US20040022598A1 - Facilitated tightening device - Google Patents
Facilitated tightening device Download PDFInfo
- Publication number
- US20040022598A1 US20040022598A1 US10/415,553 US41555303A US2004022598A1 US 20040022598 A1 US20040022598 A1 US 20040022598A1 US 41555303 A US41555303 A US 41555303A US 2004022598 A1 US2004022598 A1 US 2004022598A1
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- Prior art keywords
- bolt
- running
- base
- screw
- guide
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- Abandoned
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- 238000003780 insertion Methods 0.000 claims description 61
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000037431 insertion Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/08—Quickly-detachable or mountable nuts, e.g. consisting of two or more parts; Nuts movable along the bolt after tilting the nut
- F16B37/0807—Nuts engaged from the end of the bolt, e.g. axially slidable nuts
- F16B37/0857—Nuts engaged from the end of the bolt, e.g. axially slidable nuts with the threaded portions of the nut engaging the thread of the bolt by the action of one or more springs or resilient retaining members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/924—Coupled nut and bolt
- Y10S411/929—Thread lock
- Y10S411/935—Cam or cone grip
Definitions
- the present invention relates to a simple fastening device that can be used in various machines, such as construction, electrical, or mechanical equipment, and that can be inserted and clamped by a one-touch operation.
- FIGS. 17 - 19 illustrate this conventional simple fastening device 100 , which comprises a base 110 , running screws 120 , 120 , and a spring 130 consisting of a coil spring.
- a bolt 140 is inserted into the base 110 , and a bolt-insertion hole 150 is opened in the base 110 .
- the bolt-insertion hole 150 that is formed in the base 110 has slope portions 160 , 160 .
- the diameter of the lower parts of the slope portions 160 , 160 of the bolt-insertion hole 150 is made smaller than the diameter of the upper part of the slope portions 160 , 160 of the bolt-insertion hole 150 , and the running screws 120 , 120 are supported on the slope portions 160 , 160 , respectively.
- the running screws 120 , 120 are opposed to each other in a pair, and female screws 121 , 121 that are to be engaged with a male screw 141 of the bolt 140 are formed in a longitudinal direction on the opposed faces of the running screws 120 , 120 .
- tapered faces 122 , 122 that can freely slide on the above-mentioned slope portions 160 , 160 are formed at the bottom of the running screws 120 , 120 .
- a spring 130 is inserted into the base 110 in a manner so as to pressurize a pair of the opposed running screws 120 , 120 from above.
- a cover 170 is fixed on the top end of the base 110 by pressure fitting.
- this conventional simple fastening device 100 has a shortcoming that the insertion of the bolt 140 can cause the running screws 120 , 120 to become inclined or to slip down in the base 110 .
- FIG. 19 shows such a situation where the running screws 120 , 120 slip down.
- the top portions of the running screws 120 , 120 are inclined in a manner so as to approach or lean toward each other (as shown by the arrows), or to slip down.
- Such a displacement causes the bolt 140 to be hooked by the running screws 120 , 120 when the bolt 140 is inserted, which makes one-touch fastening of the bolt 140 difficult.
- the present invention has been made in consideration of the above problems with a conventional simple fastening device, and one object of the present invention is to provide a simple fastening device that makes it possible to smoothly insert a bolt while preventing the inclination or slipping down of the running screws at the time that the bolt is inserted, and thereby makes it possible to perform fastening by a one-touch operation.
- the invention set forth in claim 1 is a simple fastening device wherein running screws are supported by slope portions formed on the sides of a bolt-insertion hole of a base, and a bolt is inserted in the bolt-insertion hole while the running screws are pressed by a pressing member, so that the running screws are engaged with the bolt.
- the invention set forth in claim 1 is also characterized such that a guide means is engaged with said running screws to prevent the running screws from slipping down in the base.
- the invention set forth in claim 2 comprises (1) a base, to which are formed (a) a bolt-insertion hole, whose one portion is a bolt-receiving face, and (b) a slope portion, whose diameter is gradually reduced toward the bolt-insertion side under a condition that it connects with the bolt-insertion hole, (2) a running screw, which slides along said slope portion and is engaged with the bolt as the bolt to be inserted moves in an axial direction, (3) pressing members for pressing the running screw downward, and (4) a guide means that engages with the running screw and prevents the running screw from slipping down in the base.
- a guide means is engaged with the running screw, as a result of which the running screw will not become inclined or slip down, so that the bolt can be smoothly inserted without being hooked by the running screw, as with the case of the invention set forth in claim 1.
- the invention set forth in claim 3 comprises (1) a base, to which formed are (a) a bolt-insertion hole, and (b) a plurality of slope portions, whose diameters are gradually reduced toward the bolt-insertion side under the condition that the bolt is inserted into the bolt-insertion hole, (2) a plurality of running screws that slide along the slope portions and are engaged with the bolt as the inserted bolt moves in an axial direction, (3) a pressing member for pressing the running screws downward, and (4) a guide means that engages with the running screws and prevents the running screws from slipping down in the base.
- a guide means is engaged with the running screw, as a result of which the running screw will not become inclined or slip down, so that the bolt can be smoothly inserted without being hooked by the running screw, as with the cases mentioned above.
- the invention set forth in claim 4 is an invention described in any of claims 1 to 3, and is characterized in that said guide means comprises (1) a guide projection that is provided to the base in a manner so as to project toward the bolt-insertion side, and (2) a guide groove that is formed on said running screw so as to engage with the guide projection.
- a guide means can be formed easily because of a simple structure that comprises the guide groove and the guide projection.
- the invention set forth in claim 5 is an invention as described in claim 4, and is characterized such that a cover, into which said bolt can be inserted, is attached on the base in its downstream side of the bolt-insertion direction, and said guide projection is provided on the cover.
- the guide projection is formed on a cover that is separate from the base, the guide projection can be formed easily.
- the invention set forth in claim 6 is an invention as described in claim 4 or claim 5, and is characterized such that said guide projection has a guide face, which is inclined in the same direction as a sliding direction of said running screw, and that the guide face is engaged with said guide groove.
