US3710727A - Air beam way and switching system - Google Patents

Air beam way and switching system Download PDF

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Publication number
US3710727A
US3710727A US00011557A US3710727DA US3710727A US 3710727 A US3710727 A US 3710727A US 00011557 A US00011557 A US 00011557A US 3710727D A US3710727D A US 3710727DA US 3710727 A US3710727 A US 3710727A
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train
stabilizer
support
continuous
track
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E Svensson
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    • 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
    • E01B25/08—Tracks for mono-rails with centre of gravity of vehicle above the load-bearing rail
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B13/00—Other railway systems
    • B61B13/04—Monorail systems

Definitions

  • ABSTRACT An air beam structure for a passenger train is described which provides a train support beam having an inverted U-shaped cross section to minimize torsional effects, columnar supports for said beam diverging from an integral base and a stabilizer track centrally mounted on the top surface of the train support beam.
  • the stabilizer track includes a head having stabilizer wheel running surfaces on its undersides, and portions of the stabilizer track are flexible and may be bent between diverging train support beams to allow switching.
  • This invention relates to high speed passenger railways, and particularly to an aerial beam way which allows switching of a train running thereon at high speeds, and which may be constructed quickly and easily by preforming large segments thereof.
  • the present invention relates to a passenger train beam way having uniform components which may be precast and thus installed rapidly with a minimum of expense. These components include support units and suspended units which are alternately connected end to end to form a continuous train support beam.
  • the train support beam includes running surfaces spaced parallel on its top and an upwardly extending central stabilizer track having an upwardly and outwardly extending head which includes stabilizer wheel tracks on its undersides.
  • the train support beams are of inverted U- shaped cross section to reduce torsional stresses within the beams.
  • High speed switches are also disclosed ineluding a Y-shaped train support beam having a flexible stabilizer mounted on its top having one end fixed near the foot of the Y and its other end movable between the arms of the Y-shaped support beam. Pulleys and cables are provided to move the free end of the flexible stabilizer between switching positions.
  • FIG. 1 is a sectional side elevation view of a typical air beam way constructed according to the present invention including a train running thereon.
  • FIG. 2 is a plan view of one embodiment of a switch made according to the present invention including the stabilizer track shown in dotted line in the switched position.
  • FIG. 3 is a partial sectional view taken along line 3 3 in FIG. 2.
  • FIG. 4 is a sectional view taken along line 44 in FIG. 3.
  • FIG. 5 is an exploded side elevation view of an expandable connection joint between beam way sections, including a portion of the shelf of the suspended beam broken away to show the slot therein.
  • FIG. 6 is an exploded side elevation view of a typical fixed joint connection between beam way sections.
  • FIG. 7 is a plan view of another embodiment of a connection joint made according to the present invention.
  • FIG. 8 is a sectional side elevation view of the connection between a train support column and a train support beam.
  • FIG. 9 is a schematic sectional end view of a rubber wheeled vehicle running on a train support beam, including stabilizer wheels running on the tracks on the undersides of the stabilizer head.
  • FIG. 10 is a schematic sectional plan view of the train and beam way structure of FIG. 9.
  • FIG. 11 is a schematic sectional side elevation view of the train and beam way structure of FIG. 9, including a driver.
  • FIG. 12 is a partial schematic sectional end view of a train and beam way structure made according to the present invention, including steel wheels on the train and steel tracks embedded in the beam way.
  • FIG. 14 is a partial schematic sectional end view of a ground level beam way showing a train moving on a cushion of air and air cushion stabilizers associated with the stabilizer head.
  • the beam way system comprises support sections 22 and intermediate suspended sections 24 connected endwise therebetween to 'form a continuous beam way on which atrain 26 may run at high speeds.
  • the beam way structure includes'a train support beam 28, having a stabilizer track 30 mounted centrally on its top, and a base comprising poured in place portion 32 having upwardly extending foundation bolts 34 mounted therein and preformed portion 36 having upwardly and outwardly diverging columns 38 extending therefrom.
  • the column supporting base 36 is connected to the poured in place portion of the base 32 by means of the foundation bolts and associated nuts 40, however it is understood that other conventional fastening means may be used to provide a solid foundation.
