Abstract: A screwdriver includes a hollow cylindrical body with multiple elongated holes defined in an outer periphery of the hollow cylindrical body to communicate with inside of the hollow cylindrical body. Bit compartments are provided to be pivotally connected to the hollow cylindrical body and each bit compartment is provided with a hole adapted for receiving therein a bit. A lid is integrally formed with the bit compartment to cover a corresponding elongated hole. A controlling disk is rotatably connected to a side face of the hollow cylindrical body to control pivotal movement of the bit compartments so that rotation of the controlling disk is able to pivot the bit compartments relative to the hollow cylindrical body to reveal the bits received in the holes of the bit compartments.

Abstract: A tool includes a tool bit and a handle for releasable engagement with the tool bit. The tool bit includes an insert formed thereon. The handle includes a socket formed thereon. The socket includes a cavity defined therein for receiving the insert and at least one hole communicated with the cavity. The at least one hole includes an internal end and an external end larger than the internal end. The at least one annular groove defined in the insert is aligned with the at least one hole when the insert is inserted in the socket. At least one ball is received in the at least one hole. A sleeve includes an internal face and at least one cam surface formed on the internal face thereof. The sleeve is rotationally mounted on the socket between a first position and a second position. In the first position, the at least one cam surface allows complete removal of the at least one ball from the cavity. In the second position, the at least one cam surface pushes the at least one ball into the cavity.

Abstract: A tool includes a tool bit and a handle for releasable engagement with the tool bit. The tool bit includes an insert formed thereon. The handle includes a socket formed thereon. The socket includes a cavity defined therein for receiving the insert and at least one hole communicated with the cavity. The at least one hole includes an internal end and an external end larger than the internal end. The at least one annular groove defined in the insert is aligned with the at least one hole when the insert is inserted in the socket. At least one ball is received in the at least one hole. A sleeve includes an internal face and at least one cam surface formed on the internal face thereof. The sleeve is rotationally mounted on the socket between a first position and a second position. In the first position, the at least one cam surface allows complete removal of the at least one ball from the cavity. In the second position, the at least one cam surface pushes the at least one ball into the cavity.

Abstract: A connector (20) having an assembly (28) adapted to releasably receive an end (33) of a workpiece (22).

Abstract: A hand-held screwdriver assembly having interchangeable blades which are held within a hollow handle and are available to be selected and moved through a cross-slot in a cap assembly on the handle to a stop position, and then to be secured in a chuck for use. Rotation of the cap assembly is prevented when the blade is secured in the chuck, thus precluding the introduction of a second blade into the cross-slot.

Abstract: A resilient retainer ring comprises at least two pressing sections and at least one engaging section. Each pressing section presses against a bottom wall defining an annular groove in a receiving compartment of a screwdriver shank when the retainer ring is mounted in the annular groove of the screwdriver shank. The engaging section is exposed to at least one corner of the receiving compartment such that the engaging section has at least a portion engaged in a retaining groove of a bit when an end of the bit is received in the receiving compartment of the screwdriver shank.

Abstract: A tool retaining device includes a shank having two ends selectively engaged in a barrel and having tool members detachably secured to the ends for being selectively used to act onto the objects or to drive fasteners. The shank includes an end shaft having a socket opening for receiving a tool member, a bucket secured onto the shaft and having a bore for slidably receiving a casing. A magnetic member is engaged in the casing and includes an orifice for slidably receiving the tool member and for attracting and retaining the tool member to the shaft.

Abstract: A tool-combining rod includes a rod member, an engaging head member and an engage member. The rod member has a rear non-circular portion for combining with a driving tool, and a front combining hollow for combining with the engage head member and the engage member. The engage member has a center hole for the engage head member to fit through therein and an elastic annular wall to tightly fitting in the combining hole of the rod member. The engage member has a largest diameter smaller than or equal to the outer diameter of the rod member, and the outer diameter of the front combining hollow portion is smaller than or equal to that of the rear non-circular portion for convenience of combining with a screwdriver.

Abstract: A magnetic retaining device includes a barrel secured to one end of a flexible extension shaft or a driving shank, a pole slidably received in the barrel and having one end extendible outward of the barrel, a magnetic member secured to the outer end of the pole, and a retaining ring may be attached to the pole for limiting a movement of the pole relative to the barrel. The pole and the magnetic member may thus be moved relative to the barrel and may be moved inward and outward of the barrel, for attracting or driving the tool members in the deep grooves of the objects.

