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US3164247A - Apparatus for guiding wide belts - Google Patents

Apparatus for guiding wide belts Download PDF

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Publication number
US3164247A
US3164247A US152303A US15230361A US3164247A US 3164247 A US3164247 A US 3164247A US 152303 A US152303 A US 152303A US 15230361 A US15230361 A US 15230361A US 3164247 A US3164247 A US 3164247A
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US
United States
Prior art keywords
belt
belts
grooves
groove
movement
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
Application number
US152303A
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English (en)
Inventor
Raymond L Hall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ski Dek Corp
Original Assignee
Ski Dek Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ski Dek Corp filed Critical Ski Dek Corp
Priority to US152303A priority Critical patent/US3164247A/en
Priority to GB42875/62A priority patent/GB996850A/en
Priority to DES82427A priority patent/DE1204580B/de
Application granted granted Critical
Publication of US3164247A publication Critical patent/US3164247A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/02—Belt- or chain-engaging elements
    • B65G23/14—Endless driving elements extending parallel to belt or chain
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C19/00—Design or layout of playing courts, rinks, bowling greens or areas for water-skiing; Covers therefor
    • A63C19/10—Ice-skating or roller-skating rinks; Slopes or trails for skiing, ski-jumping or tobogganing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
    • B65G15/64—Arrangements for supporting or guiding belts, e.g. by fluid jets for automatically maintaining the position of the belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors 
    • B65G39/10—Arrangements of rollers
    • B65G39/12—Arrangements of rollers mounted on framework
    • B65G39/16—Arrangements of rollers mounted on framework for aligning belts or chains

Definitions

  • the present invention relates to a method of and apparatus for controlling a continuous moving web and more particularly to an improved apparatus for maintaining a wide belt in a substantially straight path.
  • the present invention may have other uses it is particularly adapted for and is shown applied to an apparatus for simulating a natural ski slope.
  • the artificial ski slope comprises an inclined deck Aand a continuous belt of a material having a low coehcient of friction, such as a nylon pile fabric, which moves up the deck at a substantial rate of speed.
  • the belt is mounted on rollers at the top and bottom of the slope and thus forms a continuous web.
  • the belt has a considerable width of, for example, sixteen feet and a length of, for example, thirty feet.
  • the total weight of such belt is approximately ifteen hundred pounds and moves at speeds which may vary between tive and twenty miles an hour at'the option of the skier.
  • Such an artificial ski slope gives the person skiing ⁇ on the belt a sensation' of moving down the slope which'simulates actual skiing on a naturalV ski slope.
  • ⁇ A person using the ski slope may perform conventional maneuvers, such as plowing to reduce speeds, Christiana turns, jump turns, andthe like, and such maneuvers are apt to lproduce a resultant force onVV the belt tending to move it laterally in one or 4the ⁇ other- ⁇ of two directions.
  • the belt may have an ⁇ inherent characteristic tending to cause it to drift laterally in either. direction.
  • Gne of the objects of the present invention is to provide an improved method of and -apparatusfor controlling the path of movement of a continuous web which utilizes the energy Vin the moving webitself to provide the force required tochange its direction.
