Abstract: A shovel is provided having a handle, a support assembly and a blade. The support assembly comprises a substantially flat mounting base adapted for connection to the blade and having first and second ends and front and rear regions. A shaft positioned at first angle to the base. First and second arms symmetrically arranged with respect to the shaft. The first arm connects the first end of the base with a central region of the shaft, and the second connects the second end of the base with a central region of the shaft. The shaft is formed with a hollow channel with a reinforcing rod disposed within the channel.

Abstract: A handle assembly is disclosed for firmly holding a surgical tool. The handle assembly comprises a handle and a locking mechanism attached to the handle. The locking mechanism includes a locking ring, a collet, and a compressible locking pin engageable with the locking ring and collet. The locking ring is moveable between first and second positions relative to the handle. The first position is an unlocked position whereby the locking pin is in a decompressed state relative to the locking ring and the collet. In the first position, a surgical tool may be inserted and withdrawn from the collet of the locking mechanism. The second position is a locked position whereby the locking pin is in a compressed state relative to the locking ring and the collet. In the second position, a surgical tool is anchored in the collet of the locking mechanism.

Abstract: Provided is a rotary tool with a compact tip tool holding portion (80). The rotary tool is provided with a sleeve (81) attached to an output shaft (41) to switch a tip tool (70) between a fixed state and a detachable state. The output shaft (41) has a through hole (46) formed therein radially penetrating from the inside to the outside of a mounting hole thereof. The through hole (46) has a steel ball (85) provided therein such that at least a part of the steel ball (85) overlaps at least a part of a case (10). The sleeve (81) defines a first position in the outward direction of the steel ball (85), while the case (10) regulates a second position on the radially outer side of the first position.

Abstract: Provided is a system and method for a hand tool with a plurality of quick release work heads. The hand tool includes a handle having a socket having a first longitudinal axis and an inner cavity extending rearward from an open distal end, the inner cavity having a first non-circular cross section transverse to the first longitudinal axis, the socket further having a quick release transverse to the first longitudinal axis, the quick release releasably disposing a locker transversely across a portion of the inner cavity. The hand tool also includes at least one work head having a second longitudinal axis and a shaft having a second non-circular cross section concentrically conforming to the first non-circular cross section of the inner cavity, the shaft further having a locking groove transverse to the second longitudinal axis and disposed to engage with the quick release locker when the shaft is disposed within the socket of the handle. An associated method of use is also provided.

Abstract: A surgical instrument including a tool, a handpiece, and a locking member. The handpiece includes both a coupling member configured to cooperate with the tool, and a driver for rotating the tool. The locking member is movable from an unlocked position to a locked position in response to centrifugal force generated during rotation of the locking member. The locking member is configured to secure the tool to the handpiece when in the locked position.

Abstract: A bi-metallic bearing assembly is provided for an associated pump. The bearing assembly includes a sleeve formed of a first metal, and having at least one opening therein, and an insert formed of a different, second metal, wherein the insert is received in the sleeve opening. The sleeve is preferably formed using an additive manufacturing process. The insert and/or a separate face plate are preferably formed through a machining process, and the insert is mechanically joined to the sleeve, and the face plate is preferably mechanically joined to the sleeve and also advantageously retains the insert in the sleeve.

Abstract: A rotary tablet press has a rotating mold table and top and bottom punches, which can move reciprocally in punch guides, coaxially with the molds. The reciprocating motion of at least the bottom punches is cam-controlled and these punches are acted upon by a releasable punch dampener to prevent an overshoot of their movement and to ensure an action which is as free from wear. It is as maintenance-free as possible whilst maintaining constant damping of the bottom punches. The releasable punch dampener releases with one motion and has a linear release shaft with a release surface and a dampening surface.

