Abstract: A drill chuck with an impacting structure that may be selectively employed to drive the jaws of the chuck into further engagement with or out of engagement with a bit. The chuck is configured so as to be capable of generating relatively high torques in a loosening direction so as to ensure that the bit can be removed from the jaws of the chuck.

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 drill is provided with a chuck that has an actuator device that is mounted to the housing of the drill and is spaced from the chuck so that a user can activate the chuck between a “chuck mode” and a “drill mode” from a switch mechanism that is mounted remotely from the chuck.

Abstract: A chuck device that prevents wear of ratchet teeth is provided. The chuck device includes a rotary sleeve which is rotated so that jaws inserted into a hole provided in a tip end of a body are slidingly opened and closed to thereby clamp a tool. Ratchet teeth forming an annular shape are provided in the body, an annular rotary member threadedly engaged with the jaws and rotated together with the rotary sleeve is fitted around the body inside of the rotary sleeve, a retainer spring member detachably engaging with the ratchet teeth is disposed outside of the ratchet teeth and the retainer spring member is provided so as to rotate a circumference of the ratchet teeth in accordance with the rotation of the rotary member. The ratchet teeth are formed of a harder member than the body, and the harder member is a discrete member from the body.

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: 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 is provided with a body, a plurality of jaws and an adjustment ring. The adjustment ring is threadably engaged with the jaws. When the adjustment ring is rotated in one direction, the jaws tighten by moving closer to each other. When the adjustment ring is rotated in the opposite direction, the jaws loosen by moving away from each other. An impact member is also provided for engagement with the adjustment ring. When the drive shaft of the power tool is rotated, the adjustment ring impacts against the impact member. As a result, the adjustment ring and the body of the chuck rotate relative to each other causing the jaws of the chuck to loosen or tighten depending on the direction the drive shaft is rotating.

Abstract: A combination of a chucking device and a drill and a chucking device for a drill with cutting tips on both ends. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. § 1.72(b). As stated in 37 C.F.R. § 1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: A chuck is provided with a body, a plurality of jaws and an adjustment ring. The adjustment ring is threadably engaged with the jaws. When the adjustment ring is rotated in one direction, the jaws tighten by moving closer to each other. When the adjustment ring is rotated in the opposite direction, the jaws loosen by moving away from each other. An impact member is also provided for engagement with the adjustment ring. When the drive shaft of the power tool is rotated, the adjustment ring impacts against the impact member. As a result, the adjustment ring and the body of the chuck rotate relative to each other causing the jaws of the chuck to loosen or tighten depending on the direction the drive shaft is rotating.

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 power drill chuck comprising a drill body, a nut, jaws, a front sleeve, a rear sleeve, a nut sleeve, and a rolling body, wherein jaws are mounted in inclined holes in the drill body. The nut thread constitutes a thread drive with the thread of the jaws. The front sleeve is connected with the drill body, wherein the nut sleeve is connected to the nut and extends backwards in a rear end having a plurality of projecting keys. The rear sleeve is mounted with and rotates relative to the nut sleeve and the drill body. The rear sleeve includes annular holes and a plurality of keys on its inner end surface. A positioning sleeve is connected to the drill body to position the rear sleeve on the drill body. A plurality of impact members are provided with a plurality of elastic deformation portions and projecting keys.

Abstract: The invention relates to a clamping device for removably mounting a tool (3) or a tool fixture in a receiving part (1). Said clamping device comprises several pincers elements (33) which are concentrically arranged around a central axis (32) within the receiving part (1) and are impinged upon by a tension spring (39) so as to be moved into a clamping position in order to brace the tool (3) or the tool fixture. In order to be able to automatically replace a tool without using much force and energy, an axially movable closing element (17) is assigned to the pincers elements (33). Said closing element (17) impinges the pincers elements (33) in a forward position that is advanced in the direction of the pincers elements (33) for mounting purposes in the clamping position thereof, which is swiveled inward by means of the tension spring (39), while being movable into a retracted position with the aid of a detaching device (12, 16, 45, 46, 47) in order to release the pincers elements (3).