Abstract: A spoke wrench for a bicycle comprises a body, at least two driving members and a screwdriver bit. The body includes a driving seat having a slide way formed therein. A slot way is integrally formed on the body. The body has at least one depression for engaging with the driving member. A positioning portion which is integrally formed with the body has a receiving chamber, a opening is formed through the positioning portion for communicating with the receiving chamber, a steel ball is then retractably defined in the opening of the positioning portion. At least two driving members are detachably received in the slide way of the driving seat and the depressions of the body. A screwdriver bit is detachably received in the receiving chamber of the positioning portion of the body for engaging with a workpiece to tighten or loosen it.

Abstract: A screw holding and driving device (42) for a power drill (40) is characterized by a body (46), a guide tube (48) reciprocatingly retained by the body, a drive assembly (90) held by the body (46) and operatively coupled to the guide tube (48), and, in certain embodiments, a screw depth adjuster (102). The guide tube (48) is configured to allow individual, top loading of screws for driving. The depth adjuster (102) is rotatable on the body to variably set screw driving depth. The body (46) can also include an integrally formed, bit storage caddie (54).

Abstract: The present invention relates to a magnetic connecting tube for a screwdriver head with a main body, a push element, a spring element, a fastening ring, a block member and an engaging element. The main body having an engaging hole at one end thereof for receiving a hexagonal head which is secured by the engaging element in position. The main body includes under the engaging hole a through hole in which two permanent magnets are so arranged that the repulsive poles face to each other. When the hexagonal head is inserted into the engaging hole, it presses against the upper permanent magnet. In order to drive out the hexagonal head by means of the effect of the push element and the engaging element, the repulsive force between the permanent magnets is utilized to repel the hexagonal head out of the engaging hole. Meanwhile, the upper permanent magnet has the magnetic force to attract the hexagonal head such that the hexagonal head can be firmly attached and can't fall out of the engaging hole.

Abstract: An insulating hand tool has an elongated shank injection molded of a high-strength, electrically insulating material, such as glass-reinforced nylon, and a handle formed of an electrically insulating material. The handle and the shank may be molded together in a unitary, one-piece construction, or the handle end of the shank may be press-fitted in an axial bore in one end of the handle or the shank may be insert molded into the handle. The working end of the shank is adapted to carry a working tip or a socket, either of which may be insert molded in the working end of the shank or may be press-fitted in an axial bore therein. The socket may form a nut driver or define a receptacle to removably receive a working tip. The working tip may be a commercially-available, double-ended bit, with a Phillips tip at one end embedded in the shank.

Abstract: A 12-in-1 precision hand tool has five double-ended specifically sized precision tool bits stored in separate handle compartments adjacent the handle proximate end and one double-ended tool bit operably disposed at the distal end of a selectively retractably extendible shank for impeded access precision drive use. A handle cap is removably attached to the handle and has a rare earth permanent metal magnet disposed therein and operably disposed with respect to an axial opening in the cap to slidably receive and magnetically hold one selected double-headed tool bit. The removed handle cap provides a mini 12-in-1 precision drive tool. The handle has alternate flat and arcuate surfaces of about equal surface area and distally disposed contiguous tapered flat surfaces for ergonomic precision tool use.

Abstract: A tool bit holding device comprises an inner tube, an outer tube, and a clip. The inner tube includes an end and a compartment proximate the end. The inner tube includes an annular groove defined in an outer periphery thereof. A bottom wall defining the annular groove includes at least one slot to thereby communicate the annular groove with the compartment. The outer tube is mounted around the inner tube and slidable along a longitudinal direction of the inner tube. The clip is mounted in the annular groove of the inner tube, The clip includes at least one rectilinear section that is received in the slot and thus partially received in the compartment.

Abstract: A magnetic retaining device includes a barrel secured to one end of a flexible extension shaft or a driving shank, a pole slidably received in the barrel and having one end extendible outward of the barrel, a magnetic member secured to the outer end of the pole, and a retaining ring may be attached to the pole for limiting a movement of the pole relative to the barrel. The pole and the magnetic member may thus be moved relative to the barrel and may be moved inward and outward of the barrel, for attracting or driving the tool members in the deep grooves of the objects.

