WO1997041751A1 - Instrument en forme de baguette - Google Patents
Instrument en forme de baguette Download PDFInfo
- Publication number
- WO1997041751A1 WO1997041751A1 PCT/JP1997/001538 JP9701538W WO9741751A1 WO 1997041751 A1 WO1997041751 A1 WO 1997041751A1 JP 9701538 W JP9701538 W JP 9701538W WO 9741751 A1 WO9741751 A1 WO 9741751A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rod
- shaped
- grip
- shaped shaft
- cane
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B7/00—Other sticks, e.g. of cranked shape
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B1/00—Sticks with supporting, hanging or carrying means
- A45B1/04—Walking sticks with means for hanging-up or with locks
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
- A45B9/04—Ferrules or tips
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C13/00—Details; Accessories
- A45C13/001—Accessories
Definitions
- the present invention relates to a rod-shaped tool that can be gripped and used by a user, and particularly to a rod-shaped tool such as a cane or an umbrella used when going out or walking.
- canes and umbrellas are widely used in daily life.
- elderly people and people with disabilities often use sticks and canes when going out.
- Overseas, sticks are historically old and have been widely used in daily life.
- Such a cane or umbrella is very difficult to lean against a wall, etc., and even when leaning against it, even if it is slightly shaken, etc. In many cases, the ground collapses and falls. Similarly, when the handle is hooked on a shelf or the like provided at a predetermined height from the floor or the ground, the stability is poor and the balance easily loses. In many cases, they fell.
- the handle portion to be gripped by the user is generally formed in a J-shape, and when leaned against a wall, formed in a J-shape. This is because only about one point of the gripping part touched the wall, resulting in extremely poor stability.
- the abutment portion in the handle portion is very small, and the handle portion has a J-shape. This is because the formed gripping part cannot absorb the swing in the width direction, so that the balance was broken.
- the object of the invention described in claim 1 is to bend the hips and bend forward or to kneel down.
- the object of the present invention is to make it possible to easily pick up a stick, such as a cane or an umbrella, that has fallen over, in a substantially upright state without bending.
- the subject of the invention described in claim 2 is that, by pressing the gripping part against the ground or the floor, the tip part can easily be raised from the ground or the floor. To provide a stick that can be grasped by hand.
- the subject of the invention described in claim 3 is that, by pressing the tip against the ground or the floor, the gripping part can be raised from the ground or the floor, and can be easily handled by hand.
- the purpose of the present invention is to provide a stick that can be gripped by a finger.
- An object of the invention described in claim 4 is that a curve curved in a three-dimensional direction is provided.
- An object of the present invention is to provide a rod-shaped tool provided with a grip having a shape.
- Another object of the present invention is to provide a rod-shaped member provided with a tip having a curve curved in a three-dimensional direction.
- inventions according to claims 7 to 9 are to provide a bar-shaped tool in which a grip portion is deformed in various modes.
- An object of the present invention is to provide a cane that can be easily picked up while standing upright.
- the invention according to claim 11 is substantially upright without bending the waist and bending the body forward or bending the knee even when the vehicle falls down. It is an object of the present invention to provide an umbrella that can be easily picked up in an intact state.
- a rod-shaped tool that is gripped and used by a user, and the rod-shaped tool is arranged along a longitudinal direction.
- a portion is formed at one end so as to intersect with the surface, and the other end is formed so as to be in contact with the surface.
- the one end is pressed against a surface, the one end is formed as a fulcrum and the other end is formed so as to rise from the surface.
- rods are used in all aspects of everyday life and work, and in any other environment, in the form of rods, and used by humans.
- Device Therefore, for example, a cane, an umbrella and the like are representative.
- the rod-shaped member has a rod-shaped shaft portion and a grip portion formed at an end of the rod-shaped shaft portion, and the rod-shaped member is arranged along the length direction.
- the gripping portion When laid on a predetermined surface, the gripping portion is formed so as to be in contact with the predetermined surface at the same time, and the tip of the rod-shaped shaft portion is formed so as to be in contact with the predetermined surface.
