Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
  • B23B31/02—Chucks
  • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
  • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
  • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
  • B23B31/1238—Jaws movement actuated by a nut with conical screw-thread
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
  • B23B31/02—Chucks
  • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
  • B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
  • B23B31/1071—Retention by balls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
  • B25B23/0007—Connections or joints between tool parts
  • B25B23/0035—Connection means between socket or screwdriver bit and tool
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
  • B23B2231/38—Keyless chucks for hand tools
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
  • B23B2231/44—Nose pieces

Definitions

• the present invention relates to a snap-in chuck assembly and a snap-in tool or tool holder for use in the snap-in chuck assembly. More specifically, the present invention is directed to a snap-in chuck assembly having an axially movable or rotatable nose for initiating or releasing gripping of a tool or tool holder received in the chuck assembly and is directed to a tool having a shank, a drill bit, a screwdriver, a Phillips screwdriver or other tool or implement formation at an outer end and a spline formation at an inner end of the shank.
• the invention also relates to a tool drive system for use with the chuck comprising an insert received in the inner bore portion; structure for preventing rotation of the insert relative to the chuck; structure on the insert for engaging an inner end of a tool or tool holder; and a mechanism for holding the tool or tool holder against axial movement relative to the insert.
• a chuck assembly comprising: a chuck body having an outer end portion, an outer periphery and a central axial bore extending at least part way therethrough; said chuck body further having three, substantially equidistantly spaced, generally axially extending, jaw receiving slots which open onto said central bore; mounting means for mounting said chuck assembly onto the outer end of a shaft of a drive mechanism; three axially and radially movable jaws received in respective ones of said axially extending slots; moving means for moving said jaws against the shank of a tool or tool holder or other accessory received in said central bore; a nose collar mounted on the outer end portion of the chuck body; and structure in the central bore for engaging the shank and preventing rotation of the shank relative to the chuck body.
• the outer end portion of the chuck body has at least one radially extending bore therein which extends from the outer periphery of the chuck body inwardly to an opening which opens to the central bore and which has a diameter less than the diameter of the radial bore; at least one ball or detent in the at least one radial bore; urging mechanism for urging the ball or detent into the radial bore and part way through the opening; and releasing mechanism for allowing the ball or detent to move radially outwardly in the radial bore and away from the opening;
• a tool comprising a smooth shank, a tool or implement formation at an outer end of the shank and a spline formation at an inner end of the shank.
• the shank also has a polygonal, e.g., hexagonal, formation thereon and an annular groove in the shank which can be in the area of the polygonal formation.
• a chuck assembly comprising: a chuck body having an outer end portion, an outer periphery and a central bore extending at least partially through said chuck body along a central axis.
• the chuck body further has three, substantially equidistantly spaced, generally axially extending, jaw receiving slots which open onto the central bore and has mounting structure for mounting the chuck assembly onto the outer end of a shaft of a drive mechanism.
• Three axially and radially movable jaws are received in respective ones of the axially extending slots.
• a mechanism for moving the jaws against the shank of a tool or tool holder received in the central bore is provided.
• Drive structure is provided in the central bore for engaging mating drive structure on the shank of a tool or tool holder received in the central bore of the chuck body, whereby the chuck assembly can impart a rotary drive to the tool or tool holder by reason of the mating engagement of the mating drive structures, and whereby axial movement of the shank of the tool or tool holder received in the central bore of the chuck body is inhibited, if not prevented, by the engagement of the jaws with the shank or by the engagement of the at least one detent with the shank received in the central bore or by both engagements.
• a tool drive system for use with a chuck having a throughbore including an outer bore portion for receiving a tool or tool holder and an inner bore portion constructed to receive and be mounted on an outer end of a motor shaft of a power tool.
• the system comprises: an insert received in the inner bore portion; structure for preventing rotation of the insert relative to the chuck; structure on the insert for engaging an inner end of a tool or tool holder; and a mechanism for inhibiting or holding the tool or tool holder or other accessory from axial movement relative to the insert.
