| Patent Number |
Title Of Patent |
Date Issued |
| 4945819 |
Clamping apparatus for the rotary spindle of a machine tool |
August 7, 1990 |
| The chuck or collet actuating apparatus for a machine tool comprises a rotating clamping cylinder, an axially slidable clamping piston rotating with the clamping cylinder and a coaxial cylindrical projecting portion in the clamping cylinder. The projecting portion carries a thread, on wh |
| 4932674 |
Lathe chuck with chuck-clamping monitor |
June 12, 1990 |
| An operation control device is provided for a chuck by which the rotary drive for the chuck is disengaged when the clamping motion leading to clamping of the workpiece in the chuck has not been provided or is not sufficient. The clamp jaws of the chuck are adjustable by a drive member |
| 4773657 |
Drill apparatus |
September 27, 1988 |
| The drill chuck body is connected to a drill spindle, and chuck jaws forming a retention for the drill tool can be adjusted by turning a control ring. A lock sleeve serves to secure the control ring whereby the lock sleeve, in the direction of shifting, is maintained against the cont |
| 4730837 |
Jaw chuck for workpieces having a plurality of processing axes |
March 15, 1988 |
| The chuck has a mounting body with an associated chuck assembly and a pivot device. For clamping of a workpiece at least one chucking jaw can adjustably be swung away from its chuck assembly, and the clamped workpiece, together with the chucking jaws can be turned about a pivot axis |
| 4703942 |
Hammer drill |
November 3, 1987 |
| A drill chuck can be operated with or without an axial displacement mode with respect to the drill spindle. For operation without the axial displacement mode, lock formations can be moved by way of a coupling ring to engage with a seat portion of a contact sleeve which is fixed to the |
| 4703941 |
Hammer drill chuck assembly |
November 3, 1987 |
| The percussion drill apparatus is comprised of a drill spindle which powers the chuck, and the connection for rotation of the drill chuck to the drill spindle is by way of at least one coupling element which is secured in retainers respectively provided in the drill spindle and the chuck |
| 4702485 |
Percussion drill and chuck arrangement therefor |
October 27, 1987 |
| A drill chuck can be driven by and rotated with a drill spindle. The drill chuck has an axial passage through which the impact effort of a central anvil shaft can be transferred to the drill. The drill can be held in chuck jaws, the movement of which can be controlled by a control sleeve |
| 4690416 |
Power chuck |
September 1, 1987 |
| The jaws of the chuck include a base jaw and a separate, releasable mounting jaw. These two jaw components are connected by at least one shaft which is guided with male-type screw threads in its one end in female-type screw threads of the base jaw. The other end has a lock head which has |
| 4669741 |
Power-operated jaw chuck for eccentrically supporting workpieces in a machine tool |
June 2, 1987 |
| The power chuck is particularly intended for holding crankshafts. The chuck has a base, a head, and clamping jaws. The head is radially guided with respect to a clamping axis which extends parallel to an axis of rotation. The clamping jaws are connected to a drive piston by way of axiall |
| 4664568 |
Drill chuck for grooved and ungrooved drill-bit shanks |
May 12, 1987 |
| A chuck centered on an axis and having a plurality of jaws each displaceable radially of the chuck axis is usable in combination with a drill bit having a shank formed with respective grooves each having axially extending and angularly directed flank surfaces engageable with the jaws |
| 4658912 |
Percussion drill |
April 21, 1987 |
| A percussion drill has a percussion drill spindle and a drill chuck member which is turned and axially driven by the spindle. The drill chuck member has an axial passage through which the respective percussion action can be transferred from the spindle to that end of the drill which is h |
| 4627628 |
Hammer drill chuck |
December 9, 1986 |
| A drill chuck for a hammer drill with a plurality of clamp jaws fed in feed channels to engage a drill in a tool holder, the clamp jaws being adjustable by means of a support ring, the support ring bearing a restraining casing having teeth thereon which can engage gearing in the supp |
| 4627185 |
Safety hammer lock for a hand weapon |
December 9, 1986 |
