With Tool-retaining Means Patents (Class 408/239R)
  • Patent number: 6135684
    Abstract: A tool holder includes a holder body having a first section to be attached to a machine and a second section having a substantially constant diameter and coaxial with the first section, a ring extending around the second section, and an assembling device for removably assembling the ring to the holder body. The assembling device is releasably engaged with an inner face of the ring and an outer face of the second section to removably assemble the ring to the holder body.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: October 24, 2000
    Assignee: Manyo Tool Kabushiki Kaisha
    Inventor: Chikara Senzaki
  • Patent number: 6126370
    Abstract: A rotary device has a releasable tool holder. A spindle with two ends has one end adapted to secure to a rotary device and the other includes a bore to receive a tool. A mechanism to retain and release the tool from the spindle bore is coupled with the spindle adjacent the bore end. At least two unlike retention members to apply a force on the tool in the bore are adjacent the bore. A sleeve surrounds the bore end of the spindle as well as the at least two unlike retention members. The sleeve has a common surface to apply a force on the at least two unlike retention members such that when the sleeve is axially moved along the spindle, the force is varied with respect to the position of the surface on the retention member. This force maintains the tool in the bore or enables the tool to be removed from the bore. A biasing member maintains the sleeve in a retention position on the spindle.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: October 3, 2000
    Assignee: Black & Decker Inc.
    Inventors: Dale K. Wheeler, Thomas J. Wheeler
  • Patent number: 6109152
    Abstract: A cutting tool assembly wherein a cutting head is releasably retained by a tool holder by using of interacting coupling members, with one of the coupling members being inserted into a cavity of the other coupling member, with radially extending abutment wings of said one coupling member passing respectively between successive support wings of the other coupling member, rotation of the one coupling member resulting in the abutment wings abutting and resting on the support wings, thereby effecting a retaining coupling between said cutting head and said tool holder.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: August 29, 2000
    Assignee: Iscar Ltd.
    Inventor: Gil Hecht
  • Patent number: 6079919
    Abstract: For increasing the tensile force on the draw rod (4) of a tool spindle clamping device, in addition to a first, pretensioned spring assembly (8) between the draw rod (4) and sleeve (1) is a second spring assembly (15), which is coupled in pretension with a fastener (17, 18) between the proximal end of the sleeve (1) and the proximal end of the draw rod (4). In operation, the two spring assemblies (8, 15) act in parallel and lead to a tensile force of approximately 18,000 to 20,000 N with which the cone (7) of a tool (6) fixed to the draw rod (4) is drawn into an internal cone (2) of the sleeve (1). For ejecting the tool (6), the second spring assembly (15) is uncoupled from the draw rod (4) and the draw rod is moved against the distal end of the sleeve (1). For uncoupling the second spring assembly (15) from the draw rod, a hydraulically operated piston (20) is provided at the proximal end of the clamping device.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: June 27, 2000
    Assignee: C.R.I.D. S.A.
    Inventor: Michel Zosi
  • Patent number: 6079716
    Abstract: A removable chuck has a chuck member for holding a drill bit. Also, a mechanism is coupled with the chuck body to retain the chuck body to a drill spindle. The retention mechanism, in a first position, retains the chuck on the drill spindle and in a second position the chuck is enabled to be removed from the spindle.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: June 27, 2000
    Assignee: Black & Decker Inc.
    Inventors: William G. Harman, Jr., Dale K. Wheeler
  • Patent number: 6076441
    Abstract: A tool block and holder for metal working lathes, comprising, a tool block having a tool channel extending therethrough sized to receive snugly a collet holder with a collar at its proximate end serving as a stop against the tool block, and first coolant channel that communicates a fluid coolant from a source external to the tool block to the tool channel at a point beyond the distal end of the collet holder; a collet sized to be received snugly within the collet holder and having a hollow interior and a nose at its proximate end with an opening sized to receive the shank of a metal working tool and having male threads at its distal end; and a draw nut having a proximate end sized to be received snugly within the tool channel, female threads at its proximate end sized to receive the male threads at the distal end of the collet, a flange at the distal end of the draw nut serving as a stop against the tool block, and second coolant channel in fluid communication with the first coolant channel and the hollow int
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: June 20, 2000
    Inventor: Steven R. Billington
  • Patent number: 6071219
    Abstract: A method and apparatus mitigates vibration associated with the rotary cutting machines by providing a first dampening member which is disposed around a tool holder and positioned so as to be compressed intermediate the tool holder and spindle of the rotary cutting machine. A cutting tool is shrink fit to the tool holder. A neck is formed in an elongate shank of cutting tool and has dampening material disposed thereabout. The dampening material disposed around the tool holder, the dampening material disposed around the neck, and the shrink fitting of the cutting tool to the tool holder cooperate so as to minimize undesirable vibration of the cutting tool.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: June 6, 2000
    Inventor: Harold D. Cook
  • Patent number: 6062575
    Abstract: Apparatus and methods for coupling a driving shaft (60) and a mating tool shaft (50, 50') to transmit rotational forces and axial tension and compression between the shafts. The coupler (15) provides for axial tension transmission through tension transmission surfaces (80, 80') spaced-apart from torque (54, 54') and compression (55, 55') transmission surfaces of the mating tool shaft (50, 50'). A separate satefy lock release attachment (17) is preferably removed during tool shaft rotation and can automatically hold the driving shaft (60) stopped when used to release the shaft locking means for a tool change. An optional reversible mechanical interlock (91, 92) further ensures that the driving shaft (60) will remain stopped during a tool change. Malfunction (e.g., improper seating) of the shaft locking means with the attachment ring (70) in place results in a positive visual indication of the malfunction.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: May 16, 2000
    Assignee: Mednext, Inc.