Abstract: A chuck has a generally cylindrical body having a nose section and a tail section, the tail section being configured to rotate with the drive shaft of a driver and the nose section having an axial bore formed therein. A plurality of jaws movably disposed with respect to the body and in communication with the axial bore. A nut rotatably mounted about the body and in operative communication with the jaws. A catch formed on one of the drive shaft and the chuck body that receives a lock body forward of and rotationally fixed to the driver housing. The lock body is moveable between a first unlocked position at which said chuck body is rotatable with respect to the driver housing and a second lock position at which said lock body engages said catch to rotationally lock said chuck body to the driver housing.

Abstract: An apparatus for chucking workpieces (13; 13a, 13b, 13c, 13d, 13e, 13f, 13g, 13h, 13i, 13j) on a machining center (1) includes a base plate (22) having a holding fixture for a clamping jaw (10) of the machining center (1) and at least one clamping surface protruding upwardly from the base plate (22) in the used position and including a plurality of workpiece holding fixtures. An improved possibility for use can be achieved in such a way that the clamping surface is arranged in an integral manner with the base plate (22).

Abstract: A chuck for use with a manual or powered driver having a rotatable drive shaft, the chuck having a generally 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 formed on one side thereof and threads formed on the opposite side. 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 tightening indicator having a first ring received operatively between the jaws and the body and a second ring rotationally coupled to and in operative engagement with the sleeve and the first ring.

Abstract: A chuck for use with a manual or powered driver including a generally cylindrical body having a nose section and a tail section. The tail section defines an axial bore formed therein to mate with the drive shaft of the driver and the nose section defines an axial bore formed therein and a plurality of angularly disposed passageways formed therethrough and intersecting the axial bore. A plurality of jaws is slidably positioned in each passageway and each jaw defines a jaw face formed on one side and threads formed on the opposite side. A nut is disposed about the body for rotational movement with respect to the body and is in driving engagement with the jaw threads. A generally cylindrical front sleeve overlays the nose section of the body. A generally cylindrical nut retainer is disposed about the body and includes a frusto-conical portion.

Abstract: Sliding in the body of the chuck are jaws whose external thread is engaged with the internal thread of a nut mounted to rotate on the body. The nut is rotated by a sleeve, allowing the jaws to move. The chuck includes radial locking device which can be actuated by a rotation of the sleeve so as to inhibit rotation of the nut with respect to the body, and axial locking device which can be actuated by an axial movement of the sleeve and make it possible to prevent the radial locking device from being actuated. Sequencing device is designed to prevent the axial locking device from passing into the locked position while the radial locking device is not in the locked position.

Abstract: The present invention publicly discloses a self-locking mechanism of a manually tightened drill chuck, including a ratchet wheel, a clamp bearing, at least one resilient pawl, and a clip ring, wherein said ratchet wheel is fixed in connection with the main unit of said manually tightened drill chuck, and on its back there are provided ratchet teeth facing the end surface of said main unit; said clamp bearing is fixed in connection with the outside surface of a screw ring on said manually tightened drill chuck, and the end surface of this clamp bearing is provided with at least one ratchet wheel slot; said resilient pawl is fixed on said ratchet wheel slot, and it includes a protuberance and a tooth piece; and said clip ring includes at least two arc segments that can mutually antagonistically snap onto the front end position of said main unit, the outer perimeter surface of this clip ring is fixed in connection with a front cap of said manually tightened drill chuck, said clip ring is connected with said clam

Abstract: A drill chuck has a chuck body, a jaw holder element rotatable on the body and formed with a plurality of angularly spaced guides, and a sleeve element surrounding the holder element and body. Jaws in the guides can be shifted in the guides forward and together on rotation of the holder element in a tightening direction relative to the body and oppositely on rotation of the holder element relative to the body in an opposite loosening direction. Interengaging formations on the sleeve element and on the body limit relative angular movement of the sleeve element on the body between a pair of angularly offset end positions. An annular array of teeth rotationally fixed to the sleeve element can be engaged by a pawl angularly fixed on the holder element. A release ring rotatable the body rearward of the sleeve is rotationally coupled to one of the elements.