  • the train support beam has an inverted U-shaped cross section and includes a top portion 42 with downwardly depending side portions 44 mounted near its edges. Expanded foot portions 45 are provided near the bottom of sides 44 and include prestressed cables and anchors (not shown) to strengthen the beam.
  • the height of the downwardly depending side portions may be varied depending on the length of the beam, a deeper side portion being needed to support a longer beam. This feature allows greater vertical clearance beneath the beam to be obtained where needed in crossing streets or conventional railroad beds, by shortening the length of the span.
  • This support beam has an ideal torsional profile in that the shear center of a structure having an inverted U or inverted channel cross section lies above the structure itself and thus all forces which act through the shear center have no torsional effect on the support beam.
  • the stress reducing design of this support beam allows the beam itself to be of lighter weight than prior elevated air beam designs which were required to bear not only the weight of the train but also the additional torsional stresses generated by a train moving therealong.
  • the lightweight construction of the support beam provides for savings in both construction materi als and installation costs, most importantly by allowing the use of prefabrication methods and rapid installation techniques.
  • Stabilizer track 30 is mounted centrally of top portion 42 of the train support beam, and includes upwardly and outwardly extending head 46 having stabilizer tracks 48 mounted on is undersides.
  • the stabilizer track may be made of concrete, steel or a hard plastic. If the stabilizer track is constructed of concrete, metal cap 50 may be fitted on its head to reduce wear or cracking caused by the stabilizer wheels of the train running thereon as will be described hereafter. f
  • Beam way support sections 22 and suspended sections 24 may be constructed of prestressed concrete and may be entirely preformed prior to installation either at the site, or at a plant and transported to the installation site when needed.
  • FIG. 8 illustrates one type of connection between the angular support column 38 and train support beam 28.
  • Column 38 is shown extending into a solid core 52 which fills the channel of the train support beam.
  • Upwardly diverging support columns 38 while not only providing a vertical support component to the train support beam, also provide a horizontal component which counters braking and acceleration forces acting along the track, thereby allowing the columns and ground supports to be of smaller cross section than would be necessary with vertical support columns.
  • This extremely strong but relatively lightweight construction also effects savings in both material and construction costs and allows prefabrication and rapid installation techniques to be used with suspended beam portions 24 having lengths up to 150 feet.
  • FIG. 5 illustrates an expansion joint comprising an upwardly extending pin 54 mounted on step portion 56 of beam 22.
  • Pin 54 is adapted to be inserted in the upwardly extending slot 58 in shelf portion 60.
  • Slot 58 is substantially larger in the longitudinal direction than pin 54 and thus the pin may move freely in the slot in the longitudinal direction when the interconnected beams expand or contract.
  • FIG. 6 illustrates one embodiment of a fixed joint comprising a pair of pins 62 upwardly extending from step 56 and adapted to be inserted in upwardly extending holes 64 in shelf portion 60.
  • Holes 64 and pins 62 are of substantially the same size and shape and thus a firm, non-sliding connecting is obtained when the shelf of beam 24 is mated with the step of beam 22.
  • the fixed joint connections could also be formed by the use of prestressing bolts or cables disposed either vertically, as shown or horizontally or diagonally. In construction of an air beam way it is contemplated that expansion joints will be alternated with fixed joints such that every suspended beam 24 will be joined fixedly to a support member on one end and slidingly to a support member on its other'end.
  • FIG. 7 illustrates still another embodiment of a joint wherein the stabilizer track 30 of support beam 22 extends into a notch in shelf of beam 24 to further stabilize the connection between the beams in the transverse direction.
  • a pair of slidingly connected pins and slots 54 and 58 are shown spaced outwardly from the stabilizer track.
  • Various other arrangements and spacings of pins and associated slots might also be used and are considered to be within the teaching of the present invention.
  • step joints disclosed herein allow suspended beam 24 to be simply dropped into place between support structures 22 during construction of the air beam system. Since support structures 22 need only be bolted to the poured in place foundations 32, construction of the beam way is both simple and rapid.
  • FIG. 2 one embodiment of a switching system for the instant high speed passenger train beam way is disclosed.
  • the system comprises a Y- shaped train support beam 66 which is joined at its foot to a single train support beam 24 and at its arms to a pair of train support beams 24.
  • Flexible stabilizer track 68 has one end fixedly mounted near the foot of Y- shaped train support 66 by, for example, pins 70, while its opposite end is movable between the arms of the Y.
