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 body is formed with angled guides holding respective jaws. A tightening ring rotatable about the axis on the chuck body has a screwthread meshing with toothed edges of the jaws so that rotation of the ring in one direction moves the jaws axially forward and radially together and opposite rotation moves the jaws axially rearward and radially apart. A spring washer is rotatable about the axis on the body between the tightening ring and the rear jaw faces. Rearwardly directed jaw faces axially rearwardly engage and press the washer toward the tightening ring and coupling formations on the washer and ring angularly lock the washer to the ring when the washer is pressed axially rearward by the faces. Stops on the washer can engage the jaws for permitting only limited relative angular movement of the washer and jaws when the faces are pressed axially rearward against the washer.

Abstract: A drill chuck has a chuck body rotatable about a chuck axis and having a rear end adapted to fit with a drive spindle and a front end formed with a tool recess. A plurality of jaws angularly spaced on the body about the axis and exposed in the tool recess are radially displaceable relative to the body between inner and outer positions. A tightening ring is axially fixed but rotatable about the axis on the body. Screwthread formations between the tightening ring and the jaws can move the jaws radially together and radially apart. A tightening sleeve surrounding the body and connected to the tightening ring is adapted to be gripped by hand to rotate the ring in the directions. A shield sleeve surrounds the body between the tightening sleeve and the body front end and is supported on the body for rotation thereon about the axis independently of the body and of the tightening sleeve.

Abstract: An anti-slip type electric drill chuck mainly includes a body which is obliquely provided with three pawls for clamping a drill head. The outer surface of one end of the three pawls is provided with a threaded surface for engaging a tapered threaded hole in a bearing nut, which has an outer end with teeth, an end portion provided with a ball ring. A check nut protective sleeve encloses the ball ring and bearing nut, and has elastic pointed portions engage the teeth. A drive annular block engages the inner wall of the bearing nut. A front housing sleeve engages the drive annular block and surrounds the aforesaid components. The front housing sleeve is rotated by hand to advance or retract the pawls to thereby loosen or tighten drill head. When the pawls clamp the drill head, the check nut protective sleeve stabilizes the bearing nut to prevent slippage thereof.

Abstract: A drive spindle is formed with an axially forwardly open socket of noncircular section and with at least one radially throughgoing passage open radially inward into the socket. A chuck body has a stem of noncircular section complementary to that of the socket and formed with a radially outwardly open recess. A locking element is radially displaceable in the passage between an inner position projecting radially inward into the socket and an outer position clear of the socket and projecting radially outward from the spindle. The stem is fittable to the socket with its recess aligned with the passage. A collar is formed with an inner surface closely juxtaposed with an outside surface of the spindle and with a radially inwardly open recess.

Abstract: A drill chuck has a chuck body rotatable about a chuck axis and formed centered on the axis with an axially forwardly open tool receiving hole, an array of axially extending guides opening axially forward into the hole, a rear axially forwardly directed shoulder and a front axially forwardly directed shoulder. Respective externally toothed jaws axially displaceable in the guides mesh with an internally threaded actuating ring rotatable on the chuck body about the axis to axially displace the jaws in the respective guides. An elastically deformable support washer bears axially forward on the actuating ring and has an inner periphery bearing axially backward on the rear chuck-body shoulder. The washer bears on the rear chuck-body shoulder over a radial distance equal to at most one-half its radial dimension such that the support ring projects at least halfway from the chuck body.

Abstract: An anti-slip type electric drill chuck mainly includes a body which is obliquely provided with three pawls for clamping a drill head. The outer surface of one end of the three pawls is provided with a threaded surface for engaging a tapered threaded hole in a bearing nut, which has an outer end with teeth, an end portion provided with a ball ring. A check nut protective sleeve encloses the ball ring and bearing nut, and has elastic pointed portions engage the teeth. A drive annular block engages the inner wall of the bearing nut. A front housing sleeve engages the drive annular block and surrounds the aforesaid components. The front housing sleeve is rotated by hand to advance or retract the pawls to thereby loosen or tighten drill head. When the pawls clamp the drill head, the check nut protective sleeve stabilizes the bearing nut to prevent slippage thereof.

Abstract: A drill has a drive-unit housing having an end wall, a drive-unit spindle projecting along an axis from the wall, and a chuck body fixed to the spindle, formed with an axially forwardly open tool recess, and formed with a plurality of angled guide passages opening forward into the recess. Respective jaws displaceable in the passages are engageable in the recess with a tool. a rear plate mounted on the chuck body axially rearward of the jaws and projecting transversely of and closely axially juxtaposed with the housing end wall is formed with a hole communicating with at least one of the passages and having an outer end radially outside the end wall.