  • v Y t Another object is to provide a-method of and apparatus for maintaining a moving belt in a substantially straight lpath by directing an auxiliary control belt between it and ratus of the type indicated which is of simple and compact construction, economical to manufacture and Aone whic
  • FIGURE l is a side elevational view of an artificial ski slope incorporating the novel web controlling device of the present invention
  • FIGURE 2 is a plan view of the simulated ski slope, partly in section, and showing a plurality of auxiliary control belts operating between the main belt and V- grooves in a supporting roller to maintain the main belt in a substantially straight path;
  • FIGURE 3 is an enlarged sectional view of the lower roller in side elevation and showing the auxiliary control belts seated in the grooves between the main belt and its supporting roller when the main belt is tracking properly;
  • FIGURE 4 is a sectional plan of the lower roller and showing the three different directions that the auxiliary control belts may feed toward the V-grooves in the supporting roller;
  • FIGURE 5 is a sectional view of a portion of the left hand end of the supporting roller and showing one V-groove and the manner in which the upper course of the main belt is shifted toward the right when the auxiliary control belt feeds from the left toward the right;
  • FIGURE 6 is a view similar to FIGURE 5 showing the manner in which the upper course of the main belt is shifted towardthe left when the auxiliary control belt- -y feeds from the right toward the left; v
  • FIGURE 7 is an enlarged sectional View through one z of the grooves to showthe ysmoothlining of an antifriction material on the inclined sides of the groove;
  • FIGURE 8 is a transverse sectional'view taken on line i 3 8 of FIGURE 2 vto show an auxiliaryfcontrolbelt between the main belt to'be controlled and supporting roller rality of pivotally mounted depending armsfor the guideV pulleys and Yfeele'rs;
  • FIGURE 11 is a section taken on line 11--11 of FIG- URE l0 to show the bracket for mounting the depending pivoted arm carrying the feelers ⁇ at one end of the sliding Y control bar; and y FIGURE l2 is a partial sectional View taken on linev iZ-'iZ of FIGURE 10 to show the bracket for pivotally mounting one of the depending arms mounting a guide
  • the method of the present invention comprises the steps ofi-sensing any change in the direction of movement of a web to be controlled, such as the wide belt of an artificial ski slope, and utilizing such change in direction to change the position of a belt guide for guiding one or more narrow control belts between the belt to be controlled and a V-shaped groove in a web supporting roller and at-an angle to the direction of movement of the main belt.
  • the narrow control belt is guided atv an angle to the direction of movement of the main belt from the right toward the left; if the beltrtends to move toward the left, the narrow belt is guided at an angle to the mainy I belt from. the left toward the right; and if the belt is tracking properly the control belt is guided in a direction parallel to the main belt.f
  • the langular movement of the auxiliary control belt is y,then utilized to bodily shift the A main belt to a corrective position and the rate of shifting' degree ofthe angle of the auxiliary smooth inclined sides to present a minimum frictional resistance.
  • the sides ofthe. grooves may be coated with material having' a low coefficient of friction
  • the method of controlling in accordance with the present invention untilizes the energy in the web or belt itself to control and change its direction of movement.
  • a belt to be controlled moves toward and around a supporting roller it drives the auxiliary control belt with it in the same direction and the force and weight of the main belt wrapping around its supporting roller forces or jams the auxiliary control belt in to the V-shaped groove in the supporting roller.
  • Such movement of the auxiliary control belt inwardly along the inclined side ofthe groove cams it laterally and the lateral movement is transmitted by the frictional engagement of its .outer periphery with the belt to be controlled to, in turn,
  • the ski slope comprisesan inclined deck 13 having; pulley rollers 14 and 15 at the top and bottom and a continuous belt 16 vsupported by the rollers and movable upcthe surface 'of theinclined deck.
  • Deck 13 is supported from a iioor 17 by spaced stanchions 18, 1li-a, llb and 18C and the upper roller 14 is driven from a combined motor ,and variable speed transmission 19 through a belt 2b.
  • y Roller-14 drives the upper course of the belt 16 upy wardly over the top of the deck 13 and the roller has friction strips 25 between it and the belt.
  • the lower course of belt ltunderlies the deck and is supported by rollers 21 and 21a on the stanchions 1S.
  • Horizontal platforms 22 and 23 are provided at the upper and lower ends of the deck 13 and the ski slope has side rails 24, only one being vshown in FIGURE 1,"at the sides ofthe moving belt 16.
  • Vplate is the upper course of belt 16.
  • the beams 29 and fill are supported by the stanchions 18 andthe latter are cross braced to'provide a rigid structure.
  • Belt 16 comprises a material having a low'coefhcient of friction, such as nylon pile fabric, so that it slides -Ielative to the skis
  • the deck may be inclined at an angle of,for example 11 to the horizontal and may l be driven at a. speed of, for example nine miles per hour.
  • the con-trol means V comprises at least .one auxiliary control belt 35 .between the main belt 16 and a lgroove 36 inV one of the. rollers 14 and 15 supporting the belt.