• FIG. 2 is a fragmentary side view of the chuck shown in FIG. 1 and is taken along line 2-2 of FIG. 1.
• FIG. 3 is a longitudinal plan view of the chuck similar to the view shown in FIG. 1 but with an outer end portion or nose collar rotated 90°.
• FIG.4 is a sectional view of the nose collar shown in FIG. 3 and is taken along line 4-4 of FIG. 3.
• FIG. 5 is a longitudinal plan view of one embodiment of a drill type tool constructed according to the teachings of the present invention.
• FIG. 6 is a longitudinal plan view of another embodiment of a screwdriver type tool constructed according to the teachings of the present invention.
• FIG. 9 is a longitudinal sectional view of the chuck body shown in FIG. 9 and shows the nose collar moved axially outwardly for placing the detent/ball in a non- restrained position where the detent/ball can move radially outwardly from a central hex bore.
• FIG. 10 is a longitudinal partially sectional view of a chuck body of a third embodiment of a chuck assembly constructed according to the teachings of the present invention and shows a detent/ball in a radially extending bore and an annular groove in the area of the radially extending bore and having a split collar spring based therein for biasing the detent/ball toward the central chuck bore.
• FIG. 11 is a longitudinal side view of a chuck body for one of the embodiments of the chuck assembly disclosed herein with an inner or lower portion broken away to show a spline area of the central chuck bore and a threaded area of the chuck bore.
• FIG. 12 is a longitudinal sectional view of a fourth embodiment of the chuck assembly of the present invention and shows a nose collar on a chuck body similar to the chuck body shown in FIG. 10 with lateral bores in the nose collar adapted to be aligned with radially extending bores in the chuck body.
• FIG. 15 is a plan view of a tool constructed according to the teachings of the present invention which has a smooth shank with an annular groove therein and a spline formation at an inner end thereof.
• FIG. 16 is a plan view of another tool constructed according to the teachings of the present invention which has a shank with a hexagonal portion, an annular groove in the shank in the area of the hexagonal portion and a spline formation at an inner end thereof.
• FIG. 21 is an inner end view of the chuck shown in FIG. 17 and is taken along line 21 -21 of FIG. 17.
• FIG. 22 is an exploded view of another embodiment of a tool drive system of the present invention and includes an insert, a chuck, a tool holder and a tool.
• FIG. 23 is a bottom end view of the tool shown in FIG. 22 and is taken along line 23-23 of FIG. 22.
• FIG. 24 is an outer end view of the tool holder shown in FIG. 22 and is taken along line 24-24 of FIG. 22.
• FIG. 25 is an inner end view of the tool holder shown in FIG. 22 and is taken along line 25-25 of FIG. 22.
• FIG. 26 is an inner end view of the chuck shown in FIG. 22 and is taken along line 26-26 of FIG. 22.
• FIG.27 is an upper end view of the insert shown in FIG. 22 and is taken along line 27-27 of FIG. 22.
• FIG. 28 is an upper end view of the insert shown in FIG. 17 and is taken along line 28-28 of FIG. 17.
• FIG. 29 is an outer end view of the chuck shown in FIG. 28 and shows no intermediate spline portion at the upper end of the inner bore portion.
• FIG. 30 is an outer end view of the chuck shown in FIG's. 17 and 22 with a spline configuration at the upper end of the inner bore portion and is taken along line 30-30 of FIG's. 17 and 22.
• FIG. 32 is an exploded perspective view of another embodiment of the tool drive system of the present invention with a threaded insert.
• FIG. 33 is a bottom end view of the tool shown in FIG. 32 and is taken along line 33-33 of FIG. 32.
• FIG. 34 is an outer end view of the tool holder shown in FIG. 32 and is taken along line 34-34 of FIG. 32.
• FIG. 35 is an inner end view of the tool holder shown in FIG. 32 and is taken along line 35-35 of FIG. 32.
