutch member is coupled to a member of the transmission assembly that is proximate the torsional input of the transmission assembly and which must be in a non-rotating position to permit the transmission assembly to perform a torque multiplication operation. The follower member is biased into engagement with the clutch member to inhibit relative rotation therebetween. As the clutch member and the transmission member are coupled to one another, the transmission assembly is able to perform a torque multiplication operation. When, however, the torsion that is exerted onto the clutch member is sufficient to overcome the frictional engagement between the follower and clutch members, the clutch member, and the transmission member, rotate, thereby inhibiting the capability of the transmission to continue to perform the torque multiplication operation.07-09-2009
20120305276CONTROL ELEMENT FOR A HAND POWER TOOL - An electric hand power tool includes a cylindrical device section, a control element displaceable about the cylindrical device section, and an electric scanning device disposed at the device section and configured to determine a rotary position of the control element. The scanning device is configured to optically scan the rotary position.12-06-2012
20100212923POWER TOOL - A power tool includes a drive motor and at least one auxiliary device, which is coupled to the drive motor, for activating at least two different operating states. The drive motor and the at least one auxiliary device are controllable using at least one operating device. The output of the drive motor is changed when the at least one auxiliary device is activated. As a result, the operating forces are reduced when switching between operating states, and the load on components is reduced.08-26-2010
20120132450SHIFTABLE DRIVE INTERFACE FOR ROBOTICALLY-CONTROLLED SURGICAL TOOL - A surgical instrument including an end effector that has a selectively reciprocatable implement movably supported therein. The implement is selectively advanceable in a distal direction upon application of a rotary actuation motion thereto and retractable in a proximal direction upon application of a rotary retraction motion thereto. An elongate shaft assembly is coupled to the end effector and is configured to transmit the rotary actuation motion and rotary retraction motion to the reciprocatable implement from a robotic system that is configured to generate the rotary actuation motion and said rotary retraction motion.05-31-2012
20100270045HANDHELD POWER TOOL - The invention relates to a portable power tool, in particular a boring and/or chisel hammer, with an intermediate flange and a gear unit which has switch mounted on the intermediate flange. It is proposed that the switch be provided to switch at least three gear stages of the gear unit.10-28-2010
20120222879MULTI-SPEED POWER TOOL - A power tool that includes a transmission assembly with a transmission sleeve, a multi-speed reduction gearset, and a speed selector mechanism. The transmission sleeve includes a tubular body into which the multi-speed reduction gearset is received. The multi-speed reduction gearset has a first movable member that is movable in an axial direction to at least partly coordinate operation of the multi-speed reduction gearset in a plurality of different speed ratios. The speed selector mechanism includes a first actuator and a rotary selector cam. The first actuator extends through the transmission sleeve and engages the first movable member. The rotary selector cam is rotatably mounted on the tubular body and defines a pair of first cam slots into which the first actuator is received. The first cam slots are closed and are configured to coordinate movement of the first actuator to correspondingly coordinate movement of the first movable member.09-06-2012
20110048750ROTARY POWER TOOL - A rotary power tool having a tool housing, an internal housing within the tool housing, and a switch assembly that is substantially within the tool housing. According to the invention, the switch assembly is supported by the internal housing and is movable between at least two positions for selecting between at least two tool operational modes. The internal housing is embodied by at least one blocking element that extends towards the tool housing and limits the overall range of motion of the switch assembly.03-03-2011
20110220377POWER TOOL GEAR DEVICE - A power tool gear device has at least one first and one second gear stage, and a switching element which may be moved by an operator using an actuating element. The switching element at least partially surrounds at least one gear stage in at least one operating position along a circumferential direction and is configured to switch between a first and a second operating position. The switching element includes at least one first component and one second component.09-15-2011
20120318547POWER TOOL WITH TORQUE CLUTCH - A power tool with a multi-speed transmission and a switch mechanism for shifting the transmission between a plurality of different speed ratios. The switch mechanism includes a single switch member that is slidably mounted on the housing. The power tool further comprises a clutch having a clutch profile that is coupled to a ring gear of the transmission. In some examples, the power tool further comprises a clutch that is configured to interact with a first stage of the transmission.12-20-2012
20120138324TOOL FOR CRUSHING COKE - A tool for crushing coke using high-pressure water is attached to a drilling rod through which water flows at high pressure. The tool further a control device for directing the water into either drilling nozzles or cutting nozzles depending on the rotational position of the control device. A switching element driven by water pressure engages the control device to cause the control the device to rotate from one rotational position to another rotational position, thereby changing the tool from cutting to drilling or vice versa.06-07-2012