  • the outer periphery of the auxiliarycontrol belt 35 frictionally engages the lbeltld to be controlled so that it, in effect, forms a dependingrib on the main belt, but without rigid attachone direction or the other by the inclined sides of the groove 36 depending upon its angular direction with respect to its path of movement of the belt to be controlled.
  • the direction of movement of the auxiliary control belt 3S is changed in response to any lateral movement of the main belt to guide the auxiliary control belt at the desired angle to the path of movement of the main belt 16.
  • the auxiliary control belt 35 is adjusted so as to advance at an angle to the direction of movement of the main belt which is opposite to the direction in which the main belt tends to drift.
  • the angular movement of the control belt then bodily moves the main belt to a corrective position by the ritcional engagement of the two belts.
  • a plurality of the auxiliary belts 35 are provided with corresponding grooves 36 in the supporting roller 14.
  • the grooves 36 and 36a in the periphery of the lower roller 15 are V-shaped with a relatively wide angle of slope.
  • the sides of the grooves 36 are inclined inwardly toward each other and have a smooth anti-friction surface.
  • the sides of the grooves 36 are lined With an anti-friction material 37, such as Tetlon, to otter a minimum resistance to the sliding movement of the sides of the belt as it seats in a groove.
  • the rollers 14 and 15 may be formed of pipe sections with the grooves 36 formed in the wall of the roller 15, or a thin walled tube may be built-up with a wrapping into which the grooves are cut, or cylindrical sections may be slid into position over the outer periphery of the pipe sections and welded thereto with the sections being so shaped as to form the grooves.
  • the hollow rollers 14 and 15 ⁇ have discs 38 welded therein and mounting axles 39 vat its opposite ends.
  • the auxidary control belts 35 are of a narrow V-shaped form in cross-section so that the inclined sides cooperate with the smooth sides il@ and 41 of the groove 36 and have a peripheral friction surface 42 see FIGURE 7.
  • auxiliary control belts 3S are in the form of a continuous loop which is captured between the main belt 16 and groove 36 in the supporting roller 15.
  • Each auxiliary belt 35 is driven by the main belt lo, due to the frictional engagement of its periphery 42 therewith, and is jammed into its respective groove 36 by the force of the surrounding belt 16, but the smooth sides 4Q and 41 of the groove 36 cause the sides of the auxiliary belt to freely slide into and seat in the groove.
  • the auxiliary control belts 3S may be actuated in unison to move at an angle to the direction of movement to the main belt, as shown in FIGURE 4.
  • FIGURE 5 illustrates the manner in which the main belt 16 is shifted toward the lett when the auxiliary control belt is directed toward its groove 36 from the right toward the left in an angular direction to the path of movement of the main belt.
  • FlGURE 2 illustrates the manner in which one or a plurality of auxiliary control belts 35 are guided to control the angular direction in which they move toward their respective grooves 36.
  • the guide means for guiding the auxiliary control belts '35 comprises a grooved pulley 45 for each control belt 3S, but other forms of guides may be used.
  • Each pulley 45 ismounted to rotate and is engaged by an auxiliary control belt.
  • the plurality of grooved pulleys l5 and 45a for the auxiliary belts l5 and 45a are connected together for movement as a unit by a connecting bar 46.
  • Bar 46 has depending feelers 47 and 48 at its opposite of the belt 16 to be controlled.
  • any lateral movement of the belt 16 in either direction is transmitted to the bar 46 which moves the pulleys 45 and 45a in the same direction that the belt tends to drift.
  • Such movement of the pulleys 45 and 45a then directs the auxiliary control belt 35 at an angle to the direction of movement to the belt 16 and in a direction opposite the direction which the main belt tends to drift.
  • the auxiliary control belts 35 depend from themain belt 16 at an angle to the direction of movement of the main belt and are cammed laterally by the grooves 36 in the roller 15 to bodily move both belts laterally due to their frictional engagement.
  • Guide pulleys 45, bar 46 and feelers 47 and 48 may be mounted in any suitable manner for operation by any suitable sensing mechanisms.
  • the guide pulleys'45, 45a, etc. are mounted on a transverse frame plate 50 extending between beams 29 and 30 below the deck 13.