Abstract: A drill chuck has an externally toothed body, a plurality of jaws, and a tightening ring rotatable on the body in tightening and loosening directions. Screwthreads between the tightening ring and the jaws move the jaws radially. A pawl engageable with the teeth is angularly fixed on the tightening ring and can shift between a retaining position engaging the teeth and a freeing position disengaged from the teeth. An adjustment sleeve is limitedly angularly displaceable on the body relative to the tightening ring between a locked end position and an unlocked end position. A cam on the adjustment sleeve can displace the pawl into the retaining position when the adjustment sleeve is in the locked end position and into the freeing position when the adjustment sleeve is in the unlocked end position. A locking part can engage the pawl in the retaining position thereof to lock the chuck.

Abstract: A drill chuck has a chuck body centered on and rotatable about an axis and a plurality of jaws spaced angularly about the axis, radially shiftable on the body between inner and outer positions, and each having a grip edge extending along a line substantially parallel to the axis and a pair of flanks meeting at the grip edge and extending generally radially outward therefrom. The flanks of each jaw diverge radially inward from the flanks of adjacent jaws so that a tool shank engaged between the flanks of two adjacent jaws will be pushed radially toward the axis on movement of the jaws inward from the outer positions.

Abstract: The invention discloses 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.

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 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 tool chuck may include a chuck body that supports chuck jaws. The chuck body may define a longitudinal axis. A driven gear may be mounted for rotation on the chuck body. The rotational axis of the driven gear may be parallel to the longitudinal axis of the chuck body. A nutating gear may be provided on the chuck body. The nutating gear may be nutatable about the chuck body to rotationally drive the driven gear relative to the chuck body so that the chuck jaws move along the longitudinal axis of the chuck body.

Abstract: A grip assembly for one of a clutch cap for a clutch mechanism, a rear sleeve or front sleeve for a chuck assembly having a chuck mechanism with a plurality of adjustable jaws. The grip assembly includes an inner sleeve having open top and an open bottom opposite the top and defining a longitudinal axis with a peripheral wall disposed between the first end and the second end and an elastomeric grip comprising a plurality of spaced apart ribs extending generally circumferentially about an outer surface of the front sleeve. An optional a cover can encircle the inner sleeve and have a plurality of spaced apart apertures to receive respective ribs.

Abstract: The present invention relates to a self-tightened reverse locking chuck, comprising: a body member, a nut, jaws, a bearing, a drive sleeve, a front sleeve, an annular drive member, a movable ratchet wheel, a reverse locking ratchet wheel, a detent lock ring, a control ring and a control ring outer sleeve. The drive sleeve is positioned in a central hole in the rear end of the body member via a spring ring, drive keys on the drive sleeve can drive the annular drive member and the detent lock ring to rotate, in the chucked state, locked by the control ring. The chuck according to the present invention has the function of self-tightening, preventing the clamping force from being excessive, and of performing reverse rotation operation. The chuck is easy to assembly and disassembly, a tool shank clamped by the chuck will not be loosened due to vibration or shock, and the chuck is adapted for use in tools with various type of shank.

Abstract: A tool bit stop located on an inner surface of a clamping jaw of a drill chuck. The tool bit stop is located a distance from a jaw gripping surface of the clamping jaw. The tool bit stop is adapted to provide a surface to register an end of a tool bit in a consistent location relative to the jaw gripping surface. The tool bit stop is shaped to allow advancement and retraction of the clamping jaws without interference from the tool bit stop.