    Inventors: Thomas J. Mickel, Stewart W. Willason
  • Patent number: 6059493
    Abstract: The hand-held machine tool has a tool holder (20) provided with a receptacle (19) into which a shaft portion (15) of a tool (16) is axially insertable. The tool holder (20) has a longitudinal axis (11) and includes a guide device (18) for axially guiding the tool (16); a device (23) for rotary slaving of the tool (16); a retaining device (28) for axially securing the tool (16) and a locking member (34) for locking the retaining device (28) in an open configuration for insertion or removal of the tool (16). The retaining device (28) is located in front of the guide device in an insertion direction of the tool (16) in the tool holder (16). The retaining device (28) is provided with an opening (31) for passage of the tool (16) through it.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: May 9, 2000
    Assignee: Robert Bosch GmbH
    Inventors: Manfred Kirn, Ernst Kraenzler, Klaus Klingenstein, Ernst Dreher, Gerd Hahn, David Matzo, Joerg Ullrich, Joerg Dehde, Karl Garatwa, Joachim Schadow, Christian Hermes, Joerg Moessner
  • Patent number: 6053675
    Abstract: A "snap-in" bit chuck assembly for a rotary hand or powered tool, includes a body having a hex shank at its rearward end, a retraction collar slidably disposed on the body, and an outer retaining collar fixed to the forward end of the body. The body has a coaxial hex socket formed therein to allow a tool bit to be inserted thereinto. A slot is formed in the body, between the outer surface of the body and the internal hex socket. A coil spring surrounds the body, inside the retraction collar, and normally biases the retraction collar forwardly and biases a retaining clip toward the bottom of the angular slot. The retaining clip slides outwardly in the angular slot, against the bias of the coil spring, as the tool bit is inserted, where recess on the shank of the bit is engaged and retained by the clip. The bit is removed by sliding the retraction collar rearwardly, to compress the coil spring and allow the retaining clip to retract back up the slot.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: April 25, 2000
    Assignee: Black & Decker Inc.
    Inventors: Matthew J. Holland, Timothy T. McKenzie, John P. Streich
  • Patent number: 6047971
    Abstract: A removable chuck has a chuck member for holding a drill bit. Also, a mechanism is coupled with the chuck body to retain the chuck body to a drill spindle. The retention mechanism, in a first position, retains the chuck on the drill spindle and in a second position the release mechanism enables the chuck to be removed from the spindle.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: April 11, 2000
    Assignee: Black & Decker Inc.
