Abstract: A chuck has a chuck body at least generally centered on a body axis and a collet in the hole and having an external screwthread. A ring axially nondisplaceable in the body has an internal screwthread engaging the screwthread of the collet and external gear teeth. The body is formed with a radially outwardly open cavity seat in which some of the teeth of the ring are exposed. A gear fitted in the seat meshes with the ring teeth and can rotate about a drive axis not parallel to the body axis to rotate the ring about the body axis. According to the invention a sleeve on the chuck extends axially across and covers the seat to retain the gear therein and is formed with a through going aperture through which a tool can fit to engage and rotate the gear.

Abstract: A clamp arrangement for releasably securing an accessory to an oscillating power tool can include a tool body including a motor that drives an output member. A clamp assembly can include a first clamp member that moves relative to the accessory between a closed position wherein the clamp assembly retains the accessory and an open position wherein the first clamp member of the clamp assembly is offset from the accessory permitting removal of the accessory from the clamp assembly. A lever can have a user engagement portion and a pivot portion including a pivot axle. The lever can be pivotally coupled to the tool body about the pivot axle between a first position, wherein the clamp assembly is in the closed position and a second position wherein movement of the user engagement portion of the lever causes the clamp assembly to be moved to the open position.

Abstract: An attachment is mated to a power screwdriver by use of an adapter that is first fixed onto the screwdriver. The attachment includes an automatic fastener driver that receives a collated strip of fasteners, and drives them into a working surface. The attachment is mated to the adapter; the attachment contains a radial type of mechanical coupling that can be rotated without dismounting the attachment from the power screwdriver. In this manner, the angular orientation between the attachment and the power screwdriver can be changed “on the fly” by the user. This combination allows the user to keep his or her hands at their operating positions throughout this procedure, thereby allowing the user to re-commence using the combination tool quickly after readjusting the operating angle.

Abstract: A bit retaining system for a rotary tool or device such as a router is disclosed. The bit retaining system may include a collet assembly and a control assembly. The collet assembly may include a spindle, a collet adapted to receive the bit, and a collet nut. The collet assembly may further include a collet gear mounted on the collet nut and/or a spindle gear mounted on the spindle. The control assembly selectively engages the collet assembly to drive the collet nut and/or secure the spindle in a fixed position, preventing its rotation. In operation, a hand tool is utilized to engage the control assembly. This configuration enables a user to capture and release the rotary tool bit using one hand.

Abstract: A rotary tool includes a housing, a tool holder, and a wrench assembly. The housing includes an end portion having external threads. The tool holder extends from the end portion and includes a fastening member configured for movement between an unclamped position and a clamped position in which the tool holder can engage a tool. The wrench assembly includes a body portion and a wrench member. The body portion includes (i) a plurality of internal threads configured to meshingly engage the external threads and (ii) an opening through which a portion of the tool holder extends when the internal threads are meshingly engaged to the external threads. The wrench member includes a wrench surface configured to engage the fastening member.

Abstract: A chuck, adapted to secure a power tool bit to a power tool, includes an output operably coupled to a motor to receive torque from the motor. The output at least partially supports therein the power tool bit. The chuck also includes an outer body having a cavity and rotatable relative to the output, and a lever coupled to the outer body and movable between a first position, in which the lever is at least partially retracted into the cavity, and a second position, in which the lever is extended from the cavity.

Abstract: A power tool includes a spindle assembly supported for rotation about an axis. The spindle assembly includes a plurality of engagement members, and at least two of the engagement members are disposed in spaced relationship less than one hundred eighty degrees from each other with respect to the axis of the spindle assembly. The power tool also includes a spindle lock assembly that selectively engages at least one of the plurality of engagement members to lock the spindle assembly against rotation about the axis.

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: A collet system for a rotary tool includes a collet for receiving a bit; a wrench assembly for engaging the collet, the wrench assembly moving along an axis extending axially through the collet between a first position where the wrench assembly is disengaged from the collet and a second position where the wrench assembly is engaged with the collet; and an adjusting collar coupled to the wrench assembly for moving the wrench assembly between the first position and the second position, wherein upon moving the wrench assembly to the second position, the adjusting collar is rotatable for rotating the wrench assembly to tighten and loosen the collet.

Abstract: A power tool having a body, a tool bit holder protruding from the tool body for holding and rotating a tool bit about an axis of rotation, and an operator for operating the bit holder. The operator includes an annular member rotationally engageable with the bit holder for manual turning to tighten and/or release the bit holder, and a mount mounting the annular member to the tool body for movement between a non-operative position, rotationally disengaged from the bit holder, and an operative position, rotationally engaged with the bit holder.

