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| Number | Title | Issue Date |
| 8056906 | Self-tightening drill chuck 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 r... | 11/15/2011 |
| 7360770 | Keyless chuck with automatic and manual locking A keyless chuck having both an automatic locking feature and a manual locking feature. The automatic locking feature provides for automatic locking of the chuck in a tightened state when a predetermined tightening torque has been exceeded. The chuck can be utilized ... | 04/22/2008 |
| 7328904 | Power tool with power-take-off driven pusher-type chuck having device for reducing tension in pusher screw A chuck for a drill/driver. The chuck can include an input shaft having a cavity, a chuck actuating shaft and a chuck actuating screw. The chuck actuating shaft can be received in the cavity and can be rotatable about a chuck axis. The chuck actuating shaft can have... | 02/12/2008 |
| 7316404 | Drill/driver chuck A drill/driver chuck has a cylindrical member (2) with a central axial bore (4). A plurality of further bores (6) slanted with respect to the axis of the cylindrical member (4). A jaw actuator (10) is coupled to each jaw (8)... | 01/08/2008 |
| 7216873 | Drill chuck 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 slee... | 05/15/2007 |
| 7156402 | Quick-tighten drill chuck 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 cla... | 01/02/2007 |
| 7044480 | Non-impact keyless chuck A non-impact keyless chuck suitable for use with manual or powered drivers is disclosed. The chuck comprises a body which carries a rotatable split nut having a relatively fine thread and a plurality of slidable jaws, which may be identical, driven by the rotatable ... | 05/16/2006 |
| 6932357 | Gear reducing collet nut assembly A gear reducing collet nut assembly is provided for holding a tool bit. The assembly includes an outer grip sleeve that can be rotated to actuate a clamping structure with a bore for holding a tool bit. More specifically, the assembly includes a planetary gear syste... | 08/23/2005 |
| 6641145 | Miniature drill chuck 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 long... | 11/04/2003 |
| 6626615 | Chuck for chucking a small bit and table drill with the same 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;... | 09/30/2003 |
| 6241260 | Spring-loaded quick clamp chuck 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 mech... | 06/05/2001 |
| 5685549 | Chuck assembly for a tool bit 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 ... | 11/11/1997 |
| 5540124 | Adjustable gripping device 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 surface... | 07/30/1996 |
| 5407215 | Chuck assembly for holding releasably a bit member 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 w... | 04/18/1995 |
| 5031925 | Keyless chuck for rotary tool 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 ... | 07/16/1991 |
| 5000065 | Jaw assembly for power tongs and like apparatus 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... | 03/19/1991 |
| 4902025 | Self-clamping or self-tightening chuck 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 (2... | 02/20/1990 |
| 4892016 | Adjustable socket 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 slideway... | 01/09/1990 |
| 4726719 | Drill chuck and tool for rotary drilling and rotary percussion drilling 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 pr... | 02/23/1988 |
| 4695065 | Keyless chuck for rotary tool 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 ... | 09/22/1987 |
| 4655464 | Drill chuck for a hand-held device 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 ... | 04/07/1987 |
| 4652187 | Clamping chuck for holding drilling and/or cutting tools 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 t... | 03/24/1987 |
| 4608887 | Adjustable socket including rotatable adjuster 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 pr... | 09/02/1986 |
| 4575108 | Drill chuck attachments 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 thre... | 03/11/1986 |
| 4563013 | Drill chuck for a hand-held drilling device 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-co... | 01/07/1986 |
| 4527809 | Quick action keyless drill chuck 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 ... | 07/09/1985 |
| 4508180 | Cylindrical guide member for an impacting mechanism in a hammer drill 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 gu... | 04/02/1985 |
| 4366732 | Adjustable socket wrench 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 pl... | 01/04/1983 |
| 4305597 | Keyless self-tightening chuck 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 bear... | 12/15/1981 |
| 4302021 | Nonloosening chuck 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 mean... | 11/24/1981 |
| 4275893 | Self-tightening keyless chuck 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 surface... | 06/30/1981 |
| 4266789 | Machine tool chuck 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... | 05/12/1981 |
| 4260169 | Keyless chuck 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... | 04/07/1981 |
| 4252333 | Keyless chuck 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 ... | 02/24/1981 |
| 4213623 | Nonloosening drill chuck 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 ... | 07/22/1980 |
| 4154450 | Drill chucks 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 frust... | 05/15/1979 |
| 4097054 | Drill chucks 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 frust... | 06/27/1978 |
| 3970323 | Chuck for drill 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 th... | 07/20/1976 |
