Abstract: A chuck including a body having a tail section and a nose section defining an axial bore. A plurality of jaws are movably disposed with respect to the axial bore and a nut is in threaded engagement with the jaws. A sleeve engages the nut so that rotation of the sleeve moves the jaws. A first ring defines a plurality of teeth and a second ring is rotatable relative to the nut over a limited arc and defines at least one pawl. In a first state, the second ring is non-rotatable relative to the first ring in both the opening and closing directions, and in a second state the first and second rings are rotatable about the body, and the second ring is rotatable relative to the first ring in the closing direction.

Abstract: A drill chuck has a chuck body centered on and rotatable about an axis and formed with angled guides and respective jaws slidable in the guides axially forward and radially toward each other and axially rearward and radially away from each other. An annular tightening element is limitedly axially shiftable on the sleeve between a front position and a rear position. Screwthreads engaged between the element and the jaws axially displace the jaws forward on rotation of the element in a tightening direction and axially displace the jaws rearward on rotation of the element in an opposite loosening direction. Respective annular arrays of teeth angularly fixed on the element and the body are interengaged and prevent relative rotation of the element and body in the rear position of the element and are spaced and permit relative rotation of the element and body in the front position of the element.

Abstract: A chuck assembly configured to provide a shorter longitudinal profile. The chuck assembly includes a chuck body with a support bearing mounted to a rear portion of the chuck body and mounted to a portion of a housing such that a cavity is defined axially rearward of the support bearing and is configured to receive the jaws when the rear portion of the jaws extend axially rearward.

Abstract: A chuck including a body with a nose section defining an axial bore formed therein, a plurality of jaws movably disposed with respect to the body, and a sleeve rotatably mounted about the body so that rotation of the sleeve moves the jaws relative to the axial bore. A bearing has a first race, a second race, and at least one bearing element disposed therebetween, one of the first race and the second race defining a ratchet and the other defining a pawl biased toward the ratchet. A biasing element is disposed between the pawl and the sleeve. The biasing element exerts a biasing force on the pawl toward the ratchet and the ratchet and the pawl prevent the second race from rotating in the opening direction with respect to the first race when engaged.

Abstract: A chuck including a body having a tail section defining an annular shoulder and a nose section having an axial bore and angularly disposed passageways intersecting the axial bore. An O-ring is disposed in the annular shoulder and a plurality of jaws is slidably positioned in the passageways. A nut is rotatably mounted on the body in engagement with threads on the jaws. A first sleeve and a second sleeve each define a gripping surface thereon and one of the first and second sleeves is axially reciprocal on the body. The one of the first and second sleeves defines an annular groove on an inner surface thereof having a first shoulder and a second shoulder. The O-ring is received in the groove such that axial motion of the one of the first and the second sleeve is limited by abutment of the O-ring with said first and second shoulders.

Abstract: A tool chuck may include a chuck body defining a longitudinal axis. A sleeve may be mounted on the chuck body for movement between a first axial position and a second axial position. A clutch part provided on the sleeve. The clutch part may engage with a cooperating clutch part when the sleeve is in the second axial position. The clutch part may have a working surface that faces in a direction perpendicular to the longitudinal axis.

Abstract: A chuck for use with a driver having a rotatable drive shaft, the chuck including a body having a nose section and a tail section, the tail section being configured to rotate with the drive shaft and the nose section having an axial bore. A plurality of jaws is movably disposed with respect to the body and in communication with the axial bore. A first sleeve is rotatably mounted to the body in operative communication with the jaws so that rotation of the sleeve moves the jaws either toward a longitudinal center axis of the axial bore or away from the longitudinal center axis. A second sleeve is rotatably mounted to the body and is movable between a first position in which the second sleeve is rotatably fixed to the body and a second position in which the second sleeve is rotatable about the body. The second sleeve moves in a direction transverse to the longitudinal center axis of the axial bore when moving between the first position and the second position.

Abstract: A chuck with a generally cylindrical body having a tail section configured to receive a drive shaft of a driver and a nose section having an axial bore formed therein. A plurality of jaws is movably disposed with respect to the body. A nut is rotatably mounted about the body and operatively engages the jaws. A sleeve is non-rotatably coupled to the nut. A shield cap is rotatably secured about the nose section of the body. The chuck also includes a first ring and a second ring that rotates relative to the nut over a limited arc. One of the first ring and the second ring defines a ratchet and the other defines at least one deflectable tab that is biased toward and engages the ratchet.