Abstract: A system for transferring torque with zero lash from a driver to a driven object is provided. The system includes a shaft disposed about a rotational axis and a hub defining a bore that receives the shaft. The shaft and hub are each configured for coupling to one of the driver and driven object. The shaft defines a flat on a radially outer surface and the hub defines a flat on a radially inner surface opposing the flat in the shaft. In one embodiment, the shaft includes a threaded bore and the hub includes an aligned through bore. Rotation of a threaded fastener in the bores draws the flat into engagement. In another embodiment, the hub includes a threaded through bore. Rotation of a fastener extending through the bore and engaging the shaft diametrically opposite the flats urges the flats into engagement.

Abstract: An orthopedic rail system which has a first component with a receiving element and a second component with a connection end for connecting to the receiving element. The receiving element has two opposing stop walls, and the connection end has two opposing lateral walls. The receiving element and the connection end can be connected to each other by at least one connection element such that the lateral walls rest against the stop walls in the connected state. The stop walls and the lateral walls each taper towards each other in a conical manner.

Abstract: An illuminated surgical retractor system includes an elongate handle having a central channel for receiving a fiberoptic cable therethrough. A trailing end of the fiberoptic cable is operatively attached to a fiberoptic illuminator. The opposite leading end of the fiberoptic cable is releasably secured to an optical coupler positioned within the channel of the handle. A retractor blade assembly releasably supports a light carrier such that an inlet of the light carrier is releasably engageable with the optical coupler and the light carrier communicates with the fiberoptic cable. The light carrier includes a light projecting portion, which conformably engages a blade of the retractor blade assembly and which projects light conducted through the light carrier to illuminate the surgical site.

Abstract: An improved hand tool includes an improved handle apparatus. The handle apparatus includes an elongated handle having a non-circular external cross-section and further includes an elongated support that comprises an elongated end extending from the handle and having a substantially circular cross-sectional shape. A tool apparatus includes a tool and a socket, with the socket having an opening formed therein. The end of the handle apparatus is received with an interference fit in the opening formed in the socket to retain the handle apparatus and the tool apparatus together. A collar can additionally be provided about the socket to improve the aesthetic properties of the connection between the socket and handle and to increase the toughness of the connection therebetween.

Abstract: A boom stand adapted to support an electroacoustic device is constructed from a base, pivotal boom, stand elevating the pivotal boom, and a stacking counterweight. The stacking counterweight includes a terminal weight having a generally cylindrical body longitudinally terminated with a threaded coupler adapted to operatively couple with a threaded coupler on the boom, while aligning the terminal weight longitudinally co-axially with the boom. One or more medial weights having a generally cylindrical body and appropriate threaded couplers can be inserted between the boom and terminal weight. Each of the medial and terminal weights are preferably shaped to be adequately grasped by a person's palm and finger portion of a hand clasping about the longitudinal axis, and are thereby adapted to operatively permit manual rotation about their longitudinal axes.

Abstract: An object is to provide a drill bit with improved strength of joint between a bit tip and a bit shaft without diminishing dust suction performance of the drill bit. A drill bit 1 includes: a bit tip 3 including at least three cutting edge portions arranged at the distal end of the bit tip 3 such that they are spaced apart from each other in a circumferential direction, each cutting edge portion 3c having a rake face 3s and a relief face 3e forming a joint ridge L1 serving as a cutting edge; and a bit shaft 2 having a distal end face 2F welded to a proximal end face of the bit tip 3 such that the bit shaft 2 rotates integrally with the bit tip 3. The bit shaft 2 includes a dust suction passage 4 extending in the longitudinal direction of the bit shaft 2, such that the distal end of the dust suction passage 4 extends to a distal end portion of the bit shaft.

Abstract: The invention relates to a tool holder on a drill transmission for tubular drilling tools having at least two different diameters, wherein the holder is equipped with a hollow-cylindrical recess and with at least one radially oriented locking bolt which is installed in the wall of the hollow-cylindrical recess and which engages in a corresponding opening in the drilling tool, wherein there is at least one further hollow-cylindrical recess which is complementary to one of the different drilling tools.

