Abstract: A chuck assembly includes a chuck body rotatable about an axis, a plurality of jaws each received within a slot of the chuck body for co-rotation with the chuck body about the axis, a wedge engageable with an outer surface of each jaw, a pusher coupled to the plurality of jaws to bias the plurality of jaws in a forward direction into engagement with the wedge, and a tightening sleeve threadably coupled to the chuck body for relative rotation with the chuck body. The tightening sleeve includes a clamping surface engageable with the wedge for inwardly displacing the plurality of jaws in a radial direction, causing the plurality of jaws to secure a tool bit received within the chuck assembly, in response to rotation of the tightening sleeve relative to the chuck body in a tightening direction.

Abstract: The invention relates to a chuck having a sleeve, a chuck body, a plurality of chuck jaws, an adjusting mechanism configured to adjust relative movement between the chuck jaws and the chuck body, at least one locating member and a pushing mechanism. The locating member is disposed on the chuck body between the adjacent chuck jaws. When the adjusting mechanism drives the chuck jaws to approach to each other relative to the longitudinal axis, the pushing mechanism pushes the locating member to move towards the longitudinal axis. When the adjusting mechanism drives the chuck jaws to move away from each other relative to the longitudinal axis, the pushing mechanism pushes the locating member to move away from the longitudinal axis. Therefore, the operation is more convenient and safer; the aligning effect is precise and reliable, and the pre-tightening force is stable.

Abstract: In a handheld machine tool having a tool holding fixture, which has a multi-faced inner receptacle and a multi-faced outer receptacle, the multi-faced inner receptacle being configured for the connection to a first tool insert, which is able to be locked in the multi-faced inner receptacle using a locking device assigned to the tool holding fixture, and the multi-faced outer receptacle being configured for the connection to a second tool insert, which has an inner multi-faced coupling that is able to be slid onto the multi-faced outer receptacle. The locking device has an actuating element, which is rotatable about a longitudinal axis of the tool holding fixture for unlocking the first tool insert from a specified locking position into a specified unlocking position.

Abstract: A collet comprising a cylindrical body comprising a first end and a second end and an aperture coaxial within the cylindrical body. The aperture is configured for receiving a medical device and for securing the medical device by decreasing in diameter when pressure is applied to at least one of the first end and the second end of the cylindrical body.

Abstract: A power tool having a tool portion, a chuck and a lock. The tool portion has a housing, a motor, and a spindle driven by the motor. The chuck has a body coupled to the spindle for rotation therewith, and a sleeve rotatably disposed about the body. The lock has a first lock structure pivotally coupled to the housing about a pivot axis, and a second lock structure. The first lock structure has a first locking feature. The second lock structure has a second locking feature and is coupled to the sleeve for rotation therewith. Pivoting the first lock structure into a first pivot position positions the first locking feature in a rotational path of the second locking feature. Engagement of the first and second locking features inhibits rotation of the sleeve so that rotation of the spindle will cause corresponding rotation of the body relative to the sleeve.

Abstract: A power tool clamping device comprises at least one clamping unit having at least one movably mounted force-fit clamping plane element and at least one actuating element configured to move the at least one force-fit clamping plane element to clamp a working tool at least in a clamping position. The at least one actuating element is mounted movably relative to the at least one force-fit clamping plane element along at least two at least substantially mutually transverse movement directions of the at least one actuating element.

Abstract: A quick-clamping mechanism for an electric hammer for clamping fasteners such as nails includes a biasing assembly for making the clamping assembly movable between a closed position and an opened position. The clamping assembly includes at least two clamping claws, pivotally connected to a pivot shaft including the combination of a torsion spring and a magnet. Fasteners such as nails and the like, can be clamped or released by the two clamping claws rotating relative to the pivot shaft, so that the quick-clamping mechanism has a simple structure and is easily implemented. The two clamping claws can be automatically closed, after a nail is loaded, by providing a torsion spring or a magnet on the two clamping claws, so that the quick-clamping mechanism can be operated expediently and the nail clamped securely.

Abstract: A tool holder includes: a collet chuck main body having a tapered hole formed in its tip end portion so as to be tapered toward an axial rear end; a tapered collet having a tool insertion hole that extends in an axial direction, a main tapered surface that fits in the tapered hole, and a tip end tapered surface positioned on an axial tip end side of the main tapered surface, and tapered toward an axial tip end; a cylindrical lock nut having internal threads that are screwed on external threads formed on an outer periphery of the tip end portion of the collet chuck main body, for reducing a diameter of the tool insertion hole by pressing the tapered collet into the tapered hole; a tip end tapered member having a tapered abutting surface that fits on the tip end tapered surface, the tip end tapered member being pressed toward the axial rear end by the lock nut; and a plain bearing positioned in a plane perpendicular to a direction in which the tip end tapered member is pressed by the lock nut, the plain bearing

Abstract: The invention relates to a high-precision clamping device for tools in machine tools of the conventional type according to ISO 15488 and to a collet chuck, a base and a tensioning nut. The invention also relates to a chuck key for tightening the locknut without radial stress. The clamping device according to the invention is characterized by a substantially improved runout accuracy, torsional rigidity of the collet chuck and rigidity of the tool clamped therein.