| A safety mechanism for a revolver having a breech lock arranged at the drum on a breech lock shaft and able rotate to enable loading of the respective cartridge chamber. When the breech lock is swung out, a detent latch is disengaged from the drum catch by way of the breech lock shaft an |
| 4621820 |
Percussion drilling apparatus |
November 11, 1986 |
| A drill chuck assembly for a percussion or hammer drill in which the chuck body is mounted on a rotatable drill spindle and the hammer impact is transmitted by a ram through the spindle to the bit retained in the chuck. A coupling ring surrounding a coaxial portion of the chuck body and |
| 4621819 |
Nonloosening hammer-drill chuck |
November 11, 1986 |
| A hammer drill having a drive spindle rotatable about a spindle axis and a hammer displaceable axially in the drive spindle has a chuck in turn having a generally tubular chuck body centered on a chuck axis, formed with an axially centered array of axially backwardly open recesses, and |
| 4621445 |
Weapon with locking trigger |
November 11, 1986 |
| A revolver having a trigger and a hammer which are each pivotally journaled in the weapon frame. When the hammer is brought into its tensioned position, it moves the trigger into the ready-to-fire position in which the trigger arrests the hammer in the tensioned position. For locking the |
| 4619460 |
Hammer-drill chuck |
October 28, 1986 |
| A chuck is used with a hammer drill having a drive spindle rotatable about a spindle axis and a hammer displaceable axially in the drive spindle, and with a drill bit having a shaft extending along a shaft axis and having a radially outwardly open and at least generally axially extending |
| 4616383 |
Belt buckle |
October 14, 1986 |
| A belt buckle plate having a rear face formed with a pair of axis-defining pivots one of which is a radially closed eye and the other of which has a radially open slot. A loop adapted to engage through the end of a belt has a short pintle and a long pintle extending in the same direction |
| 4602799 |
Hammer-drill chuck |
July 29, 1986 |
| A chuck has a chuck body centered on a chuck axis and having an axially forwardly opening and axially centered recess and an adjustment ring rotatable but not axially displaceable on the chuck body, having a central hole aligned with the recess, and formed with a plurality of guide p |
| 4593588 |
Face drive for lathe |
June 10, 1986 |
| A lathe which rotates a workpiece on centers about an axis, with one end face of the workpiece directed axially backward and having a radially outer periphery generally centered on the axis, has a drive formed by a body axially adjacent the workpiece end face and rotatable about the axis |
| 4586859 |
Autolocking hammer-drill chuck |
May 6, 1986 |
| A hammer-drill chuck comprises a generally tubular chuck body centered on a chuck axis and having a central axially extending bit-receiving passage and a radially outwardly open chuck-key centering hole. A plurality of jaws radially but not angularly displaceable in the chuck body have i |
| 4583751 |
Locking drill chuck with protection against overtightening |
April 22, 1986 |
| A drill chuck has a body carrying jaws displaceable between inner and outer positions and an adjustment ring operatively connected to the jaws for movement from outer to inner positions on rotation of the adjustment ring in a tightening direction. This adjustment ring has teeth engageabl |
| 4582331 |
Fast-release power-chuck assembly for a lathe |
April 15, 1986 |
| A power chuck assembly has a lathe spindle extending along and rotatable about an axis and having axially opposite front and rear ends. An axially displaceable actuator rod extends at the axis through the spindle and has front and rear rod ends at the respective spindle ends. This rod is |
| 4493242 |
Actuator for power chuck |
January 15, 1985 |
| A chuck actuator has a cylinder extending along a main axis and a piston axially displaceable in the cylinder, forming therein two compartments, and having an axially backwardly extending stem also centered on the axis and formed with two respective intake passages each having one end op |
| 4418927 |
Lockable drill chuck |
December 6, 1983 |
| A drill chuck normally has a chuck body rotatable about a chuck axis and provided at its front side with a plurality of axially forwardly projecting and radially displaceable jaws. A tightening ring rotatable on the body about the axis thereof is connected via appropriate screwthread |
| 4418926 |
Nonloosening drill chuck |
December 6, 1983 |