Abstract: A hand tool plate clamp has a connecting shaft, a locking column, an abutting tube, a spring, and a sliding case. The connecting shaft has an insertion slot and a column hole. The insertion slot is mounted on an end of the connecting shaft and the column hole communicates with the insertion slot. The locking column is inserted movably in the column hole. The abutting tube is mounted on and abuts on the connecting shaft. The spring abuts on the abutment ring. The sliding case is mounted on the connecting shaft and the abutting tube. The sliding case abuts on the spring and the locking column Accordingly, the sliding case can be slid movably, and the spring can enable the sliding case to fix the locking column.

Abstract: A screwdriver head mounting structure includes a mounting base, a screwdriver head, a latching member and an elastic member. The mounting base defines a mounting hole and an eccentric latching hole communicating with and positioned eccentric to the mounting hole. The screwdriver head is detachably assembled to the mounting base. The screwdriver head has a latching end inserted into the mounting hole of the mounting base. The latching member is releasably and adjustably assembled to the mounting base together with the elastic member. The latching member passes through the eccentric latching hole and latches with the latching end of the screwdriver head.

Abstract: A depth gauge for use with a drill bit includes a body configured to receive a drill bit, a retention mechanism coupled to the body and configured to removably couple the body to the drill bit, and a cap configured to be removably coupled to the body. The cap can be coupled to the body in one of a first position relative to the body where the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a first depth, and a second position relative to the body where the cap contacts the workpiece surface to prevent the drill bit from entering the workpiece more than a second depth that is different from the first depth.

Abstract: A shrink-fit tool (21) includes a tool and a toolholder, one of the tool (23) and the toolholder (25) having a male shank portion (27) and the other one of the tool (23) and the toolholder (25) having a body portion (29) including female opening (31) for receiving the shank portion (27), the female opening (31) being adapted to change in size upon heating the body portion (29) to receive the shank portion (27) and upon cooling of the body portion (29) to clamp the shank portion (27) by an interference fit. The shrink-fit tool (21) also includes a mechanical retention member (33) disposed between the shank portion (27) and the body portion (29) for mechanically retaining the shank portion (27) in the female opening (31) so that the shank portion (27) is in its only predetermined orientation relative to the body portion (29).

Abstract: A tool holder. Implementations include a base unit which receives a shank of a cutting tool. A dowel movably coupled to the base unit engages an indentation in the shank under spring bias force to removably couple the cutting tool with the base unit. A sleeve slidably couples over the base unit, the sliding of which causes the dowel to ride in a first slot in the base unit and simultaneously in a second slot in the sleeve, causing the dowel to engage the indentation when the sleeve is slid in one direction and disengage the indentation when the sleeve is slid the opposite direction.

Abstract: The invention relates to a tool holder with a tool holding fixture, in particular a clamping chuck such as a contracting chuck, a draw-in collect chuck, a hydraulic expanding chuck and a high-precision chuck, and a shank of a tool, in particular a rotary tool, accommodated in it, wherein the tool holder contains a means for preventing the tool from being pulled out, locking it against axial displacement. This pull-out preventing unit comprises at least one locking element and at least one locking groove, which corresponds to the said locking element, receives it and interacts with it in a positively locking manner. In this case, both the locking element and the locking groove are formed at least partly in the manner of a ball head. Preferably, the tool has the locking grooves.

Abstract: It is an object of the invention to provide a tap holder in which even when an error is brought about in synchronizing spindle feeding and rotation of a tapper body and a tap collet of a tap holder in correspondence with a machine tool spindle, the synchronization can be established by absorbing the error by a simple constitution. As means therefor, the tap holder is characterized in that a tapper body and a tap collet are inserted by a locking member at portions of the tapper body and the tap collet overlapping each other, and the tap collet is fixed to the tapper body by engaging the locking member with at least one of the tap collet and the tapper body in a state of being interposed with an elastic member on both sides thereof in an axial direction X.