Abstract: A multi-functional hand tool assembly includes a handle with tool attachments. The handle has opposite ends with opposite holes extending therethrough. The tool attachments are removably, interchangeably and reversibly insertable into the handle ends and each has a middle section and end tool sections connected to and extending in opposite directions from opposite ends of the middle section. Each middle section is identical to one another and has a continuous exterior surface which matches a continuous interior end surface defining each hole in a handle end such that the middle sections can snugly fit through the hole in either handle end so as to mount the tool attachments in non-rotatable relationships with the handle ends such that the tool attachments will turn with turning of the handle.

Abstract: A ratchet tool includes a seat rotatably secured to a housing and having a number of teeth facing toward the housing, the housing having two channels for slidably receiving two pawls which are biased to engage with the teeth of the seat, and an actuator rotated by a control ferrule to selectively disengage the pawls from the teeth of the seat to control the rotational direction of the seat by the housing. A driving stem is engaged in the seat and has an engaging hole for changeably receiving a tool member. A rod may be biased to secure the tool member to the driving stem.

Abstract: A tool retaining device includes a shank having two ends selectively engaged in a barrel and having tool members detachably secured to the ends for being selectively used to act onto the objects or to drive fasteners. The shank includes an end shaft having a socket opening for receiving a tool member, a bucket secured onto the shaft and having a bore for slidably receiving a casing. A magnetic member is engaged in the casing and includes an orifice for slidably receiving the tool member and for attracting and retaining the tool member to the shaft.

Abstract: A tool bit holding device comprises an inner tube, an outer tube, and a clip. The inner tube includes an end having a compartment. The end of the inner tube includes an annular groove defined in an outer periphery thereof. A bottom wall defining the annular groove includes at least one slot to thereby communicate the annular groove with the compartment. The outer tube is mounted around the inner tube and slidable along a longitudinal direction of the inner tube. The clip is mounted in the annular groove of the inner tube. The clip includes at least one rectilinear section that is received in the slot and thus partially received in the compartment.

Abstract: A bit receiving device includes a shank having a first polygonal recess in for receiving a bit therein. A second polygonal recess is defined in a second end of the shank for receiving an extension rod therein. A chamber is longitudinally defined in the shank and a flange extends inward from an inner periphery of the chamber. The chamber has an inner diameter which is larger than an inner diameter defined by the flange. A rod is movably received in the first chamber and a magnetic member is connected to a first end of the rod. A second end of the rod is an enlarged end which is stopped by the flange when the rod is extended from the first polygonal recess.

Abstract: A resilient retainer ring comprises at least two pressing sections and at least one engaging section. Each pressing section presses against a bottom wall defining an annular groove in a receiving compartment of a screwdriver shank when the retainer ring is mounted in the annular groove of the screwdriver shank. The engaging section is exposed to at least one corner of the receiving compartment such that the engaging section has at least a portion engaged in a retaining groove of a bit when an end of the bit is received in the receiving compartment of the screwdriver shank.

Abstract: An apparatus is provided that allows the use of a standard ratchet wrench on the “L” shaped Allen wrenches. With a square drive on one end, the end which normally goes over a bolt or nut has a slotted design which fits over the “L” shaped end of an Allen wrench. The invention then provides increased leverage and control to remove or tighten stubborn Allen bolts and also protects the user's hands from sudden slippage and associated rapped knuckles.

Abstract: The composite battery-integrated tattooing machine totally avoids a clip cord and the drag associated with it. The new machine comprises a base frame for removably holding a needle bar housing assembly, a tattoo needle assembly removably mounted to reciprocate within the needle bar housing, a reciprocating motion generator having at least one electromagnet and a make and break mechanism for effecting reciprocating motion of the tattoo needle assembly, a battery, a rheostat, and a switch for actuation of the reciprocating motion of the tattoo needle assembly. An important switch arrangement is radio operated; other switches are hand operated. Special subassemblies are provided for conversion of known professional tattooing machines into the new type having battery power integrated with the tattooing machine. Experts can now tattoo without the annoying drag of a clip cord.

Abstract: A holder for holding a tool bit having an elongated connector means with a first end and a second end. The elongated connector means has a central longitudinal hole, of a cross-section corresponding to the cross-section of a mounting portion of the tool bit, at the first end, and a tool mount at the second end, and where the elongated connector means has a first circumferential groove adjacent the second end and a second circumferential groove adjacent the first end. A first sleeve is arranged to reciprocally slide over the connector between a first end position and a second end position, where the first sleeve has a third end facing the tool bit and a fourth end facing the hand tool.