- the guide face is formed in a manner so as to become inclined along the sliding direction of the running screw, the running screw can be surely prevented from being inclined or slipping down at the time of sliding.
- FIG. 1 illustrates Embodiment 1 of the present invention, a plan view of which is shown by (a), a vertical cross-sectional view of which is shown by (b), and a bottom view of which is shown by (c).
- FIG. 2( a ) is a plan view of a base of the present invention
- FIG. 2( b ) is a vertical cross-sectional view thereof
- FIG. 3( a ) is a front view of a running screw
- FIG. 3( b ) is a plan view thereof
- FIG. 3( c ) is a vertical cross-sectional view thereof
- FIG. 3( d ) is a bottom view thereof
- FIG. 4( a ) is a vertical cross-sectional view of a cover
- FIG. 4( b ) is a plan view thereof
- FIG. 5 is a cross-sectional view showing the condition before a bolt is inserted in Embodiment 1.
- FIG. 6 is a cross-sectional view showing a condition when a bolt is about to be inserted in Embodiment 1.
- FIG. 7 is a cross-sectional view showing the condition when a bolt is being inserted in Embodiment 1.
- FIG. 8 is a cross-sectional view showing the condition after a bolt has been inserted in Embodiment 1.
- FIG. 9 is a cross-sectional view showing the condition that the bolt is being pulled out of Embodiment 1.
- FIG. 10 illustrates Embodiment 2 of the present invention, a plan view of which is shown by (a), a vertical cross-sectional view of which is shown by (b), and a bottom view of which is shown by (c).
- FIG. 11 (a) is a vertical cross-sectional view of a cover in Embodiment 2, and FIG. 11 (b) is a plan view thereof
- FIG. 12 is a cross-sectional view showing the condition before a bolt is inserted in Embodiment 3.
- FIG. 13 is a cross-sectional view showing the condition when a bolt is about to be inserted in Embodiment 3.
- FIG. 14 is a cross-sectional view showing the condition when a bolt is being inserted in Embodiment 3.
- FIG. 15 is a cross-sectional view showing the condition after the bolt has been inserted in Embodiment 3.
- FIG. 16 is a cross-sectional view showing the condition when the bolt is being pulled out of Embodiment 3.
- FIG. 17 is a cross-sectional view showing a conventional simple fastening device.
- FIG. 18 is a cross-sectional view showing the condition when a bolt is about to be inserted into the conventional simple fastening device.
- FIG. 19 is a cross-sectional view showing downward of the running screws in conventional simple fastening device.
- FIGS. 1 - 9 illustrate Embodiment 1 of the present invention and, as shown by FIG. 1, a simple fastening device 1 comprises a base 2 , a running screw 2 , a cover 4 , and a spring piece 5 .
- a bolt 6 (FIGS. 5 - 9 ) is inserted into the base 2 , and a bolt-insertion hole 7 penetrates through the base in an axial direction as shown by FIG. 2.
- a bolt-insertion face, into which the bolt 6 is inserted, is illustrated as 2 a in FIG. 1.
- a moving groove 2 b is formed inside the base 2 .
- the moving groove 2 b is designed in such a manner that a below-described running screw 3 moves therein, and the moving groove 2 b is formed in such a way that the diameter of the bolt-insertion hole 7 varies in a prescribed way.
- a slope portion 8 is formed on the side of the bolt-insertion face 2 a of the moving groove 2 b.
- the slope portion 8 is formed into a conical shape whose diameter is gradually reduced toward the bolt-insertion face 2 a , in a manner so as to match the bolt-insertion hole 7 .
- the slope portion 8 supports the running screw 3 in such a way that the running screw 3 can slide, and the slope portion 8 is formed into a shape that fits along the outer profile of the running screw 3 . Accordingly, when the running screw 3 moves along the slope portion 8 , a female screw 3 a (which will be described later and which is shown in FIGS. 1 ( a ), ( b ), and ( c ) and in FIGS. 3 ( b ), ( c ), and ( d )) of the running screw 3 that engages with the outer surface of the bolt 6 moves in a horizontal direction.
- the inner face of the bolt-insertion hole 7 which is opposed to the moving groove 2 b (the running screw 3 ), is an arc-shaped bolt-receiving face 9 having approximately the same curvature as that of the bolt 6 .
- the bolt-receiving face 9 receives the reaction force generated when the running screw 3 is engaged with the bolt 6 , thereby securely fastening the bolt 6 .
- a cover-attaching concavity 2 c is formed on the end face of the base 2 on the opposite side of the bolt-insertion face 2 a .
- the cover-attaching concavity 2 c is formed in a noncircular shape and, in this embodiment, it is formed into a noncircular shape with parallel cuts on two sides.
- the base 2 in this embodiment is molded so as to have a hexagonal nut-like outer profile, but it is not limited to this shape, and it can also be formed into other shapes.
- the running screw 3 has a split shape that is obtained by splitting a circular column shape into plural pieces along the direction of its diameter.
- a female screw 3 a that engages with a male screw 6 a on the outer surface of the bolt 6 .
- a slide face 3 b which is formed into a conical tapered shape and which slides on the slope portion 8 , is formed at the bottom of the running screw 3 .
- one running screw 3 is used, and it is inserted in the base 2 in a manner so that the female screw 3 a of the running screw 3 is opposed to the bolt-receiving face 9 , in order to fasten the bolt 6 between the running screw 3 and the bolt-receiving face 9 .
- the cover 4 is fit into the cover-attaching concavity 2 c of the base 2 so as to close the face that is opposite to the bolt-insertion face 2 a of the base 2 .
- the cover 4 as shown in FIG. 4, is formed into a noncircular outer profile that is similar to that of the cover-attaching concavity 2 c , and an insertion hole 4 a , through which the bolt 6 penetrates, is formed at the center of the cover 4 .
- the cover 4 clamps the end face of the base 2 and is thereby affixed to the base 2 .
