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| Number | Title | Issue Date |
| 6003416 | Tool holding device A tool holding device comprising a tool pot in which an interchangeable tool is releasably fitted and removed, a ball holder firmly fitted in the tool pot and having a guide surface around which a shank portion of the tool is releasably fitted for radiall... | 12/21/1999 |
| 5997226 | Cutting tool chuck with non-circular cross-section and cutting tool chuck assembly A cutting tool chuck comprises a spindle provided with a tapered bore having the shape of a regular hexagonal prismoid for receiving a shank of a tool holder or a cutting tool, a retainer placed in the tapered bore of the spindle, and a plurality of rolle... | 12/07/1999 |
| 5807038 | Drill chuck A drill chuck for holding a tapered end of a tubular drill bit. The chuck comprises a driving member having a tapered surface for frictional engagement with the tapered end of the drill bit, a first holding member mounted on the driving member and a secon... | 09/15/1998 |
| 5788249 | Cutting tool chuck for chucking cutting tool A cutting tool chuck holds a collet so as to be easily changed. In the cutting tool chuck, a fastening collar (12) is screwed on a chuck sleeve (14). The fastening collar (12) is provided with an internal guide groove (24), deep recesses (24a) formed in a... | 08/04/1998 |
| 5704738 | Tool attachment assembly A tool attachment assembly having a housing with a central axis, a toolholder with a tool carrying portion and a mounting portion spaced axially from the tool carrying portion, a projection on one of the housing and mounting portion of the tool holder, an... | 01/06/1998 |
| 5595391 | Relating to tapered connections An improved connection between a conical shank and conical receptacle is provided. A plurality of uniform resilient elements are mounted in a circumferential band arrangement adjacent the surface of the end of one of the shank or receptacle opposite to th... | 01/21/1997 |
| 5593258 | Tool holder A tool holder has a main sleeve to be attached to a tapered bore of a spindle of a machine tool, and a subholder which is coupled with the main sleeve and to which a tool is attached. The tapered shank of the main sleeve is inserted into the tapered bore ... | 01/14/1997 |
| 5407308 | Tool holder coupling apparatus A tool holder coupling apparatus for attaching a tool holder to a machine spindle, has a tool holder which includes a support portion and a pull stud bolt. The support portion has a tapered surface portion of relatively large diameters, a straight portion... | 04/18/1995 |
| 5397204 | Tool for engraving machines The invention concerns a new type of tool for engraving machines comprising an oblong body (11a) provided at one end of an insert-receiving (19) pocket (18). Said insert includes a cutting tip end (19a) at one end, one rear surface (23), as well as an int... | 03/14/1995 |
| 5322304 | Tool holder-spindle connection A tool holder assembly for connecting a tool to a spindle. The tool holder assembly defines a conical envelope for seating in a conical seat defined by the spindle and an annular clamping surface in surrounding relation to the conical envelope for seating... | 06/21/1994 |
| 5311654 | Tool holder system and method of making A tool holder for use in a machine tool spindle comprising a shank portion, a tool mounting portion and a circular flange portion. Disposed in the distal end of the mounting portion is a central aperture while disposed in the distal end of the shank porti... | 05/17/1994 |
| 5158408 | Chuck device In a support device to hold a tool or a workpiece, a tightening cylinder is provided at inside with an insertion hole for a substance to be held and on an outer circumference with a taper surface, a rotary cylinder is rotatably and externally fitted to ou... | 10/27/1992 |
| 5074025 | Threaded shank drill assembly A combination drill and drill adapter comprises a drill having a shank portion for mounting the drill, and an adapter having an opening for receiving the drill. The drill shank is generally cylindrical in shape and, at a portion adjacent to an end of the ... | 12/24/1991 |
| 5062749 | Tool coupler A tool coupler is provided, comprising an elongated body having upper and lower ends and further including a non-circular first axial bore extending at least partially through the body from the upper end toward the lower end, a flange extending radially f... | 11/05/1991 |
| 5048375 | Method for constructing a rotating cutting tool Disclosed is a very small sized rotating and cutting tool comprising a rotating and cutting part such as drill bit and a shank which is a separate solid body having a through aperture permitting insertion of the rotating and cutting part into the through ... | 09/17/1991 |
| 4934883 | Tool assembly The invention relates to a tool components and a method of assembling tool components. One tool component comprises a central recess and a fastener. The recess is non-circular in cross-section. Another tool component has a central projection and a central... | 06/19/1990 |
| 4907660 | Interchangeable sectional mining drill and bolt driver system An interchangeable, sectional mining drill and bolt driver system for use with a drilling machine, includes a chuck, a driver, a bolt wrench-drill steel driver, a combination driver, a male hex coupler, a female hex coupler, a universal bar, a flat spring... | 03/13/1990 |
| 4865336 | Apparatus for securing a cutting tool in a tool holder and machine tools employing the same An apparatus and tool assembly containing the same which includes a rotatable ring and a series of bearings in contact with the inner surface of the rotatable ring wherein the bearings are angled with respect to the longitudinal axis of the cutting tool a... | 09/12/1989 |
| 4834597 | Tool assembly, tool components and method of assemblying said components The invention relates to a tool assembly and a method of assembling the tool. The assembly comprises a machine spindle component and a tool component for chip removal. The spindle component comprises a central clamp and a central recess. The tool componen... | 05/30/1989 |