Abstract: A chuck for use with a manual or powered driver includes a generally cylindrical body having a nose section and a tail section. The tail section is adapted to rotate with the drive shaft. The nose section defines an axial bore with angular passageways for receipt of chuck jaws. The chuck includes a generally cylindrical sleeve in driving engagement with a nut mounted about the chuck body so that when the sleeve is rotated with respect to the body, the jaws will be moved thereby. The jaws are slidably positioned in the passageways and include a tool engaging face and threads on the opposite side thereof to engage threads on the nut. The body includes a thrust bearing ring received by the nut so that the thrust ring holds the nut against forward and rearward axial movement with respect to the body.

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 are 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 chuck has a body centered on an axis and formed with a rearwardly open bore adapted to fit with a drive spindle. Respective jaws are displaceable in angled guides of the body and a ring rotatable on the body has an internal screwthread meshing with the jaws for moving the jaws between their end positions on rotation of the ring. A latch element is radially displaceable on the body between a holding position projecting radially into the bore and locking the spindle therein and a freeing position clear of the bore. A sleeve is displaceable between a latched position forcing the element into the holding position and an unlatched position allowing it to move into the freeing position. A spring between the sleeve and the body urges the sleeve into the latched position. The spring is mostly forward of rear ends of the jaws in the rear-end positions thereof.

Abstract: A chuck includes a driver disposed on a chuck body and in engagement with the jaws so that at least one of rotation and axial movement of the driver with respect to the body opens or closes the jaws. A first detent is disposed in the body in communication with the jaws. At least one of the jaws defines a catch at a predetermined position so that the catch engages the first detent when the jaws are at a predetermined position on the body with respect to a chuck bore.

Abstract: To provide a chuck device for avoiding loosening of the fastened condition, in which an annular ratchet tooth wheel is provided in a body, an annular nut member that engages with the claws and rotates together with the rotary sleeve is provided inside the rotary sleeve and behind the ratchet wheel within the body, a retainer spring member that is composed of a leaf spring made of metal and detached and attached for engaging the ratchet tooth wheel is disposed outside of the ratchet tooth wheel, the retainer spring member is provided under the condition the retainer spring member is rotated around the ratchet wheel in accordance with a rotation of a retainer spring receiving sleeve within the retainer spring receiving sleeve that rotates together with the nut member and that is fitted around the nut member and made of metal, the retainer spring member is mounted on the retainer spring receiving sleeve by a convex/concave engagement means, a holder spring member that is composed of a metal made leaf spring form

Abstract: A lockable drill chuck has a body centered on and rotatable about an axis and formed with a plurality of angled guides opening axially forward at a front chuck end, respective jaws axially and radially displaceable in the guides and each formed with a row of teeth, and a tightening ring axially fixed but rotatable about the axis on the body and having a screwthread meshing with the teeth so that rotation of the inner ring on the body in a tightening direction displaces the jaws in their guides toward one other and rotation in a loosening direction displaces the jaws away from one other. A one-piece outer sleeve rotatable about the axis on the body is formed unitarily with a pressed-in radially inwardly projecting cam formation.

Abstract: A chuck includes a generally cylindrical body having a nose section and a tail section. The tail section is configured to rotate with the drive shaft, and the nose section has an axial bore formed therein. The body defines an air passageway extending through the body between the axial bore and an area about the tail section. A generally cylindrically sleeve is disposed about the body and substantially encloses the area. It is configured to extend to a housing of the drill so that air from the fan is forced into the area, through the air passageway and into the axial bore.

Abstract: A drill chuck has a chuck body centered on an axis and formed with a forwardly open seat and with a plurality of angled guides spaced angularly about the axis and open forward into the seat. Respective jaws slidable in the guides each have a toothed outer edge meshing with a screwthread of a tightening ring rotatable about the axis to axially and radially displace the jaws in the body. An adjustment sleeve rotationally coupled to the ring is rotatable about the axis on the body. It has an outer grip surface of a predetermined outer diameter and an indicia band axially offset from the grip surface and of an outer diameter smaller than the outer grip surface.