- a spring piece 5 and a guide projection 10 that constitutes a guide means are formed on such a cover 4 .
- One part of the cover 4 is bent toward the side of the base 2 , so that elasticity is given to the spring piece 5 .
- the spring piece 5 acts as a pressing means for pressing the running screw 3 , which is inserted in the base 2 , downward.
- the spring piece 5 is integrated with the cover 4 , and the number of parts that constitute a simple fastening device is reduced, resulting in easy assembly, which is advantageous.
- the guide projection 10 is formed on the cover 4 on the side of the spring piece 5 .
- the guide projection 10 is formed in a manner so as to project toward the base 2 (the insertion side of the bolt 6 ) from both sides of the spring piece 5 .
- the guide projection 10 is formed into a triangular piece that protrudes downward, and it has a guide face 10 a that is inclined in the same direction as the slope portion 8 of the above-mentioned base 2 .
- Guide grooves 11 constituting a guide means, together with the guide projections 10 , are formed on the running screws 3 . As shown in FIG. 3, the guide grooves 11 are provided on both sides of the top face of the running screw 3 and are engaged with the guide projections 10 . This engagement of the guide projections 10 and the guide grooves 11 prevent the running screw 3 from slipping down.
- FIGS. 5 - 9 illustrate the action of this embodiment.
- a running screw 3 is inserted into the moving groove 2 b of the base 2 in a manner so that a female screw 3 a is opposed to the bolt-receiving face 9 of the bolt-insertion hole 7 .
- the running screw 3 is supported by the slope portion 8 .
- both ends of the running screw 3 which are perpendicular to the axial direction of the running screw 3 , are brought into contact with and fastened to the inner face of the base 2 , and thus the running screw 3 is prevented from falling out of the base 2 .
- both ends of the running screw 3 which are perpendicular to the axial direction of the running screw 3 , protrude inside the bolt-insertion hole 7 (see FIG. 1).
- the bolt 6 is formed in an upright fashion from an unfastened member (not shown), and when the simple fastening device 1 is made to approach the bolt 6 , the bolt 6 is inserted into the bolt-insertion hole 7 of the base 2 from the side of the bolt-insertion face 2 a . As shown in FIG. 6, due to this insertion, the bolt 6 pushes up the running screw 3 . As shown in FIG. 7, due to this pushing up, the running screw 3 slides upwards along the slope portion 8 , and the running screw 3 moves upward.
- the guide projections 10 of the cover 4 are engaged with the guide grooves 11 of the running screw 3 .
- the guide face 10 a of the guide projection 10 slides in the guide groove 11 so as to achieve such an engagement.
- the guide face 10 a is inclined in the same direction as the slope portion 8 of the base 2 , so that the guide projection 10 prevents the running screw 3 from displacement, namely from slipping down or being inclined, toward the bolt-insertion hole 7 .
- the bolt 6 is smoothly inserted in the base 2 without being hooked by the running screw 3 .
- the guide grooves 11 are formed on both sides of the running screw 3 , and engaged with the guide projections 10 , respectively, so that the running screw 3 can be prevented from slipping down or being inclined.
- FIG. 8 illustrates the condition after the bolt 6 has been inserted into the base 2 , in which the spring piece 5 of the cover 4 elastically presses the top end of the running screw 3 and presses the running screw 3 downward. Due to this pressing, the running screw 3 moves downward along the slope portion 8 , and the female screw 3 a is engaged with the male screw 6 a of the bolt 6 . Due to this engagement, the bolt 6 is bought into contact with the bolt-receiving face 9 of the bolt-insertion hole 7 , and the bolt-receiving face 9 receives the reaction force of the engagement. As a result, the running screw 3 can fasten the bolt 6 without loosening.
- FIG. 9 illustrates the condition when the inserted bolt 6 has been returned slightly downward, and the female screw 3 a of the running screw 3 is engaged with the male screw 6 a of the bolt 6 .
- the guide projections 10 which constitute a guide means, and the guide grooves 11 are engaged with each other so as to prevent slipping down or inclination of the running screw 3 , and thus the bolt 6 can be smoothly inserted without being hooked by the running screw 3 . Thereby, fastening can be surely performed by one-touch insertion. Also, in this embodiment, because the spring piece 5 is integrated with the cover 4 , the number of parts can be reduced, and the entire axial length of the device can be shortened.
- FIGS. 10 and 11 illustrate Embodiment 2 of the present invention.
- a moving groove 2 b which has a slope portion 8 , is formed opposite to both sides of the bolt-insertion hole 7 .
- a pair of running screws 3 are supported by the slope portion 8 in such a way that the running screws 3 face each other.
- a pair of the running screws 3 are inserted in the base 2 in such a way that the female screws 3 a face each other.
- Guide grooves 11 are formed on the top faces of the running screws 3 and, as shown in FIG. 11, the guide projections 10 to be engaged with the guide grooves 11 are formed on the cover 4 in such a way that the number of the guide protrusions 10 equals the number of running screws 3 . Furthermore, the spring pieces 5 for pressing each of the running screws 3 downward are formed at positions of the cover 4 that correspond to the running screws 3 .
- FIGS. 12 - 16 illustrate Embodiment 3 of the present invention.
- a spring-accommodating groove 12 is formed at the end opposite to the bolt-insertion face 2 a of the base 2 .
- the spring-accommodating groove 12 is formed so as to have a predetermined length in the axial direction of the base 2 , so that a coil spring 13 can be partially inserted therein.
- Guide projections 10 which are to be engaged with the guide grooves 11 of the running screws 3 , are formed on the cover 4 .
- the guide projection 10 projects from the cover 4 in an upright fashion on the bolt-insertion face 2 a of the base 2 , in the condition that the guide projection 10 has the guide face 10 a so as to be engaged with the guide groove 11 of the running screw 3 .
- FIGS. 12 and 13 illustrate the condition before a bolt is inserted into the base 2 in this embodiment
- FIG. 14 illustrates the condition while a bolt is being inserted
- FIG. 15 illustrates the condition after a bolt has been inserted
- FIG. 16 illustrates the condition when the bolt 6 is returned slightly downward and the female screw 3 a of the running screw 3 is engaged with the male screw 6 a of the bolt 6 .