Abstract: A chuck to this disclosed which has a central body for including a nose section 6 and a tail section 8. A central portend is formed through the chuck to and a plurality of passageways 12 are angled thereto. Jaws 14 may move through the passageways 12 in response to rotation of a rotatable nut 20 which is in screw thread engagement with the jaws 14. A bearing member 36 is disclosed which sits in a tapered portion between the body for and the nut 20 so that radial displacement of the bearing 36 causes the chuck to be locked against release.

Abstract: The central component of the chuck supports jaws that can be moved between a tool clamping position and a released position. Each jaw comprises a seat that is open towards the axis and has a back and lateral faces. A roller is fitted against the back of the seat and is rotatable about its axis parallel to the axis and translationally movable between the two lateral faces of the seat. The back of the seat forms a very flat V, in the center of which the roller positions itself when an operator tightens the jaws on the tool. Then, when the chuck is rotated, to the right, the roller rolls without sliding on the jaw and on the tool until it is wedged against the straight lateral face of the seat. Excellent clamping of the tool is thus obtained.

Abstract: A chuck for use with a manual or powered driver having a chuck body, jaws, a nut, a front sleeve, a rear sleeve, and a nut jacket is provided, wherein the jaws are respectively and operatively inserted into a plurality of angled bores uniformly distributed around the chuck body, the threads of the nut engages with that of the jaws to form a thread driving mechanism, the nut jacket is fixed onto the nut, a toothed member is fixed to the front portion of the chuck body, a plurality of elastic elements are formed at the front end of the nut jacket, a plurality of grooves are formed on the inner circumference wall of the front sleeve, wherein the positioning state of the elastic elements of the nut jacket can be controlled through the grooves of the front sleeve, and locking detents of the nut jacket and ratchets of the toothed member engage to form a locking mechanism, therefore the loosening of the drill tools due to the vibration or impact while using can be prevented.

Abstract: The present invention relates to a self-tightening keyless chuck to enable electric percussive drills to grip a tool shank. The chuck includes a rear sleeve, a body, a bearing ring, a bearing assembly, a nut, a jaw, a front sleeve and a stopper and so on. The bearing assembly utilizing a ball bearing is positioned with a circumferential arcuate race with a fixed depth, and the bottom surfaces of said circumferential arcuate race are provided with a plurality of ball-shape grooves. During the chuck grips a tool shank, the balls of said ball-bearing enter into the ball-shape grooves and are locked there, so as to prevent the tool from loosening due to the percussion vibration. In addition, the front sleeve engages with a nut through radial smooth press-fit to securely transmit a torque.

Abstract: A drill chuck having an adjustable depth stop to control an amount by which a tool bit, such as a drill or a screwdriver bit, is inserted into the drill chuck. The adjustable depth stop can include a spring, such as a conical spring, that can be coupled to a spindle of the chuck.

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: To provide an excellent chuck assembly that is superior in assembling workability, may be produced in low cost and is superior in mass-production property, in which a rotary sleeve (2) provided on a body (1) is rotated, jaws (4) engaged with rotary nuts (3) are moved back and forth to be opened and closed by the rotation of the rotary nut (3) rotated together with the rotary sleeve (2) and a tool is clamped by the jaws (4), a ring member (8) is provided in the rotary nuts (3), a convex and concave engaging means is provided between the ring member (8) and the rotary sleeve (2), and the ring member (8 and the rotary sleeve 2 are retained and prevented from falling apart from each other by the convex and concave engaging means.

Abstract: This is a chuck for equipping a rotary machine, comprising a body intended to be fixed to a drive shaft of the machine, in which there are mounted several jaws which slide in bores converging forward and which each have an outwardly facing threaded part, a sleeve being pivotably mounted on the body and having an interior wall which collaborates with a nut itself engaged with the threaded exterior part of the jaws. The body comprises, in its region covered by the nut, a peripheral set of teeth and the nut bears locking means which are intended to engage in the set of teeth of the body when the chuck is in the tightened position, and which are intended to be activated by the sleeve. The sleeve has an angular relative movement with respect to the locking means between an unlocked position in which the sleeve turns the nut and a locked position in which the chuck is in its tightened position.