• FIG. 36 is an outer end view of the chuck shown in FIG. 32 without an intermediate spline portion and is taken along line 36-36 of FIG. 32.
• FIG. 37 is an inner end view of the insert shown in FIG. 32 and is taken along line 37-37 of FIG. 32.
• FIG. 38 is an outer end view of the insert shown in FIG. 32 and is taken along line 38-38 of FIG. 32.
• FIG. 39 is an exploded view of another embodiment of the tool drive system of the present invention including an insert, a chuck, a tool holder and a tool.
• FIG. 40 is a vertical sectional view through the insert shown in FIG. 39.
• FIG. 41 is a inner end view of the tool stem shown in FIG. 39 and is taken along line 41 -41 of FIG. 39.
• FIG. 45 is an exploded view of a still further embodiment of the drive system of the present invention including an insert, a chuck, a tool holder and a tool of the present invention.
• FIG. 46 is an outer end view of the tool holder shown in FIG. 45 and is taken along line 46-46 of FIG. 45.
• FIG. 47 is an end view of a screw having an Allen head shown in FIG. 45 and is taken along line 47-47 of FIG. 45.
• FIG. 48 is an inner end view of the tool holder shown in FIG. 45 and is taken along line 48-48 of FIG. 45.
• FIG. 49 is a lower end view of the insert shown in FIG. 45 and is taken along line 49-49 of FIG. 45.
• FIG. 50 is an upper end view of the insert shown in FIG. 45 and is taken along line 50-50 of FIG. 45.
• FIG. 51 is a lower end view of the chuck shown in FIG. 45 and is taken along line 51 -51 of FIG. 45. DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
• FIG. 1 a longitudinal side view of one embodiment of the chuck assembly 10 constructed according to the teachings of the present invention.
• the chuck assembly 10 includes a chuck body 12 and at least three jaws 14, one of which is shown in FIG. 1 , which are movable axially and radially relative to the chuck body 12 into and out of a central chuck hex bore 16.
• Mounted on the chuck body 12 is a sleeve 18 which is rotatable on the chuck body 12 for moving the jaws 14 in and out of the central bore 16.
• the chuck body 12 includes an outer end portion 22 having at least one, and preferably three, transverse radial bores 24 therein which extend through the outer end portion 22 and opening onto the central bore 16 with a. ,. ; ; .. alter opening 26 than the diameter of the radial bore 24.
• a ball 28, similar to a ball bearing, is received in each radial bore 24 and bears against an inner wall 30 of a cylindrical cavity 32 in a nose collar 34.
• the outer end portion 22 most likely will have a reduced outer diameter such that the length of the radial bores 24 is less than the diameter of the ball 28 or a second ball or other spacing element is provided in each bore 24.
• the hex cross-section of the central bore 16 can be limited to the area of the radial bores 24, as shown.
• the nose collar 34 has two spaced apart finger engaging concave pockets or dimples 36 to enable a user to grip the collar 34 and rotate it 90°.
• the inner wall 30 of the cavity 32 in the nose collar 34, FIGS. 3 and 4 has three concave pockets 38 which are located rotationally 120° from each other and one is located 90° from one of the outer pockets 36 or in line with one of the outer pockets 36.
• the outer end portion 22 further has a C-ring 39 mounted on an outer periphery 40 thereof for axially engaging an inwardly extending flange 41 of the nose collar 34, thereby to hold the nose collar 34 to the chuck body 12.
• a stem 44 of the tool 42 has a hex cross-section for mating with the central hex bore 16.
• the tool 42 has a Phillips head 46 and an annular groove 48 which can be moved into alignment with the balls 28 when the nose collar 34 is in the position shown in FIG. 3 where each ball 28 is in line radially within one the radial bores 24 between the opening 26 to the central hex bore 16 and the pocket 38 in the wall 30.