  • FIG. 2 shows stabilizer track 68 in the switched" position in dotted line.
  • Y-shaped support beam 66 includes portions of the standard stabilizer track 30 near each of its extremities and thus the flexible stabilizer track 68 is entirely inward of the Y-shaped train support beam.
  • Flexible stabilizer tracks 68 may be made of steel, aluminum or plastic reinforced fiber glass or other suitable material so long as the material is flexible in the transverse direction and has strength suffic'ient to withstand the forces exerted thereon by the stabilizer elements of a passing train.
  • FIGS. 3 and 4 disclose one embodiment of an apparatus for moving one end of stabilizer track 68 between the arms of the Y-shaped train support.
  • Stabilizer track 68 includes flanged foot 74 depending therefrom, which foot is adapted to be movably inserted in slot 76 in the Y-shaped support beam. Slot 76 runs between the diverging arms of the Y on brace 78. Sliding surfaces 80 which may be either greased metal or plastic are provided along the top edges of channel 76 to allow easy passage of the upper portion of foot 74 therealong.
  • Cable 82 is connected to the central portion of foot 74 at lugs 84 and is trained to run over pulleys 86 and 88. The driving of either or both of these pulleys causes track 68 to flex and move between the arms of the Y-shaped support beam.
  • the compartment 90 is provided within the support beam to hold the pulley drive motor along with the conventional electronic equipment needed to operate a switch automatically, including the signaling equipment therefor.
  • Additional slots 92 and 94 are spaced along the length of stabilizer track 68 which are adapted to receive other feet similar to foot 74 depending from track 68 to guide the movement of the track during switching.
  • Flexible stabilizer tracks 68 may be 75 feet long or longer, and thus the deflection thereof during switching is slight in proportion to the length of the switch and thus trains may operate over this switch at high speeds without undue swaying or jolting of passengers. It is also contemplated that other means such as driven rollers connected directly to the stabilizer track or a hydraulic cylinder and piston arrangement might also be used to deflect the end of this flexible track between the arms of the Y- shaped support beam.
  • Top portion 42 of the train support beam is approximately 5 feet wide for a full scale system and is thus significantly narrower than the train body.
  • the width of the train support beam will be smaller if the air beam system, including the trains, are constructed on a smaller side.
  • Inner wheels 92 and outer wheels 94 are shown running on the top portion of the support beam. These wheels may all be air-filled, or the inner pair may be made of hard rubber and of smaller diameter than the adjacent air-filled wheels, in which case the hard rubber wheels would only contact the running surface in emergencies such as a blow-out or deflation of the air-filled tire.
  • Stabilizer wheels 96 are shown running on the upwardly and outwardly sloping sides 48 of the stabilizer head. For clarity, the conventional supports for these stabilizer wheels have not been shown.
  • the inclined relationship of the stabilizer head and the stabilizer wheels makes overturning of the train impossible, notwithstanding the centrifugal forces and wind which act upwardly on the cars during motion.
  • the inclined surfaces of the stabilizer track generates a vertical force component which biases the drive wheels 92 and 94 downward for improved traction between the wheels and top portion 42 of the train support beam.
  • the upward angulation of the stabilizer prevents an empty train from lifting up a phenomenon which may occur at high speeds, and particularly on curves, causing the wheels to spin.
  • the upward angulation of the stabilizer wheels additionally allows a significant reduction in height of the stabilizer track 30.
  • the instant stabilizer track does not protrude into the train floor itself as was often necessary in prior air beam structures. Protrusion of the track into the train necessitated a wide channel in the bottom of the train to allow for the curvature of the track during switching. Additionally, the low profile of stabilizer track 30 allows for maximization of the interior train space in that provision does not have to be made for the protrusion of the track into the car itself. In a small scale air beam system smaller rubber tires could be used which would not protrude into the car body.
  • a pair of track gripping stabilizer wheels are located both immediately before and aft of the drive wheels 92 and 94. As shown in FIG. 11, this arrangement allows for a minimum of interference with the interior of the train car.
  • Drive and stabilizer wheel systems are located at both ends of each car, but it is contemplated that for a short car only a single pair of stabilizer wheels need be associated with each set of drive wheels.
  • FIG. 12 a train having steel drive wheels 98 is shown.