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 chuck includes a generally cylindrical body having a nose section and a tail section. The tail section is configured to rotate with the drive shaft, and the nose section has an axial bore formed therein. A plurality of jaws are movably disposed with respect to said body toward and away from an axis of the axial bore. A generally cylindrical sleeve is mounted about the body forward of the body tail section and extends rearwardly toward and surrounds the body tail section. A disc is mounted about the body tail section and defines a plurality of radially outward extending flexible tips that engage the sleeve.

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 chuck device includes a tube with a plurality of inclined holes defined therethrough and a plurality of clamping members are respectively inserted in the inclined holes. Each clamping member has teeth defined in an outside thereof. A nut is mounted to the tube and has threads defined in an inner periphery thereof so as to be engaged with the teeth of the clamping members. A groove is defined in the inner periphery of the nut and balls are received in the groove. A pressing ring is received in the nut and positions the balls. A sleeve is mounted to the nut and has protrusions on an inner periphery of the sleeve, the protrusions being engaged with notches defined in an outer periphery of the nut. When rotating the sleeve, the nut is rotated to move the clamping members.

Abstract: A chuck device includes a tube with a plurality of inclined holes defined therethrough and a plurality of clamping members are respectively inserted in the inclined holes. Each clamping member has teeth defined in an outside thereof. A nut is mounted to the tube and has threads defined in an inner periphery thereof so as to be engaged with the teeth of the clamping members. A groove is defined in the inner periphery of the nut and balls are received in the groove. A pressing ring is received in the nut and positions the balls. A sleeve is mounted to the nut and has protrusions on an inner periphery of the sleeve, the protrusions being engaged with notches defined in an outer periphery of the nut. When rotating the sleeve, the nut is rotated to move the clamping members.

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 chuck body is formed with angled guides holding respective jaws. A tightening ring rotatable about the axis on the chuck body has a screwthread meshing with toothed edges of the jaws so that rotation of the ring in one direction moves the jaws axially forward and radially together and opposite rotation moves the jaws axially rearward and radially apart. A spring washer is rotatable about the axis on the body between the tightening ring and the rear jaw faces. Rearwardly directed jaw faces axially rearwardly engage and press the washer toward the tightening ring and coupling formations on the washer and ring angularly lock the washer to the ring when the washer is pressed axially rearward by the faces. Stops on the washer can engage the jaws for permitting only limited relative angular movement of the washer and jaws when the faces are pressed axially rearward against the washer.

Abstract: A drill chuck has a chuck body rotatable about a chuck axis and formed centered on the axis with an axially forwardly open tool receiving hole, an array of axially extending guides opening axially forward into the hole, a rear axially forwardly directed shoulder and a front axially forwardly directed shoulder. Respective externally toothed jaws axially displaceable in the guides mesh with an internally threaded actuating ring rotatable on the chuck body about the axis to axially displace the jaws in the respective guides. An elastically deformable support washer bears axially forward on the actuating ring and has an inner periphery bearing axially backward on the rear chuck-body shoulder. The washer bears on the rear chuck-body shoulder over a radial distance equal to at most one-half its radial dimension such that the support ring projects at least halfway from the chuck body.

Abstract: A combination type electric drill chuck structure is mainly mounted on an electric drill. The chuck includes a drive body having head and tail ends, the middle thereof being provided with multiple inclined grooves for receiving multiple clamp pawls; a fixed shell secured fittingly at the tail end of the drive body; a sleeve threaded seat threadedly provided at head end of the drive body for engagement with the clamp pawls; a percussion ring provided with a spring for engaging the sleeve threaded seat in normal condition; a movable shell that utilizes an adjusting ring to adjust upper and lower positions. When the user turns the adjusting ring, the position of the movable shell can be adjusted to engage or disengage the sleeve threaded seat or fixed shell so as to achieve various operating modes of automatic percussion locking, manual locking and locking positioning of the drill bit.

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 are 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 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 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 body centered on an axis is formed with a rear axially open mounting hole, a front axially open tool recess, a passage extending axially between the hole and the recess, and a plurality of angled guide passages spaced about the axis and opening into the recess. Respective jaws displaceable generally axially in the passages each have a row of radially outwardly directed teeth. A tightening ring rotatable about the axis but axially fixed on the chuck body has an internal screwthread meshing with the teeth of the jaws. The chuck body has inner and outer nitrided surfaces hardened by nitrocarburizing.