Abstract: A chuck including a cylindrical body with a nose section and a tail section, the nose section having an axial bore formed therein. A sleeve is rotatably mounted about the body. Rotation of the sleeve in a closing direction moves the jaws toward a longitudinal axis of the axial bore and rotation of the sleeve in an opening direction moves the jaws away from the longitudinal axis. An O-ring is disposed adjacent the sleeve in a plane that is transverse to the longitudinal axis. A bearing has a first race adjacent the body, a second race adjacent the sleeve and bearing elements therebetween. One race defines a ratchet and the other of the first race and the second race defines a pawl biased toward the ratchet. The O-ring biases the pawl toward the ratchet and when the pawl engages the ratchet prevents the second race from rotating in the opening direction with respect to the first race.

Abstract: A chuck for use with a manual or powered driver having a housing and a rotatable drive shaft extending therefrom is provided. The chuck 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 formed on one side thereof and threads formed on the opposite side thereof. A nut is rotatably mounted on the body in engagement with the jaw threads so that rotation of the nut moves the jaws axially within the passageways. A locking member, in a first axial position, is rotatable with respect to the driver housing. In a second axial position, it operatively engages the housing and the nut so that the locking member is rotationally held to the housing and the nut so that the nut is rotationally held to the housing. The locking member is axially reciprocal between the first axial position and the second axial position.

Abstract: The present invention discloses a one-way clutch capable of eliminating the phenomenon of “teeth scraping”, comprising: ratchet member, pawl seat, pawl member, control outer sleeve and control member provided with control portion, wherein at least one of the control portion or the pawl member has a first slope capable of being in contact with the other one of the control portion or the pawl member and said pawl member exerts a force towards the second direction on the control portion.

Abstract: A drill chuck locked through an inclined wedge surface, comprising a drill body, plural jaws, a nut, an outer sleeve, a control sleeve, a poking claw and a wedge block type lock ring. The wedge block type lock ring is rotatably fitted around the drill body to drive the nut to rotate, with a wedge lock and an elastic member biasing the wedge block pivotally connected therein, wherein the wedge block has an inclined wedge surface to be locked frictionally with the locking surface of the drill body; the control sleeve is connected with the outer sleeve to drive the wedge block type lock ring to rotate; the poking claw rotates simultaneously with the control sleeve between a first position where the poking claw is out of contact with the wedge block and a second position where the poking claw contacts the wedge block.

Abstract: A chuck includes a generally cylindrical body constructed of aluminum and a plurality of jaws moveably disposed with respect to the body in communication with the body's axial bore. A generally cylindrical sleeve is rotatably mounted about the body in operative communication with the jaws so rotation of the sleeve in a closing direction moves the jaws towards the axis of the axial bore and rotation of the sleeve in an opening direction moves the jaws away from the axis. A bearing has a first race adjacent the body, a second race adjacent the sleeve and at least one bearing element disposed between the first race and the second race. One of the first race and the second race defines a ratchet. The other of the first race and the second race defines a pawl biased toward the ratchet. The ratchet and the pawl are configured so that when the pawl engages the ratchet, the ratchet and pawl prevent the second race from rotating in the opening direction with respect to the first race.

Abstract: The present invention discloses a chuck mounted on a transmission shaft driven by a power source, and the chuck comprises a chuck body, plural jaws, a rear cap, an outer sleeve rotatablely fitted around the chuck body and located in front of the rear cap, and a transmission nut, characterized in that the chuck further comprises a drive pendulum support sleeve which is located between the outer sleeve and the transmission nut, connected with the outer sleeve and fitted around the chuck body; and a drive pendulum which is mounted on the drive pendulum support sleeve, swings between a first and second positions about its pivot axis, and has first and second drive portions, wherein the drive pendulum drives the transmission nut along a first transmission path through the first drive portion when it is in the first position, and drives the transmission nut along a second transmission path of more gripping force than the first transmission path through the second drive portion when it is in the second position.