Abstract: A multiple screwdriver includes a tubular body having, at one end, a tip and, at the other end, a cap. The tubular body has an axially extending bore, a first cylinder end in a zone of the tip and a second cylindrical end in a zone of the cap. Between the end of the first cylindrical end and a rim with a hexagonal opening provided at an exit of the tip, a C-shape springy element is located. The internal circumference of the latter circumscribes the hexagonal opening, so that a shank of an interchangeable screwdriver tip can be prevented from falling out. After several interchangeable screwdriver tips are inserted successively through the top of the cap into the axially extending bore and the first interchangeable screwdriver tip has its bit projecting out of the tip, the last interchangeable screwdriver tip is so situated that its top is beneath a hexagonal configuration provided at the top of the switch.

Abstract: Disclosed is an innovated structure for hand tools comprising a tool accommodation apparatus and a lighting equipment for supplementary lighting or an emergency lighting source. The tool accommodation apparatus further includes a took set installed therearound consisting several kinds of hand tool. The structure is characterized in that when the tools are to be used, a selected tool is pushed forwardly and upwardly from its fixed position to the top end of the tool accommodation apparatus ready for use.

Abstract: An ink application device for tattooing or for making permanent make-up includes a handle, a needle drive, a needle, a needle nozzle and a protective cap. The device further includes at least two modules releasably connected to one another. One of the modules is formed as a reusable base module with an integrated needle drive, and the other module is a sterilized disposable module in which all components of the manual device capable of being infected by bodily fluids of a customer are integrated. The device can be constructively divided into two or three separate modules: a basic module, a disposable or hygienic module and an optional ink module. The basic module corresponds to the handle that includes the needle drive and is designed such that the hygienic module can be safely attached and connected to the integrated needle drive.

Abstract: An assembling screwdriver with hexagonal socket is composed of a handle, a socket and a set of bits, the handle has a hexagonal socket holder with a pair of inner rails along the inner wall. The socket is in hexagonal inner shape, and has an outer diameter slightly smaller than the inner diameter of the socket holder of the handle, and comprises a pair of protuberances extending from the outer wall corresponding to the rails of the socket, an aperture on the wall between the protuberances, a block secured in the socket with a recess adapted to receive a spring and a bearing therein. The bit set includes a pair of bits, each bit is in hexagonal shape and has an aperture on one side adapted to receive a spring and a bearing therein. The two bits are placed in each end of the socket, while the socket is inserted in the socket holder of the handle with the bearing urged by the spring against the wall.

Abstract: An apparatus for telescopically extending the shaft length of a tool including a handle with a circular or noncircular hollow core shaft with at least one longitudinal extension channel, a circular or noncircular hollow shank wherein one end has an internally threaded drive ring with at least one tab for insertion into an extension channel, and the second end has a head assembly to receive various tool fittings where an externally threaded adjusting rod extends into the hollow shank and is engaged in the threaded drive ring and is operated by a rotatable adjusting knob is attached to the adjusting rod, and a lock assembly is used to selectively eliminate rotation of the knob; the lock assembly comprises a pair of facing spline faces which engagingly prevent rotation of the knob.

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 screwdriver comprises a handle, a shank, a chuck rod, a first blade, and a second blade. The chuck rod is provided with two chuck slots opposite in location to each other and different in specification from each other. The first blade and the second blade are provided with the phillips tips of various specifications, and the cabinet or keystone tips of various specifications. The first blade and the second blade are held interchangeably by the chuck rod. The two longitudinal ends of the chuck rod are interchangeably engageable with one end of the shank.

Abstract: A knockdown hand tool structure. The structure includes a grip, a screwdriver stem, a fitting post and a socket. A front end of an elongated stem of the grip is formed with a central hexagonal fitting hole with a certain depth. A stop sleeve is fitted on the front end of the elongated stem. A steel ball and a compression spring are received in the stop sleeve. The screwdriver stem is a hexagonal stem body. Two ends of the screwdriver stem are respectively equipped with different specifications or patterns of screwdriver heads. Certain portions of the body of the screwdriver stem are formed with annular engaging grooves with V-shaped cross-section and a certain depth at equal intervals. The fitting post is a short cylindrical body.

Abstract: A rotary tool (10) is provided having a tool holder (16) including a socket (22) adapted to receive a reversible bit assembly (18). The bit assembly (18) having a storage cavity (44, 46) extending in each end. Each storage cavity (44, 46) adapted to receive a bit driver (54, 56) having a driver configuration (58, 60) formed on each end. Each driver configuration (58, 60), as well as the storage cavity (44, 46) and the socket (22) adapted to function as a drive member.