    Inventors: William G. Harman, Jr., Dale K. Wheeler, William J. Spangler, Jr., Robert H. Gifford
  • Patent number: 6045308
    Abstract: The invention relates to a tool carrier with a coupling end (2) arranged on the tool machine side and a tool holder (9) arranged on the tool side, a surface (16) with a radial projection being provided internally in the coupling end of the tool machine side, which surface is machineable through the opening of the coupling end of the tool machine side. In said surface (16) is/are provided one or several borings (15) for a static and dynamic balancing of the tool machine side coupling end (2) of the tool carrier. Inter alia, this can provide both a static and a dynamic balancing.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: April 4, 2000
    Assignee: Sandvik AB
    Inventors: Peter Frank, Rudi Holland-Moritz, Dietmar Kurschner, Magnus Aspeby
  • Patent number: 6036414
    Abstract: A carriage slide for an electric spindle of a high speed machine tool. A sealed chamber is defined between the surfaces of the slide which contact the spindle. Two ring-shaped seals are arranged between the contact surfaces so that the spindle can be filled with oil. The slide includes three inwardly projecting shoulders which form rings. The first outer shoulder at the inlet of the slide defines a greater opening diameter than the other two shoulders. The slide can be used in high speed machine tools.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: March 14, 2000
    Assignee: Renault Automation
    Inventor: Andre Azema
  • Patent number: 6036416
    Abstract: An apparatus for driving a cutter holder in a machining tool include, a sleeve, a holder carrying rod, a cylinder body unit, a piston rod, and a spring unit. The sleeve and the cylinder body unit are adapted to be disposed on a machine bed, and are spaced apart from each other. The holder carrying rod is movable axially and reciprocally in the sleeve, and is adapted to carry the cutter holder thereon. The piston rod is aligned with the holder carrying rod, and can be activated to reciprocate in the cylinder body unit. When the piston rod moves forward in the cylinder body unit, it impels the holder carrying rod to move forward in the sleeve. When the piston rod moves rearward in the cylinder body unit, a spring unit biases the holder carrying rod to move rearward toward the piston rod. A tongue unit is mounted fixedly on the front end of the cylinder body unit, and engages an annular groove in the sleeve, thereby preventing axial movement of the sleeve relative to the cylinder body unit.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: March 14, 2000
    Inventor: Heng-Tsan Yeh
  • Patent number: 6033162
    Abstract: A bit adaptor has a guide sleeve having a first end and a second end. The first end has an axially extending polygonal receiving member for receiving a screwdriver bit. The second end has an axially extending blind bore for receiving a drill bit. The blind bore has a bottom portion for torsionally engaging a tip of the drill bit. The bottom portion has a support structure for supporting a cutting plate of a tip of the drill bit, wherein the support structure provides at least a linear support for the cutting plate.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: March 7, 2000
    Assignee: Firma DreBo Werkseug-Fabrik GmbH
    Inventors: Klemens Uebele, Klaus Dreps
  • Patent number: 6000888
    Abstract: A pneumatic impact power tool has a tool body with a bit-receiving axial bore in its end surface. A cap is threaded on the end of the tool body and has an end wall spaced from the end surface to define a cavity and a lobed opening in the cavity matably receiving a like-lobed bit shank, the cavity being dimensioned to accommodate the lobes. Spring-biased balls project into the cavity from radial bores in the end cap to engage the shank lobes and bias them to a rotational position non-aligned with the opening lobes to inhibit removal. The cavity is dimensioned to afford a slight axial clearance to accommodate axial movement of the lobes. A cover on the end cap is recessed to receive the bias springs, retaining both the springs and the cover in place. The end cap has a annular channel communicating with an exhaust passage in the tool body and four exhaust ports in the end wall.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: December 14, 1999
    Assignee: Snap-on Tools Company
    Inventor: Robert L. Hartman
  • Patent number: 5988957
    Abstract: A power tool with a quick release tool holder has a spindle with a central bore to receive a tool, a first aperture and second aperture extend into the central bore. A ball is in each of the first apertures. The ball locks the tool against axial movement. An elongated roller is in each of the second apertures. The roller prohibits rotation of the tool within the spindle. A first sleeve is fixed with the spindle. The first sleeve maintains the rollers in the apertures. A biasing member axially biases the rollers. A second sleeve is circumferentially positioned about the spindle and axially movable on the spindle. The second sleeve has a surface in contact with the balls. Also, a biasing member is provided to provide a force on the second sleeve such that the sleeve is moved against the force of the spring to enable insertion or removal of the tool.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: November 23, 1999
    Assignee: Black & Decker Inc.
    Inventor: Thomas J. Wheeler
  • Patent number: 5980170
    Abstract: A new and improved tool driver having a shaft with a longitudinal axis and opposite ends. A boss is secured at one of said shaft ends by which the tool driver is connected to a rotary tool. A tool collate is secured at the other of the shaft ends by which the tool driver may be driven by a surgical hand piece having a chuck in which the collate may be positioned. The boss has a distal end surface with a groove therein. Both the groove and the distal end surface extend transversely of the axis. A pin is positioned in the groove on the axis. A latch mechanism is provided to hold a mounting bar of a rotary tool in the groove on the pin, whereby the rotary tool is held exactly coaxially of the driver during use. The rotary tool which is used with the driver has a bar which has the same dimensions as the groove in the boss of the tool driver of the invention. The bar thus fills the slot and is complementary to the slot. The bar has a hole therein which is complementary to the pin.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: November 9, 1999
    Assignee: Othy, Inc.