- the grip portion When the holding portion is pressed against the surface, the grip portion serves as a fulcrum, and the tip of the rod-shaped shaft portion is formed so as to be separated from the surface and rise.
- the ground formed on the grip portion or a portion separated from the floor is ground.
- the tip of the rod-shaped shaft is separated from the ground or floor by using the grip as a fulcrum according to the principle of leverage. It is possible to stand up.
- the gripping portion of the rod-shaped tool is pressed against the ground or the floor, so that the tip end is raised from the ground or the floor. It can be easily grasped by hand.
- the rod-shaped member has a rod-shaped shaft portion and a grip portion formed at a tip end portion of the rod-shaped shaft portion, and the rod-shaped member extends along the length direction.
- the rod-shaped shaft is laid on a predetermined surface, a portion is formed at the tip end of the shaft portion, which is interposed from the surface, and the grip portion is formed so as to be in contact with the predetermined surface.
- the tip of the part is pressed against the surface, the tip of the rod-shaped shaft serves as a fulcrum, and the gripping part side rises away from the surface. To It is characterized by being formed.
- the gripping portion may be raised from the ground or the floor. And can be easily grasped by hand.
- the grip portion is formed in a substantially J-shaped side surface, and is once twisted by a predetermined angle to one side orthogonal to the axis of the rod-shaped shaft portion.
- a first bending portion, and a second bending portion formed by being continuous with the first bending portion and twisted by a predetermined angle toward the other side orthogonal to the axis. And are characterized.
- the bar-shaped member when the rod-shaped member is laid on a predetermined surface along the length direction, the bar-shaped member is formed on the grip portion, and is formed from the surface.
- the portion to be interposed is a first bowl bent portion once twisted by a predetermined angle to one side orthogonal to the axis of the rod-shaped shaft portion, and the shaft portion connected to the first curved portion.
- a second curved portion formed by being twisted by a predetermined angle to the other side orthogonal to the second curved portion.
- the invention according to claim 4 provides a rod-shaped tool provided with a grip portion having a curve curved in a three-dimensional direction.
- the tip of the rod-shaped shaft portion is formed in a substantially J-shaped side surface, and is once twisted by a predetermined angle to one side orthogonal to the shaft.
- a second curved portion formed by being twisted by a predetermined angle to the other side orthogonal to the axis and continuous with the first curved portion, the second curved portion being continuous with the first curved portion; It is characterized by Therefore, in the invention according to claim 5, when the rod-shaped member is laid down on a predetermined surface along the length direction, a space formed between the surface and the space formed on the grip portion.
- the portion to be bent is a first curved portion once twisted by one predetermined angle to one side orthogonal to the axis of the rod-shaped shaft portion, and is continuous with the first curved portion and orthogonal to the axis. It is formed by a second curved portion twisted by a predetermined angle toward the other side.
- the invention according to claim 5 provides a rod-shaped tool provided with a tip having a curve curved in a three-dimensional direction.
- the invention according to claim 6 is characterized in that the second curved portion is formed by being twisted at an angle of about 45 degrees with respect to the rod-shaped shaft portion.
- the user can easily grasp the rod-shaped tool that stands up at an angle of about 45 degrees while remaining in a substantially upright state.
- the invention according to claim 7 is characterized in that the grip portion is formed in a substantially trapezoidal shape in a plane.
- a bar-shaped tool having a grip portion formed in a substantially trapezoidal plane is provided.
- An eighth aspect of the present invention is characterized in that the grip portion is formed in a T shape.
- the invention according to claim 8 provides a bar-shaped tool in which the grip portion is formed in a T-shape.
- the invention according to claim 9 is characterized in that the grip portion is formed in an L shape.
- the invention according to claim 9 provides a bar-shaped tool in which the grip portion is formed in an L shape.
- the tenth aspect of the present invention is characterized in that the stick is formed as a walking stick used for walking.