Abstract: An apparatus for increasing electric conductivity to a wafer substrate when exposures to electron beam irradiation is disclosed. More specifically, a more free mechanical contact between a wafer and electric contact pins (within an electrostatic chuck) is provided to significantly reduce the scratch and damage on the wafer backside.

Abstract: A screwdriver head mounting structure includes a mounting base, a screwdriver head, a latching member and an elastic member. The mounting base defines a mounting hole and an eccentric latching hole communicating with and positioned eccentric to the mounting hole. The screwdriver head is detachably assembled to the mounting base. The screwdriver head has a latching end inserted into the mounting hole of the mounting base. The latching member is releasably and adjustably assembled to the mounting base together with the elastic member. The latching member passes through the eccentric latching hole and latches with the latching end of the screwdriver head.

Abstract: A method and apparatus for providing an implant of autogenous bone. Generally, the implant may be taken from a selected bone portion and implanted into another selected bone portion within during a procedure. The method may be used in conjunction with soft tissue reinsertion or attachment to the selected implant site.

Abstract: A shrink-fit tool (21) includes a tool and a toolholder, one of the tool (23) and the toolholder (25) having a male shank portion (27) and the other one of the tool (23) and the toolholder (25) having a body portion (29) including female opening (31) for receiving the shank portion (27), the female opening (31) being adapted to change in size upon heating the body portion (29) to receive the shank portion (27) and upon cooling of the body portion (29) to clamp the shank portion (27) by an interference fit. The shrink-fit tool (21) also includes a mechanical retention member (33) disposed between the shank portion (27) and the body portion (29) for mechanically retaining the shank portion (27) in the female opening (31) so that the shank portion (27) is in its only predetermined orientation relative to the body portion (29).

Abstract: A system for use in securing an attachment to a driver having an attachment mounting area includes an attachment mount configured for releasable engagement with an attachment as well as a driver mount interconnected with the attachment mount. The driver mount includes a removable mounting member configured for engagement with the attachment mounting area of the driver.

Abstract: Described is a quick-change arbor for a tool, in particular a hole saw (2), the arbor comprising a longitudinal body (3) having a drive end and a tool end, means (6) for attaching the tool which are provided with a central hole allowing a sliding of the attachment means (6) over the longitudinal body (3), and means for rotationally and axially locking the attachment means (6) to the longitudinal body (3). The attachment means (6) are slidably releasable from the longitudinal body (3), and can after applying a latch (9-1) in the attachment means (6) simply be slid over the body in order to push a plug of the sawn material out of the hole saw (2).

Abstract: A mill blank mandrel may rigidly secure machinable material for a machining process. The mandrel may be freely and easily inserted in a corresponding mandrel socket and secured without the use of a tool. The mandrel may be detected and verified when inserted in the mandrel socket.

Abstract: A system for providing a mechanical and electrical connection between the ends of two essentially-coaxial shafts (1 and 2), whereby each shaft end includes a groove (11, 12) close to an axial end extension (17 and 8; 18 and 9). Moreover, the aforementioned ends are connected inside a sleeve (10) including the following: a first annular shoulder (13) having a shape that is complementary to that of the groove of the first shaft, such that there is no clearance therebetween; a second annular shoulder (14) having a shape that is complementary to that of the groove (12) of the second shaft, but with a clearance therebetween; and a cavity (16) which is intended to receive the shaft ends, said cavity having an axial height which is greater than the sum of the axial heights of the axial end extensions (17 and 8; 18 and 9). Further, the axial end extensions (17 and 8; 18 and 9) of the two shafts are in permanent mechanical and electrical contact.