Abstract: A drill has a housing, a drivable drill spindle rotatably mounted in the housing, a chuck body coaxially connected and rotationally fixed to the drill spindle, a tightening sleeve rotatable on and relative to the chuck body, and jaws moveable relative to the chuck body by the tightening sleeve. A coupling between the housing and the tightening sleeve has a sleeve held on the housing so as not to rotate with the chuck body and movable relative to the chuck body chuck between a coupling position in which it connects the tightening sleeve to the spindle housing angularly in a friction-fit manner and a decoupling position into which it is urged by a decoupling spring when torque between the tightening sleeve and the coupling sleeve in the coupling position exceeds a predetermined value.

Abstract: A drill chuck including a spindle portion with a pusher bore, a spindle bore, an annular array of teeth, and an annular groove defined by the outer surface of the first end. A body is rotatably disposed about the spindle portion and includes a central bore, an annular groove defined by the central bore, and a pawl pivotably mounted to the body for selectively engaging the annular array of teeth. A jaw pusher includes a threaded post and a head, the threaded post being disposed in the pusher bore and configured for axial motion. A jaw guide is disposed on the first end of the body and includes a plurality of jaw slots. A plurality of jaws is slidably received in the corresponding jaw slots and slidably received by the head of the jaw pusher. A plurality of bearing balls is received between the annular groove of the spindle portion and the annular groove of the body.

Abstract: A chuck includes a generally cylindrical body and a plurality of jaws moveably disposed with respect to the body in communication with the body's axial bore. A generally cylindrical sleeve is rotatably mounted about the body in operative communication with the jaws so rotation of the sleeve in a closing direction moves the jaws towards the axis of the axial bore and rotation of the sleeve in an opening direction moves the jaws away from the axis. A bearing has a first race adjacent the body, a second race adjacent the sleeve and at least one bearing element disposed between the first race and the second race. One of the first race and the second race defines a ratchet. The other of the first race and the second race defines a pawl biased toward the ratchet. The ratchet and the pawl are configured so that when the pawl engages the ratchet, the ratchet and pawl prevent the second race from rotating in the opening direction with respect to the first race.

Abstract: A chuck for use with a driver having a rotatable drive shaft, the chuck including a body having a nose section and a tail section, the tail section being configured to rotate with the drive shaft and the nose section having an axial bore. A plurality of jaws is movably disposed with respect to the body and in communication with the axial bore. A first sleeve is rotatably mounted to the body in operative communication with the jaws so that rotation of the sleeve moves the jaws either toward a longitudinal center axis of the axial bore or away from the longitudinal center axis. A second sleeve is rotatably mounted to the body and is movable between a first position in which the second sleeve is rotatably fixed to the body and a second position in which the second sleeve is rotatable about the body. The second sleeve moves in a direction transverse to the longitudinal center axis of the axial bore when moving between the first position and the second position.

Abstract: A power tool with a tool portion and at least one attachment. The tool portion has a tool body and a drill chuck. The drill chuck includes a rotatable spindle, a plurality of jaws that are coupled to the rotatable spindle and a cover that is disposed about the jaws and which is not coupled for rotation with the rotatable spindle. The attachment is coupled the cover of the drill chuck.

Abstract: A chuck with a generally cylindrical body having a tail section configured to receive a drive shaft of a driver and a nose section having an axial bore formed therein. A plurality of jaws is movably disposed with respect to the body. A nut is rotatably mounted about the body and operatively engages the jaws. A sleeve is non-rotatably coupled to the nut. A shield cap is rotatably secured about the nose section of the body. The chuck also includes a first ring and a second ring that rotates relative to the nut over a limited arc. One of the first ring and the second ring defines a ratchet and the other defines at least one deflectable tab that is biased toward and engages the ratchet.

Abstract: A chuck including a cylindrical body with a nose section and a tail section, the nose section having an axial bore formed therein. A sleeve is rotatably mounted about the body. Rotation of the sleeve in a closing direction moves the jaws toward a longitudinal axis of the axial bore and rotation of the sleeve in an opening direction moves the jaws away from the longitudinal axis. An O-ring is disposed adjacent the sleeve in a plane that is transverse to the longitudinal axis. A bearing has a first race adjacent the body, a second race adjacent the sleeve and bearing elements therebetween. One race defines a ratchet and the other of the first race and the second race defines a pawl biased toward the ratchet. The O-ring biases the pawl toward the ratchet and when the pawl engages the ratchet prevents the second race from rotating in the opening direction with respect to the first race.

