EP0950597B1 - Führungssystem mit einem auf einer Schiene geführten Laufwagen - Google Patents
Führungssystem mit einem auf einer Schiene geführten Laufwagen Download PDFInfo
- Publication number
- EP0950597B1 EP0950597B1 EP98810330A EP98810330A EP0950597B1 EP 0950597 B1 EP0950597 B1 EP 0950597B1 EP 98810330 A EP98810330 A EP 98810330A EP 98810330 A EP98810330 A EP 98810330A EP 0950597 B1 EP0950597 B1 EP 0950597B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rail
- guide
- carriage
- toothing
- guiding system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/02—Tracks for rack railways
- E01B25/04—Rack rails; Supports or connections for rack rails
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/02—Rack railways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C11/00—Locomotives or motor railcars characterised by the type of means applying the tractive effort; Arrangement or disposition of running gear other than normal driving wheel
- B61C11/04—Locomotives or motor railcars characterised by the type of means applying the tractive effort; Arrangement or disposition of running gear other than normal driving wheel tractive effort applied to racks
Definitions
- the invention relates to a carriage for a guide system with one with guide surfaces and with a toothed rail.
- the carriage has a drive gear, which in one Force application point engages in the toothing of the rail, and further guide elements that in corresponding support points on the laterally arranged guide surfaces of the rail are, wherein the drive gear and at least a first of the guide elements in constant Are spaced from each other and are arranged so that one through the force application point on the one hand and the point of contact of said first guide element on the first guide surface on the other hand, the straight line defined is always perpendicular to the current direction of travel. Further refers the invention on a guide system with such a carriage and on a rail for Carriage.
- Conveyor systems that can move to specified positions exactly are e.g. in the automated Manufacturing needed. With such a conveyor system, the workpieces can be removed from a processing station transported to a next one and automatically handed over there.
- gear and spindle drives can.
- Such drives come e.g. in machines with precisely movable processing units (Milling machine, drill, etc.).
- a typical application example is a bogie or Rotary table of an automatic assembly machine. By the number of revolutions of the pinion or the driving The gear is precisely determined.
- the known gear drives are only for the execution of either exclusively linear or only suitable for rotating movements.
- the German utility model G 92 14 738 shows a conveyor system with a guide rail and a rack whose teeth are aligned horizontally.
- the trolley has a drive gear, which is coaxial to the foremost transverse guide roller is stored.
- the roller system is in a box-shaped guide rail that is open at the top guided and the rack is located laterally above the guide rail.
- the guide rail is a simple carrier, on the outside the roller system is guided.
- the rack is attached laterally below the guide rail and the geometric axis of the gear runs through the center of the guide rail.
- the toothing of the rack runs in each case plane-parallel to the plane-parallel transverse guideways the guide rail.
- FR 2 336 287 is concerned with a passenger transport system with gear drive.
- the guide rail has side guide surfaces for corresponding guide rollers of the carriage.
- the Gearing points vertically downwards. This system is not suitable for curves.
- the object of the invention is a carriage, a guide system, and a rail of the types mentioned indicate which positional accuracy and largely free lines combine.
- the carriage has at least one chassis, the pivot axis of which Force application point of the drive gear runs.
- a toothed rack is formed on the rail such that the dividing line of the toothing unites has a predefined constant distance from at least one lateral guide surface.
- the carriage has a guide element, which on the lateral guide surface mentioned in a support point is guided, and a drive gear, which engages in a force application point in the rack.
- Drive gear and guide element are arranged so that by the force application point and The point of contact defined is always perpendicular to the current direction of travel.
- the current direction of travel is defined by the tangents to the dividing line.
- the dividing line runs through a perpendicular bisector of the cross section of the Guide rail.
- leadership elements usually used leadership roles. But sliding elements are also possible.
- a carriage according to the invention has at least one, but preferably two chassis. This are designed so that when the direction changes, the axis of rotation or swivel of the chassis runs through the dividing line of the gearing.
