Abstract: A chuck assembly for a rotary power tool includes a chuck body rotatable about a central axis. The chuck body has a plurality of slots, each oriented at an oblique angle relative to the central axis. The chuck assembly also includes a plurality of jaws, each movable along a respective one of the slots. The chuck assembly also includes a collar coupled to the plurality of jaws. The collar is selectively engageable with the chuck body such that, when engaged, the plurality of jaws are movable along the plurality of slots in response to rotation of the collar.

Abstract: A chuck includes a chuck body extending along a longitudinal axis, the chuck body including a plurality of slots each arranged at an oblique angle with respect to the longitudinal axis. A plurality of jaws each includes a first engagement portion, a jaw end, and a drive end. Each of the jaws is disposed within one of the plurality of slots and is movable between a close position and an open position. A biasing member is coupled to the plurality of jaws and is operable to bias the plurality of jaws toward the close position and a rotating assembly is selectively engageable with the plurality of jaws such that when engaged, the plurality of jaws are movable in response to rotation of the rotating assembly.

Abstract: A drill chuck including a spindle portion with a pusher bore, a spindle bore, an annular array of teeth, and an annular groove defined by the outer surface of the first end. A body is rotatably disposed about the spindle portion and includes a central bore, an annular groove defined by the central bore, and a pawl pivotably mounted to the body for selectively engaging the annular array of teeth. A jaw pusher includes a threaded post and a head, the threaded post being disposed in the pusher bore and configured for axial motion. A jaw guide is disposed on the first end of the body and includes a plurality of jaw slots. A plurality of jaws is slidably received in the corresponding jaw slots and slidably received by the head of the jaw pusher. A plurality of bearing balls is received between the annular groove of the spindle portion and the annular groove of the body.

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

Abstract: A drill chuck has a chuck body having a forwardly open large-diameter threaded bore centered on an axis and a rearwardly open bore also centered on the axis and of small diameter. A power-unit spindle end is threaded into the small-diameter bore and projects axially forward into the large-diameter bore. A sleeve assembly axially fixed but rotatable on the chuck body is formed centered on the axis with a plurality of axially extending, angularly spaced, and forwardly open angled guides slidably receiving jaws. A coupling body has a large-diameter rear end threaded into the forwardly open large-diameter bore of the chuck body and a front end fitted to and angularly coupled to the jaws so that rotation of the sleeve assembly, jaws, and coupling body relative to the chuck body axially shifts the jaws.

Abstract: An adjustable socket having a housing with a longitudinal axis. A collar is couplable to and movable along the housing. The collar's lower end is bevelled. A plurality of circumferentially spaced apertures extend through the housing. A jaw is mounted in each aperture for slidable, radial movement through the aperture. Each jaw has a flat inward face and a bevelled outward face. The jaws are biased radially outwardly away from the axis. Rotation of the collar around the housing in a first direction forces the collar's bevelled end against the jaws' bevelled faces, forcing the jaws radially inwardly and forcing their inward faces against a fastener located between the inward faces. Rotation of the collar in the opposite direction allows the jaws to be biased radially outwardly to release the fastener.

Abstract: Apparatus for manipulating an article, such as a cutting tool. A moveable jaw member includes first and second inclined surfaces, with the second inclined surface being substantially parallel to the first inclined surface and non-parallel to a central axis. A support structure provides stationary first and second guide surfaces along which the respective first and second inclined surfaces contactingly move. This maintains the jaw member in a selected angular alignment with the central axis as the jaw member advances in a direction orthogonal to the central axis to engage a side of the article. A second jaw member is preferably provided so that the article is clamped between the first and second jaw members. A spring preferably biases the jaw members apart and resists inward movement thereof. A base surface advances along the central axis to contactingly advance and retract the jaw member(s).

Abstract: A drill chuck has a chuck body centered on and axis, and a tightening element surrounding the body and rotatable thereon about the axis. The tightening element has a front sleeve formed with jaw-holding guides and a rear sleeve releasably coupled with the front sleeve. A retaining ring bears axially forward on the sleeve. Releasable locking formations on the ring and body are relatively displaceable between a retaining position preventing axial rearward shifting of the ring and sleeve on the body and a freeing position permitting such shifting. A pusher rotationally coupled to the jaws bears axially forward on the jaws. Interengaging screwthreads on the pusher and chuck body are provided so that relative rotation of the sleeve together with the jaws and pusher relative to the chuck body axially displaces the jaws between their positions.