Abstract: A chuck includes a generally cylindrical body member having a forward section and a rearward section. The rearward section is configured to mate with a manual or powered driver. A plurality of angularly disposed passageways is formed in the forward section of the body and intersect an axial bore formed therein. The body defines a ledge portion about its outer circumference and a front face transverse to the longitudinal body axis. One of a plurality of jaws is slidably positioned in each passageway. A nut is rotatably mounted to the body rearward of the ledge portion so as to engage the jaws. A generally cylindrical sleeve engages the nut and includes a flexible protrusion extending axially rearward from an inner circumferential surface of the sleeve proximate the sleeve forward end. The protrusion has a tab portion disposed rearward of the ledge portion and projecting radially inward of the outer circumference of the ledge portion to prevent forward axial movement of the sleeve with respect to the body.

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 are 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 chuck includes an integrally molded body member having a nose section and tail section. A plurality of jaws are slidably positioned in angularly disposed passageways in the nose section. A nut is rotatably mounted on the body and is in engagement with threads on the jaws. A reinforcing member is co-molded with the nose section about at least a portion of the outer circumference of the nose section. The tail section extends radially outward to form a gripping surface and axially forward to form a thrust bearing surface in operative engagement with the nut so that the nut transfers rearward axial force to the thrust bearing surface.

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 chuck for a manual or powered driver having a rotatable driveshaft includes a body having a front section and a rear section. A plurality of jaws are operatively associated with the body, and the jaws are adapted to engage a tool to be utilized by the driver. The body's rear section includes serrations extending outwardly therefrom. A sleeve member is pressed onto the serrations whereby the serrations dig into the sleeve to at least assist in rotationally securing the sleeve to the body.

Abstract: A drill chuck has a body having a front part and a rear part, and formed with a plurality of angled guides opening axially forward at the front part. Respective jaws axially and radially displaceable in the guides are each formed with a row of teeth engaging an internal thread of a one-piece and unsplit tightening ring axially fixed but rotatable about the axis on the chuck-body front part and having an inner diameter greater than an outer diameter of the chuck-body front part. Thus rotation of the tightening ring displaces the jaws in their guides. A one-piece and unsplit snap ring set in the chuck-body rear part bears axially forward on the tightening ring, is formed with an array of outwardly projecting teeth, and has an inner diameter greater than the outer diameter of the chuck-body front part. An adjustment sleeve rotatable about the axis on the body has a front end with a surface bearing directly on the chuck-body front part.

Abstract: A drill chuck has a body formed with an axially forwardly open tool-receiving recess and with a plurality of angled guides opening axially forward in the recess. Respective jaws axially and radially displaceable in the guides are each formed with a row of teeth. A tightening ring axially fixed but rotatable about the axis on the body has a screwthread meshing with the teeth so that rotation of the ring displaces the jaws in their guides. An adjustment sleeve is rotatable about the chuck axis on the body. The body has rearward of the tightening ring an outer surface directed toward an inner surface of the adjustment sleeve. Mechanism inside the adjustment sleeve couples the adjustment sleeve to the tightening ring. A support washer has an inner periphery axially fixed to the outer body surface and an outer periphery axially fixed to the inner adjustment-sleeve surface.

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 are 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 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 includes a generally cylindrical body member having a forward section and a rearward section. The rearward section is configured to mate with a manual or powered driver. A plurality of angularly disposed passageways is formed in the forward section of the body and intersect an axial bore formed therein. The body defines a ledge portion about its outer circumference and a front face transverse to the longitudinal body axis. One of a plurality of jaws is slidably positioned in each passageway. A nut is rotatably mounted to the body rearward of the ledge portion so as to engage the jaws. A generally cylindrical sleeve engages the nut and includes a flexible protrusion extending axially rearward from an inner circumferential surface of the sleeve proximate the sleeve forward end. The protrusion has a tab portion disposed rearward of the ledge portion and projecting radially inward of the outer circumference of the ledge portion to prevent forward axial movement of the sleeve with respect to the body.

Abstract: A chuck structure with locking and positioning functions includes a cylindrical body having head and tail ends, the middle thereof being provided with a plurality of inclined channels; a plurality of clamp pawls received in the channels; a limiting ring provided at the middle of the cylindrical body and having a plurality of equidistantly spaced apart through slots annularly provided at the center thereof for passage of the clamp pawls; a drive seat rotatably mounted at the head end of the body for enclosing and engaging the clamp pawls; and an outer shell for enclosing the drive seat. The outer shell includes upper and lower shell bodies. In use, the user turns the upper shell body to cause the clamp pawls to retract inwardly to clamp a tool, with the outer shell and the limiting ring providing a positioning effect so that the clamp pawls will not slip due to vibration or excessive torque, and the tightening force can be maintained.