- the pivot axis goes through the Force application point and is parallel to an axis of rotation of the drive gear. (Has the carriage only a single chassis, then the center of gravity of the carriage should be on the above Swivel axis.) This ensures that the driving force (acceleration or Braking force) generates no reaction torque on the carriage (or its chassis).
- the chassis has a three-point guide. This means that the lateral guidance or control of the direction is in principle taken over by three roles. Two run on one guide surface and one on the other just a role. The three points of the side guide form an isosceles triangle with an opening angle of e.g. 30 ° to 40 °.
- Two of the three rollers are advantageously sprung. It is the one that are arranged on the same side and consequently run on the same guide surface. There can also be more than three guide rollers (the number of Suspension must be adjusted accordingly). Only two guide rollers become symmetrical provided to the swivel axis of the chassis, stabilization can become a problem (Vibrations, rolling movements).
- the preferred version of the three-point guide allows one for any curve radius geometrically exact tooth mesh.
- the weight of the carriage is preferably carried by separate support rollers. This do not need to be sprung.
- the rail has e.g. a substantially flat rectangular one Cross section, the outer narrow sides of the guide surfaces and the top and bottom surfaces in the edge area the running surfaces for the support rollers form. Depending on whether the carriages are standing on the rail or hanging on it, the rack is formed on the upper or lower broad side of the rail.
- the guide rail and the rack must be manufactured with high precision.
- the two parts can be manufactured individually and then connected (screwed, welded). So that the geometry of the toothing in the curves is correct, you can two identical straight racks with the gears interlocked and then be bent together into the desired radius. But it is also possible that the guide rail and rack are milled directly from a single workpiece.
- the guide rail is advantageously attached to a carrier, which has the required has static resilience, so that the precision-made part of the rail system dimensions and weight can be kept to a minimum.
- the carrier can be an ordinary double T-beam without special precision criteria.
- the Rail is preferably essentially along its entire length (e.g. by regular spaced fasteners) attached to the carrier, so that their inherent stability is guaranteed. Finally, a conductor rail can also be attached to the carrier.
- the guide system according to the invention can be modular. That means it different rail pieces (straight, left-curved, right-curved) are provided, which the user creates according to his needs individual transport system can be put together. In combination with Turnouts, crossings or even lift stations result in a wide range of Possibilities.
- FIG. 1 shows schematically the principle of the invention.
- a rail 1 is for example on Foot of a double-T beam 10 attached.
- the rail 1 has the shape of a plate or a strip or ribbon-shaped flat element and consists of a high quality Steel.
- the narrow sides 2.1, 2.2 serve as lateral guide surfaces, the lower and upper edge surfaces 3.1, 3.3 or 3.2, 3.4 as running surfaces.
- the division line 6 lies (or its point of intersection through the cross-sectional plane) on the perpendicular 7 of the (in the present example) mirror-symmetrical trained rail 1.
- the two Narrow sides 2.1, 2.2 define two parallel planes, and one defines exactly in the In the middle between these two imaginary levels there is a third level Division line 6 of the toothing 5 in this third level.
- the axis of rotation of the drive gear is parallel to the perpendicular 7 (i.e. in Fig. 1 vertically and not horizontally).
- the toothing 5 shows in horizontal Direction.
- the geometric orientation can also be described as follows:
- the toothing 5 can be assigned a foot line 9 and a head line 8.
- the rack 4 curved; can instead of a foot line 9 from a foot circle instead of one Head line 8 from a head circle and instead of a dividing line 6 from one Pitch circle or pitch circle can be spoken.
- the foot line 9 and the head line 8 lie on two different sides of the perpendicular bisector 7. Basically comes it does not depend on whether the foot line 9 on the left with respect to the perpendicular 7 (i.e. on the side facing the narrow side 2.1) or on the right, i.e. if she Toothing to the left or to the right shows.
- FIG. 2 and 3 show how a chassis 11 is guided by the rail 1 according to the invention becomes.
- the rail 1 is viewed from above.
- the carriage 21 is located below the rail 1 and is e.g. on two identical chassis hinged.