- the invention according to claim 11 is characterized in that the rod-shaped member is formed as an umbrella.
- FIG. 1 is a plan view showing an embodiment in which the stick according to the present invention is applied to a stick
- FIG. 2 is an embodiment in which the stick according to the present invention is applied to a stick
- FIG. 3 is a front view showing an embodiment in which the stick according to the present invention is applied to a cane
- FIG. 4 is a side view showing the embodiment of the present invention.
- FIG. 5 is a side view showing an embodiment in which the stick is applied to the walking stick, and is an explanatory view showing a state in which the walking stick stands upright after falling over the ground or the floor, and FIG. 5 and FIG. FIG.
- FIG. 6 is a side view showing an embodiment in which the stick according to the present invention is applied to a cane, and is an explanatory view showing a state in which the cane has fallen on the ground or floor.
- Fig. 1 is a side view showing an embodiment in which a stick is applied to a cane, showing a state in which the stick is leaned against a wall
- Fig. 8 is a view showing FIG. 9 is a plan view showing an embodiment in which the rod-shaped tool according to the present invention is applied to a cane, showing a state where the stick is hooked on a shelf or the like.
- FIG. 1 is a side view showing an embodiment in which a stick is applied to a cane, showing a state in which the stick is leaned against a wall
- Fig. 8 is a view showing
- FIG. 9 is a plan view showing an embodiment in which the rod-shaped tool according to the present invention is applied to a cane, showing a state where the stick is hooked on a shelf or the like
- FIG. 10 is a side view showing an embodiment in which the related rod is applied to a cane, and is a view showing a state where the stick is hooked on a shelf or the like;
- FIG. 1 is a side view showing another embodiment in which the stick according to the present invention is applied to a stick
- FIG. 11 is a side view showing another embodiment in which the stick according to the present invention is applied to a stick.
- FIG. 12 is a plan view showing the embodiment
- FIG. 12 is a front view showing another embodiment in which the stick according to the present invention is similarly applied to a cane
- FIG. FIG. 14 is a side view showing another embodiment in which the stick according to the present invention is applied to a cane.
- FIG. 14 is another side view in which the stick according to the present invention is similarly applied to a cane.
- FIG. 15 is a side view showing an embodiment
- FIG. 15 is a side view showing another embodiment in which the stick according to the present invention is applied to a cane, wherein the cane is on the ground or floor.
- FIG. 16 is an explanatory view showing a state of standing up after a fall.
- FIG. 16 shows another embodiment in which the stick according to the present invention is similarly applied to a cane.
- Ru explanatory view showing a state where the cane falls down on the floor.
- a rod-like tool that is gripped and used by a user is formed as a cane 10.
- This cane 10 has a rod-shaped shaft portion 14 and a grip portion 15 formed at an end of the rod-shaped shaft portion 14.
- a portion 17 is formed in the gripping portion 15 from the above-mentioned predetermined surface, and the tip 16 of the rod-shaped shaft portion 14 is at a predetermined position.
- the grip 15 is pressed against the ground or the floor 11, the grip 15 is a fulcrum, and the grip 15 is formed so as to be in contact with the surface 11.
- the tip 16 side of the rod-shaped shaft portion 14 is formed so as to be separated from the ground or the floor surface 11 so as to rise. As shown in FIG.
- the grip portion 15 is formed in a substantially J-shaped side surface, and is once twisted by a predetermined angle toward one side orthogonal to the axis 18 of the rod-shaped shaft portion 14. After being formed, it is further continuously twisted by a predetermined angle to the other side orthogonal to the axis 18.
- the cane 10 is twisted once by a predetermined angle in a direction perpendicular to the extending direction of the gripping portion 15 of the cane 10 and extends over the predetermined length L over a predetermined length L. 19 is formed and further continuously twisted by a predetermined angle in a direction orthogonal to the extending direction of the gripping portion 15 in a direction opposite to the first curved portion 19.
- the second curved portion 20 is formed directly on the length L 1 which is slightly larger than the first curved portion 19.