    Inventor: Paul E. Salyer
  • Patent number: 5980172
    Abstract: A double cutting spindle unit comprising a main spindle unit and a sub-spindle unit mounted on the main spindle unit and vertically slidable relative to the main spindle unit. The chucking member is normally biased toward its fastening direction by a fastening spring formed by a plurality of spiral belleville springs arranged around the chuck actuating shaft. A two-stage hydraulic cylinder comprising two coaxially arranged cylinders is mounted on a supporting frame arranged on the top cover, and the actuating rod of the hydraulic cylinder is arranged with its free end being opposite to the end of the chuck actuating shaft.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: November 9, 1999
    Assignee: Shoda Iron Works, Ltd.
    Inventor: Hiroshi Shoda
  • Patent number: 5971681
    Abstract: A guard ring having a center bore mounts on a face of a spindle of a machine tool having a taper socket drive, and a bore for receiving and driving a tool holder. A drive between the guard ring and the tool holder engages before a power drawbar of the machine tool spindle engages the tool holder. The guard ring is of an axial length such that the tool holder is within the center bore of the guard ring before the tool holder is driven by the power drawbar of the machine tool.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: October 26, 1999
    Assignee: Kurt Manufacturing Company, Inc.
    Inventors: Ingo E. Wolfe, Roger J. Schroeder
  • Patent number: 5957636
    Abstract: The present invention comprises a quick-change tool system for a collet in alignment with a spindle of a milling machine. The collet comprises an elongated member having a first end of generally conical configuration with a bore arranged longitudinally therein. The collet has a second end for securement to a spindle in the machine. The quick charge tool system comprises a tightenable securement coupling for securing a tool in the collet and also for aligning the collet and a tool within the spindle. Subsequent requirement for re-adjustment of the "Z" axis coordinates of the tool within the collet and with respect to the spindle is eliminated.
    Type: Grant
    Filed: August 15, 1998
    Date of Patent: September 28, 1999
    Inventor: Marc H. Boisvert
  • Patent number: 5957639
    Abstract: A hollow cone device for gripping attachments, essentially constituted by a bit-carrying socket (1) for blocking the member (2) to be fixed, prolonged by a securement element (3) in a support (4), such as a spindle or the like. The securement element is in the form of a screw-threaded element connected to the socket (1) and screwed into the support (4). The bit-carrying socket (1) comprises two radial recesses extending perpendicularly to its axis and in which are mounted two gripping bits (5) actuated simultaneously, to slide radially in a symmetrical manner, by a screw (6) maintained in translation by a stud screw (7) co-acting with a circular throat provided in the central region of the screw (6). An ejector (12) is guided in translation in a bore in the bit-carrying socket (1) and actuated by symmetrical pressure of the bits (5). The device also includes an element (15) for relative angular displacement between the bit-carrying socket (1) and the screw-threaded element.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: September 28, 1999
    Assignee: E.P.B. Emile Pfalzgraf (Societe Anonyme)
    Inventors: Alain Freyermuth, Raymond Tugend
  • Patent number: 5954463
    Abstract: An improved two-ended reversible drill/driver tool for use with Power drills. The tool having a hollow cylindrical socket that at one end has a drive shank for insertion into a chuck of a powered drill, and, at the opposite end, has a polygonally shaped opening therein for receiving a correspondingly shaped, two-ended, reversible tool assembly. This tool assembly is sized to slide within the hollow socket, and has a combined drill bit and countersink at one end, and, at the other end, a polygonally shaped opening for accepting a screw driver bit having a shank with a Polygonal cross section.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: September 21, 1999
    Inventor: Matthew B. Jore
  • Patent number: 5951026
    Abstract: A removable chuck has a chuck member for holding a drill bit. Also, a mechanism is coupled with the chuck body to retain the chuck body to a drill spindle. The retention mechanism, in a first position, retains the chuck on the drill spindle and in a second position the release mechanism enables the chuck to be removed from the spindle.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: September 14, 1999
    Assignee: Black & Decker Inc.