- the running screw 3 moves upward along the slope portion 8 . Because the guide projection 10 of the cover 4 is engaged with the guide groove 11 of the running screw 3 , the running screw 3 can be prevented from inclining or slipping down.
- the coil spring 13 presses the running screw 3 downward, the female screw 3 a of the running screw 3 can be engaged with the bolt 6 .
- the bolt-receiving face 9 of the bolt-insertion hole 7 receives the reaction force from this engagement, the bolt 6 can be securely fastened.
- the present invention is not limited to the above embodiments, and it can be implemented in various ways.
- the cover 4 can be omitted from the base 2 .
- the running screw 3 can be prevented from inclining or slipping down by forming the guide projection 10 at a portion of the base 2 that faces the running screw 3 . Also, when a plurality of running screws 3 are provided, more than one pair can be provided.
- a guide means can be formed easily.
Abstract
A facilitated tightening device allowing a bolt to be inserted smoothly by preventing a screw block engaged with the bolt from being inclined or fallen down, comprising a base (2) having a bolt insert hole (7) partly forming a bolt receiving surface (9) and an inclined surface (8) gradually decreasing in diameter toward the insert side of the bolt (6) in the state of being continued with the bolt insert hole (7) formed therein, a screw block (3) slid along the inclined surface (8) according to the axial movement of the inserted bolt (6) to be engaged with the bolt (6), an energizing member (5) energizing the screw block (3) in inner radial direction, and guide means (10, 11) engaged with the screw block (3) to prevent the screw block (3) from being fallen down in the base (2).
Description
- 1. Field of the Invention
- The present invention relates to a simple fastening device that can be used in various machines, such as construction, electrical, or mechanical equipment, and that can be inserted and clamped by a one-touch operation.
- 2. Background of the Invention
- Conventionally, there is a simple fastening device that can be inserted and clamped by a one-touch operation; this is described in Japanese Examined Utility Model Publication No. S55-48171. FIGS.17-19 illustrate this conventional
simple fastening device 100, which comprises abase 110, runningscrews spring 130 consisting of a coil spring. - A
bolt 140 is inserted into thebase 110, and a bolt-insertion hole 150 is opened in thebase 110. The bolt-insertion hole 150 that is formed in thebase 110 hasslope portions slope portions insertion hole 150 is made smaller than the diameter of the upper part of theslope portions insertion hole 150, and the runningscrews slope portions - The running
screws female screws male screw 141 of thebolt 140 are formed in a longitudinal direction on the opposed faces of the runningscrews tapered faces slope portions screws - A
spring 130 is inserted into thebase 110 in a manner so as to pressurize a pair of the opposed runningscrews spring 130 can pressurize the runningscrews cover 170 is fixed on the top end of thebase 110 by pressure fitting. - In such a structure, by mounting the
cover 170 onto thebase 110 with thespring 130 flexed to some degree, the runningscrews insertion hole 150. As shown in FIG. 18, thebolt 140 is inserted in thebase 110 from the bolt-insertion hole 150, so that the runningscrews slope portions spring 130, and thus the bolt can be inserted between the runningscrews female screws screws bolt 140 due to the spring force of thespring 130, and thus thebolt 140 can be fastened by a one-touch operation. - However, this conventional
simple fastening device 100 has a shortcoming that the insertion of thebolt 140 can cause the runningscrews base 110. FIG. 19 shows such a situation where the runningscrews bolt 140 pushes up the runningscrews screws bolt 140 to be hooked by the runningscrews bolt 140 is inserted, which makes one-touch fastening of thebolt 140 difficult. - The present invention has been made in consideration of the above problems with a conventional simple fastening device, and one object of the present invention is to provide a simple fastening device that makes it possible to smoothly insert a bolt while preventing the inclination or slipping down of the running screws at the time that the bolt is inserted, and thereby makes it possible to perform fastening by a one-touch operation.
- For the aforementioned purpose, the invention set forth in
claim 1 is a simple fastening device wherein running screws are supported by slope portions formed on the sides of a bolt-insertion hole of a base, and a bolt is inserted in the bolt-insertion hole while the running screws are pressed by a pressing member, so that the running screws are engaged with the bolt. The invention set forth inclaim 1 is also characterized such that a guide means is engaged with said running screws to prevent the running screws from slipping down in the base. - Under such a structure, by inserting the bolt into the bolt-insertion hole, the running screws are engaged and fastened with the bolt. According to the present invention, a guide means is engaged with the running screws, as a result of which the running screws will not become inclined or slip down, so that the bolt can be smoothly inserted without being hooked by the running screws.
- The invention set forth in
claim 2 comprises (1) a base, to which are formed (a) a bolt-insertion hole, whose one portion is a bolt-receiving face, and (b) a slope portion, whose diameter is gradually reduced toward the bolt-insertion side under a condition that it connects with the bolt-insertion hole, (2) a running screw, which slides along said slope portion and is engaged with the bolt as the bolt to be inserted moves in an axial direction, (3) pressing members for pressing the running screw downward, and (4) a guide means that engages with the running screw and prevents the running screw from slipping down in the base. - Under such a structure, when the bolt is inserted into the bolt-insertion hole, the running screw slides along the slope portion, so that the bolt can be introduced between the running screw and the bolt-receiving face. The running screw engages with the introduced bolt due to the pressure of the pressing member. A reaction force that is generated at this time is received by the bolt-receiving face, and therefore the bolt can be securely fastened.