- the first bending portion 19 and the second bending portion 20 are formed by being twisted in opposite directions, and these bending portions 19, 20 are connected to the tip of the grip portion 15.
- the shape of the grip part 15 is formed so as to form a gentle S-shape, and as shown in FIG.
- the end portion 21 of the grip portion 15 is formed so as to be located outwardly of the rod-shaped shaft portion 14 when viewed from the side of the grip portion 15.
- the first bending portion 19 and the second bending portion 20 function as balancers, and the rod-shaped shaft is provided.
- the configuration is such that the force generated by the shaking in the direction orthogonal to the part 14 can be effectively absorbed, and in the present embodiment,
- the second curved portion 20 is configured such that the angle ⁇ between the rod-shaped shaft portion 14 and the axis 18 of the rod-shaped shaft portion 14 is about 45 degrees.
- the grasping portion 15 is stepped on with a foot.
- the grip 16 is used as a fulcrum, and the tip 16 of the rod-shaped shaft 14 is raised. You can pick up the stick 10.
- the distal end 16 of the rod-shaped shaft 14 begins to separate from the ground or floor 11 with the end 21 of the second curved portion 20 as a fulcrum, and the cane 10 It starts to stand from the tip 16 side of the rod-shaped shaft 14.
- the second bending portion 20 has the rod-shaped shaft portions 14 and 45.
- the rod-shaped shaft portion 14 stands at an angle of approximately 45 degrees with the tip portion 12 of the grip portion 15 as a fulcrum because the angle is set to form an angle of angle. .
- the person using the cane 10 can easily use the wand 10 with his hands upright without bending his hips or knees. You can grab it.
- the cane 10 according to the present embodiment is placed on a shelf i 3 or the like provided at a predetermined height from the ground or floor 11.
- the first curved portion 19 and the second curved portion 20 function as a balancer when they are hooked by the end portion 21 of the grip portion 15 as described above.
- the vibration can be effectively absorbed.
- the grip portion 15 as a whole has a reciprocal number with respect to the surface of the wall 17. Since this contact point can be formed, the contact can be stably stood as compared with a general cane formed in a J-shape in a plane.
- the grip portion 15 is formed in an S-shape as a whole, and the first bay curved portion 19 and the second curved portion 20 are formed, the user holds the grip portion 15.
- the portion 15 is gripped, a plurality of force points are formed in the thickness direction of the grip portion 15 as compared with the conventional case where the portion 15 is formed in a J-shape in a plane. Therefore, it is easy to grasp.
- the cane 10 is easily fixed, it is easy to hold the body using the cane 10.
- the grip portion 15 has a first curved portion 19 that is once twisted by a predetermined angle to one side orthogonal to the axis of the rod-shaped shaft portion 14,
- a peg-bend part 20 is formed by being twisted by a predetermined angle to the other side orthogonal to the axis center, which is continuous with the first bend part 19.
- the force described in (1) is not limited to the above-described embodiment.
- the first bending portion 19 and the second bending portion 20 are formed at the distal end of the rod-shaped shaft portion 14 as shown in FIG. 10. It may be provided on the 16 side.
- the present embodiment is different from the above-described embodiment.
- the cane 30 can be picked up by grasping the grasping portion 15 by hand.
- the cane 30 can be picked up without soiling the hands when picking up the cane 30.
- the shape of the cane 10 is in the shape of a substantially J-shaped plane has been described as an example, but the present invention is not limited to the above-described embodiment, and the cane 3 shown in FIG. As shown in FIG. 7, it may be formed in a substantially trapezoidal plane.
- the holding portion 31 in this embodiment is formed in a substantially trapezoidal shape in a plane, and is joined to the rod-shaped shaft portion 14 in an inverted trapezoidal shape.
- the rod-shaped shaft portion 14 is fixed to a lower end portion of the grip portion 31 by a joint portion 32.