    Inventors: William G. Harman, Jr., Dale K. Wheeler, William J. Spangler, Jr., Robert H. Gifford
  • Patent number: 5938212
    Abstract: An adaptive holder for interconnecting a non-locking bit shaft in a locking bit chuck provides an elongate body having a locking bit shaft at a first end and a chuck connector at the second end. The locking bit shaft is of hexagonal cross-section with an annular fastening groove defined spacedly inward of its outer end. The body is formed of elastically resilient material. The chuck connector provides a second body end defining a hexagonal fastening channel and a threaded external surface operatively carrying an annular collet threaded from its inner end outwardly to a point spacedly distant from its outer end with plural imperfectly formed threads in its outer end portion to cause radially inward motion of the body second end to move along the imperfect threads to releasably fasten a non-locking bit in the channel. The second end portion of the body may define one or more slots extending through the body to the fastening channel to aid radial motion of the body to fasten a bit.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: August 17, 1999
    Inventor: Scott L. Wadsworth
  • Patent number: 5915896
    Abstract: High speed machining of parts is greatly enhanced when the axial alignment between the machining tool, its tool holder assembly, and a tool driver assembly can be precisely maintained, preferably within about one ten thousandths of an inch, in order to achieve the utmost in machining precision in the parts being machined. In order to maintain this desired degree of alignment, the machining tool is mounted in an angularly adjustable holder assembly which mates with a complementary socket that forms a part of the tool driver assembly. The tool holder assembly can also be used to move the tool radially sideways in a rectilinear fashion relative to the tool driver assembly, if desired. The tool holder assembly, besides being able to adjust the alignment of the tool relative to the tool driver assembly, is also operative to securely clamp the tool to the tool driver assembly.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: June 29, 1999
    Assignee: Sikorsky Aircraft Corp.
    Inventors: Jack B. Koczarski, Joseph E. Merola
  • Patent number: 5915892
    Abstract: A thread-cutting chuck for CNC machine technology of rigid tapping, with a clamping means held in a chuck shaft, particularly a collet chuck, for the tap, an accommodating part, which is held in the chuck shaft without clearance in the direction of rotation and, in the axial direction in the tension and compression directions, has a slight axial clearance cushioned by elastomeric connections disposed between the clamping means and the shaft of the chuck.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: June 29, 1999
    Assignee: Emuge-Werk Richard Glimpel Fabrik fuer Praezisionswerkzeuge vormals Moschkau & Glimpel
    Inventors: Helmut Glimpel, Ruediger Watzke
  • Patent number: 5904456
    Abstract: A combination of a drill and a device for securing the drill in a chuck which has a body with a central passage and three slots inclinedly defined in a periphery defining the passage. Three clamping members are inclinedly and movably received in the slots and engaged with an annular member rotatably mounted to the three clamping members. The body has at least one aperture defined radially therethrough which communicates with the passage in which the drill is received which has a plan surface defined in an outer periphery thereof such that a positioning member received in the aperture contacts the plan surface to position the drill in place.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: May 18, 1999
    Inventor: Lu-Meng Chern
  • Patent number: 5876158
    Abstract: A drive collet assembly for an internal thread producing tap. The collet includes a collar that is attached to the stem of the tap using set screws. The collar is received into a recess of the body portion of a drive collet and retained therein using a spring clip. A smaller diameter aperture extends into the body portion above the recess, the aperture receiving a portion of the stem of the tap, the portion has a pair of opposed flats thereon. At least two laterally extending threaded apertures intersect the smaller diameter aperture and each receive a rigid button, a flexible element and a set screw. The set screw can be adjusted to provide a desired breakaway torque which will protect the tap from breakage should an over-torque condition occur. The flexible element will allow the rigid buttons to be forced outwardly so that the drive collet assembly spins freely about the jammed tap, rather than twisting it off.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: March 2, 1999
    Inventor: Russell R. Beiter
  • Patent number: 5870935
    Abstract: A self-locking clamping apparatus is provided for coupling a tool unit to a tool supporter. The clamping apparatus includes a pair of locking spheres, a canister member that is matable with the tool unit and which includes a pair of opposing apertures for admitting the locking spheres, and a lock rod reciprocally movable within the canister member along an axis and having opposing ramp portions for radially moving the locking spheres through the canister apertures into locking engagement with the tool unit. The ramp portions are inclined at a small angle of approximately 5.degree. with respect to the axis of movement of the lock rod to render the lock rod self-locking as a result of stiction between the surfaces of the ramp portions and the locking spheres. The small angle of the ramp portions allows the use of a small, lightweight pneumatic actuator which may be powered by shop air.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: February 16, 1999
    Assignee: Kennametal Inc.