| 4721423 | Chuck A chuck allowing to mount a cutting tool on the spindle of a machine tool. The chuck includes an ahead projecting chuck cylinder provided on the one side of a chuck body in a mated fashion to each other, and a tightening rotary sleeve mounted through need... | 01/26/1988 |
| 4684301 | Machine tool spindle and tool holder A machine tool spindle, which serves for interchangeably receiving tool holders (13) having different shanks (8,16), has in the spindle head (1a) thereof a frusto-conical receiving bore (3) for the reception of a steeply tapered conical shank of a first t... | 08/04/1987 |
| 4660840 | Needle-roller type chuck An improved needle-roller type chuck having a cylindrical portion extending forwardly from a chuck main body which is constituted by an inner cylinder integrally formed with a chuck main body and an outer cylinder fixed as one unit, onto the outer periphe... | 04/28/1987 |
| 4632195 | Roof drill system An automatic drive lock drill system for roof drilling with a bit and drill steel components which are assembled axially one by one in telescoping relationship when the acircular drive shank on one part is inserted into an acircular recess in an adjacent ... | 12/30/1986 |
| 4630980 | Chuck assembly for a machine tool A chuck assembly for use in a machine tool for holding a tool element comprises a chuck body having a sleeve integrally formed therewith so as to extend in the direction, which sleeve has a support bore defined therein for the receipt and support of the t... | 12/23/1986 |
| 4615402 | Drill bit and extension adapter An adapter for detachably mounting a drill bit on an extension, is described as having a button-type catch with outwardly diverging flanges, and a separate, split ring of spring steel for exerting a spring biasing force against the button catch. The butto... | 10/07/1986 |
| 4493595 | Compact multiple spindle boring head with quick change tool supports A multiple spindle boring head including a plurality of boring spindles simultaneously radially positionable relative to a central boring head axis by a plurality of associated lead screws which are mounted for rotation but not translation relative to the... | 01/15/1985 |
| 4454922 | Drill rod and drilling apparatus A drill rod assembly for use in rotary drilling in a mine roof includes a plurality of releasably engageable drill rod members connected in end to end relation. One end of the assembly receives a cutting bit and the opposite end is drivingly connected to ... | 06/19/1984 |
| 4385854 | Collet chuck assembly for taps A collet chuck assembly used for the attachment of a tap to the spindle of a tapping machine is provided. A bore for insertion of the base end of the tap is formed in the lower portion of a cylindrical portion, and at least one O-ring is mounted on the in... | 05/31/1983 |
| 4379667 | Chuck for machine tools A needle-roller type chuck for machine tools which includes a chuck body having a chuck barrel integral with the leading end portion of the chuck body. The chuck barrel has a leading end portion and an outer peripheral surface tapered to form a conical su... | 04/12/1983 |
| 4293253 | Tool holder and carbide insert There is a disclosed tool holder and bit construction for use in precision machining operations, wherein the tool holder is provided with means to removably position the same for rotation by a machine spindle, and a cavity of precise rectangular uniformly... | 10/06/1981 |
| 4251113 | Hammer for breaking strong abrasive materials A hammer for breaking down strong abrasive materials comprising a body with a movable ram reciprocated by a drive and provided with a socket accommodating a tool intended to break down the materials by impacts during reciprocation of the ram. The end of t... | 02/17/1981 |
| 4226562 | Toolholder A toolholder has a shank with a tapered body which is adapted to fit into a complementary socket in an end face of a machine tool spindle. A blind bore in the body is engageable by holding means for holding the shank in the socket. A first axial section o... | 10/07/1980 |
| 4211510 | Adjustable boring head An adjustable boring tool including an axial shank and a socket for mounting a cylindrical boring bar with an offset axis clamped in adjustable position through transverse and longitudinally slotted segments on one side of the socket together with a trans... | 07/08/1980 |
| 4206821 | Roof drill and drill rod system An improved roof drill bit and roof drill driving assembly which is characterized as a "hands off" type in which the drill, driver, and drill extension are designed and assembled to have a stability which enables the operator to avoid guiding the drill wi... | 06/10/1980 |
| 4134597 | Holder for self-drilling dowels A holder for a self-drilling dowel has a frusto-conically shaped bore for holding the locking-in cone on the dowel. The surface of the bore has three uniformly angularly spaced rounded recesses so that three relatively narrow strips of the surface provide... | 01/16/1979 |
| 4062552 | Tool-holder chuck A tool-holder chuck for receiving therein a tool holder provided with various tools such as end mills or drills, etc., e.g. in a milling machine, which chuck can be changed easily when necessary, comprising a clamp including a nut which is threaded to a c... | 12/13/1977 |
| 4021051 | Chuck for machine tools There is disclosed a chuck adapted to be attached to the spindle of a machine tool, for gripping an intended tool, comprising a chuck barrel adapted to grip an intended tool and having a conical outer peripheral surface and not having slots extending alon... | 05/03/1977 |
| 3975984 | Self aligning collect for machine tools The invention is concerned with an improvement in a machine tool gripping assembly of the type which comprises a housing with a bore therewithin and a collet slidable toward and retractable from a spindle facing end portion of said bore, the collet having... | 08/24/1976 |