Abstract: A two-ended screwdriver bit sized and configured to fit and lock in chucks that accept bits complying with American National Standards Institute specification ANSI B107.4-1982 for ¼ inch hexagonal bits. The two-ended bit has a hexagonal shank with two circumferentially-extending grooves in the screwdriver tip at each end of the shank. The length from the midpoint of each groove to the end of its adjacent screwdriver is ⅜ inches, permitting either end of the bit to be seated in a standard chuck.

Abstract: An ink application device for tattooing or for making permanent make-up includes a handle, a needle drive, a needle, a needle nozzle and a protective cap. The device further includes at least two modules releasably connected to one another. One of the modules is formed as a reusable base module with an integrated needle drive, and the other module is a sterilized disposable module in which all components of the manual device capable of being infected by bodily fluids of a customer are integrated. The device can be constructively divided into two or three separate modules: a basic module, a disposable or hygienic module and an optional ink module. The basic module corresponds to the handle that includes the needle drive and is designed such that the hygienic module can be safely attached and connected to the integrated needle drive.

Abstract: A tourque transmitting tool set has a set of drivers having similarly sized male member portions and differently sized driver portions, and a single female member with a hole sized to receive each respective male member portion and a torque wrench receiving exterior where with a driver received in the female member a plane bisects the female member wrench receiving exterior and the male member portion so that each respective driver with the female member transmits torque in a limited access space.

Abstract: A driver is provided with storage for interchangeable bits in the handle portion. The handle portion comprises a generally cylindrical driver body, that is aligned along a common longitudinal axis with the shaft. Evenly spaced and outwardly opened grooves span longitudinally along the body for providing channel access to bits, such that one bit is stored in each groove. A bit cap is positioned over the heel end of the driver body and extends at least partially along the length of the driver body to form bit storage chambers. Through apertures in the closed end of the bit cap are spaced to align with the corresponding grooves in the handle body, for inserting and removing bits. A bit gate consisting of a circular disk having a single gate aperture is positioned between the heel of the driver body and the bit cap for selection of a desired bit. A bit selector knob extends longitudinally outward from the bit gate, through the back portion of the bit cap.

Abstract: A dimpler tool comprises a handle member having a side wall, a closed bottom, and an open top defining an interior space. The dimpler tool further includes a lid threadably coupled to the handle member so as to removably cover the open top. A first portion of a shaft is embedded in the closed bottom of the handle member and a second portion of the shaft projects from the bottom and is normal thereto. A dimpler attachment is removably coupled to the second portion of the shaft and includes a tip that tapers to a point. The tip may be inserted into a hole left in a wall as a result of removal of a fastener, the hole being smoothed over by a rotational pressure applied to the dimpler tool by a user. The dimpler attachment is interchangeable with attachments having variously sized tips or with auxiliary attachments having variously configured screwdriver tips.

Abstract: A device for fixing and removing stud seats for boots. The seats are designed to be fitted from above the boot sole and receive the studs screwed from underneath the sole. The device includes a first portion forming a handle having a means for fixing the seats on a first surface and a second portion forming a handle having means for removing the seats from a first surface, the first surface of the first portion capable of being fitted into a second surface of the second portion, and the first surface of the second portion capable of being fitted into a second surface of the first portion.

Abstract: An insulating ratcheting screwdriver includes an elongated composite shank formed of electrically insulating material and provided with a bit holder at a working end thereof. The other end of the shank has an axial recess in which is disposed one end of a hexagonal connecting pin, the other end of which is press-fitted in an axial bore in one end of a metal coupler for joining the coupler to the shank. The metal coupler is removably received in a receptacle formed in a ratchet mechanism disposed in one end of an elongated, electrically insulating handle.

Abstract: A screwdriver having a handle and a tip detachably fastened to the handle. The handle has a control portion provided with a receiving hole in which the tip is releaseably retained by two retaining members in conjunction with a position confining block. A cover is fitted onto the end of the handle such that the tip extends through a through hole formed at a closed end of the cover. The position confining block extends partially outwardly through a through hole formed in a side wall of the cover.

