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| Number | Title | Issue Date |
| 7431308 | Tool-holding chuck for equipping a rotating machine, provided with sequenced radial and axial locking means Sliding in the body of the chuck are jaws whose external thread is engaged with the internal thread of a nut mounted to rotate on the body. The nut is rotated by a sleeve, allowing the jaws to move. The chuck includes radial locking device which can be actuated by a... | 10/07/2008 |
| 7296803 | Chuck The present invention relates to a self-tightened reverse locking chuck, comprising: a body member, a nut, jaws, a bearing, a drive sleeve, a front sleeve, an annular drive member, a movable ratchet wheel, a reverse locking ratchet wheel, a detent lock ring, a contr... | 11/20/2007 |
| 7198277 | Wheel chuck with counterweighted jaws A wheel chuck includes a plurality of moveable jaws mounted upon a support structure. A plurality of moveable counterweights are mounted upon the support structure with each counterweight opposite from and connected to a corresponding one of the jaws. Upon rotation ... | 04/03/2007 |
| 7108465 | Jig plate An end surface 820 of a work 80 gripped by a chuck 50 equipped to a main spindle of a lathe-type machine tool is machined, and at the same time has a screw hole 830 formed thereto. The jig plate 60 is provided with a main body 6... | 09/19/2006 |
| 6988734 | Rotating machine, approximately in the form of a hand drill, a percussion drill, a drill hammer or a battery screwdriver The invention relates to a tool-receiving element, the tool-clamping device thereof being directly integrated into the rotating machine. A multiple-edge longitudinal recess (21,121,221), especially a hexagonal recess, extends into the drive shaft (18,118,2... | 01/24/2006 |
| 6948893 | Clamping system coated with solid lubricant for machine tools The invention relates to a clamping system as a point of separation inside a tool or workpiece support system, or as an interface between a tool or workpiece support system and a machine tool for the detachable, non-positive connection of two clamping system parts. ... | 09/27/2005 |
| 6874790 | Device for rotating disc-shaped objects A device for rotation of disc-shaped elements of different diameter, such as matrices for manufacturing audio and video discs. The device comprises a rotatable chuck (10) in which three arms (20) distributed evenly in the peripheral direction are pivot... | 04/05/2005 |
| 6860488 | Drill chuck with front-end shield A drill chuck has a chuck body rotatable about a chuck axis and having a rear end adapted to fit with a drive spindle and a front end formed with a tool recess. A plurality of jaws angularly spaced on the body about the axis and exposed in the tool recess are radial... | 03/01/2005 |
| 6814528 | Device for supporting a machine part when subjected to force The invention relates to a device for supporting a first machine part when a second machine part is subjected to force, the second machine part being mounted on the first machine part or being accommodated therein, in particular device for supporting a shaft (1 | 11/09/2004 |
| 6726222 | Drill chuck for smooth- and hex-shank bits A drill chuck has a chuck body centered on an axis and forming an axially forwardly open bit-receiving recess, an axially forwardly open polygonal-section seat at a base of the recess, and a plurality of jaws spaced angularly around the seat. The jaws can be displac... | 04/27/2004 |
| 6517295 | Power drill housing and chuck rotation A power drill housing and chuck rotation indicator arrangement in which the power drill housing is formed of two symmetrical shells abutted against each other, the shells each having a front end terminating in a chuck guard defining a respective semi-circ... | 02/11/2003 |
| 6474863 | Agitator and fixing device thereof An agitator comprises a main body for supporting rotatably a rotary shaft, a chuck for connecting detachably an agitating rod with the rotary shaft, starting means for starting the rotation of the rotary shaft when the chuck is covered with a chuck cover,... | 11/05/2002 |
| 6464235 | Lathe chuck with jaw latches A lathe chuck has a chuck body centered on and rotatable about a main axis and formed with a plurality of radially extending jaw-guide grooves and, transverse to the grooves, with respective guide passages each in turn formed with an abutment. Respective ... | 10/15/2002 |