• a user will grip the nose collar 34 with his/her finger and thumb received in the pockets 36 and rotate the nose collar 90° until the pockets 38 on the inner wall 30 of the cavity 32 are aligned with the radial bores 24 so that when one pulls on the tool 42 the balls 28 can move inwardly in the radial bores 28 and into the pockets 38 so that the tool 42 can be removed axially from the central chuck bore 16.
• the stem portion 62 is modified to have a hex in-cross-section area 64 with an annular groove 68 in the hex in-cross-section area 64, whereby the tool holder 60 is adapted to be received in the central hex bore 16 and axially locked therein by balls 28 received in the annular groove 68 and fixed against rotation in the bore by the
• the tool holder 60 further has a mushroom head 70 with a cavity 72 for receiving a tool and a magnet 74 at the bottom of the cavity 72 for releasably holding a tool in the cavity 72.
• the tool holder 60 further includes an inner end 76 which has
• a nose collar 94 is constructed for axial movement as opposed to rotational movement.
• the nose collar 94 has at
• the interior of the nose collar 94 has a stepped cavity 98 including a first cylindrical portion 100 which has a diameter which will fictionally engage the ball or balls 28 in the radial bores 24 for urging them into
• the cavity 98 has a stepped, larger cylindrical portion 102 located inwardly of the cylindrical wall portion 100.
• FIG. 10 there is illustrated a third embodiment of a portion of a chuck assembly 110 constructed according to the teachings of the present invention.
• the outer end portion 112 of a chuck body 1 14 has an annular groove 116 therein in the area of the radial bores 24 so that a C or split ring or band 118 can be received in the annular groove 116 for engaging the radially outwardly facing side of each of the three detents or balls 28 for urging each of them into one of the openings 26 at the inner end of each of the radial bores 24.
• the outer end portion 112 of the chuck body 114 does not have a reduced-in-diameter relative to the rest of the chuck body 114.
• suitable alignment means such as for example, matting axially extending slots in, and a key between, the outer end portion 142 of the chuck body 144 and the cylindrical wall 150 of the cavity 152 in the nose collar 146 is provided for ensuring proper alignment of the nose collar 146 with the chuck body
• FIG. 14 there is illustrated a tool 160 constructed according to the teachings of the present invention.
• the tool 160 is a simplified tool which has a smooth shank 162, a spline configuration 164 at an inner end thereof, a tool formation 166 such as a Phillips screwdriver formation at an outer end thereof.
• This tool 160 is adapted to be simply and quickly inserted into one of the chuck assemblies described above and is rotatably driven by the spline formation 124 engaging with the spline formation 164 at the inner end of the shank 162 while three spring biased balls 28 in one of the chuck assemblies bears against the smooth shank 162 and the friction between the balls 28 and the smooth shank 162 provides a holding force, although minimal, against axial movement of the tool 160 in one of the chuck assembles described above.
• a tool 170 can be provided, as shown in FIG. 15, which has a shank 172, a spline formation 174 at an inner end of the shank 172, a tool formation 176 at an outer end thereof and an annular groove 178 for receiving one or more balls 28.
• the tool 160, 170 or 180, as well as the tools 42 and 50 and the tool holder 60 can be used with any of the chuck assemblies described above and that each tool 160, 170 and 180, as well as the tools 42 and 60 and the tool holder 60 have advantages therein as described above.
• the tool 160 provides a very simple tool which can be pushed either in or out of one of the chuck assemblies described above and minimally held therein against axial movement in the chuck assembly. If movement of the tool 160 is encountered, the user can simply rotate an outer sleeve of the chuck assembly to bring the jaws into engagement with the shank 162, in addition to engagement of the balls or detents 28 with the shank 162.
• the tool 170 or 180 can be used which can be easily and simply inserted into the conventional chuck having the balls or detents 28 mounted therein, as described above, with engagement of the balls 28 in the annular groove 178 or 190 to prevent axial movement of the tool 170 180.
• a tool drive system 210 including a drive insert 212, a conventional chuck 214, a tool holder 216 (which can be a tool) and, where the tool holder is utilized, a tool 218 receivable in the tool holder 216.