Abstract: A chuck for use with a manual or powered driver having a housing and a rotatable drive shaft extending therefrom is provided. The chuck 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 formed on one side thereof and threads formed on the opposite side thereof. A nut is rotatably mounted on the body in engagement with the jaw threads so that rotation of the nut moves the jaws axially within the passageways. A locking member, in a first axial position, is rotatable with respect to the driver housing. In a second axial position, it operatively engages the housing and the nut so that the locking member is rotationally held to the housing and the nut so that the nut is rotationally held to the housing. The locking member is axially reciprocal between the first axial position and the second axial position.

Abstract: The present invention discloses a self-locking mechanism for use in a drill chuck, comprising: clutch tooth sleeves, fixedly connected with the chuck body of the drill chuck and forming teeth; an oval deformation ring, having a substantially circular first shape and a substantially oval second shape, wherein the oval deformation ring has teeth on the side wall, with the teeth engaging with the teeth of the clutch tooth sleeve when the oval deformation ring is in the second shape; and a control sleeve, for controlling the conversion of the oval deformation sleeve between the first shape and the second shape. The present invention also discloses a force increasing self-locking drill chuck with said self-locking mechanism. The self-locking mechanism according to the present invention can be used in drill chucks of multiple structures, and provides a brand-new thought for the designs of the self-locking mechanisms of drill chucks.

Abstract: A keyless chuck having both an automatic locking feature and a manual locking feature. The automatic locking feature provides for automatic locking of the chuck in a tightened state when a predetermined tightening torque has been exceeded. The chuck can be utilized with only the automatic locking feature engaged. If desired, a manual locking feature can also be engaged wherein rotation of the outer sleeve relative to the body is prevented. A retaining feature can be employed to inhibit the movement of the manual locking feature between a locked and unlocked position. The retaining feature thereby avoids accidental engaging or disengaging of the manual locking feature.

Abstract: A tool chuck may include a chuck body defining a longitudinal axis. A sleeve may be mounted on the chuck body for movement between a first axial position and a second axial position. A clutch part provided on the sleeve. The clutch part may engage with a cooperating clutch part when the sleeve is in the second axial position. The clutch part may have a working surface that faces in a direction perpendicular to the longitudinal axis.

Abstract: A chuck with a generally cylindrical body having a tail section configured to receive a drive shaft of a driver and a nose section having an axial bore formed therein. A plurality of jaws is movably disposed with respect to the body. A nut is rotatably mounted about the body and operatively engages the jaws. A sleeve is non-rotatably coupled to the nut. A shield cap is rotatably secured about the nose section of the body. The chuck also includes a first ring and a second ring that rotates relative to the nut over a limited arc. One of the first ring and the second ring defines a ratchet and the other defines at least one deflectable tab that is biased toward and engages the ratchet.

Abstract: The invention relates to a drill chuck having a chuck body (1) which can be connected to a drill spindle and in which clamping jaws (3) are arranged which engage in the thread of a rotatably embodied ring nut (6). The invention also relates to a blocking device for the ring nut (6) consisting of a coaxial crown of blocking recesses (9) and at least one blocking element (10) which, in the blocking position, is engaged in the blocking recesses (9) under the force of a locking spring. The drill chuck also comprises a coaxial adjusting ring (15) which can be rotated in a defined manner relative to the ring nut (6) between first abutments (16), and a catch device (17) forming two catch positions (18) for the adjusting ring (15) in the peripheral direction.

Abstract: An internally geared chuck that can generate sufficient torque to ensure adequate jaw gripping or jaw releasing force regardless of whether it is used in a keyless or key enabled chuck version. The key enabled version encompasses an internally housed, spring retracted chuck key that may be enabled to add additional torque to tighten or loosen the jaws when so required. The key enabled version may be operated with simple hand tightening in a keyless mode. The second embodiment has two levels of keyless operation. By drawing together elements of the chuck, a mechanical gearing advantage may be realized to add additional torque. In both embodiments all of the various sized and configured gears are housed within the chuck body.