- According to the invention set forth in
claim 2, a guide means is engaged with the running screw, as a result of which the running screw will not become inclined or slip down, so that the bolt can be smoothly inserted without being hooked by the running screw, as with the case of the invention set forth inclaim 1. - The invention set forth in
claim 3 comprises (1) a base, to which formed are (a) a bolt-insertion hole, and (b) a plurality of slope portions, whose diameters are gradually reduced toward the bolt-insertion side under the condition that the bolt is inserted into the bolt-insertion hole, (2) a plurality of running screws that slide along the slope portions and are engaged with the bolt as the inserted bolt moves in an axial direction, (3) a pressing member for pressing the running screws downward, and (4) a guide means that engages with the running screws and prevents the running screws from slipping down in the base. - Under such a structure, when the bolt is inserted into the bolt-insertion hole, a plurality of the running screws slide along the slope portion, so that the bolt can be introduced between the running screws. Furthermore, because a plurality of the running screws engage with the bolt due to the pressure of a pressing member, the bolt can be securely fastened.
- According to this invention, a guide means is engaged with the running screw, as a result of which the running screw will not become inclined or slip down, so that the bolt can be smoothly inserted without being hooked by the running screw, as with the cases mentioned above.
- The invention set forth in
claim 4 is an invention described in any ofclaims 1 to 3, and is characterized in that said guide means comprises (1) a guide projection that is provided to the base in a manner so as to project toward the bolt-insertion side, and (2) a guide groove that is formed on said running screw so as to engage with the guide projection. - Under such a structure, the guide projection is engaged with the guide groove of the running screw, which slides due to insertion of the bolt, so that the running screws can be prevented from being inclined or slipping down. According to this invention, a guide means can be formed easily because of a simple structure that comprises the guide groove and the guide projection.
- The invention set forth in
claim 5 is an invention as described inclaim 4, and is characterized such that a cover, into which said bolt can be inserted, is attached on the base in its downstream side of the bolt-insertion direction, and said guide projection is provided on the cover. - According to this invention, since the guide projection is formed on a cover that is separate from the base, the guide projection can be formed easily.
- The invention set forth in
claim 6 is an invention as described inclaim 4 orclaim 5, and is characterized such that said guide projection has a guide face, which is inclined in the same direction as a sliding direction of said running screw, and that the guide face is engaged with said guide groove. - Thus, because the guide face is formed in a manner so as to become inclined along the sliding direction of the running screw, the running screw can be surely prevented from being inclined or slipping down at the time of sliding.
- FIG. 1 illustrates
Embodiment 1 of the present invention, a plan view of which is shown by (a), a vertical cross-sectional view of which is shown by (b), and a bottom view of which is shown by (c). - FIG. 2(a) is a plan view of a base of the present invention, and FIG. 2(b) is a vertical cross-sectional view thereof
- FIG. 3(a) is a front view of a running screw, FIG. 3(b) is a plan view thereof, FIG. 3(c) is a vertical cross-sectional view thereof, and FIG. 3(d) is a bottom view thereof
- FIG. 4(a) is a vertical cross-sectional view of a cover, and FIG. 4(b) is a plan view thereof
- FIG. 5 is a cross-sectional view showing the condition before a bolt is inserted in
Embodiment 1. - FIG. 6 is a cross-sectional view showing a condition when a bolt is about to be inserted in
Embodiment 1. - FIG. 7 is a cross-sectional view showing the condition when a bolt is being inserted in
Embodiment 1. - FIG. 8 is a cross-sectional view showing the condition after a bolt has been inserted in
Embodiment 1. - FIG. 9 is a cross-sectional view showing the condition that the bolt is being pulled out of
Embodiment 1. - FIG. 10 illustrates
Embodiment 2 of the present invention, a plan view of which is shown by (a), a vertical cross-sectional view of which is shown by (b), and a bottom view of which is shown by (c). - FIG. 11 (a) is a vertical cross-sectional view of a cover in
Embodiment 2, and FIG. 11 (b) is a plan view thereof - FIG. 12 is a cross-sectional view showing the condition before a bolt is inserted in
Embodiment 3. - FIG. 13 is a cross-sectional view showing the condition when a bolt is about to be inserted in
Embodiment 3. - FIG. 14 is a cross-sectional view showing the condition when a bolt is being inserted in
Embodiment 3. - FIG. 15 is a cross-sectional view showing the condition after the bolt has been inserted in
Embodiment 3. - FIG. 16 is a cross-sectional view showing the condition when the bolt is being pulled out of
Embodiment 3. - FIG. 17 is a cross-sectional view showing a conventional simple fastening device.
- FIG. 18 is a cross-sectional view showing the condition when a bolt is about to be inserted into the conventional simple fastening device.
- FIG. 19 is a cross-sectional view showing downward of the running screws in conventional simple fastening device.
- Embodiments illustrating the present invention will be described in detail as follows. In each embodiment, the same reference number is used to refer to a given part that is found in one or more of the embodiments.