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 for holding a small bit and used with a table drill is provided for drilling a millipore. The chuck includes a holding jaw having four holders; a jaw-positioning guiding body with a square hole at the front portion for positioning the holding jaw; a crossing linkage for connecting the body to the jaw and having a crossing head and a projection portion between which a groove is formed; a guiding jacket matched with the crossing linkage and the body; a positioning screw nut matched with the jaw-position guiding body; a screw collar matched with the crossing linkage; and a bevel gear housing housed around the screw collar for adjusting the position of the holding jaw.

Abstract: As part of a method of producing a customized chart for use with chart recorder apparatus, a user desiring the customized chart is provided with a list of questions including, for example, the size of the chart; the graduations of the chart with respect to a first chart dimension; and the graduations of the chart with respect to a second chart dimension. The questions are input to a software applications program operative to generate a datafile containing a graphical representation of the desired chart based upon the answers received. The datafile is delivered to a printing facility, where the chart is physically produced in accordance with the data file, then delivered to the user. One or more of the steps associated with the method may be carried out over a remote communications link such as a telephone to enhance convenience. For example, the step of inputting the answers may take place over a communications link from a remote location using phone lines and voice, modem or Internet protocols.

Abstract: A drill has a chuck with a body member and a bore to receive a cutting tool. A plurality of jaw members are coupled with the body to retain the cutting tool in the bore. A mechanism to secure the cutting tool in the jaws is coupled with the body. The mechanism applies a biasing force on the jaw members which enables the jaw members to slide on the body between a locked position securing the cutting tool in the jaw members and an unlocked position which enables egress and ingress of the cutting tool into and out of the jaw members.

Abstract: A chuck assembly for a tool bit includes a hollow chuck body which has a front end formed with a locking portion and which is formed with at least one radial opening therethrough, a cylindrical push member which is disposed slidably in the chuck body and which is formed with an external screw thread, a hollow truncated cone-shaped seater which is disposed in front of the push member and which is formed with a plurality of angularly spaced and longitudinally extending slits, a plurality of elongated clamping members which extend slidably and respectively into the slits and which have rear ends connected to the push member, a hollow truncated cone-shaped front cap which encloses the seater and which has a rear end connected to the locking portion of the chuck body, and a drive ring which is provided rotatably around the chuck body and which is formed with an internal screw thread that meshes with the external screw thread of the push member.

Abstract: An adjustable gripping device (10) in the nature of an adjustable socket including a body (11) supporting a stem (14) having arcuate guide surfaces (16) along which gripping jaws (19) slide. The gripping jaws (19) include teeth (23) on their outer surfaces and a rotatable adjuster (24) is provided with an internal thread (27) for cooperation with the teeth (23) such that when the adjuster (24) is rotated in opposite directions, the jaws (19) move inwardly and outwardly.

Abstract: A chuck assembly includes a hollow chuck body assembly, a jaw unit provided at a lower end of the chuck body assembly, and a rotary shaft disposed in the chuck body assembly and coupled with the jaw unit. The chuck body assembly has a top surface formed with first annularly arranged ratchet teeth. The rotary shaft has an upper end portion extending outwardly from an upper end of the chuck body assembly. A sleeve member is sleeved on the chuck body assembly. A rotary ring is sleeved on the upper end portion of the rotary shaft and has a bottom surface formed with second annularly arranged ratchet teeth which engage normally the first ratchet teeth so as to restrict undesired rotation of the rotary shaft in the counterclockwise direction. A rotary knob is sleeved on the sleeve member and is coupled with the upper end portion of the rotary shaft.

Abstract: A keyless chuck for a rotary tool comprises a chuck body which is adapted to be coupled at its one end to a drive spindle of a drive source and coupled at the other end to a tool bit for establishing a driving connection from the drive source to the tool bit. Relatively rotatable to the chuck body is a sleeve ring which is operatively connected to a set of gripping jaws for tightening the gripping jaws on the tool bit upon being rotated in one direction and loosening the same upon being rotated in the opposite direction. A one-way clutch is provided to rotatively fix the sleeve ring to the chuck body when the chuck body is driven to rotate in the direction of turning the tool bit reversely.