Abstract: A chuck for a driver having a rotatable drive shaft, the chuck having a cylindrical body member having a nose section and a tail section. A plurality of jaws is slidably positioned in the body, and each jaw has a jaw face and threads. A nut is rotatably mounted on the body in engagement with the jaw threads. A nut retainer member includes a first portion fixed to the body and a second portion engaging the nut. The chuck includes a plurality of recesses and a deflectable pawl biased toward and engaging the plurality of recesses. In a first state, one of the deflectable pawl and the plurality of recesses travels with the body and the other with the nut, and in a second state they travel together.

Abstract: A chuck including a cylindrical body with a nose section and a tail section, the nose section having an axial bore formed therein. A sleeve is rotatably mounted about the body. Rotation of the sleeve in a closing direction moves the jaws toward a longitudinal axis of the axial bore and rotation of the sleeve in an opening direction moves the jaws away from the longitudinal axis. An O-ring is disposed adjacent the sleeve in a plane that is transverse to the longitudinal axis. A bearing has a first race adjacent the body, a second race adjacent the sleeve and bearing elements therebetween. One race defines a ratchet and the other of the first race and the second race defines a pawl biased toward the ratchet. The O-ring biases the pawl toward the ratchet and when the pawl engages the ratchet prevents the second race from rotating in the opening direction with respect to the first race.

Abstract: A tool chuck may include a chuck body defining a longitudinal axis. A sleeve may be mounted on the chuck body and axially fixed relative to the chuck body. A clutch part may be provided on the sleeve. The clutch part may interact with a cooperating clutch part mounted on the power driver housing. The cooperating clutch part may be mounted on the power driver housing for movement between a first axial position in which the chuck body is rotatable together with the sleeve, and a second axial position in which the chuck body is rotatable relative to the sleeve to actuate the tool chuck. The chuck body may be rotatable in a first direction to actuate the tool chuck up to a first torque threshold, and rotatable in a second direction to actuate the tool chuck up to a second, different torque threshold.

Abstract: A tool chuck may include a chuck body defining a longitudinal axis. A sleeve may be mounted on the chuck body for movement between a first axial position and a second axial position. A clutch part provided on the sleeve. The clutch part may engage with a cooperating clutch part when the sleeve is in the second axial position. The clutch part may have a working surface that faces in a direction perpendicular to the longitudinal axis.

Abstract: A chuck for use with a manual or powered driver having a housing and a rotatable drive shaft extending therefrom is provided. The chuck 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 formed on one side thereof and threads formed on the opposite side thereof. A nut is rotatably mounted on the body in engagement with the jaw threads so that rotation of the nut moves the jaws axially within the passageways. A locking member, in a first axial position, is rotatable with respect to the driver housing. In a second axial position, it operatively engages the housing and the nut so that the locking member is rotationally held to the housing and the nut so that the nut is rotationally held to the housing. The locking member is axially reciprocal between the first axial position and the second axial position.

Abstract: A automated chuck is provided with at least three user selectable operating modes, thereby enabling different functions to be performed during tightening and loosening of the chuck. In one exemplary implementation, the different user selectable operating modes of the chuck may be used to actuate a motor direction switch of the drill.

Abstract: An improved shuck has one end coupling with a fabrication machine through a holding member. The chuck includes a coupling structure, a grip means and a shank. The coupling structure has a first screwing portion at one end and a fastening member at the other end. The grip means has a second screwing portion at one end engageable with the first screwing portion and a plurality of grip jaws at the other end inclined outwards. The coupling structure and the grip means are held in a through hole formed in the shank. The through hole has an internal side to form compact holding of the grip means to firmly hold a tool. After the coupling structure is anchored through the fastening member, the shank can be turned to drive the grip means to move, and the grip jaws can be expanded or contracted to release or grip the tool.