    Inventors: Robert A. Erickson, Horst M. Jager
  • Patent number: 5865578
    Abstract: A spindle assembly has inner and outer coaxial shafts having front and rear ends and extending along a common axis with the inner shaft axially displaceable in the outer shaft, a holding assembly on the front ends adapted to grip a tool or workpiece in an axially forwardly displaced position of the inner shaft relative to the outer shaft, a coupling ring fixed on the rear end of the outer shaft, and an actuator having a piston axially engageable with the rear end of the inner shaft and operable to axially shift the inner shaft in the outer shaft. In accordance with the invention complementarily interengaging formations on the actuator and the coupling ring including a groove and a projection are displaceable between a holding position axially securing the ring on the actuator and a freeing position allowing the ring to be axially separated from the actuator.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: February 2, 1999
    Assignee: Gunter Horst Rohm
    Inventors: Elmar Benedikter, Eugen Hangleiter
  • Patent number: 5853272
    Abstract: A plastic pipe end forming tool to form both inside and outside bevels on a pipe end. An elongated body has a cavity constituting a cylindrical channel. A pair of opposed protrusions extend into the cylindrical channel to form a V-shaped space to receive the pipe end therein and to allow rotation of the pipe in the cylindrical channel and thereby form bevels on the pipe end.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: December 29, 1998
    Assignee: Continental Industries, Inc.
    Inventors: Donald W. Wartluft, David E. Bentley
  • Patent number: 5851091
    Abstract: A tool mount for a tool holder having a tubular collar with an inwardly projecting rim has a shaft centered on an axis and formed with an axially centered main bore having an outer end formed as a seat complementarily engageable around the collar and a transverse bore crossing the main bore. An actuating bolt in the main bore has a head engaged in the collar in the seat and is formed with a transverse bore aligned with the shaft transverse bore. A retaining element is engageable between the bolt head and the holder rim and the bolt is axially displaceable between an inner position pressing the retaining element radially outward into locking engagement with the holder rim and an outer position with the retaining element retracted radially inward out of locking engagement with the holder rim. An ejector sleeve axially displaceable on the bolt in the bore is axially outwardly engageable with the holder collar in the seat.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: December 22, 1998
    Inventor: Klaus-Dieter Klement
  • Patent number: 5836728
    Abstract: A floating reamer holder includes a tool holder coupled to a mounting shank which is receivable in the chuck of the turret of a machine tool. The coupling between the tool holder and shank includes both a fine adjustment which adjusts the float in order to prevent enlargement of the hole being reamed as well, as to reduce chatter and a coarse adjustment, which compensates for misalignment between the turret and axis of the reamer. The coarse adjustment is accomplished by attaching the mounting shank to an adaptor with a pair of threaded bolts, each of which pass through oversized holes through the base of the mounting shank and are threaded into threaded bores in the adaptor. Since the holes are oversized, the mounting shank is radially shiftable with respect to the adaptor to compensate for machine misalignment. Lubricating bores extend completely through the mounting shank and completely through the adaptor so that the float assembly can be lubricated without disassembling the floating reamer holder.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: November 17, 1998
    Assignee: Dana Corporation
    Inventor: Larry L. Zuber
  • Patent number: 5807040
    Abstract: A tool bit chuck for holding a bit (1) with axially extending grooves (2) closed at the ends thereof spaced apart in the axial direction. Latching elements (4) in the form of cylinders are radially displaceable into and out of the grooves (2). The latching elements (4) have an axis of rotation extending transversely of the axis of the receiving sleeve (3) in the chuck, whereby the latching elements (4) act as roll bodies in the event of an axial shift between the bit (1) and the receiving sleeve (3) so that friction which could result in premature wear, is prevented.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: September 15, 1998
    Assignee: Hilti Aktiengesellschaft
    Inventors: Hans-Werner Bongers-Ambrosius, Jorg Eichhorn
  • Patent number: 5807038
    Abstract: 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 second holding member mounted, in use, on the tubular drill bit. The second member has a substantially radial surface thereon for abutment with a surface 31 on the drill bit. The two holding members can be screwed together whereby abutment between the substantially radial surface on the second holding member and the surface on the drill bit urges the tapered end of the tubular drill bit into frictional driving contact with the tapered surface of the driving member.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: September 15, 1998
    Assignee: Xcalibre Equipment Ltd.
    Inventor: Keith Thomas Skinner
  • Patent number: 5797711
    Abstract: A method of securing sheet material to a support by means of a screw threaded fastener having a driving head adapted to drivably cooperate with a driving tool such that operation of the tool causes rotation of the fastener and enables the fastener to be driven into the support. The method is characterized in that a hole is formed through the sheet material by means of a drill bit attached to the driving tool so as to drivably cooperate with that tool in the same manner as the fastener drivably cooperates with the tool. The drill bit is removed from the tool after formation of the hole and is replaced by a fastener which is then driven into the support by the same tool so as to secure the sheet material to the support. The drill bit is characterized in that it has a drilling feature in the form of a substantially flat plate extending outwardly on each of two opposite sides of the rotational axis of the drill bit.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: August 25, 1998
    Assignee: W. A. Deutsher Pty. Ltd.