Abstract: A chuck for equipping a rotary machine includes a body intended to be fixed to a drive shaft of the machine, in which there are mounted several jaws which slide in bores converging forward and which each have an outwardly facing threaded part, a sleeve being pivotably mounted on the body and having an interior wall which collaborates with a nut itself engaged with the threaded exterior part of the jaws. The body includes, in its region covered by the nut, a peripheral set of teeth and the nut bears locking means which are intended to engage in the set of teeth of the body when the chuck is in the tightened position, and which are intended to be activated by the sleeve. The sleeve has an angular relative movement with respect to the locking means between an unlocked position in which the sleeve turns the nut and a locked position in which the chuck is in its tightened position.

Abstract: A keyless chuck is provided, comprising a generally cylindrical body having a forward and rearward portion with respect to an axis, the forward portion including a radially outwardly projecting portion of the body. The body further includes a plurality of guides extending obliquely to the axis and converging toward the forward section, and a groove extending around the body. Each of a plurality of jaws is slidably disposed within a respective guide and includes a thread section along an outer surface thereof. A jaw-engaging mechanism is configured to operably engage the groove so as to be rotatable around the body, and includes a thread section configured to complementarily engage the thread sections of the jaws. A sleeve extends over the jaw-engaging mechanism. A retaining member is disposed substantially within the sleeve, and is operably engaged with and extends between the body and the sleeve, rearwardly of the radially outwardly projecting portion of the body.

Abstract: A chuck includes a generally cylindrical body and a plurality of jaws reciprocally disposed in the body in communication with a central bore in the body. A first detent extends radially into the central bore and is releasable in a radially outward direction. Upon insertion of an elongated tool shaft having a polygonal cross section into the bore so that a groove in the tool shaft is aligned with the first detent, the first detent engages the groove and axially retains the tool shaft. Upon movement of the jaws so that the jaw faces engage flat sides of the tool shaft, the jaws rotationally retain the tool shaft.

Abstract: A chuck for use with a manual or powered driver that may also be used for hammer drilling. The chuck is constructed so that during normal operation for its intended purpose, the jaws holding a shaft for a tool do not loosen. The chuck includes at least one pawl to engage teeth on a gear ring such that rotation of a ring driver in a jaw gripping direction causes the gear ring to rotate. When the jaws tightly grip the shaft, the gear ring will frictionally engage a portion of the chuck so that the gear ring is rotationally locked to the chuck body. At the same time, the pawl engages the gear ring such that rotation of the ring driver and thus movement of the jaws in a non-jaw gripping direction is prevented during normal use of the hammerlock chuck.

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 self-locking drill chuck device includes a body, a nut, jaws, a front sleeve, a rear sleeve, a nut jacket and a rolling member. Three jaws are respectively and operatively inserted into three angled bores uniformly distributed around the body, the threads of the nut engages with that of the jaws to form a thread driving mechanism. A ratchet wheel is fixedly mounted at a rear portion of the body, a disk spring is provided between the rolling member and a load carrying shoulder of the body, the front portion of the body has key slots and an annular connecting groove, the rear end of the nut jacket has a plurality of driving grooves and keys on which a locking elastic element and a driving elastic element are respectively fixed. The drill chuck has a simple structure, convenience of operation and high working stability and reliability of self-locking capacity.

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 chuck includes a generally cylindrical body and a plurality of jaws reciprocally disposed in the body in communication with a central bore in the body. A first detent extends radially into the central bore and is releasable in a radially outward direction. Upon insertion of an elongated tool shaft having a polygonal cross section into the bore so that a groove in the tool shaft is aligned with the first detent, the first detent engages the groove and axially retains the tool shaft. Upon movement of the jaws so that the jaw faces engage flat sides of the tool shaft, the jaws rotationally retain the tool shaft.