Abstract: Embodiments are disclosed for a tool-less clamping apparatus for a reciprocating tool having a reciprocating spindle having a center axis and at least one radially oriented aperture and a receiving slot at its forward end for receiving a tool accessory, the apparatus having an unclamped position and a clamped position, and comprising a hollow generally cylindrical sleeve secured to the spindle, a hollow generally cylindrical collar configured to fit on the sleeve and being rotatable relative to the spindle and the sleeve, the collar having an inner cam surface that increases in radius from the axis through a first predetermined circumferential arc in a first direction, a spring operatively connected to provide a biasing force to the collar toward its clamped position, and a detent pin positioned in the spindle aperture and configured to engage a hole in the tool accessory and thereby firmly hold the tool accessory in the apparatus when urged into contact with the tool accessory.

Abstract: A quick release mechanism is provided. The quick release mechanism includes a shaft having a first end cap and a second end cap. The second end cap is attached to, or associated with, a lever designed and configured for actuating the quick release mechanism between closed and open positions and for use as a bicycle repair tool.

Abstract: The ramming device comprises a ramming element to be assigned to the end of a rock breaker. The inventive device receives the shocks generated by the rock breaker and transmits them to fragments to be compacted. The ramming device also has a frame comprising: positioning structure for positioning relative to the rock-breaker so that the axis of the frame is coincident with the axis of the rock breaker; joining structure that enable the temporary and removable fixing of the frame to the end of the rock breaker; axially translational guiding structure for guiding the ramming element relative to the frame; structure for blocking the rotation of the ramming element about the axis of the frame, and; structure for limiting the amplitude of this translation.

Abstract: A socket locking assembly includes an assembly column having a body, two extensions extending from a bottom face of the body, a positioning hole defined through the body and a retaining boss formed on a side face extending between the two extensions and a locking pin extendable into the positioning hole from a bottom of the assembly column and having a top stop, a bottom stop and a secondary positioning such that after the two extensions and the locking pin are extendable into the space of the socket and the top stop of the locking pin is extended through the positioning hole of the assembly column, abutment of the top stop with a top face of the body as well as the retaining boss and the secondary positioning boss received in the indents of the socket prevent the socket from removal.

Abstract: An extension for a bit or cutter tool relative to a rotational power source. The extension includes a blind bore receiving the shank of the bit or cutter. The opposite end of the body has structure that can be operatively connected to the source of rotational power. A second bore through the side of the body intersects the first bore. The second bore has two portions. The inner-most portion has a smaller diameter and is internally threaded. The outer portion has a larger diameter and slidably receives a clamping member. Clamping member can be retained by a shoulder bolt and has an end that can enter into the blind bore to clamp the shank in place. Preferably the clamping member is a sleeve having a center bore and a concentric exterior. Another aspect of the invention includes a biasing means that biases the sleeve outward of the bore.

Abstract: A high speed surgical instrument is designed with a clutch that automatically locks a cutter which is easily assembled and disassembled without moving parts. The clutch includes a pin and U-shaped pin that compliments a configured groove section at the proximal end of a cutter that fits into a clutch mechanism in the drill or attachment. The cutter includes axially spaced and opposed grooves judiciously located and a flat end portion that allows easy ingress and egress for locking into the clutch mechanism. A square or multi-sided bore configuration of a journal type bearing made from a high temperature resistance polymer material allows the drill to operate at high speeds with a reduction in the diameter of the distal end of the cutter support.

Abstract: A power drivable chuck 30 includes a body 72 which is formed with a shank-receiving opening 34 having a triangular cross section. A spring 104 is located about a forward section 78 of the body 72, and is captured within a chamber 102 between a base surface 98 of a sleeve 76 and a forward surface 100 of an intermediate section 80 of the body. A ball 90 is located in a passage 86 formed through the body 72 from an exterior surface 96 to the opening 34. A pair of slots 106 and 108 are also formed in the body in communication, and aligned, with the passage 86 on opposite sides of the passage. The ball 90 is formed with a through hole 112 and receives a pin 114 therein, with opposite ends of the pin extending from the ball and into respective ones of the slots 106 and 108. The spring 104 engages and normally urges the opposite ends of the pin 114 against the base surface 98 of the sleeve 76 normally to extend a portion 90a of the ball 90 into the opening 34 for locking a shank 42 within the opening.