Abstract: A jaw assembly for apparatus for gripping pipes, the apparatus being of the type having automatic means for exerting increased gripping force upon application thereto, is provided with a member having a concave surface which cooperates with a gripped pipe to override the automatic means for exerting increased gripping force. Having such a member, the jaw assembly of the present invention can exert a predetermined maximum gripping force on a gripped pipe notwithstanding amount of torque applied to the apparatus. Considering angular relationships involving jaw cam angle, the present invention can be manifested in an increasing cam angle jaw for power tongs.

Abstract: To provide for an axially short self-tightening chuck, a spiral spring (22) is located inside the chuck to couple together a cylindrical surface (24) formed on the chuck spindle, for example on an extending flange (17) thereof and a cylindrical surface (25) on an axial extension (16) of a holding sleeve which retains the chucking mechanism, including clamping jaws (9) and the like. An operating ring (23) is engageable with an end portion of the spring. The spring has a direction of winding which, with a given direction of rotation of the tool, tightens the spring about the axially adjacent surfaces (24, 25) on the chuck body and the holding sleeve, so that they will rotate together, and, even under conditions of vibrations or sudden stopping, not loosen, since relative reverse rotation is inhibited by frictional engagement of the spiral spring between the parts.

Abstract: An adjustable socket having a driver rotatably drivable about a central axis, wherein the driver includes inclined slideways extending with both radial and axial components with respect to the central axis. Jaws are supported within corresponding slideways of the driver for movement with respect to the central axis. The jaws each include an internal driver aperture having an axis transverse to the central axis. An adjuster provided with the socket includes a jaw operating member, jaw clips and a connection that secures the jaws, jaw operating member and jaw clips, to maintain the socket in the assembled condition and to limit inward movement of the jaws. The jaw operating member includes an annular flange projecting outwardly in a radial direction with respect to the central axis to axially locate the jaw clips.

Abstract: A drilling device includes a drill chuck which is provided with at least two adjustable clamping jaws slightly rotatably guided in the drill chuck and including a guide surface for a tool shank of a tool. The guide surface is provided with at least one projection extending in direction of the chuck axis and engaging into a recess of the tool shank for rotating and axially limiting the play of the tool. The projection of each jaw is arranged circumferentially rearwardly offset to the mid-plane of each clamping jaw so that the guide surface is defined by a leading part which is wider than a trailing part in circumferential direction of the tool shank.

Abstract: A keyless chuck for a rotary tool comprises a chuck body which is adapted to be coupled at its one end to a drive spindle of a drive source and coupled at the other end to a tool bit for establishing a driving connection from the drive source to the tool bit. Relatively rotatable to the chuck body is a handle ring which is operatively connected to a set of gripping jaws for tightening the gripping jaws on the tool bit upon being rotated in one direction and loosening the same upon being rotated in the opposite direction. The handle ring is disposed on the chuck body in such a manner as to coincide the rotating direction of the handle ring for tightening the gripping jaws with the reverse rotating direction of the chuck body for removing the tool bit from a workpiece.

Abstract: In a drill chuck for securing the shank of a tool in a hand-held device, clamping jaws are mounted in a chuck member and bear radially outwardly against the conically shaped surface in a first sleeve into which the tool shank is inserted. A second sleeve is connected to the first sleeve and is threaded engagement with the chuck member. A locking or third sleeve is located about the first and second sleeves. The third sleeve is axially displaceable between a first position and a second position. In the first position the third sleeve engages the first and second sleeves so that the second sleeve cannot be rotated relative to the first sleeve or the chuck member and the tool shank can be locked by the clamping jaws. When the third sleeve is displaced into the second position, the second sleeve is released and can be rotated relative to the chuck member for axially displacing the first sleeve relative to the chuck member and adjusting the radial position of the clamping jaws.

Abstract: A clamping chuck for securing a tool in a drilling device can be used for transmitting rotary and/or percussion motion to the tool. Independently adjustable guide jaws and at least one engaging element are mounted in the chuck. The guide jaws can hold a tool shank in a frictional engagement while the engaging element can fit into a recess in the surface of the tool shank. With such separate adjustment, the guide jaws can be used alone or in combination with the engaging element for holding the tool shank.

