Abstract: A circular saw includes a housing, an electrical motor mounted in the housing, a base plate disposed below the housing, a saw blade attached to the housing and driven by the electrical motor, and an alignment indication assembly coupled to the housing. The saw blade has a portion below the base plate and can be tilted with respect to the base plate in a transverse direction. The alignment indication assembly has an indication member with an indicating end. The indication member is movable relative to a rotation center of the saw blade when the saw blade is being tilted with respect to the base plate so that the indicating end is maintained in front of and in line with the saw blade all the time.

Abstract: The present invention relates to a clamping device comprising an elongate support structure carrying a fixed jaw and a movable jaw and an advancing clamping mechanism mounted on the support structure for advancing the movable jaw toward the fixed jaw in a longitudinal direction. The clamping device further comprises a transportation mechanism for convenient transportation.

Abstract: The present invention relates to a power tool, including a housing, a motor, and a speed adjusting system decelerating the rotate rotation speed of said motor. The speed adjusting system comprises a includes an output, a main shaft connecting to the output, and a working shaft employed for adapting with corresponding working head during working. The main shaft is connected with a hammer that can move axially against the main shaft. The working shaft is connected with an anvil that rotates together with the working shaft. The hammer has first teeth, the anvil has second teeth, and the hammer drives the anvil on rotate direction through the cooperation between the first teeth of the hammer and the second teeth of anvil. The power tool also includes a clutch, which can move between the first position and the second position to optionally rigidly connect the hammer with at least one of the output and the main shaft.

Abstract: The present invention relates to a lawn mower, comprising: a housing; a motor having a motor shaft connected to the housing; a blade having at least one cutting edge connected with the motor shaft for mowing; a power unit for supplying energy to the motor when the lawn mower works so as to drive the blade to rotate at a cutting speed; and a speed control device being selectively operated in a constant-speed control mode, when the speed control device is operated in the constant-speed control mode, the speed-control device keeping the cutting speed of the blade at a predetermined constant-speed value.

Abstract: This invention disclosed a power tool comprising housing, motor in the housing, switch fixed on the housing used to connect motor and power, output shaft connecting with operator and rotating in single direction in company with the motor driving, and locking device contained in the housing. Power tool has self-locking mechanism which can lock the output shaft no need additional tools or holding force. The locking act can be easier and safer.

Abstract: The present invention provides a cutting machine, comprising: a worktable including an opening and an upper surface for supporting a workpiece; a supporting unit for supporting the worktable; a cutting mechanism mounted on a lower surface of the worktable and received in the supporting unit comprising: a motor for outputting a rotation motion; a reciprocating rod driving a saw blade moving reciprocately through the opening; a motion conversion mechanism converting the rotation motion of the motor into a reciprocating motion of the reciprocating rod; and a saw blade clamp for clamping and releasing the saw blade.

Abstract: The present invention discloses a vegetation pruning device comprising a main body; a cutting element; a guide bar for supporting the cutting element; a motor for driving the cutting element; a first handle assembly; a second handle assembly; a locking mechanism for detachably securing the second handle assembly to the first handle assembly; a connecting mechanism being positioned between the first handle assembly and the guide bar; the first handle assembly or the second handle assembly being operable to move linearly toward to or away from the guide bar, the connecting mechanism is provided to change the linearly movement of the first or the second handle assembly to the pivoting of the guide bar. Both of the first handle assembly and the second handle assembly are moving linearly, which makes the operator feel comfortable in any working instance.

Abstract: 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 housing, an active impact block, which can rotate with and make axial motion with respect to the main shaft, is configured on the main shaft, a passive impact block which rotates with the working shaft and can alternatively make axial motion with respect to the working shaft is mounted on the working shaft, the active impact block rotates to drive the passive impact block through the coordination of the first end tooth set on the active impact block and the second end tooth set on the passive impact block; the power tool further includes a function shifting button which can move between the first location and the second location to alternatively limit the passive impact block's axial motion with respect to the working shaft, in this way to realize the shifting between the first function and the second function of t

Abstract: A vegetation pruning device includes a cutting element; a guide bar for supporting the cutting element, the guide bar having a guide bar plane, the guide bar being pivotable in the guide bar plane about a fixed axis; a motor having a motor shaft for rotatably driving the cutting element; a motor housing for receiving the motor; a guiding mechanism connected to the motor housing, the guiding mechanism having a longitudinal axis; a handle assembly operable to move linearly along the longitudinal axis; and a transmission device for connecting the handle assembly to the guide bar through, the transmission device converting a linearly movement of the handle assembly to a pivoting movement of the guide bar, the cutting element thereby approaching or withdrawing from a workpiece to be sawn.

Abstract: A shearing tool configured to be detachably connected to a portable oscillatory power tool is disclosed. The power tool includes a head housing and an output shaft with an axis. The output shaft extends outwardly from the head housing and is able to pivot back and forth about the axis. The shearing tool includes a fixed blade mounted relative to the head housing and a movable blade connected to the output shaft. The movable blade can pivot back and forth about the axis relative to the fixed blade. The fixed blade and the movable blade are connected to the portable power tool by a same fastening element. The shearing tool has simple operational steps and simple structure, thus to facilitate assembling.