Abstract: A recessed key and bit holder for detachably holding at least one drill part such as a drill bit and a chuck key having a chuck key handle and a chuck head, onto a handle base of a power tool. There is at least one recessed area disposed on an enlarged handle base, and at least one spring clip having an anchor end and a retaining end. The anchor end is mounted inside the handle base and the retaining end is located inside the recessed area. The structure also has a finger relief cutout portion formed in connection with the recessed area. The recessed area has a handle portion and a head portion, where the handle portion is shaped to accommodate the chuck key handle and drill bit, and the head portion is shaped to accommodate the chuck head.

Abstract: A tool driver includes a housing and a rotatable drive shaft extending therefrom. A chuck for holding the tool includes a generally cylindrical body having a nose section and a tail section. Each of a plurality of jaws is slidably positioned in one of a plurality of angularly disposed passageways in the body. Each jaw has a jaw face and threads formed thereon. A nut is in operative communication with the drive shall so that the drive shaft rotationally drives the nut. The nut threads engage the jaw threads so that rotation of the nut moves the jaws axially within the passageways. A sleeve is selectively actuatable to a first axial position and a second axial position. The sleeve defines a first slot that receives a detent mechanism in the first axial position and a second slot that receives the detent mechanism in the second axial position.

Abstract: A chuck assembly for use with a power driver having a forward end, a housing, a gearbox, and a rotating spindle extending therefrom includes a separate interface plate. The interface plate is received by and is rotationally fixed to the forward end and includes a forward face defining a center opening and a forward-facing rotational stop. The spindle extends through the center opening to receive a chuck. The chuck includes a body having a nose and a tail, the tail being configured to rotate with the spindle, and the nose including an axial bore. Chuck jaws are received by the body and movable toward and away from the chuck axis. A bracket is disposed about the body and extends rearward of the tail. The bracket defines a rearward surface engaging the stop to rotationally fix the bracket to the interface plate.

Abstract: A tool driver includes a housing and a rotatable drive shaft extending therefrom. A chuck for holding the tool includes a generally cylindrical body having a nose section and a tail section. Each of a plurality of jaws is slidably positioned in one of a plurality of angularly disposed passageways in the body. Each jaw has a jaw face and threads formed thereon. A nut is in operative communication with the drive shaft so that the drive shaft rotationally drives the nut. The nut threads engage the jaw threads so that rotation of the nut moves the jaws axially within the passageways. A sleeve is selectively actuatable to a first axial position and a second axial position. The sleeve defines a first slot that receives a detent mechanism in the first axial position and a second slot that receives the detent mechanism in the second axial position.

Abstract: A bit attaching arrangement for a power tool has a collet nut threadably engaging a rotatably driven shaft of the power tool. The collet nut has a plurality of slots positioned on an outer peripheral surface. A first gear is disposed on the shaft so that rotation of the first gear causes rotation of the shaft. An actuating member having a second gear associated therewith is attached to the housing of the power tool. The actuating member also has a slot-engaging extension associated therewith. The actuating member is positionable between a first position and a second position. In the first position, the second gear engages the first gear and the extension engages one of the slots of the collet nut such that rotation of the actuating member results in rotation of the shaft while maintaining the collet nut at a generally fixed rotational location.

Abstract: A tool driver includes a housing and a rotatable drive shaft extending therefrom. A chuck for holding the tool includes a generally cylindrical body member having a nose section and a tail section. Each of a plurality of jaws is slidably positioned in one of a plurality of angularly disposed passageways in the body. Each jaw has a jaw face and threads formed thereon. A nut is in operative communication with the drive shaft so that the drive shaft rotationally drives the nut. The nut engages the jaw threads so that rotation of the nut moves the jaws axially within the passageways. A locking mechanism is mounted to at least one of the housing and the body and is selectively actuatable to a first operative position and a second operative position. In the first position, the locking mechanism rotationally locks the housing and the body with respect to each other. In the second, it permits relative rotation between the body and the housing.

Abstract: A driver includes a housing, a driveshaft rotatable with respect to the housing and a chuck. The chuck includes a generally cylindrical body and a nut rotatably mounted relative to the body so that relative rotation between the nut and the body moves the chuck toward an open or closed position. A first sleeve is rotationally fixed to the nut and is axially movable and rotatable with respect to the body. A collar is disposed operatively between the first sleeve and the body. The collar is rotationally fixed to and axially movable with respect to the body and is axially fixed to and rotatable with respect to the first sleeve so that the collar moves axially with the first sleeve and with respect to the body between a first axial position and a second axial position. The collar is rotatable with respect to the housing in the first position and is rotationally fixed to the housing in the second position.