Abstract: An adjustable socket (10) is disclosed as including a driver (16) having inclined slideways (18) on which jaws (20) are mounted for inward and outward adjusting movement by an adjuster (24) supported on the driver and having an annular flange (26) that projects into jaw slots (22). The adjuster (24) preferably has a two piece construction including a jaw operating member (32) on which the annular flange (26) is provided, a rotatable adjusting member (34) supported on the driver for rotational adjustment, and a press fit connection (36) that secures the jaw operating member (32) to the adjusting member (34) upon assembly. A shoulder (44) on one of the members (32, 34), preferably on the adjusting member (34), axially engages the other member to prevent movement therebetween as the adjustable socket is loaded. The jaw slots (22) and the annular flange (26) preferably extend radially without any axial component to prevent binding during adjustment and use.

Abstract: Attachments for self-locking or conventional key-operated chucks on hand drills make possible simplified operation thereof. An externally threaded ring carried by the drill surrounding the chuck is internally beveled at its outer end and mates with a threaded nut. A split ring with wedge-shaped cross section is positioned between the nut and the beveled end of the ring so as to clamp the chuck to the ring when the nut is tightened. A cap made of an elastomer attached over the nose of the chuck has in its end a slot or crossed slots which grip a drill bit when it is thrust therethrough.

Abstract: A drill chuck for a hand-held drilling device, such as a hammer drill, percussion drill or the like, includes a chuck body mounting a plurality of clamping jaws. An adjusting sleeve is rotatably mounted on the chuck body for positioning a partly frusto-conically shaped bracing sleeve for radially positioning the clamping jaws to secure or release a tool shank. The adjusting sleeve includes gear teeth which can be engaged by a ring gear key for rotating the adjusting sleeve relative to the chuck body. A locking sleeve is axially displaceably mounted on the adjusting sleeve. In a first position, the locking sleeve blocks engagement of the key with the ring gear teeth. In a second position, the locking sleeve is moved affording access by the key to the ring gear teeth so that the adjusting sleeve can be rotated and the clamping jaws radially positioned by the bracing sleeve.

Abstract: An improved quick action keyless drill chuck having a single one-piece outer body which encloses all the other components within its interior, a thrust screw in the form of a hollow cylindrical body divided by a division wall into two cavities, a central body with a central longitudinal bore in two sections screwcut such that the rear section accepts the correspondingly threaded spindle of the drilling machine and the front section, of which the diameter is greater than that of the rear section, accepts the screwthread of the thrust screw, this same central body being provided also with two salient cylinder forms on its outer face which fit precisely into the interior of the single outer body; the drill chuck also having the optional complementary device for operation in percussion with a hammer drill consisting of a helicoidal spring which exerts a continuous pressure on the thrust screw, the force being applied against the division wall.

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: An adjustable socket wrench having a socket head at one end with a recess adapted to receive a socket handle at the other end. The socket head is formed with a plurality of arcuately spaced openings which extend entirely through said socket head, and a plurality of gripping jaws fit relatively closely within and extend through the openings. Means are provided to operatively connect the wrench housing and the jaws for moving the jaws either toward or away from each other thereby to accommodate and tightly engage varying size objects to be rotated by the wrench.

Abstract: A bi-directional, self-tightening chuck for releasably gripping a tool bit such as a twist drill or the like includes a bit receiving nosepiece having a conical, internal opening formed therein. A control sleeve is rotatably mounted, through a thrust bearing, on the nosepiece and is adjustably connected to a chuck body to enable adjustment of the axial position of the nosepiece relative to the chuck body. Tapered gripping elements, which may take the form of cone-like gripping rollers or wedge-like jaws, are located in the internal opening of the nosepiece and are adapted to forcibly grip the stem portion of the tool bit in response to a hand-tightening adjustment of the control sleeve on the chuck body and further adapted to self-tighten in response to an axially directed thrust force applied to the gripping elements by a torque-responsive cam assembly.