Abstract: A locking drill chuck comprises a chuck body, a plurality of jaws, a nut, a front sleeve, and a rear sleeve, wherein the chuck body has an axial hole at its rear end for engaging with a driving shaft of a driving means, and the rear sleeve close fits with the outer circumference of the rear end of the chuck body, the jaws are separately fitted in a plurality of corresponding inclined holes equally departed away from each other in the chuck body, the nut engages with the jaws, the locking drill chuck further comprises a locking sleeve provided between the front sleeve and the rear sleeve, and connected with the front sleeve; and a locking assembly provided between the nut and a stop surface of the chuck body, the locking assembly includes rolling members and a locking plate, wherein the locking plate connects with the locking sleeve, and has a plurality of eccentric grooves in an end plane thereof, the rolling members is received in the eccentric grooves, the stop surface of the chuck body includes a conical p

Abstract: A power driver may include a housing, a tool chuck and a power take off mechanism. The tool chuck may have an input shaft mounted for rotation on the housing. The input shaft may support threaded chuck jaws. A chuck actuating shaft may be mounted for rotation on the input shaft. The chuck actuating shaft may be screw coupled to the threaded chuck jaws. The power take off mechanism may be connected to the tool chuck. The power take off mechanism may be adjustable into a DRILL DRIVE MODE to rotationally drive the input shaft and the chuck actuating shaft together as a unit, and a CHUCK MODE to rotationally drive the chuck actuating shaft relative to the input shaft. The power take off mechanism may be internal of the housing. The power take off mechanism in the CHUCK MODE may rotationally fix the input shaft to the housing.

Abstract: A chuck has a drive shaft, a generally rotatable housing part adjacent the drive shaft, and a chuck body fixed to and rotatable with the shaft and formed with a plurality of guides holding respective jaws shiftable between closely spaced inner positions and widely spaced outer positions. An adjustment sleeve surrounding the body and coupled to the jaws can rotate relative to the body to shift the jaws between their positions. A latch has interengaging formations on the housing part and on the adjustment sleeve manually shiftable between a coupled position for rotationally locking the adjustment sleeve to the housing part and a decoupled position for rotation of the adjustment sleeve relative to the housing part. A torque coupler connected to the latch decouples the latch from the housing when, in the coupled position, a torque exerted between the housing and the chuck body exceeds a predetermined limit.

Abstract: A chuck is provided for use with a manual or powered driver. The chuck has a body with angularly disposed passageways. A plurality of jaws is slidably positioned within the angularly disposed passageways. A nut is rotatably mounted about the body member and has threads defined on an inner circumference that engage jaw threads. A sleeve is in driving rotational engagement with the nut so that when the sleeve is rotated with respect to the body, the jaws are moved within the passageways. A stopping mechanism that rotates with the sleeve is provided with at least one elastic stop pawl. When the stopping mechanism rotates in a first direction that causes the gripping jaws to move to the rear of the body to a predetermined position, the stop pawl blocks the lateral surface of the gripping jaws and prevents further rotational movement of the nut.

Abstract: A chuck with a generally cylindrical body having a tail section configured to receive a drive shaft of a driver and a nose section having an axial bore formed therein. A plurality of jaws is movably disposed with respect to the body. A threaded spindle is rotatably connected to the body and operatively engages the jaws. A first ring is fixedly mounted about the body and has a first plurality of teeth. An inner sleeve is rotatably mounted about the tail section and has an open portion. A second ring that has at least one protrusion that mates with the corresponding open portion and extends outwardly from the inner sleeve and the ring has a second plurality of teeth. An outer sleeve is placed concentrically around the inner sleeve and contains a lock groove that the protrusion of the second ring is situated inside the lock groove.

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 tool chuck may include a chuck body defining a longitudinal axis. A sleeve may be mounted on the chuck body and axially fixed relative to the chuck body. A clutch part may be provided on the sleeve. The clutch part may interact with a cooperating clutch part mounted on the power driver housing. The cooperating clutch part may be mounted on the power driver housing for movement between a first axial position in which the chuck body is rotatable together with the sleeve, and a second axial position in which the chuck body is rotatable relative to the sleeve to actuate the tool chuck. The chuck body may be rotatable in a first direction to actuate the tool chuck up to a first torque threshold, and rotatable in a second direction to actuate the tool chuck up to a second, different torque threshold.

Abstract: A chuck wrench for use with a drill that has a keyless chuck defining a rotational axis includes a body having an interior surface defining an opening. The opening is configured to receive a portion of the keyless chuck such that the body substantially surrounds the keyless chuck. The interior surface includes a projection configured to mate with an exterior surface of the keyless chuck. The chuck wrench also includes a lever coupled to and extending from the body. The lever is operable to rotate the body about the rotational axis such that the projection engages the exterior surface of the keyless chuck to apply a clamp force to the keyless chuck.