- (Embodiment 1)
- FIGS.1-9 illustrate
Embodiment 1 of the present invention and, as shown by FIG. 1, asimple fastening device 1 comprises abase 2, a runningscrew 2, acover 4, and aspring piece 5. - A bolt6 (FIGS. 5-9) is inserted into the
base 2, and a bolt-insertion hole 7 penetrates through the base in an axial direction as shown by FIG. 2. A bolt-insertion face, into which thebolt 6 is inserted, is illustrated as 2 a in FIG. 1. A movinggroove 2 b is formed inside thebase 2. The movinggroove 2 b is designed in such a manner that a below-described runningscrew 3 moves therein, and the movinggroove 2 b is formed in such a way that the diameter of the bolt-insertion hole 7 varies in a prescribed way. Aslope portion 8 is formed on the side of the bolt-insertion face 2 a of the movinggroove 2 b. - The
slope portion 8 is formed into a conical shape whose diameter is gradually reduced toward the bolt-insertion face 2 a, in a manner so as to match the bolt-insertion hole 7. Theslope portion 8 supports the runningscrew 3 in such a way that the runningscrew 3 can slide, and theslope portion 8 is formed into a shape that fits along the outer profile of the runningscrew 3. Accordingly, when the runningscrew 3 moves along theslope portion 8, afemale screw 3 a (which will be described later and which is shown in FIGS. 1(a), (b), and (c) and in FIGS. 3(b), (c), and (d)) of the runningscrew 3 that engages with the outer surface of thebolt 6 moves in a horizontal direction. - In this embodiment, the inner face of the bolt-
insertion hole 7, which is opposed to the movinggroove 2 b (the running screw 3), is an arc-shaped bolt-receivingface 9 having approximately the same curvature as that of thebolt 6. The bolt-receivingface 9 receives the reaction force generated when the runningscrew 3 is engaged with thebolt 6, thereby securely fastening thebolt 6. - A cover-attaching
concavity 2 c is formed on the end face of thebase 2 on the opposite side of the bolt-insertion face 2 a. The cover-attachingconcavity 2 c is formed in a noncircular shape and, in this embodiment, it is formed into a noncircular shape with parallel cuts on two sides. Furthermore, thebase 2 in this embodiment is molded so as to have a hexagonal nut-like outer profile, but it is not limited to this shape, and it can also be formed into other shapes. - As shown in FIG. 3, the running
screw 3 has a split shape that is obtained by splitting a circular column shape into plural pieces along the direction of its diameter. On the surface that is opposed to the bolt-receivingface 9 of the bolt-insertion hole 7, there is formed afemale screw 3 a that engages with amale screw 6 a on the outer surface of thebolt 6. Also, aslide face 3 b, which is formed into a conical tapered shape and which slides on theslope portion 8, is formed at the bottom of the runningscrew 3. In this embodiment, one runningscrew 3 is used, and it is inserted in thebase 2 in a manner so that thefemale screw 3 a of the runningscrew 3 is opposed to the bolt-receivingface 9, in order to fasten thebolt 6 between the runningscrew 3 and the bolt-receivingface 9. - The
cover 4 is fit into the cover-attachingconcavity 2 c of thebase 2 so as to close the face that is opposite to the bolt-insertion face 2 a of thebase 2. Thecover 4, as shown in FIG. 4, is formed into a noncircular outer profile that is similar to that of the cover-attachingconcavity 2 c, and aninsertion hole 4 a, through which thebolt 6 penetrates, is formed at the center of thecover 4. After thecover 4 is fit into the cover-attachingconcavity 2 c of thebase 2, thecover 4 clamps the end face of thebase 2 and is thereby affixed to thebase 2. Aspring piece 5 and aguide projection 10 that constitutes a guide means are formed on such acover 4. - One part of the
cover 4 is bent toward the side of thebase 2, so that elasticity is given to thespring piece 5. Thespring piece 5 acts as a pressing means for pressing the runningscrew 3, which is inserted in thebase 2, downward. Thus, thespring piece 5 is integrated with thecover 4, and the number of parts that constitute a simple fastening device is reduced, resulting in easy assembly, which is advantageous. - The
guide projection 10 is formed on thecover 4 on the side of thespring piece 5. In this embodiment, theguide projection 10 is formed in a manner so as to project toward the base 2 (the insertion side of the bolt 6) from both sides of thespring piece 5. In this way, theguide projection 10 is formed into a triangular piece that protrudes downward, and it has aguide face 10 a that is inclined in the same direction as theslope portion 8 of the above-mentionedbase 2. -
Guide grooves 11 constituting a guide means, together with theguide projections 10, are formed on the running screws 3. As shown in FIG. 3, theguide grooves 11 are provided on both sides of the top face of the runningscrew 3 and are engaged with theguide projections 10. This engagement of theguide projections 10 and theguide grooves 11 prevent the runningscrew 3 from slipping down. - FIGS.5-9 illustrate the action of this embodiment. As shown in FIG. 5, a running
screw 3 is inserted into the movinggroove 2 b of thebase 2 in a manner so that afemale screw 3 a is opposed to the bolt-receivingface 9 of the bolt-insertion hole 7. In addition, under a free condition that the bolt is not fastened, the runningscrew 3 is supported by theslope portion 8. Under such a supported condition, both ends of the runningscrew 3, which are perpendicular to the axial direction of the runningscrew 3, are brought into contact with and fastened to the inner face of thebase 2, and thus the runningscrew 3 is prevented from falling out of thebase 2. In addition, both ends of the runningscrew 3, which are perpendicular to the axial direction of the runningscrew 3, protrude inside the bolt-insertion hole 7 (see FIG. 1). - The
bolt 6 is formed in an upright fashion from an unfastened member (not shown), and when thesimple fastening device 1 is made to approach thebolt 6, thebolt 6 is inserted into the bolt-insertion hole 7 of thebase 2 from the side of the bolt-insertion face 2 a. As shown in FIG. 6, due to this insertion, thebolt 6 pushes up the runningscrew 3. As shown in FIG. 7, due to this pushing up, the runningscrew 3 slides upwards along theslope portion 8, and the runningscrew 3 moves upward. - As a result of this movement upward, the
guide projections 10 of thecover 4 are engaged with theguide grooves 11 of the runningscrew 3. The guide face 10 a of theguide projection 10 slides in theguide groove 11 so as to achieve such an engagement. The guide face 10 a is inclined in the same direction as theslope portion 8 of thebase 2, so that theguide projection 10 prevents the runningscrew 3 from displacement, namely from slipping down or being inclined, toward the bolt-insertion hole 7. As a result, thebolt 6 is smoothly inserted in thebase 2 without being hooked by the runningscrew 3. In this embodiment, theguide grooves 11 are formed on both sides of the runningscrew 3, and engaged with theguide projections 10, respectively, so that the runningscrew 3 can be prevented from slipping down or being inclined. - FIG. 8 illustrates the condition after the