Abstract: It is an object of the invention to provide a constituent member of a collet chuck, a collet and a fastening nut as well as a collet chuck capable of reinforcing a holding force of a tool.

Abstract: A tool assembly in which a tool is removably secured to a tool holder. A sleeve of the tool is first fitted onto a shaft of the tool holder and then, by symmetrically radially expanding the shaft, the tool is secured to the tool holder.

Abstract: A gear reducing collet nut assembly is provided for holding a tool bit. The assembly includes an outer grip sleeve that can be rotated to actuate a clamping structure with a bore for holding a tool bit. More specifically, the assembly includes a planetary gear system to amplify torque from the grip sleeve to facilitate effective manual operation. The assembly includes a base member that is securable to a shaft of a rotary power tool, and the planetary gears are rotatably mounted at a plurality of positions on the base member. The planetary gears are driven by a central sun gear that is fixed to the grip sleeve. The planetary gears deliver torque to a ring gear that extends peripherally around the planetary gears. Movement of the ring gear is effective to actuate the clamping structure. In an embodiment, an exterior of the ring gear is threaded to the base member and axially fixed relative to the grip sleeve.

Abstract: A chuck apparatus includes a socket, a plurality of claws, a plurality of springs and a claw driver. The socket includes a conical portion, a cylindrical portion and a thread formed on an internal face of the cylindrical portion. The claws are put in the conical portion of the socket. Each of the springs is connected and compressed between two of the claws. The claw driver includes a bolt and a thread formed on the bolt for engagement with the thread of the socket so that rotation of the claw driver relative to the socket is transformed to movement, thus pushing the claws toward one another on an internal face of the conical portion of the socket.

Abstract: A clamping jaw for a tool holder chuck, wherein the clamping chuck has two clamping jaws arranged spaced apart and diametrically opposite one another relative to an axis of rotation of the clamping chuck and moveable toward and away from one another for clamping a tool shaft by moving the clamping chuck with a radial component, has a longitudinal slot having a slot mouth open toward the axis of rotation and a slot bottom. The longitudinal slot receives positive-lockingly the tool shaft and has slot flanks defining an approach angle at the slot mouth and a slot bottom angle at the slot bottom. The approach angle is greater than the slot bottom angle. The clamping jaw is manufactured with a disc milling cutter with opposed milling cutter flanks located radially outwardly and positioned slantedly relative to one another at different flank angles. The flank angles increase toward a center of the cutter body.

Abstract: A miniature drill chuck has a drill chuck housing and a thrust member positioned in the interior for moving clamping jaws into their clamping position during a threading movement of the drill chuck housing onto a machine spindle. The thrust member is longitudinally moveable in a guide bore of the drill chuck housing while being centered circumferentially about its entire stroke. A pair of truncated cone surfaces is provided between the machine spindle and the thrust member, wherein the machine spindle centers the thrust member via the pair of truncated cone surfaces when loading the thrust member.

Abstract: A chuck is provided for use with a manual or powered driver, such as a drill. The chuck has a body member with angularly disposed passageways formed therethrough. A plurality of jaws are slidably positioned within the angularly disposed passageways. The jaws grip upon a tool shank inserted into the body member. A nut is rotatably mounted on the body member and has nut threads defined on an inner circumference thereof in engagement with the jaw threads. A sleeve member is in driving rotational engagement with the nut whereby when the sleeve is rotated with respect to the body member, the jaws are also moved within the passageways. A rotational stop is defined between the nut and jaws wherein upon the jaws reaching a predetermined position within the passageways, further rotation of the nut in an opening direction is prevented. The stop comprises a radially extending surface defining an end of the nut threads. The radially extending surface contacts a side surface of at least one of the jaws.

Abstract: A collet chuck device has a body member with a frustoconical recess defined therein. A collet is disposed within the recess. A nut member is rotationally configured on the body member to move the collet axially within the recess. The nut member has an outer sleeve member and an inner sleeve member concentric within the outer sleeve member. The inner sleeve member is threadedly engaged on threads defined on the body member and contains ball grooves defined on an outer circumferential surface thereof. The outer sleeve member has ball grooves defined on the inner circumferential surface thereof and rolling bodies are operably disposed in the ball grooves so that the outer sleeve member is rotatable relative to the inner sleeve member.

