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: The invention relates to a drill chuck having a chuck body (1) which can be connected to a drill spindle and in which clamping jaws (3) are arranged which engage in the thread of a rotatably embodied ring nut (6). The invention also relates to a blocking device for the ring nut (6) consisting of a coaxial crown of blocking recesses (9) and at least one blocking element (10) which, in the blocking position, is engaged in the blocking recesses (9) under the force of a locking spring. The drill chuck also comprises a coaxial adjusting ring (15) which can be rotated in a defined manner relative to the ring nut (6) between first abutments (16), and a catch device (17) forming two catch positions (18) for the adjusting ring (15) in the peripheral direction.

Abstract: A chuck has a drive shaft, a generally rotatable housing part adjacent the drive shaft, and a chuck body fixed to and rotatable with the shaft and formed with a plurality of guides holding respective jaws shiftable between closely spaced inner positions and widely spaced outer positions. An adjustment sleeve surrounding the body and coupled to the jaws can rotate relative to the body to shift the jaws between their positions. A latch has interengaging formations on the housing part and on the adjustment sleeve manually shiftable between a coupled position for rotationally locking the adjustment sleeve to the housing part and a decoupled position for rotation of the adjustment sleeve relative to the housing part. A torque coupler connected to the latch decouples the latch from the housing when, in the coupled position, a torque exerted between the housing and the chuck body exceeds a predetermined limit.

Abstract: The invention relates to a clamping drill chuck comprising a chuck body (1), a clamping cone (2) that can be rotated coaxially in relation to the chuck body (1) and is axially supported on a jaw holder (3) which is mounted on the chuck body (1) and in which clamping jaws (4) are guided in guiding slits, said clamping jaws being adjustable, by means of the jaw holder (3), for the clamping and releasing action by a relative rotation between the chuck body (1) and the clamping cone (2). Said drill chuck also comprises a locking device (9) provided with a toothed ring (6) which is coaxial to the chuck axle (5), in addition to a latch mechanism (8) which is mounted on the jaw holder (3) and engages in the toothed ring (6) when subjected to the force of a spring (7).

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 centered on and rotatable about an axis and a plurality of jaws spaced angularly about the axis, radially shiftable on the body between inner and outer positions, and each having a grip edge extending along a line substantially parallel to the axis and a pair of flanks meeting at the grip edge and extending generally radially outward therefrom. The flanks of each jaw diverge radially inward from the flanks of adjacent jaws so that a tool shank engaged between the flanks of two adjacent jaws will be pushed radially toward the axis on movement of the jaws inward from the outer positions.

Abstract: A drill chuck has a chuck body centered on and rotatable about an axis and formed with angled guides and respective jaws slidable in the guides axially forward and radially toward each other and axially rearward and radially away from each other. An annular tightening element is limitedly axially shiftable on the sleeve between a front position and a rear position. Screwthreads engaged between the element and the jaws axially displace the jaws forward on rotation of the element in a tightening direction and axially displace the jaws rearward on rotation of the element in an opposite loosening direction. Respective annular arrays of teeth angularly fixed on the element and the body are interengaged and prevent relative rotation of the element and body in the rear position of the element and are spaced and permit relative rotation of the element and body in the front position of the element.

Abstract: A drill chuck has a chuck body, a holder body, and an outer sleeve surrounding the bodies, with jaws between them. A ring of teeth on one of the bodies can be engaged by a pawl angularly fixed on the other of the bodies. When engaged, the pawl and the array of teeth allow rotate relative to the chuck body in a tightening direction but not in a loosening direction. Respective interengaging stops on the other body and on the outer sleeve limit relative angular movement of the outer sleeve on the other body between a pair of angularly offset end positions. An inner control sleeve has a cam formation engageable with the pawl in only one of the end positions to hold the pawl in the freeing position. The pawl is biased by a spring in the other end position into the locking position.

Abstract: The invention relates to a drill comprising a drivable drill spindle (4) that is rotatably mounted in a housing (3) of a drill (1), and a drill chuck (2) that is connected to the spindle end and that has a chuck body (5) that is coaxially connected in a rotationally fixed manner to the drill spindle (4) and has jaws (6) that may be moved relative to the chuck body (5) by means of a tightening sleeve (14) that is rotatable with respect to the chuck body (5). Sensor means (15, 16, 17, 18, 32, 33) that influences the drive control of the drill (1) as a function of the operating state of the drill chuck (2) is associated with the housing (3).