  • each grooved guide pulley 45 is mounted at the lower end of a depending arm 51 pivotally mounted at its upper end on a pin 52 projecting forwardly from a bracket 53 on the horizontal frame plate 50.
  • the lower end of the depending arm 51 is bifurcated to form a fork having side arms 54 and 55 straddling its pulley 45 and mounting a pivot pin 56 on which the pulley rotates.
  • Each arm 51 has a pivot pin 57 projecting from one side on which a cross head 5S pivots.
  • the cross heads 5S for the plurality of arms 51 are connected by the bar 46 extending through the cross heads and attached thereto by set screws59.
  • the bar ⁇ 46 moves laterally in one direction it acts through the pins 57 to swing the arms 51 on pivots 52 and move the groove pulleys 45 in unison to one side or the other.
  • the feelers 47 and 48 at opposite ends of the bar 46 each comprises a pair of rollers 62 and 63, as shown in FIGURES 8 and ll.
  • the rollers 62 and 63 are mounted to 'rotate on and depend vertically from a'plate 64, and
  • the plate is attached to the lower end ⁇ of a swinging arm Vviewed in FIGURE 2, itmoves the guide pulleys 45 and a to the left and thereby directs the auxiliary control belt toward its groove 36 from the left toward the right to move the belt backto its proper tracking position.
  • the fve'eler ⁇ 43 is moved to the right the bar 46 and guide pulleys .45..aremoved to the right to directthecontrol belts.35 toward the grooves 36 at an anglefrom right to. left to correct the direction of movement of the main belt.' ⁇
  • One form of construction having vnow been describedl in Vdetail,'1the mode of operation is next explained. y Assuming for the purpose of description that the ski slope 12 is in operation with the belt 16 being driven by the motor 19 through belt Ztl andfupper roller 14 and that a person is skiing on the moving belt. If the upper course of the belt 16mm/es laterally at any time dur- Such movement ofthe bar 46 is transically in an angular directionv from the left toward the right.
  • each guide pulley 45 is located to position the outer periphery ofv the auxiliarycontrol belt 35 in contact with or closely adjacent the inside of the lower course of the main belt 16 to-be controlled.
  • the auxiliary control belt 35 moves toward its groove 36 in roller 15 its outer periphery frictionally engages the main belt 16 to form a projecting rib extending at an angle to its rdirection of movement.
  • the wrap of each auxiliary guide belt 35 is located in its groove 36, the angular portion approaching the groove tends to move in a straight line and ride up on the left hand side of the groove.
  • the auxiliary guide belt 35 immediately slides down the smooth side di of the groove as it is jammed into the groove by the surrounding wrap of the main belt 16.
  • the belt16 to be controlied is much larger and heavier than the auxiliary control beit 35 so that it jams the auxiliary belt into the groove, and as the periphery of the auxiliary control belt is in tight frictional contact with the outer beit the inclined side of the groove 36 cams both belts to the right as a unit in the manner illustrated in FIGURE 5.
  • the corrective shifting ofthe main belt i6 may occur between the guide pulley 45 and roller v15 and in other instances thecorrective shift of the belt may occur only at the wrapped portion of the auxiliary control belt 315 as it seats in its groove 36.
  • the auxiliary guide belt 35 bodily moves the main belt 16 in the opposite direction, or to the right,
  • Such correcive movement of the main'belt 16 then runs throughV the uppercourse and lower course and actuatcs the feeier 43 to move the bar 46 in thefopposite direcz tion or to the right as viewed in FIGURE 2.
  • Such movement of thebar is transmitted through the depending arms Si and guide pulleys 45 to move them blaclt ⁇ into ya pathy parallel to the direction of movement of the main belt, as illustrated in FIGURES 2 and 3.
  • the main belt 16 and auxiliary control belts 35 When the main belt 16 and auxiliary control belts 35 'move parallel to the direction of the main belt the auxiliary control belts tend to hold the main belt in a straight path.