Abstract: A chuck for use with a manual or powered driver having a drive shaft is provided. A generally cylindrical body has a forward section and a rearward section, the rearward section adapted to mate with the drive shaft of the driver. A gripping mechanism is actuatable to a closed position in which the gripping mechanism axially and rotationally retains a tool with respect to the body and to an open position in which the gripping mechanism does not so retain a tool. An annular nut is disposed about the body and has a threaded portion in threaded engagement with the gripping mechanism so that rotation of the nut about the body in a closing direction actuates the gripping mechanism to the closed position and rotation of the nut in an opening direction, opposite the closing direction, actuates the gripping mechanism to an open position.

Abstract: A sealed collet having improved radial flexibility is provided for facilitating removal from a locknut of a chuck assembly. The sealed collet includes a collet body formed from a tubular configuration of elongated gripping fingers separated by elongated slots which render the body radially resilient in response to pressure applied by a locknut. The slots are filled with a bonding agent, which may be a silicon rubber compound, for preventing dirt and debris from entering the collet slots and for preventing pressurized coolant intended to flow through a bore in a tool shank from flowing through the walls of the collet body. To increase the radial compressibility of the collet, agent-free gaps are provided in the slots immediately behind a distal portion of the collet body. In the preferred embodiment, the length of the agent-free gap is between 20% and 30% of the overall length of its respective slot.

Abstract: A handle assembly having a swivel head for detachably holding a blade, includes a substantially elongate handle having a proximal end and a distal end, the proximal end is formed with a threaded shank having a having a hemispherical socket at the end thereof, a sleeve having a threaded socket on one end for threadably mounting on the threaded shank and having an open slot extending from the other end to intersection of the threaded bore and partially along the length thereof, a blade mounting head comprising a threaded cylindrical body having a shank extending from one end, the shank adapted for receipt in the open slot and having a spherical tip for receipt in the threaded bore and engagement with the sleeve and the semi-spherical socket, the body adapted for swiveling on the spherical tip in the socket and slot, an axial bore extending coaxial of the threaded cylindrical body from the other end, an elongated collet having a longitudinal axis and inner walls surrounding an axial passage and first and second

Abstract: A quick release chuck device includes a body member and a device for attaching the body member to a drive spindle. A chamber in the body member receives a conventional collet. Thread grooves are defined on the outer circumferential surface of the body member. An operating sleeve is rotatably mounted on the body member and includes thread grooves defined on the inner circumferential surface. Rolling bodies are received in the thread grooves of the body member and sleeve member wherein the sleeve member is axially movable relative to the body member upon rotation of the sleeve member through engagement of the rolling bodies in the thread grooves. The sleeve member imparts a force to the collet in the chamber causing the collet to grip upon a tool shank carried therein.

Abstract: A holder assembly for a surgical blade includes a handle assembly and a wrench for loosening/tightening the blade from/to the handle of the handle assembly. The handle assembly includes a collet having two longitudinal slits that enable the collet to secure the blade in a first and second direction to prevent slippage during operation. The collet fits in the handle and is secured by a retaining member that fits over the collet with the blade intact. The retaining member is loosened/tightened by a wrench that is part of the holder assembly. The wrench is configured to cover the blade completely when the wrench is placed in operation. Part of the cover is removable for cleaning by inserting the closed end of the wrench into the wrench body and pushing the cover's cap off.

Abstract: A router collet for removably attaching a rotary cutting tool to a router drive shaft is provided having a body, a split collet, a nut and a retainer for retaining the collet and nut together to permit free rotation while limiting axial movement therebetween. This construction enables the nut when loosened to initially rotate with the split collet and cutting tool for limited axial distance whereupon further axial movement of the collet is constrained causing the split collet and nut to separate and the split collet to loosen its grip upon the cutting tool shank.

Abstract: A collet chuck 1 having a chuck body 3, a collet 11 disposed in the body 3, a nose ring 23 for radially compressing the collet 11, and a locknut 30 for axially moving the nose ring 23 into compressive engagement with the collet 11 is provided with a bearing assembly 45 disposed between the nose ring 23 and the collet 11 which loads compressive forces in a direction which is advantageously parallel to the axis of rotation A of the chuck. Both the locknut 30 and the nose ring 23 include flange portions 27, 43 that confront each other with opposing surfaces 47, 49 that are complementary in shape to the spherical profile of the ball bearings 50 and which traverse a line L parallel to the axis of rotation A of the chuck. The collet chuck 1 further includes O-rings 61, 65 disposed between the nose ring 23 and the locknut 30both in front of and behind the ball bearings 50 for sealing the bearing assembly 45 against dust and debris and retaining lubricant.