Abstract: A drill chuck has a chuck body centered on and rotatable about an axis, a jaw holder rotatable on the body and formed with a plurality of angularly spaced guides, a sleeve surrounding the holder and body, and jaws in the guides between the sleeve and the body. Interengaging first and second stops on the body engage the sleeve and limit relative angular movement of the sleeve on the body between respective angularly offset first and second end positions. An annular array of teeth rotationally fixed to the chuck body engages first and second pawl angularly fixed on the holder. The pawls and the array of teeth are oriented such that each pawl locks in one direction and ratchets in the other, with the pawls working oppositely. Respective first and second springs urge the first and second pawls into the locking positions.

Abstract: A drill chuck has a rotatable chuck body, a tightening sleeve axially fixed but rotatable on the chuck body, a plurality of jaws on the body and radially displaceable between inner and outer end positions, and a screwthread formation for radially displacing the jaws between their end positions on relative rotation of the body and sleeve. An inner element rotationally fixed on the chuck body has an elliptical outer surface generally centered on the axis and bearing on a flexible coupling ring having an annular array or radially outwardly projecting coupling teeth. First and second rings each have an annular array of radially inwardly projecting teeth meshing with the coupling teeth. The first ring is fixed and second ring is rotatable relative to the chuck body adjacent the first ring. The second-ring array of teeth has a number of teeth different from that of the first-ring array of teeth.

Abstract: A drill chuck has a body formed with a forwardly open threaded bore and a holder sleeve rotatable on the body and formed with a plurality of forwardly open angled guides angularly equispaced about the axis. Respective jaws are shiftable radially along the guides between a widely spaced outer position and a closely spaced inner position. Each jaw has a central tool-engaging tooth and a pair of faces flanking the respective tooth, and each tooth and the adjacent flanking faces are so dimensioned and oriented relative to each other that in the inner position the flanking faces of adjacent jaws bear on one another. A pusher threaded into the bore bears axially forward on the jaws and is angularly coupled to the jaws and holder sleeve so that relative rotation or the chuck body and pusher moves the jaws between their inner and outer positions.

Abstract: A drill has a housing formed with an outlet hole, a fan expelling an air stream from the outlet hole, a drive spindle projecting from the housing adjacent the outlet and centered on and rotatable about an axis, and a chuck body carried on the housing. A tightening sleeve rotatable about the axis on the chuck body carries a plurality of radially shiftable jaws, and interengaging screw formations operatively engaged between the body and the sleeve can shift the jaws radially in the guides on rotation of the sleeve relative to the body. A shield sleeve angularly fixed to the housing and surrounding the tightening sleeve has a rear end juxtaposed with the housing radially outside the outlet hole such that the air stream enters the shield sleeve. Inside the shield sleeve forward of its rear end a passage and a particle-expelling hole collect drilling particles and blow them out the particle-expelling hole.

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 drill chuck has a chuck body centered on and rotatable about an axis and having a screwthread, a main sleeve axially fixed but rotatable about the axis on the body and formed centered on the axis with a plurality of angled forwardly open guides, and respective clamping jaws displaceable in the guides. A pusher axially engageable with clamping jaws is axially forwardly displaceable relative to the chuck body to shift the clamping jaws axially forward and radially inward in the respective guides and axially rearwardly displaceable relative to the chuck body to shift the clamping jaws axially rearward and radially outward in the respective guides. A coupling jaw threadedly engaging the screwthread of the chuck body is engageable with the pusher for axially coupling the coupling jaw to the pusher. The sleeve is coupled positively to the coupling jaw for joint rotation therewith.

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: A chuck has a drive shaft, a generally rotatable housing part adjacent the drive shaft, and a chuck body fixed to and rotatable with the shaft and formed with a plurality of guides holding respective jaws shiftable between closely spaced inner positions and widely spaced outer positions. An adjustment sleeve surrounding the body and coupled to the jaws can rotate relative to the body to shift the jaws between their positions. A latch has interengaging formations on the housing part and on the adjustment sleeve manually shiftable between a coupled position for rotationally locking the adjustment sleeve to the housing part and a decoupled position for rotation of the adjustment sleeve relative to the housing part. A torque coupler connected to the latch decouples the latch from the housing when, in the coupled position, a torque exerted between the housing and the chuck body exceeds a predetermined limit.

Abstract: A drill chuck has a chuck body centered on and adapt d to be rotated about a longitudinal axis and unitarily formed with a plurality of forwardly open angled guides angularly spaced about the axis and with a rim, respective jaws displaceable along the guides in the chuck body and each formed with a row of teeth, and a tightening sleeve rotatably surrounding the body. A threaded ring rotatable on the body about the axis within the tightening sleeve is fixed to the sleeve and formed with a screwthread meshing with the teeth of the jaws so that rotation of the ring in one direction moves the jaws radially together and opposite rotation moves them radially apart. This threaded ring is formed with a radially outwardly open groove covered by the sleeve. In addition the tightening sleeve has an inwardly projecting welt engaged in the groove.