bolt 6 has been inserted into thebase 2, in which thespring piece 5 of thecover 4 elastically presses the top end of the runningscrew 3 and presses the runningscrew 3 downward. Due to this pressing, the runningscrew 3 moves downward along theslope portion 8, and thefemale screw 3 a is engaged with themale screw 6 a of thebolt 6. Due to this engagement, thebolt 6 is bought into contact with the bolt-receivingface 9 of the bolt-insertion hole 7, and the bolt-receivingface 9 receives the reaction force of the engagement. As a result, the runningscrew 3 can fasten thebolt 6 without loosening. FIG. 9 illustrates the condition when the insertedbolt 6 has been returned slightly downward, and thefemale screw 3 a of the runningscrew 3 is engaged with themale screw 6 a of thebolt 6. - In such an embodiment, the
guide projections 10, which constitute a guide means, and theguide grooves 11 are engaged with each other so as to prevent slipping down or inclination of the runningscrew 3, and thus thebolt 6 can be smoothly inserted without being hooked by the runningscrew 3. Thereby, fastening can be surely performed by one-touch insertion. Also, in this embodiment, because thespring piece 5 is integrated with thecover 4, the number of parts can be reduced, and the entire axial length of the device can be shortened. - (Embodiment 2)
- FIGS. 10 and 11 illustrate
Embodiment 2 of the present invention. In this embodiment, as shown in FIG. 10, a movinggroove 2 b, which has aslope portion 8, is formed opposite to both sides of the bolt-insertion hole 7. Furthermore, a pair of runningscrews 3 are supported by theslope portion 8 in such a way that the runningscrews 3 face each other. A pair of the runningscrews 3 are inserted in thebase 2 in such a way that thefemale screws 3 a face each other. -
Guide grooves 11 are formed on the top faces of the runningscrews 3 and, as shown in FIG. 11, theguide projections 10 to be engaged with theguide grooves 11 are formed on thecover 4 in such a way that the number of theguide protrusions 10 equals the number of running screws 3. Furthermore, thespring pieces 5 for pressing each of the runningscrews 3 downward are formed at positions of thecover 4 that correspond to the running screws 3. - In this embodiment, when the
bolt 6 is inserted in the bolt-insertion hole 7 from the side of the bolt-insertion face 2 a, a pair of the runningscrews 3 move upward along theslope portion 8. Due to this movement, theguide projections 10 are engaged with theguide grooves 11 of the running screws 3. As a result, the runningscrews 3 can be prevented from inclining or slipping down, and thebolt 6 can be smoothly inserted. After thebolt 6 is inserted, the pair of runningscrews 3 are pressed by thespring piece 5, and thus the runningscrews 3 are engaged with thebolt 6 in such a way that the runningscrews 3 clamp thebolt 6 from both sides of thebolt 6. Thereby, the force for fastening thebolt 6 becomes large, so that thebolt 6 can be stably fastened. - (Embodiment 3)
- FIGS.12-16 illustrate
Embodiment 3 of the present invention. In this embodiment, a spring-accommodatinggroove 12 is formed at the end opposite to the bolt-insertion face 2 a of thebase 2. The spring-accommodatinggroove 12 is formed so as to have a predetermined length in the axial direction of thebase 2, so that acoil spring 13 can be partially inserted therein. - Because the
coil spring 13 is inserted into the spring-accommodatinggroove 12, one part of thecoil spring 13 is positioned in the movinggroove 2 b of thebase 2, and thus thecoil spring 13 presses the runningscrews 3, which are inserted in thegrooves 2 b, downward. Accordingly, in this embodiment, aspring piece 5 is not formed on thecover 4, and therefore the shape of thecover 4 is simple. -
Guide projections 10, which are to be engaged with theguide grooves 11 of the runningscrews 3, are formed on thecover 4. Theguide projection 10 projects from thecover 4 in an upright fashion on the bolt-insertion face 2 a of thebase 2, in the condition that theguide projection 10 has the guide face 10 a so as to be engaged with theguide groove 11 of the runningscrew 3. - FIGS. 12 and 13 illustrate the condition before a bolt is inserted into the
base 2 in this embodiment, FIG. 14 illustrates the condition while a bolt is being inserted, FIG. 15 illustrates the condition after a bolt has been inserted, and FIG. 16 illustrates the condition when thebolt 6 is returned slightly downward and thefemale screw 3 a of the runningscrew 3 is engaged with themale screw 6 a of thebolt 6. When thebolt 6 is inserted in thebase 2, the runningscrew 3 moves upward along theslope portion 8. Because theguide projection 10 of thecover 4 is engaged with theguide groove 11 of the runningscrew 3, the runningscrew 3 can be prevented from inclining or slipping down. Further, because thecoil spring 13 presses the runningscrew 3 downward, thefemale screw 3 a of the runningscrew 3 can be engaged with thebolt 6. In addition, because the bolt-receivingface 9 of the bolt-insertion hole 7 receives the reaction force from this engagement, thebolt 6 can be securely fastened. - The present invention is not limited to the above embodiments, and it can be implemented in various ways. For example, the
cover 4 can be omitted from thebase 2. - In this case, the running
screw 3 can be prevented from inclining or slipping down by forming theguide projection 10 at a portion of thebase 2 that faces the runningscrew 3. Also, when a plurality of runningscrews 3 are provided, more than one pair can be provided. - According to the invention set forth in
claim 1, because the guide means is engaged with the running screw so as to prevent the running screw from slipping down, the bolt is not hooked by the running screw, so that the bolt can be inserted smoothly. - According to the invention set forth in
claim 2, because the bolt can securely fastened by the running screw and the bolt-receiving face of the bolt-insertion hole, and because the running screw is prevented from slipping down, the bolt is not hooked by the running screw, so that the bolt can be inserted smoothly. - According to the invention set forth in
claim 3, because a plurality of running screws are engaged with the bolt, the bolt can be securely fastened and the running screws are prevented from slipping down. Thereby, the bolt is not hooked by the running screws, so that the bolt can be inserted smoothly. - According to the invention set forth in
claim 4, in addition to the same effects of the invention set forth in any of claims 1-3, a guide means can be formed easily. - According to the invention set forth in
claim 5, in addition to the same effects of the invention set forth inclaim 4, because a guide projection is formed on a cover that is separate from the base, the guide projection can be formed easily. - According to the invention set forth in
claim 6, in addition to the same effects of the invention set forth inclaim -
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Claims (6)
1. A simple fastening device wherein a running screw is supported by a slope portion that is formed in a bolt-insertion hole of a base, and a bolt is inserted into the bolt-insertion hole under the condition that the running screw is pressed by a pressing member, so that the running screw is engaged with the bolt, and wherein a guide means is engaged with said running screw, so that the running screw is prevented from slipping down in the base.