  • steel tracks 100 are embedded in the top surface of portion 42 to prevent crumbling of the concrete train support beam.
  • the metal tracks 100 were placed in train support beam 28 during pouring. This is the preferred method of construction, although it is possible to mount these tracks, or tracks of different cross section, at a later date.
  • FIG. 13 shows the instant invention adapted for use at ground level with an air cushion train. Air cushions 102 prevent the train from settling onto train support beam 104 while stabilizer wheels 106 also act to drive the train along the track.
  • FIG. 14 discloses another embodiment of the instant invention adapted for use at ground level with an air cushioned vehicle.
  • air cushion stabilizers 108 are also provided for gripping stabilizer head 46. Movement may be imparted to this train by either a conventional airplane propeller or jet engine mounted on the car, or electrical apparatus may be mounted within the hollow stabilizer head 46 or on its outside surface in a linear magnetic propulsion system.
  • an additional embodiment wherein rubber drive wheels are used in conjunction with an air cushion stabilizer is also contemplated.
  • a train beam way system including a plurality of longitudinal train support beams, each such beam comprising a train supporting portion having laterally spaced parallel train running surfaces, and a train stabilizing portion in the form of a track upstanding from said train supporting portion;
  • longitudinal train support beams being interconnected end to end to form at least three continuous laterally spaced parallel train running surfaces;
  • At least one of said support beams being connected at one end to a first continuous train running surface and at its other end to said second and third continuous train running surfaces and including a longitudinal flexible stabilizer mounted thereon;
  • one end of said flexible stabilizer being fixedly connected to said support beam adjacent said first continuous train running surface and the other end of said flexible stabilizer movable between said second and third continuous train running surfaces to direct a train running on said first continuous train running surface to one or the other of said second or third continuous train running surfaces, the extent of movement of the movable end of said flexible stabilizer being substantially greater than the width of each parallel train running surface so that a train on either said running surface is sup ported wholly by the one running surface when over said stabilizer movable end.
  • train stabilizer comprises an upwardly extending rail with an upwardly and outwardly extending head thereon, said head having stabilizer wheel tracks mounted on its upwardly and outwardly diverging sides.
  • the train beam way system of claim 1 including means mounted in said support beam and connected to said flexible stabilizer near its movable end to move said flexible end between said second and third continuous train running surfaces.
  • said support beam includes a cable connected to said flexible stabilizer near its movable end, said cable mounted on a pair of spaced pulleys and adapted to be moved thereon such that the end of said flexible stabilizer may be moved between said second or third continuous train running surfaces.
  • a beam way system for a train comprising a plurality of longitudinal support beams bearing the weight of said train and including longitudinally extending laterally spaced train running surfaces and a centrally disposed longitudinal train stabilizer track on the top surface of said support beams;
  • longitudinal support beams being interconnected end to end to form continuous beam way sections having continuous train running surfaces and a continuous stabilizer track;
  • one of said support beams including a longitudinally flexible, non-weight bearing stabilizer track fixedly connected at one end of said beam to the continuous stabilizer track of a first beam way section adjacent said support beam, the distal end of said flexible stabilizer being movable completely across and alternately connectible with the continuous stabilizer track of second and third beam way sections adjacent said support beam.
  • said stabilizer comprises an upwardly extending rail with an upwardly and outwardly extending head thereon, said head having stabilizer wheel tracks mounted on its upwardly and outwardly diverging sides.
  • train running surfaces include steel tracks, a train running on steel wheels.
  • a beam way system for a train comprising a plurality of support beams bearing the weight of said train connected end-to-end and including a non-weight bearing guide track mounted on top of said beams, base means, pairs of upwardly diverging columns supported by said base means and in turn supporting alternate train support beams, intermediate train support beams being suspended between said supported train support beams, said alternate train support beams being formed integrally with said diverging columns and projecting a substantial distance therebeyond in cantilever fashion, the said intermediate beams being supported solely on the ends of the adjacent train support beams.
  • a beam way system for a train comprising support units and suspended units, said support units comprising a base, support columns connected to said base and upwardly diverging therefrom, a train support beam on said support columns and projecting a substantial distance therebeyond in cantilever fashion, laterally spaced train running surfaces and a centrally disposed upstanding stabilizer mounted on top of said train support beam; said suspended units each comprising a weight bearing train support beam having laterally spaced train running surfaces and a centrally disposed upstanding stabilizer mounted thereon, said suspended units being connected between and supported solely on the ends of adjacent support units.