- the gripping portion 31 is connected to the rod-shaped shaft portion 14 from the tread surface portion 33 forming the front side to the back side 38, as shown in Fig. 13.
- a ground surface portion 34 composed of an inclined surface formed so as to cut in two directions, and a bar-shaped shaft portion of the grip portion 31 is provided so as to face the ground surface portion 34.
- An inclined grip surface 35 is provided on the side of the joint 32 with 14. In the present embodiment, the angle ⁇ 1 between the rod-shaped shaft portion 14 and the grounding surface portion 34 is formed at approximately 45 degrees.
- both ends of the gripping surface portion 35 inclined portions 36, 36 formed at substantially the same angle as the gripping surface portion 35 are formed, and as a whole, the gripping portion is formed. Both sides and the lower side of the surface portion 33 of 31 are chamfered at a predetermined angle.
- the grasping portion 31 is grasped.
- the ground surface 34 consisting of the above-mentioned inclined surface and the grip surface 35 provided opposite to the ground surface 34 are provided. Easy to grip.
- the tread surface portion 33 of the grip portion 31 is moved to the grip portion 3 as shown in FIG. Step 1 toward the tip.
- the ground surface portion 34 is formed on the ground or floor surface 11.
- the rod-shaped shaft 14 rises from the tip 16 side of the rod-shaped shaft 14 until it touches the ground, and rises at an angle of about 45 degrees from the ground or floor surface 11. . Therefore, as in the previous embodiment, the user can easily stay in an upright position without bending his knees or bending his knees.
- the staff 14 can be picked up by grasping the shaft 14.
- the form of the gripping portion is not limited to the above embodiments, and may be formed in a T-shape or an L-shape.
- the umbrella grip is formed, for example, in a substantially J-shape on the side as described above, and is first bent once by a predetermined angle to one side orthogonal to the axis of the rod-shaped shaft.
- the first bending portion, and a second bending portion formed by being twisted by a predetermined angle toward the other side perpendicular to the axis and continuous with the first bending portion.
- the stick-shaped device according to the present invention is not only a stick-shaped daily necessity, such as a cane, an umbrella, or the like, which is used in daily life, but also widely used by humans. Can be widely applied to rod-shaped articles that are used by hand.
Landscapes
- Walking Sticks, Umbrellas, And Fans (AREA)
- Rehabilitation Tools (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97918378A EP0931474A4 (en) | 1996-05-07 | 1997-05-07 | ROD SHAPED TOOL |
JP53974597A JP3337478B2 (ja) | 1996-05-07 | 1997-05-07 | 棒状具 |
AU26513/97A AU726986B2 (en) | 1996-05-07 | 1997-05-07 | Rod-shaped tool |
KR1019980708896A KR100294365B1 (ko) | 1996-05-07 | 1997-05-07 | 봉상구 |
US09/180,127 US6220262B1 (en) | 1996-05-07 | 1997-05-07 | Rod-shaped tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8/137699 | 1996-05-07 | ||
JP13769996 | 1996-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997041751A1 true WO1997041751A1 (fr) | 1997-11-13 |
Family
ID=15204755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/001538 WO1997041751A1 (fr) | 1996-05-07 | 1997-05-07 | Instrument en forme de baguette |
Country Status (7)
Country | Link |
---|---|
US (1) | US6220262B1 (ja) |