| 6227549 | Insulated chuck jaw A chuck jaw that is configured and arranged to be used in combination with other chuck jaws for securely retaining a rotatable accessory, such as a drill bit, in position in a chuck assembly, where the chuck jaw includes a chuck jaw body that defines a ge... | 05/08/2001 |
| 6186712 | Tool holder A tool holder includes a holder body having a first section to be attached to a machine and a second section coaxially exteding from the first section, a ring in which part of the holder body is received, and an assembling device for removably assembling ... | 02/13/2001 |
| 5911578 | Head assembly for a medical handpiece A head assembly for a medical handpiece includes a head housing and a rotor spindle contained in the housing. The spindle defines a longitudinal through-bore with an internal screw thread. An adjustable chuck is received within the through-bore of the spi... | 06/15/1999 |
| 5901967 | Changeable chuck system In a changeable chuck system which can grip and release a workpiece by means of a chuck C by itself, fluid shut-off valves 20a and 20b are provided on a fluid supply portion provided on the tip of a main spindle 2 of a machine tool. When the chuck C is mo... | 05/11/1999 |
| 5846036 | Protective cover A protective cover comprising a tool covering portion and a pressure contact tube portion. The pressure contact tube portion is formed on its periphery with a multiplicity of resilient pieces. When the pressure contact tube portion is fitted over a front ... | 12/08/1998 |
| 5816585 | Chuck element for machine tools with rotating jaw chuck A chuck system for machine tools with a rotating jaw chuck has clamping jaws of the jaw chuck which can be radially adjusted relative to an axis of rotation. The clamping jaws are displaceably mounted in a bearer connected with a drive shaft, and in which... | 10/06/1998 |
| 5782591 | Universal tool holding device for use with a power-driven, rotatable spindle machine An apparatus and method for securely, mechanically retaining an elongated tool holding arbor in the tapered bore formed in the spindle of a conventional, rotatable, power driven spindle machine. The arbor is mechanically secured to the spindle by bridging... | 07/21/1998 |
| 5716058 | Chuck A chuck having jaws that are displaceable in radial guideways and can be operated by wedge bars. The wedge bars can be displaced beyond a working space to such an extent that the teeth thereof disengage from the teeth of the pertaining jaw. Each of the we... | 02/10/1998 |
| 5630594 | Chuck A chuck, each of the clamping jaws of which is adapted to be driven by a wedge bar that can be displaced in the chuck body beyond the clamping stroke to such an extent that the clamping jaws can be removed radially. A locking mechanism in the form of a ro... | 05/20/1997 |
| 5501555 | Blocking device for tool holder of hand power tool and hand power tool provided therewith A hand power tool has a tool holder, and a blocking device for the tool holder, the blocking device being connectable with the tool holder and provided with a key unlockable blocking body which secured the blocking device from undesired withdrawal. When t... | 03/26/1996 |
| 5496139 | Collet lock arrangement for power tool An improved collet lock arrangement for a hand-held power tool having a housing is provided. The collet lock arrangement includes a powered rotatable shaft including a base portion and distal end portion defining a collet for adaptably connecting a driver... | 03/05/1996 |
| 5489167 | Chuck actuator with wedge-type locking A holder for a tool or workpiece has a tubular working spindle centered on and rotatable about an axis, an elongated pulling element axially displaceable in the spindle and having a front end provided with holder jaws and a rear end with a forwardly direc... | 02/06/1996 |
| 5433562 | Cutter quick change system The tool spindle has a drive plate on which a cutter is mounted. Drive keys on the drive plate engage slots in the cutter so that the cutter rotates with the drive plate. A clamp bar is provided to clamp the cutter against the drive plate. The cutter is f... | 07/18/1995 |
| 5158307 | Chuck for machine tools A machine tool chuck in which a wedge member is provided to cause radial displacement of workpiece clamping pawls for replacement. The replacement can be made with minimum variations in radial position at which the clamping pawls are relocated. To this en... | 10/27/1992 |