  • said base includes a first portion cast in place and a second portion having said upwardly diverging support columns mounted thereon and adapted to be connected to said first portion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
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US00011557A 1970-02-16 1970-02-16 Air beam way and switching system Expired - Lifetime US3710727A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815513A (en) * 1972-10-06 1974-06-11 Westinghouse Air Brake Co Vehicle retaining arrangement for a monobeam type of transportation system
US3855938A (en) * 1973-10-01 1974-12-24 Strada Guidata S R L Soc Per Switches or points for tracks for vehicles
US3880084A (en) * 1974-03-11 1975-04-29 Richard Denenburg Removable module train and trackway therefor
US5845581A (en) * 1996-05-07 1998-12-08 Svensson; Einar Monorail system
WO1999051455A1 (en) * 1998-04-08 1999-10-14 Einar Svensson Support structure for elevated railed-vehicle guideway
WO2000027681A1 (en) 1998-11-06 2000-05-18 Einar Svensson Monorail system
US6404836B1 (en) * 1999-02-12 2002-06-11 Westinghouse Electric Company Llc Removable spent fuel handling machine rail
US6450103B2 (en) 1996-05-07 2002-09-17 Einar Svensson Monorail system
US6564516B1 (en) 1998-04-08 2003-05-20 Einar Svensson Support structure for elevated railed-vehicle guideway
US6571717B2 (en) 1998-04-08 2003-06-03 Einar Svensson Y-shaped support structure for elevated rail-vehicle guideway
US20030116692A1 (en) * 2000-09-12 2003-06-26 Dieter Reichel Support for a travel-way of a track guided vehicle
US20060162609A1 (en) * 2005-01-24 2006-07-27 Lew Holdings, Llc Interstate highway train system
EP1726503A2 (de) 1998-11-06 2006-11-29 Einar Svensson Einschienenbahnsystem
US20120265393A1 (en) * 2011-04-15 2012-10-18 Lta Corporation Transportation system including a hovering vehicle
CN105083304A (zh) * 2015-05-07 2015-11-25 芜湖科达新铭丰机电有限公司 一种切割输送车车轮
US10508440B1 (en) * 2019-06-18 2019-12-17 Ales Vlaj Security and transportation system for border barrier
CN112960003A (zh) * 2021-03-16 2021-06-15 浙江宝科智能设备有限公司 一种智能巴士的轨道、车轮组件及轨道与车轮组件的装配方法

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DE2807984A1 (de) * 1977-02-25 1978-08-31 Ingenieria Transito Moderna Einschienenbahn mit entgleisungssicheren, mittels laufraedern und seitlichen fuehrungselementen auf schienenbalken gefuehrten drehschemeln
DE3420260A1 (de) * 1984-05-30 1985-12-05 Krauss-Maffei AG, 8000 München Weiche fuer die fahrbahn einer magnetschwebebahn
ES2007707A6 (es) * 1987-09-02 1989-07-01 Saiz Munoz Manuel Tren monocarril.
DE4322369A1 (de) * 1993-07-06 1995-01-12 Krupp Foerdertechnik Gmbh Personenbeförderungssystem

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US781988A (en) * 1904-02-17 1905-02-07 Charles Whiting Baker Roadway.
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GB976685A (en) * 1962-06-28 1964-12-02 Western Electric Co Improvements in or relating to film resistors
US3345952A (en) * 1966-06-20 1967-10-10 Sidney H Bingham Guideway for high-speed mass transportation systems
US3477080A (en) * 1962-06-01 1969-11-11 Dyckerhoff & Widmann Ag Elevated highway structures of prestressed concrete

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US2997965A (en) 1959-05-01 1961-08-29 Alan B Hawes Elevated railway
GB976865A (en) 1962-02-05 1964-12-02 Alweg Gmbh Improvements in and relating to a beam structure carried on stanchions to form an elevated track for vehicles
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US1305415A (en) * 1919-06-03 steffens
US690787A (en) * 1901-04-17 1902-01-07 John H Spangler Independent operating means for electric switches.
US781988A (en) * 1904-02-17 1905-02-07 Charles Whiting Baker Roadway.