Abstract: A chain saw includes a housing, a sprocket wheel which is provided in the housing for driving a saw chain, and a chain guide for guiding the movement of the saw chain. The chain guide extends out longitudinally from the housing and is movable longitudinally relative to the housing. The chain saw includes a chain tensioning device. The chain tensioning device comprises a driven member arranged on the chain guide and a driving member which drives the driven member to move the chain guide longitudinally and a rotating device rotating the driving member. A stepless clutch device is arranged between the rotating device and the driving member. The chain tensioning device presses the chain guide while it tensioning the saw chain. Thus it prevents effectively the chain guide from loosing after the saw chain is tensioned. The operation of the chain tensioning device is labour-saving. The chain tensioning device has a stable structure and it is hard to be worn.

Abstract: The present invention relates to a miter saw, including a base, a work table, a saw unit pivotally mounted on the base, and fence assembly connected to the base. The fence assembly is directly removably mounted on the base so as not to cause space between the two fences, thus promoting cutting precision and making simple structures at a lower cost. The fences having different heights are interchangeably used, which increases inclined cutting angles.

Abstract: The present invention relates to a table saw, including: a work table, including a working surface for placing a workpiece; a fence, slidably arranged on said work table for support said work piece; a first motor, arranged below said working surface of the work table; a blade, driven by said first motor for cutting motion, and at least part of the blade is protruding out of the working surface of the work table in the cutting process, characterized in that: A planer detachably arranged on said work surface, said planer including a housing, a second motor located in said housing and a blade shaft driven by said second motor to rotate about its longitudinal axis.

Abstract: A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The power tool comprises a signal generator and a control system electrically coupled to the signal generator and operatively engaged with the gear transmission mechanism such that when the signal generator is manually activated, an electric signal is generated and transmitted to the control system to cause the gear transmission mechanism to vary the gear reduction ratio.

Abstract: A reciprocating cutting tool including a motor housing, a gear box connected with the motor housing, a motor disposed in the motor housing and a reciprocating mechanism disposed in the gear box. The reciprocating mechanism includes a suspending rack and a reciprocating shaft driven by the motor. The reciprocating shaft is connected to the motor by a reduction gear and an eccentric shaft. The suspending rack comprises a top plate and a bottom plate, the reciprocating shaft movably connected to the bottom plate, and would not reciprocate beyond the top plate in a reciprocating direction. Due to the reciprocating shaft not being guided and restricted by the top plate of the suspending rack, the reciprocating shaft would not extend beyond the top plate during the reciprocating motion, The present invention decreases the height of the gear box greatly relative to prior tools, and thus the height of the reciprocating cutting tool is likewise decreased, thereby increasing its application ability.

Abstract: The present invention has disclosed a variable speed tool and a variable speed control method. The tool includes a switch; a gearbox housing; a motor; an outputting shaft; a multistage transmitting gear train and a gearshift ring which are mated with the motor and the outputting shaft, the gearshift ring having inner teeth; a gearshift fork mated with the gearshift ring; a tension spring arranged between the gearbox housing and the gearshift fork; and a torque sensing ring provided with a sliding groove in which the gearshift fork is movably disposed. When the load of the outputting shaft has reached to a predetermined value, the torque sensing ring makes the gearshift fork move axially in the sliding groove under the action of the tension spring, thus bringing the gearshift ring to move axially. The variable speed tool of the present invention may automatically adjust the rotating speed and the torque of the outputting shaft according to a variation of the load torque.

Abstract: A power tool includes a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The power tool includes a signal generator and a control system electrically coupled to the signal generator and operatively engaged with the gear transmission mechanism such that when the signal generator is manually activated, an electric signal is generated and transmitted to the control system to cause the gear transmission mechanism to vary the gear reduction ratio.

Abstract: A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The gear transmission mechanism has a high speed position and a low speed position. The control system is coupled to the gear transmission mechanism for detecting an operating characteristic of the power tool to actuate a ring gear to automatically move from the high speed position to the low speed position and to reduce the rotational speed of the ring gear when the operating characteristic exceeding a predetermined value.

Abstract: The present invention provides an apparatus that comprises multiple cases capable of storing power tool accessories and a carousel. The carousel may comprise support plates with grooves on it and retaining covers. The accessory cases are pivotal with respect to the support plates. Each accessory case can be dismounted when the accessory case pivots to align with the grooves. In accordance with the invention, the use of accessory cases become very convenient. An accessory case can be straightforwardly dismounted from the apparatus and be carried by the user without the need for the whole apparatus to be carried.

Abstract: The device (12) comprises a laser (14) which is attached to the tool (2). During operation a laser beam (16) is emitted onto an optical lens (20) which is of cylindrical shape. The lens (20) is suspended to swivel freely, e. g. by means of a swivel arm (24) which is operatively connected to the tool (2). Thus, the main axis (28) of the lens (20) is kept vertically by the gravity force when the tool (2) is moved or tilted. The shape of the laser marker (I1 II, III) generated on a workpiece (8) is an indication for the user of the tool (2) concerning an inclination (x, y) of the tool (2).