20130175066POWER TOOL WITH TORQUE CLUTCH - A power tool that includes a housing, a motor, a trigger, a multi-speed transmission and a torque clutch. The housing define a handle. The motor is coupled to the housing. The trigger is coupled to the housing and configured to control operation of the motor. The multi-speed transmission is configured to transmit rotary power between the motor and the output spindle and includes a plurality of planetary stages with a first stage and a second stage that receives rotary power from the first stage. The first stage has a first internally toothed gear element and the second stage having a second internally toothed gear element. The torque clutch limits torque output from the multi-speed transmission to the output spindle. The torque clutch is configured to alternatively ground the second and third internally toothed gear elements to the housing based on a speed ratio setting of the multi-speed transmission.07-11-2013
20130133908POWER DRILL WITH ADJUSTABLE TORQUE - A typical power drill has a housing, a drive spindle that can be driven by a motor, and a chuck including a chuck body in which jaws are guided that are adjustable by a threaded connection provided between a driver and a threaded sleeve. A drill spindle and an axially displaceable drive stem can be driven by a motor from its end facing the drive spindle by planetary gearing gearing composed of a sun gear, a planet carrier supporting planet gears, and a ring gear, and comprising a control element. A locking element and a gripping element are provided parallel to the force transmission chain of the drive stem, which elements are rotationally fixed to the housing and can be moved axially by adjusting the control element between the operating modes of the power drill so as to vary the torque acting on the drive stem.05-30-2013
20130180745MECHANICAL ASSEMBLY FOR A POWER TOOL - A mechanical assembly for a power tool, and a power tool incorporating the mechanical assembly are provided. The mechanical assembly includes (i) a first member having a first axis and a first engagement portion inclined relative to the first axis, (ii) a second member having a second axis and a second engagement portion inclined relative to the second axis, wherein the first and second engagement portions engage each other by movement of the first and second members relative to each other in the direction of at least one of the axes; and wherein the first member is a ring gear and the second member is a central gear and the first and second engagement portions engage and disengage each other by movement of the second member within a space defined within the first member.07-18-2013
20120279738POWER TOOL - A power tool having a drive component and a housing. In one form, the drive component can be a transmission having a planetary stage with planet gears rotatably mounted on pins of a planet carrier. The pins are spaced circumferentially around the planet carrier such that each pair of adjacent pins is spaced apart by a spacing angle. At least two different spacing angles are employed. In another form, the drive component is selected from at least one of a motor, a transmission and a clutch and the housing is configured with first and second housing components and at least one set of mating conically-shaped features that can cooperate to align the housing components to an axis.11-08-2012
20110315415WORK MACHINE - A work machine equipped with an automatic hammering function is capable of preventing breakage of the hammer caused by blank firing. Hydraulic oil fed to a hydraulic breaker at the distal end of a work machine is controlled by first and second spools. Operating an operation lever so as to contract single rod type boom cylinders to press the hydraulic breaker against an object to be crushed. Head-side pressure and rod-side pressure of the boom cylinders are respectively detected by pressure sensors. Any one of switches is used to switch the mode of automatic hammering operation between an automatic hammering inhibiting mode and an automatic hammering authorizing mode. In the automatic hammering authorizing mode, a controller controls the first and second spools of the hydraulic breaker so as to open them only when head-side pressure and rod-side pressure of the boom cylinders are in a given range of pressing force.12-29-2011
20120018181Output Mode Switching Device For Power Tool - An output mode switching device includes an output unit, a stationary ratchet gear unit, a spring, at least one block, a case for accommodating the parts mentioned above, and a control device threadedly connected to the case. The output unit includes an output shaft and a first bearing and a movable ratchet gear connected thereto. Movable ratchet teeth of the movable ratchet gear face stationary ratchet teeth of the stationary ratchet gear. The stationary ratchet gear has circumferential ribs and the block has an inner protrusion and an outer protrusion. Two ends of the spring respectively contact with the first bearing and the inner protrusion of the block. The control device is operated to allow the inner protrusion to be engaged with or separated from the rib of the stationary ratchet gear. Therefore the output shaft outputs torque without axial vibration or with axial vibration.01-26-2012
20130192860ELECTROMAGNETIC MODE CHANGE MECHANISM FOR POWER TOOL - A mode change mechanism for a power tool includes an actuator with a permanent magnet. The actuator is moveable between a first position for a first mode of operation, and a second position for a second mode of operation. A first positioning member is adjacent the first position composed of a ferromagnetic material to attract the permanent magnet. A second positioning member is adjacent the second position and composed of a ferromagnetic material to attract the permanent magnet. An electromagnet may be energized to move the actuator between the first position and the second position. When the electromagnet is not energized and the actuator is in the first position. the actuator is retained in the first position. When the electromagnet is not energized and the actuator is in the second position, the actuator is retained in the second position. When the electromagnet is energized, the actuator moves between the first and second positions.08-01-2013

Patent applications in class DRIVE ADJUSTABLE TO COMPLETELY CHANGE KIND OF DRIVE

Patent applications in all subclasses DRIVE ADJUSTABLE TO COMPLETELY CHANGE KIND OF DRIVE