Abstract: A device that adapts a wide range of appliances such as drills, awls, screwdrivers and sockets to use with a multifinctional pocket tool such as a pocket knife or other folding tool. The device firmly attaches the appliances to the multifunctional pocket tool so that the user can pull on the appliance in addition to pushing and turning. The adapter clamps firmly to flat blade such as a screwdriver blade by clamping to the blade with a screw and by forcing the sides of the adapter against the broad sides of the blade as well. The appliance is firmly retained by having a rigid thin rod or ball slide into the cavity in which the appliance is held to block its removal. The rigid thin rod or ball is easily moved out of the way to allow removal of the appliance.

Abstract: Finishing tool for precision machining of holes includes a chuck unit having a driving head and a replaceable cutting element which includes at least one cutting blade and a cylindrical support shaft that is provided with a drive pin projecting from the supporting shaft. The supporting shaft being is inserted into a cylindrical hollow of the driving head and the drive head includes a support groove for receiving the drive pin, while the pin is retained by a spring-loaded return movement prevention device.

Abstract: A saw blade clamping arrangement particularly for power reciprocating saws and similar tools having a reciprocating drive shaft connected to a cutting member such as a saw blade includes a clamping member movable relative to the drive shaft between a clamped position and a release position. A threaded fastener passes through an aperture formed in a portion of the clamping member and functions to move the clamping member to its clamped position upon selective rotation. A sleeve surrounds the threaded fastener for rotation therewith. When the sleeve is biased against the clamping member through the force of a biasing member, opposing surfaces prevent rotation of the sleeve.

Abstract: A cutting tool chuck holds a collet so as to be easily changed. In the cutting tool chuck, a fastening collar (12) is screwed on a chuck sleeve (14). The fastening collar (12) is provided with an internal guide groove (24), deep recesses (24a) formed in a side surface of the guide groove (24), and shallow recesses (24b) formed in the same side surface. A drive shaft (16) is axially slidably fitted in the chuck sleeve (14) with end portions (26a) of a drive shaft control member (26) laterally projecting from the drive shaft (16) and fitted in the guide groove (24). A collet (20) is detachably mounted on the front end of the drive shaft (16). The fastening collar (12) is turned so as to position the end portions (26a) of the drive shaft control member (26) at positions on the side surface of the guide groove (24) other than the deep recesses (24a) to hold the collet (20) on the drive shaft (16).

Abstract: A tool bit chuck for drilling and chiseling bits has an axially extending receiving sleeve (1) with an opening (3) therethrough in which latching elements (9) are radially displaceably supported. The latching elements (9) are radially displaceable by a spring loaded axially displaceable actuating element (10). An actuating sleeve (12) laterally encloses and is axially displaceable relative to the receiving sleeve (1). Connecting members fix (6, 13) the actuating sleeve to the receiving sleeve. The actuating sleeve (12) has a stop (14) cooperating with the actuating element (10) for applying an axial force to the actuating element for assisting in centering the drilling or chiseling bit.

Abstract: In the front head (11) of a machine hammer (10), transversely disposed wedges (18) are adapted to lock the working tool (12) so that the working tool (12) is axially movable by form-restricted cooperation with recesses (16) on the working tool (12). Each wedge (18) is locked in the front head (11) by a key (20), which extends across the wedge (18) into engagement with a transverse bore (21) therein. The key (20) has a releasable locking device including a locking element affixed in the front head (11) and formed by a polyurethane block (24). The block (24) is provided with a through bore (27) and has elastically form-recovering material properties. When, for purposes of locking the key (20), the key (20) is pressed through the bore of the block (24), the block (24) is caused to expand resiliently into an annular groove (22) on the key (20), thereby locking the key (20) in the front head (11) and providing its wedge (18) locking function.