    Inventors: Mark Doneddu Mulgrave, Frank Tovenati
  • Patent number: 5791364
    Abstract: An inflatable gas pipeline stopper is used for stopping gas flow through pipelines to permit repairs to be made to gas pipelines. For plastic gas pipelines, a tapping tee is attached to the plastic gas pipeline and a gas tight apparatus having a valve is attached to the tee. Thereafter, the plastic gas pipeline can be cut with a pipe cutter that is engaged with a hexagonal head and magnetic attachment to be operated from the exterior of the air tight apparatus. The pipe cutter can be removed from the air tight apparatus and the valve of the air tight apparatus closed to prevent gas from escaping from the pipeline. The inflatable gas pipeline stopper with dual air bags can then be inserted into the plastic gas main, through the air tight apparatus and the tee, to stop the flow of gas through the pipeline. After repairs on the pipeline are complete, the inflatable gas pipeline stopper can be removed, the tee can be stopped, and the air tight apparatus can be removed.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: August 11, 1998
    Assignee: Custom Service Laboratories of N.J., Inc.
    Inventor: Joseph Petrone
  • Patent number: 5788021
    Abstract: An automatic output shaft locking mechanism for electric tools, and particularly a locking mechanism in which the output shaft is driven by electric power and will automatically lock in position when it is turned by an external force, including a retaining end with three equi-angular projections at one end of the output shaft in the tool, and a rotary disk having three equi-angular notches at an outer side. The outer portion of the rotary disk is fitted with a securing ring, and its three notches receive lock rollers respectively. When the retaining end turns, the three projections will push the lock rollers to engage the securing ring so that the output shaft is locked in position.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: August 4, 1998
    Inventor: Feng Chun Tsai
  • Patent number: 5785468
    Abstract: A drill for interchangable use on a screw driver bit. The drill is mounted on shank, the shank having an opening at the end remote from the drill for rapid placement of the shank on and removal of the shank from the screw driver bit locked in the chuck of an electric powered rotating unit to permit drilling a screw hole and then, upon removal of the drill from the screw driver bit using the screw driver bit for installation of a screw. A countersink may be also be mounted on the shank with the drill.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: July 28, 1998
    Inventor: Mark Peritz
  • Patent number: 5782591
    Abstract: 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 it to a key via a threaded fastener. The arbor includes a longitudinal hole formed therethrough having at least first and second concentric passageways of different diameters. The rectangularly shaped key is sized to be operatively received within and set upon shoulders formed by first and second diametrically opposed openings formed through the spindle. The key includes a tapped hole formed centrally, transversely therethrough. The arbor may be inserted into the spindle's bore, and a fastener having an enlarged head and a threaded shaft may be inserted through the arbor's hole with the threaded shaft passing freely through both first and second passageways, and the head passing through the first passageway but not the second.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: July 21, 1998
    Inventor: Daniel Wilkinson, Jr.
  • Patent number: 5779404
    Abstract: An improved two-ended reversible drill/driver tool for use with power drills. The tool having a hollow cylindrical socket that at one end has a drive shank for insertion into a chuck of a powered drill, and, at the opposite end, has a polygonally shaped opening therein for receiving a correspondingly shaped, two-ended, reversible tool assembly. This tool assembly is sized to slide within the hollow socket, and has a combined drill bit and countersink at one end, and, at the other end, a polygonally shaped opening for accepting a screw driver bit having a shank with a polygonal cross section.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: July 14, 1998
    Inventor: Matthew B. Jore
  • Patent number: 5775853
    Abstract: An improved device and method for use in machining a workpiece, which includes a tool body with a machining tool having two machining surface, wherein one of the machining surfaces is being selectively movable between a retracted position and an extended position. A supporting mechanism is sized and configured to substantially restrict movement of the machining tool relative to the tool body while the one machining surface is positioned in the retracted position. Preferably, the supporting mechanism includes an interior surface having a frustoconical-shaped tapered configuration, and the reciprocable machining surface has an engageable surface sized and configured to be frictionally engaged against the interior surface. In a preferred embodiment, the interior surface has an angle relative to the longitudinal axis of the tool body from about 20 to about 50 degrees, and more preferably about 40 degrees.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: July 7, 1998
    Assignee: Makino Inc.