2. A simple fastening device that comprises (1) a base, to which are formed (a) a bolt-insertion hole whose one portion is a bolt-receiving face, and (b) a slope portion whose diameter is gradually reduced toward the bolt-insertion side under the condition that it connects with the bolt-insertion hole, (2) a running screw that slides along said slope portion and is engaged with the bolt as the bolt to be inserted moves in its axial direction, (3) a pressing member for pressing the running screw downward, and (4) a guide means that engages with the running screw and prevents the running screw from slipping down in the base.
3. A simple fastening device that comprises (1) a base to which are formed (a) a bolt-insertion hole, and (b) a plurality of slope portions whose diameters are gradually reduced toward the bolt-insertion side under the condition that they connect with the bolt-insertion hole, (2) a plurality of running screws that slide along the slope portions and are engaged with the bolts as the inserted bolt moves in its axial direction, (3) a pressing member for pressing the running screws downward, and (4) a guide means that is engaged with the running screws and prevents the running screws from slipping down in the base.
4. A simple fastening device, as set forth in any of claims 1-3, wherein said guide means comprises (1) a guide projection that is provided to the base in a manner so as to project toward the bolt-insertion side, and (2) a guide groove that is formed on said running screw so as to engage with the guide projection.
5. A simple fastening device, as set forth in claim 4 , wherein a cover into which said bolt can be inserted is attached to the base on the lower side of the bolt-insertion direction, and such that the aforementioned guide projection is provided on the cover.
6. A simple fastening device, as set forth in claim 4 or 5, wherein said guide projection has a guide face that is inclined in the same direction as the sliding direction of said running screw, and such that the guide face is engaged with said guide groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/124,403 US7422404B2 (en) | 2000-11-02 | 2005-05-09 | Facilitated tightening device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-336556 | 2000-11-02 | ||
JP2000336556A JP4697694B2 (en) | 2000-11-02 | 2000-11-02 | Simple fastening device |
PCT/JP2001/009006 WO2002036971A1 (en) | 2000-11-02 | 2001-10-12 | Facilitated tightening device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/124,403 Continuation-In-Part US7422404B2 (en) | 2000-11-02 | 2005-05-09 | Facilitated tightening device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040022598A1 true US20040022598A1 (en) | 2004-02-05 |
Family
ID=18812091
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/415,553 Abandoned US20040022598A1 (en) | 2000-11-02 | 2001-10-12 | Facilitated tightening device |
US11/124,403 Expired - Lifetime US7422404B2 (en) | 2000-11-02 | 2005-05-09 | Facilitated tightening device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/124,403 Expired - Lifetime US7422404B2 (en) | 2000-11-02 | 2005-05-09 | Facilitated tightening device |
Country Status (6)
Country | Link |
---|---|
US (2) | US20040022598A1 (en) |
EP (1) | EP1338806B1 (en) |
JP (1) | JP4697694B2 (en) |
CN (1) | CN1271343C (en) |
DE (1) | DE60119569T2 (en) |
WO (1) | WO2002036971A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120048261A1 (en) * | 2010-08-25 | 2012-03-01 | Magna International Inc. | Primary locating feature |
Families Citing this family (12)
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US8540471B2 (en) * | 2006-07-05 | 2013-09-24 | Visenut Llc | Quick attaching and detaching nut |
US20080008556A1 (en) * | 2006-07-05 | 2008-01-10 | Steven Dvorak | Quick Attaching and Detaching Nut |
JP4907457B2 (en) * | 2006-07-31 | 2012-03-28 | 有限会社エイチ・エス工業 | nut |
CN102452008A (en) * | 2010-10-21 | 2012-05-16 | 张家港市贝尔机械有限公司 | Quickly detachable nut |
DK2450492T3 (en) * | 2010-11-09 | 2019-06-24 | Geberit Int Ag | Plants for securing a sanitary ware |
US8881478B2 (en) * | 2012-06-22 | 2014-11-11 | Simpson Strong-Tie Company, Inc. | Ratcheting take-up device |
WO2014025760A2 (en) | 2012-08-06 | 2014-02-13 | Espinosa Thomas M | Holder and concrete anchor assemblies |
US9394706B2 (en) | 2013-10-08 | 2016-07-19 | Simpson Strong-Tie Company, Inc. | Concrete anchor |
US9163655B2 (en) | 2014-01-14 | 2015-10-20 | Kaoru Taneichi | Thrust nut |
CN109210044B (en) * | 2017-07-05 | 2023-09-29 | 上海汽车集团股份有限公司 | Via hole connector plastic shell mounting structure |
CN110593767A (en) * | 2018-06-13 | 2019-12-20 | 史密斯国际有限公司 | Split thread for securing an accessory to a body |
US11143223B2 (en) * | 2019-06-03 | 2021-10-12 | Rohr, Inc. | Fastener assembly for nacelle pressure-relief doors |
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- 2001-10-12 EP EP01974835A patent/EP1338806B1/en not_active Expired - Lifetime
- 2001-10-12 CN CNB018184383A patent/CN1271343C/en not_active Expired - Fee Related
- 2001-10-12 DE DE60119569T patent/DE60119569T2/en not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
EP1338806A1 (en) | 2003-08-27 |
JP2002139011A (en) | 2002-05-17 |
JP4697694B2 (en) | 2011-06-08 |
EP1338806B1 (en) | 2006-05-10 |
US7422404B2 (en) | 2008-09-09 |
WO2002036971A1 (en) | 2002-05-10 |
DE60119569T2 (en) | 2007-01-25 |
CN1473246A (en) | 2004-02-04 |
DE60119569D1 (en) | 2006-06-14 |
EP1338806A4 (en) | 2004-11-03 |
US20050276675A1 (en) | 2005-12-15 |
CN1271343C (en) | 2006-08-23 |
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