Abstract: A screwdriver wherein the handle has a front and a rear handle section which are mated with one another. A shaft extends axially from the front end of the front handle section. The rear handle section is removably connected to the front handle section. The rear handle section has a shaft extending axially from a front end thereof and located in a central inner bore of the front handle section when the rear handle section is mated with the front handle section. The rear handle section constitutes a stub screwdriver. A screwdriver bit retention magazine is formed in the rear circumferential wall end of the front handle section and has a plurality of cavities having at least a wall portion thereof comprised of a thermoplastic elastomer to provide frictional retention of the bits.

Abstract: A tool handle permits selective adjustment of a permitted depth of insertion of a blade therein. The tool handle includes a central bore for reception of a blade through a front opening thereof, and an adjustable stop receivable in the bore, the position of which can be selectively fixed along a longitudinal central axis of the tool handle. So positioned, the stop blocks insertion of the blade beyond a fixed point along the bore selected by the user. As the blade is worn and reground, the stop is moved to a position closer to the front opening of the bore, shortening the degree of blade insertion permitted, and thus allowing a constant distance of blade extension to be maintained. Once adjusted, the blade is securable to the handle, to prevent undesirable movement during use of the assembled tool.

Abstract: A holder for holding a tool, having an elongated housing, including a longitudinal hole having a cross-section corresponding to the cross-section of a mounting portion of the tool bit. The housing further has at least one radial hole running from an outside surface of the connector to the longitudinal hole. The radial hole contains a substantially spherical locking means movably arranged in the radial hole. The means cooperates with a circumferential groove in the tool bit to lock the tool bit in place when the tool bit is fully inserted into the holder. A sleeve is arranged to reciprocally slide over the first connector between two end positions. The sleeve is biased towards the tool by a first biasing means, and the sleeve has a step arranged on the inside of the sleeve, which step blocks the locking means when a tool is fully inserted into the longitudinal hole. A plunger is arranged to reciprocally slide inside the longitudinal hole, being pressed by a second biasing means towards the tool.

Abstract: The elongate rod shaped non-impact and non percussion drilling tool comprises: a non-impact and non-percussion drilling tool or implement formation at an outer end of the shank, a portion of the shank having a polygonal cross section at a location on the shank other than at an inner end of the shank, an annular groove in the shank which is only wide enough to receive a detent to prevent axial movement of the tool when it is received in a snap-in chuck assembly and a spline formation at an inner end of the shank. The chuck assembly includes either a polygonal drive structure in a center bore of the chuck assembly or a rotatable nose collar or an axially movable nose collar whereby a tool received in the center bore is held by friction in the polygonal drive structure or by a rotatable movement or an axial movement of the nose collar.

Abstract: The tool drive system for use with a chuck having a throughbore including an outer bore portion for receiving a tool or tool holder and an inner bore portion constructed to receive and be mounted on an outer end of a motor shaft of a power tool comprises: an insert received in the inner bore portion; structure for preventing rotation of the insert relative to the chuck; structure on the insert for engaging an inner end of a tool or tool holder; and a mechanism for holding the tool or tool holder against axial movement relative to the insert.

Abstract: Disclosed is a low profile air ratchet wrench with an improved rotor geometry for use in accepting a variety of stem sizes and shapes. Also disclosed are improved stem constructions. The stem constructions employ offset spring biased balls which allow for a better securement between the stem and rotor wall.

Abstract: Components of a an assembly of operatively related devices for installing a flange cover for a gas valve include a bit especially useful for engaging a corresponding access hole or opening in the face plate portion of a flange cover for transmitting torque thereto for coupling it with a matingly threaded gas valve. The bit end of the bit may have a hole extending axially therethrough and is preferably successively smaller as the end is approached. In one embodiment the bit includes a drive end of a shape differing from the bit end so that a shoulder is formed separating the two ends and providing a stop to prevent the bit from sliding into the hole in which it is engaged. In another embodiment, the drive end is circular with a square recess to accept a drive lug of an appropriate driving tool.

Abstract: A nut holding device is mounted in a socket of the type including a compartment defined by a polygonal inner periphery. The nut holding device includes a body mounted in the compartment, elastic plates formed on an upper side of the body for holding a nut to be loosened, a positioning arrangement formed on the body to position the body in the compartment, and resilient plates for biasing the nut to a level partially beyond the ratcheting tool. The positioning arrangement includes a number of legs extended downward from an underside of the body. Each leg includes a column section that engages with an associated angular section of the polygonal inner periphery of the ratcheting tool when the nut holding device is received in the compartment of the ratcheting tool.