• the insert 212 includes a base portion 220 and a projection 222 having structure, such as a spline configuration 224, for engaging mating structure 226 within a cavity 228 at the inner end 229 of a stem 230 of the tool holder 216 (or tool where a tool is inserted directly into the chuck 214 instead of a tool holder 216).
• FIGS. 18, 23, 33 and 41 are bottom end views of the tool 218 which has a base or stem 232 with a hex configuration which is received in a hex shaped cavity 233 in an outer, mushroom shaped head or end portion 234 of the tool holder 216 shown, respectively, in FIG's 17, 22, 32, 39 and 45.
• FIGS. 19, 24, 34, 42 and 46 are outer end views of the tool holder 216 shown in FIGS. 17, 22, 32, 39 and 45.
• FIGS. 20 and 35 are inner end views of the tool holder 216 shown, respectively, in FIGS. 17 and 32.
• the base 220 of the insert 212 has three splines or keys 236, which are adapted to be slidably received in key ways or slots 238 formed in an inner bore portion 240 of the chuck 214, as shown in FIG. 21.
• the insert 212 is inserted into the inner bore portion 240 shown in FIG. 21 where the keys or splines 236 are received in the key ways or slots 238. Then, the chuck 214 is screw threaded on a motor shaft of a power tool (not shown). This can be achieved with a tool that is received overthe spline configuration 224 on the projection 222 of the insert 218 and then rotated.
• the tool holder 216 can be inserted into an outer bore portion 242 in the chuck 214 with the cavity 228 at the inner end 229 of the stem 230 thereof received over the spline configuration 224 on the projection 222 of the insert
• the three key ways or slots 238 need to be cut into the inner bore portion 240 of a conventional chuck 214.
• the insert 212 can be inserted into the inner bore portion 240 in the chuck 214 and a threaded end of a motor shaft of a power tool is screwed into the inner bore portion 240, which is threaded, to mount the chuck 214, with the insert 212 therein, to a motor shaft of a power tool.
• an operator can rotate a portion of the chuck 214 to bring jaws within the chuck 214 into engagement with the shaft or stem 230 of a tool or the tool holder 216 or simply can move a specially configured inner end 229 of a stem or shaft
• a tool drive system 260 including a tool or the tool holder 216 with the tool 218, the tool holder 216 having a mushroom shaped head 234 with a cavity 233 and a stem, shaft or shank 230 extending from the head 234 to a lower, inner free end 262 which has a spline or polygonal shape 264, a chuck 214 and a drive insert 266.
• the drive insert 266 includes a base portion 268 with three keys or splines 270 on the outer periphery thereof and a cavity 272 therein which has a configuration 274 (FIG.
• the inner bore portion 240 of the throughbore of the chuck 214 shown in FIG. 26 has the same configuration as shown in FIG.21 and is adapted to receive the insert 266 shown in FIG. 22.
• FIG. 27 is a top end view of the drive insert 266 shown in FIG. 22 and FIG. 28 is a top end view of the drive insert 212 shown in FIG. 17.
• FIG. 29 is an end view of the lower end of the chuck 214 shown in FIG. 32 without an intermediate spline bore portion 280 and
• FIG. 30 is an end view of the outer end of the chuck 214 shown in FIG's. 17 and 22.
• FIG. 31 is an enlarged view of a conventional chuck 214 showing a throughbore 276 through the chuck 214, a jaw 278 movable into the throughbore 276, a intermediate spline bore portion 280 of the throughbore 276 for receiving a special tool for mounting the chuck 214 on the threaded end of a motor shaft of a power tool and a threaded inner bore portion 240 of the throughbore 276. Also shown is a key way 38 formed in the threaded inner bore portion 240.
• FIG. 32 is an exploded view of another embodiment of a tool drive system 290 of the present invention similar to the tool drive system 210 shown in FIG. 17.
• the tool drive system 290 is shown to include a drive insert -.'A., a chuck 214, a tool holder 216 and a tool 218.