| A drill chuck has a chuck body rotatable about a chuck axis and formed with a radially open threaded bore and with a radially open unthreaded bore. A plurality of jaws are radially displaceable on the chuck body. A tightening ring is rotatable on the body about the axis thereof and is |
| 4411568 |
Collet-type chuck |
October 25, 1983 |
| A chuck has a chuck body adapted to be rotated about an axis and formed centered on the axis with a forwardly open tool-receiving seat. A holding element is displaceable axially in the body between a rear holding position securing a tool in the seat and a front releasing position per |
| 4362306 |
Split-jaw lathe chuck |
December 7, 1982 |
| A chuck has a chuck body rotatable about a chuck axis and subdivided along a plane perpendicular to this chuck axis into a front chuck part and a rear chuck part integrally connected together. The rear chuck part is formed with a plurality of angularly spaced and radially extending rear |
| 4332186 |
Hydraulic actuator for lathe chuck |
June 1, 1982 |
| An actuator for a power chuck has a hollow actuator housing having a rearwardly extending housing tube that is centered on an axis and that has a closed rear end. This tube is formed with a pair of axially spaced and radially inwardly open grooves both having axial lengths equal at least |
| 4319516 |
Fan-cooled actuator for power chuck |
March 16, 1982 |
| A power-chuck actuator has an actuator body forming an axially throughgoing passage and formed centered on this axis with an annular piston displaceable axially forwardly and backwardly and having a collar projecting from the front of the actuator. This collar can be connected to the |
| 4302021 |
Nonloosening chuck |
November 24, 1981 |
| 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 |
| 4275892 |
Force-balanced lathe chuck with safety ring |
June 30, 1981 |
| 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 actuators are axially displaceable |
| 4272087 |
Nonloosening drill chuck |
June 9, 1981 |
| A chuck has a chuck body rotatable about a chuck axis and provided with a plurality of jaws which can be radially displaced toward one another by rotation of a tightening sleeve on the chuck body in a tightening direction and which can be displaced radially apart by rotation of the t |
| 4270763 |
Split-jaw lathe chuck with lockable inner jaw parts |
June 2, 1981 |
| A lathe chuck has a chuck body rotatable about an axis and formed with a plurality of angularly spaced and radially extending inner guides and with a plurality of angularly spaced and radially extending outer guides. Each of the inner guides in turn has an axially forwardly directed and |
| 4243237 |
Force-compensated split-jaw lathe chuck |
January 6, 1981 |
| 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 guides receiving respective outer jaw |
| 4243236 |
Split-jaw lathe chuck with rotary coupling members |
January 6, 1981 |
| 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 guides receiving respective outer jaw |
| 4240645 |
Force-compensated split-jaw lathe chuck |
December 23, 1980 |
| A lathe chuck has a chuck body rotatable about a chuck axis and formed with a plurality of angularly spaced radially extending inner guides receiving respective inner jaw parts and with a plurality of angularly spaced and radially extending outer guides receiving respective outer jaw par |
| 4230327 |
Drill chuck |
October 28, 1980 |
| A drill chuck has a chuck body provided with jaws that are surrounded by a tightening sleeve which can be rotated on the body to tighten or loosen the jaws. This sleeve has an array of radially inwardly projecting sleeve teeth spaced above an annular surface on the body and normally bear |
| 4214765 |
Lockable drill chuck |
July 29, 1980 |
| A drill chuck has a chuck body defining a chuck axis and provided with a plurality of generally angularly equispaced and radially displaceable tool-engaging jaws. A tightening ring and sleeve rotatable on the chuck body about the chuck axis have formations that radially displace the jaws |
| 4213623 |
Nonloosening drill chuck |
July 22, 1980 |
| 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 |
| 4213622 |
Lockable chuck for hammer drill |
July 22, 1980 |
| A chuck has a tightening sleeve rotatable on a chuck body about the chuck axis to radially displace a plurality of tool-clamping jaws on the chuck. A bolt is slidable radially in the chuck between an outer position engaged between teeth at the edge of the tightening sleeve preventing rot |
| 4200300 |
Lathe chuck with removable jaws |
April 29, 1980 |
| 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 body is radially displaceable i |