Abstract: An impact power tool has a drive anvil with a square drive lug at one end thereof provided with a peripheral groove formed therein adjacent to its distal end. A socket tool body has a square socket receptacle mateable with the drive lug and defining flat planar drive surfaces. A bore extends transversely through the socket body and the receptacle substantially tangent to one of the surfaces so as to communicate with the groove when the drive lug is received in the receptacle while being retained in place by a pin receivable through the bore and the groove. Extension and adapter socket tools are disclosed.

Abstract: A keyless saw blade chuck has a generally cylindrical collar receiving the blade attachment end of a tool shaft, a clamping member and a mounting portion of a saw blade. The clamping member is located within the collar and urges a received saw blade against the tool shaft. A bore extends transversely through the collar and supports a slideable lock pin for holding the collar and the saw blade on the tool shaft.

Abstract: This device is of the type in which the tool is mounted so as to slide, with interposition of upper and lower guide means, in a front guide. According to the invention, at least one of the guide means delimits a guide zone, the directrix of which comprises points of inflection forming separation angles between facets, which zone cooperates with a zone of complementary cross-section made, at least locally, on the tool in order to rotationally lock this tool.

Abstract: A coupling structure includes a coupling member having a cylindrical, axially slotted end with a cylindrical opening extending therethrough and perpendicular thereto having an axis of generation parallel to the sides of the slot and including a conical surface, a conical member within the opening having a conical surface in contact with the opening's conical surface and threaded structure for axially adjustably securing the conical member in the opening. A tapered liner may surround the slotted end of the coupling member and a threaded insert may be provided over one end of the opening for receiving an end of the conical member. One embodiment includes one conical surface in the opening and one conical member provided within the opening. A second embodiment includes two separate conical surfaces in the opening along with two separate conical members in opposite ends of the opening connected by and axially adjustable along a liner member.

Abstract: A tool holder, particularly for longitudinally extending saw blade having a flat shaft, the tool holder has two walls defining a slot therebetween for insertion of a tool, a dowel arranged in one of the walls perpendicularly to the slot and engageable in a passage of a tool shaft and a spring-loaded clamping member to press the tool against one of the walls.

Abstract: The quick change insert system of the present invention utilizes a removable locking pin and an insert sleeve to permit easy replacement of an insert pin within a sleeve. Insert pin replacement occurs by removing the locking pin. After removing the locking pin, the insert sleeve is removed together with the insert pin. The insert pin is separated from the insert sleeve, and a replacement insert pin is put in its place. The new insert pin and the insert sleeve slide back into the sleeve, and the locking pin secures the insert pin and the insert sleeve to the sleeve. The present invention does not require the removing or re-adjusting of the sleeve during insert pin replacement. Furthermore, the present invention permits easy replacement of other sleeve assembly parts during part to part changeover and eliminates costly inventory of sleeve assemblies.

Abstract: An apparatus to selectively secure a drill chuck, wherein the drill bit is formed with a rear and forward hexagonal portion coaxially aligned with a circumferential groove positioned between the forward and rear sections, whereupon a hexagonal bore formed within an associated drill chuck receives the forward and rear sections. A lock pin is slidably mounted through the drill chuck orthogonally relative to an axis of the drill chuck and spaced above an axis of the drill chuck to permit engagement of the drill bit member within the drill chuck when a lock pin is in a forward position and disengagement of the groove of the drill bit in a lock pin is in a retracted second position.

Abstract: A working tool holder for a drilling or chiseling device includes a holder sleeve with an axially extending conically shaped section within a holder opening or bore. A working tool to be secured in the holder sleeve, has a tool shaft with a conically shaped section to engage the conically shaped section in the holder opening. Grooves are formed in the tool shaft to receive inwardly projecting ridges in the holder opening. The tool shaft has recesses to receive the pins mounted in the holder sleeve. The tool shaft and an actuating sleeve extending around the holder sleeve each have connecting threads for securing the working tool in the holder.