• the end views shown in FIG's. 33, 34 and 35 correspond to the end views shown in FIGS. 18, 19 and 20.
• the drive insert 292 has a threaded cylindrical base portion 294 and a projection 296, corresponding to the projection 222 shown in FIG. 17.
• the insert 292 is threaded into the inner threaded bore portion 240 until it bottoms out and is locked in place after which the chuck 214 is threadably mounted on a threaded motor shaft of a power tool, such as with a socket tool (not shown) which is inserted through the throughbore 276 of the chuck 214 for engaging the projection 296.
• a socket tool (not shown) which is inserted through the throughbore 276 of the chuck 214 for engaging the projection 296.
• the tool holder 216 can be held to the chuck 214 by the magnets 244, shown in FIG. 35.
• the tool holder 216 is then rotatably driven by the engagement of the splined or polygonal shaped projection 296 in the cavity 228 in the inner end 229 of the stem, shaft or shank 230 of the tool holder 214.
• FIG. 39 is an exploded view of still another embodiment of a tool drive system 300 of the present invention.
• a tool holder 216 is provided which has a square- in-cross-section cavity 302 in the inner end 304 of the shank 230 of the tool holder 216 for receiving a square-in-cross section projection 306 of a drive insert 308.
• the insert 308 is similar to the insert 212 shown in FIG. 17, except that the square-in- cross-section projection 306 has a spring biased detent 310 mounted in a transverse slot 312 in the projection 306 as shown in FIG. 40.
• the insert also has a base 312 having three splines or keys 314 for being received in mating key ways 316 formed in the inner bore portion 240 of the throughbore 276 in the chuck 214.
• the spring biased detent 310 provides a mechanical mechanism for holding the tool holder 216, or a tool having a cavity at an inner end thereof, from moving axially relative to the chuck 214.
• the tool holder 216 or tool with a cavity at the inner end thereof has to be forcibly pulled away from the chuck 214 to insert another tool in the chuck 214.
• FIG. 45 illustrates still another embodiment of a tool drive system 320 constructed according to the teachings of the present invention.
• This tool drive system 320 utilizes the tool holder 216 shown in FIG. 22.
• This tool holder 216 has magnets 244 on the underside 246 of the mushroom shaped head 234 and a stem or shaft 230 with an inner end 262 having a spline or polygonal configuration 264.
• a drive insert 322 is inserted into the throughbore 276 of the chuck 214 from the upper end of the chuck 214.
• Such drive can be from the cavity 326 to a specially configured inner end of a tool adapted to be received in the cavity 326.
• a throughbore 328 is provided through the depending projection 328 and opens into the cavity 326 so that a retainer screw 330 having an
• a preferred embodiment of the tool drive system of the present invention includes an insert, such as the insert 292 shown in FIG. 22, which is threadably received into the inner threaded bore portion 240 of the throughbore 276 in the chuck 214 so that the tool drive system does not require any modification to the chuck 214.
• the chuck can be of the type shown in FIG. 31 with an intermediate spline bore portion 280 above the inner threaded bore portion 240 or a chuck without an intermediate spline bore portion 280.
• such insert can utilize the projection shown in FIGS.
• the embodiment just described has a mechanical holding structure instead of a magnetic holding structure for holding the tool or tool holder to the projection of the insert received in the chuck.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Gripping On Spindles (AREA)
• Drilling Tools (AREA)
• Harvester Elements (AREA)

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• 2000
  • 2000-05-24 CN CN 00808066 patent/CN1250367C/zh not_active Expired - Fee Related
  • 2000-05-24 WO PCT/US2000/014319 patent/WO2000071287A1/en active Application Filing
  • 2000-05-24 AU AU48598/00A patent/AU4859800A/en not_active Abandoned
  • 2000-05-24 EP EP00930844A patent/EP1187695A4/de not_active Withdrawn
  • 2000-05-24 JP JP2000619580A patent/JP2003500223A/ja active Pending

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