| 5141239 | Scroll chuck for lathe An improved scroll chuck for holding a workpiece in a lathe including a jaw holder having a front side and a rear side, radially extending slots in the front side and means for attaching the holder to the lathe for turning about a central axis. Two or mor... | 08/25/1992 |
| 5139277 | Rapidly convertible chuck adapters A chuck having a sliding outer jaw is locked against any adjustment in radial position relative to the inner jaw on which it is moved radially by a radially movable pin which, in one radial position, prevents axial retraction of the post interconnecting i... | 08/18/1992 |
| 4975004 | Hot line attachment An apparatus for drilling into energized utility components without having to first de-energize them so as to allow continuous service to consumers is provided. The apparatus includes a drive shaft constructed of an insulating material terminating in a dr... | 12/04/1990 |
| 4536113 | Automatic jaw control for reversible power tool In a reversible power tool, such as an electric drill, a clutch mechanism is coupled to selectively connect and disconnect a chuck jaw reciprocating means to advance and retract the jaws of a chuck or to allow the chuck jaw reciprocating means to be carri... | 08/20/1985 |
| 4504070 | Anti-centrifugal chuck An anti-centrifugal power chuck of the type having a plurality of radially-movable jaws and respective wedge-like actuators associated therewith for the purpose of displacing the jaws into engagement with a workpiece for holding same as the chuck is rotat... | 03/12/1985 |
| 4443021 | Apparatus for adjusting two end positions limiting a clamping stroke In a clamping unit, particularly in a chuck with exchangeable jaws, one terminal clamping position is reached during opening when the clamping jaws approach the limit of stability. The other end position is reached during closing when the jaws approach th... | 04/17/1984 |
| 4275892 | Force-balanced lathe chuck with safety ring A lathe chuck has a chuck body rotatable about a chuck axis and carrying a plurality of angularly spaced and radially displaceable jaws each formed with an axially backwardly open jaw recess having at least one side inclined to the axis. Respective jaw ac... | 06/30/1981 |
| 4243236 | Split-jaw lathe chuck with rotary coupling members A lathe chuck has a chuck body rotatable about a chuck axis and formed with a plurality of angularly spaced and radially extending inner guides receiving respective inner jaw parts and with a plurality of angularly spaced and radially extending outer guid... | 01/06/1981 |
| 4200300 | Lathe chuck with removable jaws A chuck has a chuck body rotatable about an axis and formed with a plurality of angularly spaced radially extending inner guides and a plurality of angularly spaced and radially extending outer guides. An inner jaw part wholly received within the chuck bo... | 04/29/1980 |
| 4078814 | Power-actuated chuck with means for counter-acting centrifugal force on the chuck jaws A power-actuated chuck has a chuck body provided with a plurality of chuck jaws which can be displaced radially to engage a workpiece. Centrifugal force tending to urge the jaws outwardly is counteracted by respective centrifugal weights at the ends of le... | 03/14/1978 |
| 4026566 | Power-driven wedge-activated chucks A chuck for lathes and other machine tools has a chuck body provided with axially shiftable wedging members to actuate the jaws, a rotatable guard ring prevents full axial withdrawal of these members from sockets in the jaws in one angular position of the... | 05/31/1977 |
| 4007943 | Power operable jaw chuck A jaw chuck for mounting on a spindle in which a chuck body is provided which has chuck jaws radially reciprocable thereon. A piston is reciprocable on the chuck axis and cooperating elements of cam means are provided on the piston and the jaws for positi... | 02/15/1977 |
| 3950625 | Safety switch for drill press using chuck key The subject safety switch insures that the chuck key has been removed from the chuck prior to operation of the drill press. A slide "on-off" switch is engaged by a guard that prevents the sliding movement necessary to turn the switch on. The guard of the ... | 04/13/1976 |