    Inventors: Gary L. Keefer, Stanley C. Weidmer, Kazuyuki Hiramoto, Gregory Aaron Hyatt
  • Patent number: 5769577
    Abstract: An improvement to the art of interchangeable spinning machine tool holders has a horizontal disengagement mechanism. A dove tail assembly is used on a spinning receiver and a drilling tool holder combination. In operation a drill press can remain in position above a workpiece. Then the dove tail can be loosened and the drilling tool holder exchanged with another. When the dove tail is tightened the new drilling tool holder is in the proper machining position.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: June 23, 1998
    Assignee: Lawrence O. Boddy
    Inventor: Lawrence O. Boddy
  • Patent number: 5746549
    Abstract: A metal cutting including a tool head, a cutting plate, and a snap-locking arrangement for securing the cutting plate to the tool head and formed of a projection, extending from the cutting plate or the bottom of the cavity, which is formed in tool head for receiving the cutting plate, into a hole formed, respectively, in the bottom of the tool head cavity or in the cutting plate, and a snap-action locking element located in the hole for engaging the projection and retaining it in the hole.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: May 5, 1998
    Assignee: Mapal Fabrik fur Prazisionswerkzeuge Dr. Kress KG
    Inventors: Dieter Kress, Friedrich Haberle
  • Patent number: 5730562
    Abstract: An article clamping apparatus is designed to compulsorily open the front end portions of divided pieces of a collet and to allow the divided pieces of the collet to securely hold a pull stud of a tool holder. A draw bar is fitted into a spindle of the machine tool, and a support sleeve is disposed to surround the draw bar via the collet. A separator is disposed on the front side of the support sleeve and fixed to the spindle together with the support sleeve. The positioning plates provided on the separator are engaged with slit grooves of the support sleeve and inserted between the divided pieces of the collet. Upon advancement of the draw bar, the divided pieces are advanced, so that the front end slat surfaces of the divided pieces contact the slant surfaces of the collet opening projections provided on the separator so as to compulsorily open the front portions of the divided pieces.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: March 24, 1998
    Assignee: Nikken Kosakusho Works, Ltd.
    Inventors: Masakazu Matsumoto, Yusaku Yamamoto, Hisashi Ide
  • Patent number: 5722805
    Abstract: A drill bit adapter tool is provided having a lock member, sliding member, and spring that are slidably positioned on the tool body. The lock member engages the driver of a drill and thereby holds the adapter tool to the drill. The lock member is disengaged to permit removal of the adapter tool from the driver by moving the sliding member, lock member, and spring relative to the tool body. The adapter tool facilitates convenient and rapid replacement of drill bits or other working pieces.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: March 3, 1998
    Inventor: Brian K. Giffin
  • Patent number: 5722806
    Abstract: A coupling system is provided that includes a male coupling having a cylindrical distal end including a recess that includes follower surfaces, a female coupling having a cylindrical interior for receiving the distal end of the male coupling, and a pair of opposing jaw members movably mounted within the interior and including external cam surfaces for engaging the follower surfaces of the male coupling when the jaw members are radially moved apart, and a drive train for radially and forcefully moving the jaw members apart. The drive train includes a wedging ball that freely floats in recesses between the opposing jaw members, and a drive rod for axially moving the wedging ball into and out of engagement with wedge surfaces located in the interior of the jaw members. The drive rod includes a distal end having a bore for slidably receiving the wedging ball.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: March 3, 1998
    Assignee: Kennametal Inc.
    Inventors: Robert A. Erickson, Anthony L. Barkley
  • Patent number: 5704744
    Abstract: An arrangement for transmitting torque from a chuck (5) in a manually operated tool to a tool bit (1) having an axially extending chuck section (2) insertible into the chuck. The chuck section (2) has axially extending entrainment faces (31) arranged to cooperate with correspondingly shaped torque transmitting faces (6) in the chuck (5). The chuck section (2) is arranged to cooperate with a device (7) in the chuck for retaining the tool bit and affording limited axial displaceability of the bit. The chuck section (2) is formed with at least one recess (4). The device (7) in the chuck includes a locking element (8) engageable in the recess. The locking element (8) is axially and radially displaceable both to a limited extent and the axial displaceability of the tool bit is possible at least in part, by the limited axial displaceability of the locking element (8).
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: January 6, 1998
    Assignee: Hilti Aktiengeschaft
    Inventors: Werner Kleine, Josef Obermeier
  • Patent number: 5704745
    Abstract: A double-ended drill bit having opposed cutting ends of different structural configurations is provided in combination with a sleeve or holder to be received within a drill chuck. The sleeve is provided with a cylindrical body having a top end with a pair of helically-shaped longitudinally extending members in spaced mating relation attached thereto. One cutting end of a drill bit is received within the cylindrical body and the spaced helically-shaped members.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: January 6, 1998
    Assignee: Credo Tool Company
    Inventors: Juergen Wiker, David H. Byrley, Zane Lockhart, Jr., Debbie Ann Newhouse, Gregory A. Phillips