EP (1) | EP0931474A4 (ja) |
JP (1) | JP3337478B2 (ja) |
KR (1) | KR100294365B1 (ja) |
CN (1) | CN1134232C (ja) |
AU (1) | AU726986B2 (ja) |
WO (1) | WO1997041751A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007059947A1 (de) * | 2007-12-12 | 2009-06-18 | Karin Dahm | Gehhilfe |
US7984723B2 (en) * | 2009-09-09 | 2011-07-26 | Stander Inc. | Self-standing walking cane |
US10456904B1 (en) * | 2018-11-20 | 2019-10-29 | Ronald H. Stirtz | Retrievable dropped reacher device |
CN110292334A (zh) * | 2019-07-30 | 2019-10-01 | 西安佳品创意设计有限公司 | 省力装置及清洁工具 |
US12108849B1 (en) * | 2023-11-20 | 2024-10-08 | Nathan Nguyen | Systems and methods for safe object retrieval |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6352416U (ja) * | 1986-09-22 | 1988-04-08 | ||
JPH0574313U (ja) * | 1992-03-14 | 1993-10-12 | 詳子 佐藤 | 傘 |
JPH0658714U (ja) * | 1993-01-13 | 1994-08-16 | 信弘 井田 | 置き忘れ防止倒立装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2388778A (en) * | 1944-06-20 | 1945-11-13 | John D Wheeler | Crutch |
US4044784A (en) | 1976-03-01 | 1977-08-30 | Smith Alfred A | Walking aid cane |
FR2380000A1 (fr) * | 1977-02-14 | 1978-09-08 | Bouvet Francois | Canne de marche |
US4274430A (en) | 1979-08-15 | 1981-06-23 | Schaaf Cecil F | Walking cane apparatus |
IT8123538V0 (it) * | 1981-11-16 | 1981-11-16 | Fiamma Spa | Bastone, particolarmente per persone debilitate. |
US4625742A (en) * | 1983-12-27 | 1986-12-02 | Phillips Jerry G | Multi-function lighted walking cane |
WO1989000039A1 (en) * | 1987-07-06 | 1989-01-12 | Brian James Coogan | Pair of crutches convertible to a walking stick |
US4790339A (en) * | 1987-09-16 | 1988-12-13 | Bennett Devane D | Multi-purpose stick |
US4811750A (en) * | 1988-06-14 | 1989-03-14 | Mcallister John M | Cane with extensible fingers |
US4899771A (en) * | 1989-01-03 | 1990-02-13 | Wilkinson Kenneth A | Walking aid |
US5193567A (en) * | 1991-10-29 | 1993-03-16 | Razny Jr Frank R | Mobility enhancement device |
US5411313A (en) * | 1992-10-29 | 1995-05-02 | Counihan; Noel | Portable seating device |
US5433234A (en) * | 1993-02-16 | 1995-07-18 | Lapere; Samuel | Supportive device for walking |
US5673719A (en) * | 1995-10-27 | 1997-10-07 | Shofner; Martin K. | Crutch assembly |
-
1997
- 1997-05-07 CN CN97195153.5A patent/CN1134232C/zh not_active Expired - Fee Related
- 1997-05-07 AU AU26513/97A patent/AU726986B2/en not_active Ceased
- 1997-05-07 JP JP53974597A patent/JP3337478B2/ja not_active Expired - Fee Related
- 1997-05-07 EP EP97918378A patent/EP0931474A4/en not_active Withdrawn
- 1997-05-07 KR KR1019980708896A patent/KR100294365B1/ko not_active IP Right Cessation
- 1997-05-07 US US09/180,127 patent/US6220262B1/en not_active Expired - Lifetime
- 1997-05-07 WO PCT/JP1997/001538 patent/WO1997041751A1/ja not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6352416U (ja) * | 1986-09-22 | 1988-04-08 | ||
JPH0574313U (ja) * | 1992-03-14 | 1993-10-12 | 詳子 佐藤 | 傘 |
JPH0658714U (ja) * | 1993-01-13 | 1994-08-16 | 信弘 井田 | 置き忘れ防止倒立装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0931474A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0931474A4 (en) | 2002-09-18 |
CN1134232C (zh) | 2004-01-14 |
AU726986B2 (en) | 2000-11-30 |
JP3337478B2 (ja) | 2002-10-21 |
AU2651397A (en) | 1997-11-26 |
EP0931474A1 (en) | 1999-07-28 |
US6220262B1 (en) | 2001-04-24 |
KR20000010773A (ko) | 2000-02-25 |
KR100294365B1 (ko) | 2001-08-07 |
CN1220587A (zh) | 1999-06-23 |
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