Abstract: A chuck has a chuck body formed centered on the chuck axis with an annular array of outwardly directed teeth. A plurality of generally angularly equispaced and radially displaceable jaws on the body can be displaced toward and away from each other by means of a tightening sleeve which is rotatable on the chuck body about the chuck axis. A ratchet pawl is pivoted on this sleeve and has an end engageable with the teeth in a direction so as only to allow rotation of the sleeve and chuck relative to each other in a direction moving the jaws toward each other. A spring is braced between this pawl and the sleeve and urges the sleeve into radial engagement with the teeth. A release ring can be rotated relative to the chuck body between a holding position which allows the spring to press the end of the pawl against the teeth and a releasing position which holds the end of the pawl out of engagement with these teeth.

Abstract: A bi-directional, self-tightening drill chuck suited for surgical and other medical applications in accordance with the present invention includes a chuck body having an internally tapered opening at one end that is defined by first and second cam surfaces and a central, longitudinally extending cannula or passage formed through the length of the chuck body. A plurality of tapered gripping rollers are located within the opening and are resiliently urged against the cam surfaces throughout a range of adjustment by a spring retainer which includes rearwardly extending spring arms.

Abstract: A tool chuck, especially for holding tool bits, for example twist drills, and for use with a machine tool, in particular a portable electric drill. The chuck is so constructed as to permit secure holding of the tool bit even when used in percussion drills or impact hammer drills, while at the same time providing protection for the elastic internal element which provides axial movement. The tool chuck has a core or mandrel surrounded by a hollow conical collar which includes at least two chuck jaws and the elastic member is located between the core and the collar to apply an axial force between these two parts when the chuck is closed on a tool bit while being protected against direct exposure to the impacts sustained by the chuck jaws.

Abstract: A keyless chuck for attaching a drill bit to the rotary shaft of a drill. A sun gear is fixed to the rotary shaft and coacts with a set of planetary gears to rotate a body member having a plurality of threaded jaw members movably attached thereto. A screw ring member coacts with the jaw members to selectively cause the jaw member to open and close when the jaw members rotate relative to the screw ring member. A ring gear member is attached to the screw ring member and coacts with the planetary gears to allow the screw ring member to normally rotate with the jaw members unless substantial resistance is applied to the ring gear member to hinder its rotation.

Abstract: A keyless chuck adapted to grip an object, such as a drill bit, is disclosed. The keyless chuck includes a cylindrical body provided with an axially extending tapered bore. The surface of the tapered bore includes first and second cam surfaces. A control sleeve is provided surrounding at least a portion of the cylindrical body and is adapted for controlled axial movement relative to the cylindrical body. A retaining element is attached to the control sleeve and partially closes one end of the cylindrical body. A thrust bearing is provided in the retaining element. Gripping elements are positioned within the tapered bore and are adapted to engage and grip the tool when the tool is inserted between the gripping elements. A thrust bearing is positioned in the retaining element which operatively engages the gripping elements.

Abstract: A chuck has a chuck body defining a chuck axis and carrying three angularly equispaced and radially displaceable jaws. A tightening sleeve is rotatable on this chuck body about the axis thereof and is connected via formations to the jaw and chuck body so that when it is rotated in one rotational sense it displaces the jaws radially inwardly and when rotated in the opposite rotational sense it allows outward displacement of these jaws. An axially centered array of ratchet teeth is formed on the sleeve and a ratchet is pivoted on the chuck body and has an end engageable with the ratchet teeth so that when engaged the sleeve can only rotate in the one rotational sense for tightening of the jaws relative to the chuck body. A radially outwardly displaceable counterweight is carried on this ratchet to urge it into engagement with the teeth when the chuck is rotated, but the ratchet can be manually moved out of engagement with the teeth to allow manual loosening of the chuck.

Abstract: A chuck for drills and the like including at least three jaw elements of tapered form connected to a jaw carrier by means of flexible elements. Means are provided for urging the jaw elements axially relative to a nose cone so that they act against a frusto-conical bore portion of said nose cone and are urged radially inwards, accompanied by flexing of the flexible elements, to grip the shank of a drill or the like.

Abstract: A chuck for drills and the like including at least three jaw elements of tapered form connected to a jaw carrier by means of flexible elements. Means are provided for urging the jaw elements axially relative to a nose cone so that they act against a frusto-conical bore portion of said nose cone and are urged radially inwards, accompanied by flexing of the flexible elements, to grip the shank of a drill or the like.

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.