Abstract: The present invention relates to an electrically driven chuck for holding a chuck of a machine tool, wherein an electrically driven chuck which has no need of any driving means to be exclusively used for a holding chuck, very simplified, and freely adjustable.Chuck fixing means 40 is locking means for locking a chuck body on a headstock 1. Position-deciding pin driving means 42 includes position-deciding part 43 which has piston 44. The insertion of position-deciding part 43 is inserted into position-deciding hole 41 when pressured air is supplied within cylinder 46. When built-in motor 4 is rotatively driven, both main spindle 2 and scroll 17 are rotatively driven, and jaws 30 move to hold or un-hold a work in the radial direction.

Abstract: A chuck assembly (22) for releasably attaching a cutting accessory (23) to a rotary driven tool such as a surgical drill (20). The chuck assembly includes a chuck head (30) from which a drive spindle (36) extends rearwardly. Clamping jaws (34) extend from the front end of the chuck head to hold the cutting accessory in place. The chuck head, the drive spindle and the clamping jaws can rotate in unison about a common axis of rotation. Alternatively, the chuck head and the drive spindle can be rotated relative to each other around this common axis to lock and unlock the jaws. A spindle lock housing (41) is located between the chuck head and the drill to which the chuck head is attached. The drive spindle (36) extends through the spindle lock housing (41). A moveable switch (88) is mounted to the spindle lock housing (41). The switch can be positioned to engage the drive spindle to prevent rotation of the spindle.

Abstract: A handheld rotary power unit includes a housing with a handle and a distal end portion, a motor shaft extending through the distal end portion of the housing, and a quick-release chuck assembly connected to the motor shaft. An actuator assembly is provided on the housing that enables a user to operate the quick-release chuck assembly with a hand of the user while that hand of the user is holding the handle portion of the housing. Actuator assembly examples include an electrically powered solenoid, a manually powered linkage, and a pneumatically powered piston.

Abstract: A keyless chuck having an outer chuck with spaced grooves, an inner chuck and chuck jaws, where the keyless chuck is mounted on an output shaft of a drill motor. A sleeve locking device mounted between the outer chuck and the drill motor housing, where the sleeve locking device has spaced inner teeth to engage the spaced grooves of the outer chuck to lock the outer chuck stationary, allowing the inner chuck to rotate and opening or closing the chuck jaws to install and remove drill bits.

Abstract: A bit attaching arrangement for a power tool includes a bit locking member rotatable with respect to the output shaft of the power tool. A first gear is fixed to the bit locking member so that rotation of the first gear causes rotation of the locking member. A second gear is fixed to the output shaft so that rotation of the second gear causes rotation of the output shaft. A third gear engages both said first and second gear simultaneously and is capable of rotation by an operator of the power tool. Rotation of the third gear results in counter rotation between the bit locking member and the output shaft so as to result in securement of the bit to the shaft. A further aspect of the invention includes a pinion shaft onto which the third gear is mounted.

Abstract: An auto-locking bit holding system includes a plurality of clamping rods secured by a nut to hold a bit in a transmission block being connected to a transmission shaft of an electric hand tool, a shell covered around the transmission block and the nut, and a locating barrel fastened to the shell to stop the nut inside the shell, wherein: the nut has two projecting blocks at one end; the locating barrel has a body and a plurality of longitudinal locating ribs equiangularly spaced around the periphery of the body; an annular impact member is mounted around the cylindrical transmission block between the nut and the locating barrel, the annular impact member having two projecting blocks bilaterally disposed at one end, and a plurality of equiangularly spaced and longitudinally extended locating grooves on the inside respectively forced into engagement with the locating ribs of the body of the locating member, the projecting blocks of the annular impact member being turned with the annular impact member to strike

Abstract: A router including an arrangement for locking the shaft against rotation and preventing power from being supplied to the motor when the shaft is locked. The shaft is locked by movement of a lock bar which traps a flatted portion of the shaft in an appropriately dimensioned slot. A secondary switch in the power path to the motor is controlled by movement of the lock bar. In addition, an indicator lamp connected to the secondary switch is lit when the shaft is locked and the router is still connected to a source of power.