- Fig. 3 shows the same construction in cross section.
- the guide rollers 15.1 to 15.3 are mounted on a first side wall 16 of the chassis 11.
- Two suspensions 18.1, 18.2 press the two guide rollers 15.1 and 15.2 against the narrow side 2.2.
- the third Guide roller 15.3 is on an opposite side wall 17 of the chassis 11 unsprung.
- the distance between the two side walls 16, 17 is slightly larger than the width of the rail 1, so that the chassis can grip around the rail 1 in a U-shape. Furthermore, the present Example the side walls 16, 17 towards the narrow sides 2.1, 2.2 of the rail 1 convexly curved. According to the smallest radii of curvature in the system the rail they run easily from the center of the chassis to the outside apart.
- the axes of rotation of the three guide rollers 15.1 to 15.3 form the corners of an isosceles Triangle.
- the two same legs of the triangle are through the connecting lines the axes of the guide rollers 15.1 and 15.3 on the one hand and 15.2 and 15.3 the opening angle of the triangle is preferably in the range between 30 ° and 40 °.
- the opening angle is too small, the stability of the guide suffers. That means it can Pendulum or roll movements come about a vertical axis. Is the named On the other hand, if the angle is too large, the spring-loaded guide rollers 15.1 and 15.2 must be unnecessary have large spring travel (especially when cornering relatively tightly) should be or if there are very different radii of curvature).
- One of the two guide rollers 15.1 and 15.2 is always leading and one trailing. For example, when changing from a straight section to a curved section Suspension 18.1, 18.2 for smooth initiation of the change of direction or chassis swivel movement.
- the point of contact 24 of the guide roller 15.3 on the narrow side 2.1 is in relation to the Chassis 11 clearly defined because the guide roller 15.3 mentioned is neither resilient stored itself is elastic.
- the distance between gear 13 and guide roller 15.3 is constant.
- the force application point 14 and Support point 24 defined direction always perpendicular to the current direction of travel. The latter is defined by the tangent to the division line in the force application point 14.
- a carriage 21 typically has two chassis. One has one Electric drive 12, the gear 13 in the toothing 5 of the rack 4th intervenes.
- the dividing line 6 has a constant distance from the along the rail 1 Narrow side 2.1, which guides the guide roller 15.3.
- the rack 4 is located between the gear 13 and the rigid guide roller 15.3.
- the position of the carriage 21 can be accurate with a numerically controlled motor to be controlled.
- Current and control signals can be used with a pantograph of one e.g. busbar 23 attached to the carrier 10 can be tapped (cf. FIG. 3).
- each side wall four castors are provided.
- the four are on the top side i.e. on the edge surfaces 3.2 and 3.4 running rollers 19.1 to 19.4.
- the pairs of rollers 19.1 / 19.2 and 19.3 / 19.4 are mounted at a small mutual distance.
- the axis of the guide roller 15.3 is located in the middle between the rollers 19.3 and 19.4.
- the described embodiment can be carried out in many ways within the scope of the invention as defined in the claims be modified.
- the chassis can also be arranged standing instead of hanging become.
- the rail can also be inclined.
- the rail can be symmetrical, for example, on the lateral edges beveled. It is even conceivable that the cross section of the rail is not symmetrical is.
- the rail usually runs on one level. That means the radii of curvature lie in the plane defined by the strip shape of the rail. But it’s not out of the question that the direction of the rail by slow change over a long distance is led out of this level ("flat ramp").
- the rail be supported by a double-T beam or the like is supported. It can also be self-supporting.
- the guide rollers can be hard or elastic.
- an elastic tire can make resilient storage unnecessary (e.g. if the Radii of curvature of the rail are very large).
- the invention is a guidance system has been created, which can be positioned precisely with any lines enabled with relatively little control engineering effort.