Abstract: This invention relates to a power tool 1 of the kind having a driven member 15 adapted to releasably hold at least one working element 46. The power tool 1 can operate in either a working mode in which the driven member 15 is driven to enable the working element 46 to perform work, or an adjustment mode, in which the driven member 15 is adjusted to grip or release the working element 46. The power tool 1 includes a selector 17 operable to cause the power tool 1 to operate in either the working or adjustment mode. A power drill 1 is one form of power tool to which the invention is applicable.

Abstract: A chuck for use with a manual or powered driver including a generally cylindrical body having a nose section and a tail section. The tail section defines an axial bore formed therein to mate with the drive shaft of the driver and the nose section defines an axial bore formed therein and a plurality of angularly disposed passageways formed therethrough and intersecting the axial bore. A plurality of jaws is slidably positioned in each passageway and each jaw defines a jaw face formed on one side and threads formed on the opposite side. A nut is disposed about the body for rotational movement with respect to the body and is in driving engagement with the jaw threads. A generally cylindrical front sleeve overlays the nose section of the body. A generally cylindrical nut retainer is disposed about the body and includes a frusto-conical portion.

Abstract: A power driver includes a motor and a spindle having a distal end thereof opposite the motor. The distal end has an axial bore formed therein. A gear assembly is disposed operatively between the motor and the spindle so that the motor rotationally drives the spindle through the gear assembly. A grip is mounted in the spindle in communication with the axial bore. A driver is mounted about the spindle in operative communication with the grip so that activation of the driver in a closing direction moves the grip radially toward the axis and activation of the driver in an opening direction moves the grip radially away from the axis.

Abstract: A manually tightened drill chuck includes a drill body, a nut, a front sleeve and a rear sleeve. The front sleeve is provided on the front end of the drill body with the nut being provided in the middle. A decorative sleeve is mounted on the front end of the drill body with an external peripheral surface of the nut being housed in an inner sleeve by shrink fit. At least one key groove is located in the inner wall of the front sleeve. A key cooperates with the key groove. At least one locating member is provided in the lower end of the key that includes a hole. The front sleeve further defines at least one protrusion that corresponds to the position of the hole for snapping into the hole. Accordingly, the stability of the front sleeve and the rear sleeve without radial vibration is achieved.

Abstract: A locking drill chuck comprises a chuck body, a plurality of jaws, a nut, a nut jacket, 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 a locking assembly provided between the nut and a stop plane of the chuck body, the locking assembly comprises a locking cap, rolling members, and a locking plate, wherein the locking plate has a plurality of helical grooves with helix angle in an end plane thereof, the rolling members are received in the helical grooves, the locking cap has resilient tabs securing the locking plate together with the plurali

Abstract: A keyless chuck is provided, comprising a generally cylindrical body having a forward and rearward portion with respect to an axis, the forward portion including a radially outwardly projecting portion of the body. The body further includes a plurality of guides extending obliquely to the axis and converging toward the forward section, and a groove extending around the body. Each of a plurality of jaws is slidably disposed within a respective guide and includes a thread section along an outer surface thereof. A jaw-engaging mechanism is configured to operably engage the groove so as to be rotatable around the body, and includes a thread section configured to complementarily engage the thread sections of the jaws. A sleeve extends over the jaw-engaging mechanism. A retaining member is disposed substantially within the sleeve, and is operably engaged with and extends between the body and the sleeve, rearwardly of the radially outwardly projecting portion of the body.

Abstract: A filter device comprises a clear plastic cylinder member with a pair of ends each bearing fittings conditioned to connect to an existing air supply line. At least one of the fittings bears a quick-release feature enabling ready access to that end of the cylinder member. The cylinder provides a housing for one or more standard cotton rolls, such as those typically used in a dental office, which provide the filtering medium. Thus, dental office personnel can visibly monitor the cotton rolls through the clear cylinder member, enabling easy viewing of the impurities captured by the cotton rolls, and determination of when replacement of the cotton rolls is necessary.