Abstract: A clamping structure for a handled tool including: (1) a chuck body, provided with gear teeth, ratchet and guiding holes, (2) a plurality of grippers, mounted in the guiding holes of the chuck body and having partial thread on one end; (3) an inner gear ring, (4) a control outer sleeve, having a plurality of control keys and a plurality of driving keys thereon, (5) a driving member having inner taper thread and a plurality of pinions thereon, wherein the inner taper thread engages with the threads of the grippers, and wherein the pinions, mounted to the driving member through pin shafts, engage with both the inner gear ring and the gear teeth of the chuck body, (6) a plurality of resilient anti-loose members with pawl.

Abstract: A chuck that automatically tightens or loosens the jaws of the chuck in response to rotation of a power tool drive shaft or gearbox shaft is disclosed. The chuck has a body, a plurality of jaws and an adjustment ring that is threadably engaged with the jaws. The chuck body and the adjustment ring are each selectively rotationally coupled to the gearbox shaft of the power tool. The chuck body is also selectively rotationally coupled to the power tool housing. A mode selector is provided for placing the chuck in either drill mode or auto-lock mode. In drill mode, the chuck body is rotationally coupled to the gearbox shaft and is rotatable relative to the power tool housing, thereby allowing the chuck body to be rotationally driven by the gearbox shaft.

Abstract: The invention concerns a mandrel comprising a body (2) wherein are mounted, guided in translation, several jaws (7) which converge forward to clamp a tool. Each jaw (7) has a rectangular cross-section, and is guided in a groove with complementary profile provided in the body, the orientation of each jaw (7) is such that its side (10) facing inside is located in a plane substantially tangent to a circle (12) centered on the axis of the mandrel, and each jaw (7) is positioned in the body such that the longitudinal median plane (P) of its side (10) facing inside is offset relative to the contact line on a circle (12) centered on the axis of the mandrel and representing the shank of a tool, so as to provide a contact with said circle an edge (13), called active edge, delimiting said inner side (10), and located in front or tangent in the clamping direction.

Abstract: A non-impact keyless chuck suitable for use with manual or powered drivers is disclosed. The chuck comprises a body which carries a rotatable split nut having a relatively fine thread and a plurality of slidable jaws, which may be identical, driven by the rotatable nut. An anti-friction bearing is disposed between the rotatable nut and a bearing thrust ring mounted on the body. A clutch or torque limiting mechanism is provided to limit the tightening torque to a predetermined value while the loosening torque may be limited or unlimited. The front sleeve, and rear sleeve, if used, may be formed from a structural plastic to reduce manufacturing costs. A relatively soft elastomeric grip boot may be placed on the front sleeve to improve the grip and temporarily restrain and center the tool during chuck tightening or loosening operations. A relatively soft elastomeric grip boot may also be placed on the rear sleeve, if used.

Abstract: A automated chuck is provided with at least three user selectable operating modes, thereby enabling different functions to be performed during tightening and loosening of the chuck. In one exemplary implementation, the different user selectable operating modes of the chuck may be used to actuate a motor direction switch of the drill.

Abstract: A chuck with a generally cylindrical body having a tail section configured to receive a drive shaft of a driver and a nose section having an axial bore formed therein. A plurality of jaws is movably disposed with respect to the body. A nut is rotatably mounted about the body and operatively engages the jaws. A sleeve is non-rotatably coupled to the nut. A shield cap is rotatably secured about the nose section of the body. The chuck also includes a first ring and a second ring that rotates relative to the nut over a limited arc. One of the first ring and the second ring defines a ratchet and the other defines at least one deflectable tab that is biased toward and engages the ratchet.

Abstract: A chuck for use with a driver having a drive shaft includes a cylindrical body having a nose section and a tail section. The tail section is configured to receive the drive shaft and the nose section includes an axial bore. A plurality of jaws is movably disposed with respect to the body in communication with the axial bore. A sleeve is rotatably mounted about the body in operative communication with the jaws. A first ring is adjacent the sleeve, a second ring is adjacent the body, and one of the first ring and the second ring defines a ratchet and the other defines a pawl biased away from the ratchet. The ratchet and the first pawl are configured so that when the first pawl engages the ratchet, the ratchet and first pawl prevent the first ring from rotating in an opening direction with respect to the second ring.