- the invention versatile, be it on a larger machine with a computer-controlled one Workpiece processing or as a transport system in manufacturing plants or even in Amusement parks.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Transmission Devices (AREA)
- Types And Forms Of Lifts (AREA)
Description
- Fig. 1
- Eine schematische perspektivische Darstellung der Geometrie der erfindungsgemässen Schiene;
- Fig. 2
- eine schematische Darstellung der Führung eines Fahrgestells auf einer gekrümmten Schiene in der Draufsicht;
- Fig. 3
- eine schematische Darstellung der in Fig. 2 gezeigten Anordung im Querschnitt.
Claims (18)
- Laufwagen (21) für ein Führungssystem mit einer mit Führungsflächen und mit einer Verzahnung (5) versehenen Schiene (1),a) welcher ein Antriebszahnrad (13) aufweist, das in einem Kraftangriffspunkt (14) in die Verzahnung (5) der Schiene (1) eingreifen kann, undb) welcher weiter Führungselemente (15.1, 15.2) aufweist, die in entsprechenden Auflagepunkten (24) auf den seitlich angeordneten Führungsflächen (2.1, 2.2) der Schiene (1) führbar sind,c) wobei das Antriebszahnrad (13) und mindestens ein erstes der Führungselemente (15.1, 15.2) in konstantem Abstand zueinander sind undd) so angeordnet sind, dass eine durch den Kraftangriffspunkt (14) einerseits und den Auflagepunkt (24) des genannten ersten Führungselementes (15.1, 15.2) auf der ersten Führungsfläche andererseits definierte Gerade stets senkrecht zur momentanen Fahrtrichtung ist,
dadurch gekennzeichnet, dasse) der Laufwagen mindestens ein Fahrgestell (11) aufweist, dessen parallel zu einer Rotationsachse des Antriebszahnrades (13) verlaufende Schwenkachse (22) durch den Kraftangriffspunkt (14) des Antriebszahnrades (13) verläuft. - Laufwagen nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkachse (14) des Fahrgestells (11) durch den Schwerpunkt des Laufwagens (21) bzw. des Fahrgestells (11) und den Kraftangriffspunkt verläuft.
- Laufwagen nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Führungselemente (15.1 bis 15.3) eine Dreipunktführung bilden.
- Laufwagen nach Anspruch 3, dadurch gekennzeichnet, dass zwei auf derselben Führungsfläche führbare Führungselemente (15.1, 15.2) federnd gelagert sind.
- Laufwagen nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das genannte erste Führungselement (15.3) ungefedert ist, um einen konstanten Abstand zum Antriebszahnrad (13) zu haben.
- Laufwagen nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass Laufrollen (19.1 bis 19.4) vorgesehen sind, die an der Schiene (1) von oben und von unten angreifen können.
- Führungssystem, umfassend einen Laufwagen (21) gemäss Anspruch 1 sowie eine mit seitlichen Führungsflächen (2.1, 2.2) versehene Schiene (1),a) wobei eine zur Verzahnung (5) gehörende Teilungslinie (6) einen vordefinierten konstanten Abstand zu mindestens einer ersten der seitlichen Führungsflächen (2.1, 2.2) hat,b) wobei die Verzahnung (5) bezogen auf die Führungsflächen (2.1, 2.2) seitlich nach links oder nach rechts zeigt, undc) wobei die Teilungslinie (6) der Verzahnung (5) im Bereich zwischen den Führungsflächen (2.1, 2.2) angeordnet ist.
- Führungssystem nach Anspruch 7, dadurch gekennzeichnet, dass die Teilungslinie (6) der Verzahnung in der Mitte der Schiene (1) angeordnet ist.
- Führungssystem nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Verzahnung (5) durch eine Zahnstange (4) gebildet ist.
- Führungssystem nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass der Laufwagen mindestens ein Fahrgestell (11) aufweist, dessen Schwenkachse (14) durch den Schwerpunkt des Laufwagens (21) bzw. des Fahrgestells (11) und den Kraftangriffspunkt verläuft.
- Führungssystem nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass die Führungselemente (15.1 bis 15.3) eine Dreipunktführung bilden.