Abstract: A toolholder 1 of the type including a collet 5 integrally formed with a shank 3 is provided with an interface between a locknut 7 and collet 13 which substantially reduces the torque required to turn the locknut 7 into a position which radially collapses the collet segments 17. In this interface, one of either the inner locknut surface 23 or the outer surfaces of the collet segments 17 includes an engaging portion 56 for wedgingly flexing the collet segments 17 inwardly when the locknut is turned, and a non-engaging portion 58 disposed between the engaging portion 56 and the shank mounted ends of the collet segments 17. The non-engaging portion 58 reduces the torque required to turn the locknut 7 by reducing the binding forces that would otherwise occur between the ends of the collet segments 17 and the inner locknut surface 23.

Abstract: The center of a collet having a plurality of individual gripper members resiliently spaced apart in an annular array and operated on by a frustoconical surface can be adjusted by displacing some of the gripper members more than others of said gripper members parallel to the axis with which both the annular array and the frustoconical surface are nominally concentric. This causes the frustoconical surface to produce greater radial displacement of some of the gripper members, thereby shifting the center of the collet transverse to the above-mentioned axis.

Abstract: A compact tap wrench includes a ring-base, a pair of diametrically opposed handles, and a chuck mechanism friction-fit into the ring-base. A ratchet mechanism is built into one of the handles. The chuck mechanism includes interchangeable jaws for accommodating different ranges of tap sizes.

Abstract: A nose piece for properly positioning a member in a tool having a pair of symmetrical opposed nose piece members each of which have a longitudinal groove forming an opening therebetween. The nose piece members have opposed faces, one of which lies on the center line of the members and the other of which is angularly disposed to the center line to form a caming shoulder therebetween about which the members pivot to open and close the opening.

Abstract: A collet chuck has separable jaws which are freely slidable in a housing and have inner and outer faces engageable by inner and outer sleeves respectively, to urge the work-engaging ends of the jaws radially outwardly or radially inwardly. The jaws are readily replaceable by others of different effective gripping diameters, without the need for replacement of other chuck parts. The inner sleeve and a thrust element for moving the jaws relative to the inner sleeve are added to the assembly only when outward movement of the jaws is required.

Abstract: A hammer drill includes a tubular guide member for transmitting rotational movement to a tool and an anvil axially displaceably supported in the tubular guide member for imparting impacting force to the tool. An impacting mechanism within a cylindrical guide member is aligned with a tubular guide member for transmitting impacting force to the anvil. A tool holder is mounted on the front part of the tubular guide member and has a radially adjustable tool holding zone. The radial adjustment is effected by radially displaceable jaws cooperating with the conically shaped section of the tool holder. When the shank of a tool is inserted into the holder, by axially adjusting the conically shaped section, the jaws can be displaced inwardly into holding contact with the tool shank. For improved concentricity, the cylindrical guide member and the tubular guide member are formed as an axially extending unit.

Abstract: This is concerned with a cord grip for use with various types of electrical cord and more specifically involves a compression chamber with a distortable grommet which has independent gripper elements that are socketed into the grommet so that the gripper elements perform a compound closing action on the cord with the result that the cord grip has great flexibility as to the range of sizes and types of cords it will accept and as to the type of gripping action it will perform on different sizes of cords.

Abstract: The chuck assembly and the collet for retaining an end mill tool against axial pullout. The collet includes a radially compressible body having a tapered outer surface, a central bore and a drilled radial aperture extending from the outer surface into the central bore. The radial aperture has an undercut or larger diameter medial portion with a movable pin mounted therein, said pin being movably mounted and, adapted to extend into the bore to retain the tool. The pin has a hole drilled through with a spring bar mounted therein. The ends of the spring bar are compressed to a length smaller than the diameter of the radial aperture and inserted into the larger undercut portions where the expansion of the spring bar retains the pin. The hole in the pin is larger than the diameter of the spring bar to allow the pin to move along its axis (radially into the collet bar).

Abstract: There is disclosed a stand for releasably locking a pole-like member in upright position, especially for setting up a Christmas tree. The stand has a tubular holder in which are provided several equally plate-shaped clamping members. These clamping members can be simultaneously radially inwardly moved and also outwardly displaced, thereby adapting the stand for receiving tree trunks of different diameters and clamping the trunks by displacing the clamping members radially inwardly. Setting of the clamping members is effected by a setting device, operation of which acts simultaneously upon all the clamping members.

Abstract: A drill chuck having a body adapted for connection to a spindle and a clamping member rotatable on the body and operable to actuate clamping jaws. Cooperating and selectively releasable elements of a spring loaded pawl and ratchet device are carried by the body and clamping member and lock the clamping member to the body in clamping position.