US2997004A (en) * 1957-11-02 1961-08-22 Alweg Forschung Gmbh Monobeam switches
US3012519A (en) * 1960-04-26 1961-12-12 Sidney H Bingham Monorail beam and truck design
US3477080A (en) * 1962-06-01 1969-11-11 Dyckerhoff & Widmann Ag Elevated highway structures of prestressed concrete
GB976685A (en) * 1962-06-28 1964-12-02 Western Electric Co Improvements in or relating to film resistors
US3345952A (en) * 1966-06-20 1967-10-10 Sidney H Bingham Guideway for high-speed mass transportation systems

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815513A (en) * 1972-10-06 1974-06-11 Westinghouse Air Brake Co Vehicle retaining arrangement for a monobeam type of transportation system
US3855938A (en) * 1973-10-01 1974-12-24 Strada Guidata S R L Soc Per Switches or points for tracks for vehicles
US3880084A (en) * 1974-03-11 1975-04-29 Richard Denenburg Removable module train and trackway therefor
US5845581A (en) * 1996-05-07 1998-12-08 Svensson; Einar Monorail system
US6182576B1 (en) * 1996-05-07 2001-02-06 Einar Svensson Monorail system
US6450103B2 (en) 1996-05-07 2002-09-17 Einar Svensson Monorail system
US6564516B1 (en) 1998-04-08 2003-05-20 Einar Svensson Support structure for elevated railed-vehicle guideway
WO1999051455A1 (en) * 1998-04-08 1999-10-14 Einar Svensson Support structure for elevated railed-vehicle guideway
US6571717B2 (en) 1998-04-08 2003-06-03 Einar Svensson Y-shaped support structure for elevated rail-vehicle guideway
AU769394B2 (en) * 1998-11-06 2004-01-22 Einar Svensson Monorail system
WO2000027681A1 (en) 1998-11-06 2000-05-18 Einar Svensson Monorail system
EP1726503A2 (de) 1998-11-06 2006-11-29 Einar Svensson Einschienenbahnsystem
US6404836B1 (en) * 1999-02-12 2002-06-11 Westinghouse Electric Company Llc Removable spent fuel handling machine rail
US20030116692A1 (en) * 2000-09-12 2003-06-26 Dieter Reichel Support for a travel-way of a track guided vehicle
US20060162609A1 (en) * 2005-01-24 2006-07-27 Lew Holdings, Llc Interstate highway train system
US9937912B2 (en) 2011-04-15 2018-04-10 Lta Corporation Transportation system including a hovering vehicle
US9180856B2 (en) * 2011-04-15 2015-11-10 Lta Corporation Transportation system including a hovering vehicle
US20120265393A1 (en) * 2011-04-15 2012-10-18 Lta Corporation Transportation system including a hovering vehicle
US20180194339A1 (en) * 2011-04-15 2018-07-12 JG Entrepreneurial Enterprises LLC Transportation system including a hovering vehicle
US10926754B2 (en) 2011-04-15 2021-02-23 JG Entrepreneurial Enterprises LLC Transportation system including a hovering vehicle
US20210179055A1 (en) * 2011-04-15 2021-06-17 JG Entrepreneurial Enterprises LLC Transportation system including a hovering vehicle
US11661050B2 (en) * 2011-04-15 2023-05-30 JG Entrepreneurial Enterprises LLC Transportation system including a hovering vehicle
US20230249664A1 (en) * 2011-04-15 2023-08-10 JG Entrepreneurial Enterprises LLC Transportation system including a hovering vehicle
CN105083304A (zh) * 2015-05-07 2015-11-25 芜湖科达新铭丰机电有限公司 一种切割输送车车轮
US10508440B1 (en) * 2019-06-18 2019-12-17 Ales Vlaj Security and transportation system for border barrier
CN112960003A (zh) * 2021-03-16 2021-06-15 浙江宝科智能设备有限公司 一种智能巴士的轨道、车轮组件及轨道与车轮组件的装配方法

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GB1353661A (en) 1974-05-22
DE2107152C2 (de) 1984-02-16
FR2080531B1 (de) 1973-06-08
GB1353662A (en) 1974-05-22
FR2080531A1 (de) 1971-11-19
DE2107152A1 (de) 1971-09-09

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