- Führungssystem nach Anspruch 11, dadurch gekennzeichnet, dass zwei auf derselben Führungsfläche geführte Führungselemente (15.1, 15.2) federnd gelagert sind.
- Führungssystem nach einem der Ansprüche 7 bis 12, dadurch gekennzeichnet, dass Laufrollen (19.1 bis 19.4) vorgesehen sind, welche an der Schiene (1) von oben und von unten angreifen.
- Führungssystem nach einem der Ansprüche 7 bis 13, dadurch gekennzeichnet, dass die Schiene (1) im Wesentlichen streifenförmig ausgebildet und an einem Träger (10) befestigt ist, welcher die Stabilität bzw. Tragfähigkeit gewährleistet.
- Führungssystem nach einem der Ansprüche 7 bis 14, dadurch gekennzeichnet, dass die Schiene (1) sowohl gerade als auch links- und rechtsgekrümmte Abschnitte aufweist.
- Schiene (1) für ein Führungssystem nach Anspruch 7, welche zwei seitliche Führungsflächen (2.1, 2.2) und eine Verzahnung (5) hat, wobei die Verzahnung (5) einen vordefinierten konstanten Abstand zu mindestens einer der seitlichen Führungsflächen (2.1, 2.2) hat und wobei die Verzahnung (5) bezogen auf die genannten Führungsflächen (2.1, 2.2) seitlich nach links oder nach rechts zeigt, dadurch gekennzeichnet, dass eine der Verzahnung (5) zugeordnete Teilungslinie (6) durch eine Mittelsenkrechte (7) des Querschnitts der Schiene (1) verläuft.
- Schiene nach Anspruch 16, dadurch gekennzeichnet, dass sie im Wesentlichen streifenförmig ausgebildet ist und an einem Träger (10) befestigt ist, welcher die Stabilität bzw. Tragfähigkeit gewährleistet.
- Schiene nach einem der Ansprüche 16 oder 17, dadurch gekennzeichnet, dass sie sowohl gerade als auch seitlich links- und rechtsgekrümmte Abschnitte aufweist.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59811424T DE59811424D1 (de) | 1998-04-16 | 1998-04-16 | Führungssystem mit einem auf einer Schiene geführten Laufwagen |
EP98810330A EP0950597B1 (de) | 1998-04-16 | 1998-04-16 | Führungssystem mit einem auf einer Schiene geführten Laufwagen |
JP13460799A JP4560748B2 (ja) | 1998-04-16 | 1999-04-07 | レール上において案内される走行車を有する案内システム |
US09/291,976 US6220174B1 (en) | 1998-04-16 | 1999-04-15 | Guidance system with a truck guided on a rail |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98810330A EP0950597B1 (de) | 1998-04-16 | 1998-04-16 | Führungssystem mit einem auf einer Schiene geführten Laufwagen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0950597A1 EP0950597A1 (de) | 1999-10-20 |
EP0950597B1 true EP0950597B1 (de) | 2004-05-19 |
Family
ID=8236040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810330A Expired - Lifetime EP0950597B1 (de) | 1998-04-16 | 1998-04-16 | Führungssystem mit einem auf einer Schiene geführten Laufwagen |
Country Status (4)
Country | Link |
---|---|
US (1) | US6220174B1 (de) |
EP (1) | EP0950597B1 (de) |
JP (1) | JP4560748B2 (de) |
DE (1) | DE59811424D1 (de) |
Cited By (1)
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DE20318932U1 (de) * | 2003-12-04 | 2005-04-14 | Systec Pos-Technology Gmbh | Transportwagen mit gefederten Rollen |
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US7165497B2 (en) * | 2002-10-07 | 2007-01-23 | E-Z-Rect Manufacturing Ltd. | Track system for mobile storage apparatus |