Abstract: A chuck for a manual or powered driver having a rotatable driveshaft includes a body having a front section and a rear section. A plurality of jaws are operatively associated with the body, and the jaws are adapted to engage a tool to be utilized by the driver. The body's rear section includes serrations extending outwardly therefrom. A sleeve member is pressed onto the serrations whereby the serrations dig into the sleeve to at least assist in rotationally securing the sleeve to the body.

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: Chuck for use with a manual or powered driver including a nut rotatably mounted on the chuck body and in engagement with the threads of the chuck jaws. The chuck includes a self-contained anti-friction bearing assembly disposed between the nut and a thrust ring, as well as a generally cylindrical front sleeve member in driving engagement with the nut and overlying a nose section of the body of the chuck so that when the front sleeve member is rotated with respect to the body member, the jaws will be moved thereby. The chuck also includes a rust resistant decorative nosepiece as well as an improved nut retainer member.

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 chuck includes an integrally molded body member having a nose section and tail section. A plurality of jaws are slidably positioned in angularly disposed passageways in the nose section. A nut is rotatably mounted on the body and is in engagement with threads on the jaws. A reinforcing member is co-molded with the nose section about at least a portion of the outer circumference of the nose section. The tail section extends radially outward to form a gripping surface and axially forward to form a thrust bearing surface in operative engagement with the nut so that the nut transfers rearward axial force to the thrust bearing surface.

Abstract: A chuck for use with a manual or powered driver having a rotatable drive shaft includes a pawl having a deflectable burr biased toward a catch in a chuck driver. A chuck sleeve defines a cam surface disposed with respect to the catch and the burr so that the cam surface disengages the burr from the catch when the sleeve is in a first position with respect to the driver and releases the burr to engage the catch, and rotationally fix the pawl to the driver, when the sleeve is in a second position with respect to the driver. The pawl is rotationally fixed to the chuck body when the sleeve is in the second position.

Abstract: A quick-change chuck for a tool bit mounted to a drive shaft. The chuck includes a spindle with a tool end and a hub end where a bore extends into the hub end from a forward face. The bore has an inner end for receiving a tool bit. A sleeve is disposed around and rotatably connected to the hub end. The sleeve has a spindle side wall and an outer side wall. An air gap exists between the sleeve and the thrust washer on the spindle. Adjustable jaws protrude through the spindle into the bore at an acute angle and define an opening between the jaws. The jaws threadably engage the sleeve so that rotating the sleeve about the hub causes the adjustable jaws to move axially between an open position and a closed position. The open position occurs when the jaws are retracted from the bore and the closed position occurs when the jaws are extended into the bore. An bias member urges the jaws towards a closed position, and maintains the air gap between the thrust washer and the sleeve.

Abstract: A self locking device for a power tool includes a rod to be driven by the power tool, and three or more pawls slidably engaged in the rod for securing a tool member to the rod. A barrel includes an inner thread threaded with the threaded surfaces of the pawls. A follower is slid ably secured to the barrel and rotated in concert with the barrel and includes one or more teeth for engaging with the teeth of a striker and for allowing the striker to act onto the follower in a hammer striking way and to facilitate the action onto the tool member.

Abstract: A manually tightened chuck has a separated nut in (7) fixed in a recess at a front sleeve (10) with close fit, and jaws (9) engaged by respective thread part of each radial out surface with the nut, which enables to reciprocate synchronously within corresponding bores at a chuck body (1) by rotating the front sleeve, a rear sleeve (2) fixed with keys (11) around the periphery of rear part of the chuck body free from turning each other, a thrust ball bearing (6) and a spring (4) arranged between the front and rear sleeves act for separating the relative movement of the sleeves and applying a final gripping force after the jaws touch a drill bit.

Abstract: A self-locking chuck includes a body having one end for attachment onto a rotatable spindle and another end provided with a plurality of axially inclined jaw members having threaded surfaces formed on their outer sides for engagement with a threaded socket. Top and bottom cover shells are disposed, respectively over forward and rearward sections of the body, and a flexible thrust bearing ring assembly is disposed within the bottom cover shell. A spring and thrust bearing ring are disposed within the bottom cover shell for flexibly engaging the top cover shell and jaw members that move back and forth with the rotational force produced during use to grip or release a drill bit and permit adjustment of the engagement between the threaded socket and thrust bearing ring through manipulation of the top cover shell.