CA2515459C (en) * | 2003-03-03 | 2012-05-15 | Tri Tool Inc. | Cutting tool and track guidance system |
US7467723B2 (en) * | 2005-03-18 | 2008-12-23 | Zaguroli Jr James | Electric motor driven traversing balancer hoist |
GB0608279D0 (en) * | 2006-04-26 | 2006-06-07 | A & C Ltd | Camera Track And Dolly Systems |
US7490710B1 (en) | 2006-08-19 | 2009-02-17 | Wes-Tech Automation Solutions, Llc | Flexible manufacturing system having modular work stations |
JP5008389B2 (ja) * | 2006-12-13 | 2012-08-22 | 株式会社 オチアイネクサス | 搬送装置 |
CN103144330A (zh) * | 2011-12-07 | 2013-06-12 | 软控股份有限公司 | 轮胎三鼓成型机及其物料输送方法 |
DE102012009062A1 (de) * | 2012-05-09 | 2013-11-14 | Thyssenkrupp System Engineering Gmbh | Transporteinheit und Transportsystem |
US9926753B2 (en) * | 2014-05-16 | 2018-03-27 | Nabors Industries, Inc. | Parking system for a pipe racker on a drilling rig |
JP6724660B2 (ja) * | 2016-08-31 | 2020-07-15 | 前田建設工業株式会社 | 資機材の搬送装置、及び資機材の搬送方法 |
KR101904117B1 (ko) * | 2017-03-14 | 2018-10-04 | 주식회사 세진아이지비 | 가이드 모듈 및 그를 구비하는 구동장치 |
JOP20190027A1 (ar) * | 2017-06-14 | 2019-02-21 | Grow Solutions Tech Llc | نظام و طريقة مسار لتوفير مسار لعربة صناعية |
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CN111419406A (zh) * | 2020-04-29 | 2020-07-17 | 哈尔滨思哲睿智能医疗设备有限公司 | 一种导轨装置及医用机器人 |
CN113620171B (zh) * | 2021-07-20 | 2022-03-18 | 中国矿业大学 | 一种适用于大坡度的单轨吊可分离式齿轨驱动装置 |
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IT1256189B (it) * | 1992-12-03 | 1995-11-29 | Giorgio Deandrea | Impianto di trasporto a rotaia sospesa con trazione migliorata |
JPH07156794A (ja) * | 1993-11-30 | 1995-06-20 | Kito Corp | 搬送装置 |
US5562043A (en) * | 1994-11-17 | 1996-10-08 | Valley Systems, Inc. | Rail and carriage system with magnetically adhered plastic track |
US5924365A (en) * | 1995-05-26 | 1999-07-20 | Telelift Gmbh | Conveyor system with conveyor carriage running on rails |
JP3556366B2 (ja) * | 1995-12-24 | 2004-08-18 | 信行 坪井 | 走行案内装置とそのガイドレール |
JPH09272432A (ja) * | 1996-04-08 | 1997-10-21 | Kensetsusho Chubu Chiho Kensetsukyoku | 資材運搬システム |
US5676061A (en) * | 1996-04-10 | 1997-10-14 | Hk Systems, Inc. | Carrier cell for a monorail sortation system |
US5735214A (en) * | 1996-12-27 | 1998-04-07 | Tsuboi; Nobuyuki | Streamline track system with carriers and rail |
-
1998
- 1998-04-16 EP EP98810330A patent/EP0950597B1/de not_active Expired - Lifetime
- 1998-04-16 DE DE59811424T patent/DE59811424D1/de not_active Expired - Lifetime
-
1999
- 1999-04-07 JP JP13460799A patent/JP4560748B2/ja not_active Expired - Fee Related
- 1999-04-15 US US09/291,976 patent/US6220174B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20318932U1 (de) * | 2003-12-04 | 2005-04-14 | Systec Pos-Technology Gmbh | Transportwagen mit gefederten Rollen |
Also Published As
Publication number | Publication date |
---|---|
JP4560748B2 (ja) | 2010-10-13 |
DE59811424D1 (de) | 2004-06-24 |
EP0950597A1 (de) | 1999-10-20 |
US6220174B1 (en) | 2001-04-24 |
JP2000052978A (ja) | 2000-02-22 |
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