  • Suchfan angular relationof the auxiliary control beltsy 45 then cooperate ⁇ with the main ing operation'the lateral movement is transmitted tothe lower course so ⁇ that the edge of the beit actuates feel'er 47 or 48'v laterally as, for example, to the left, as shown in FIGURE 5.
  • the'.presentinvention provides an improved apparatus for maintaining Yacontinuvous web a"substantially straight path'by utilizing the energy otr'the webitself to provide the force required to change its direction of movement.
  • the present invention provides an improved apparatus for maintaining the alignment of a relatively wide belt by directingran auxiliary control belt between it and a groove in a supporting roller in a direction'opposite the direction that the belt to be controlled tends ,todrift Y Y lt will further be observed thatthe present inventionprovides an Yimproved apparatus 'for tracking 'the moving belt of anv artificial ski slope Whichutilizesvany lateral movestruction, economical to manufacture and one which is reliable in performing its intended function.
  • lfApparatus for controlling a continuous web cornprising a roller in contact with the web and having at least one groove therein with smooth sides inclined inwardly towards each other, an ⁇ auxilary belt mounted for movement between the web and groove in the roller, said belt having opposite sides adapted to contact and slide on the smooth sides of the groove and a friction surface at its outer periphery for frictional Contact with the web to be controlled, and a guide spaced from the auxiliary belt having opposite sides adapted to contact and slide inwardly on the smooth sides of the groove and a friction surface at its outer periphery for frictional contact with the web to be controlled, a belt guide spaced from the roller, .and means responsive to the lateral movei i ment of the continuous web and connected to the belt guide for moving the latter laterally in the same direction astheweb.
  • a wide belt of a material having a lowcoelcient of fric-v .tion andprirne mover'means for drivingone ofthe rollers to causefthe VWide belt to move upwardly along the topof the deck the combination with said apparatus of belt aligning means for maintaining the wide belt in a substantially straight path comprising a il-shaped groove in one of the rollers, an auxiliary tf-belt between the wide belt and groove in the roller, said groove and auxiliary control belt having relatively smooth sides to adapt the auxiliary belt to slide downwardly into the groove and said auxiliary belt having a friction surface at its periphery, and a guide spaced from the groove in the roller for directing the auxiliary control belt toward the groove in the same and opposite angular directions to the path of movement of the wide belt to be controlled, and means responsive to lateral movement of the wide belt for moving the auxiliary belt guide guide laterally relative to the V-groove in the roller.
  • the supporting roller for the wide belt is provided with a plurality of spaced V-shaped grooves, an auxiliary control ⁇ beltrfor each of the grooves, and the means responsive to lateral movement of the'wide belt comprising a control bar mounted to move laterally, said bar having a guide for each control belt, and said means responsive to lateral movement of the wide belt being connected4 to move the control bar inthe same direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Escalators And Moving Walkways (AREA)
US152303A 1961-11-14 1961-11-14 Apparatus for guiding wide belts Expired - Lifetime US3164247A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US152303A US3164247A (en) 1961-11-14 1961-11-14 Apparatus for guiding wide belts
GB42875/62A GB996850A (en) 1961-11-14 1962-11-13 Method and apparatus for controlling wide belts
DES82427A DE1204580B (de) 1961-11-14 1962-11-13 Steuervorrichtung zum Ausrichten eines endlosen umlaufenden Bandes

Applications Claiming Priority (1)

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US152303A US3164247A (en) 1961-11-14 1961-11-14 Apparatus for guiding wide belts

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US3164247A true US3164247A (en) 1965-01-05

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408067A (en) * 1966-05-19 1968-10-29 Raymond E. Armstrong Sking simulator device
US3489408A (en) * 1965-07-13 1970-01-13 Harold E Goodrich Simulated surf and surfboard
US3814417A (en) * 1971-08-20 1974-06-04 Mogul Leisure Prod Ltd Ski and ski practice machine
WO1989002771A1 (en) * 1987-09-22 1989-04-06 Kevin Stewart Ferris Sports apparatus
AU673815B2 (en) * 1987-09-22 1996-11-28 Ski Trac Australia Pty Limited Sports apparatus
WO2000033924A3 (en) * 1998-12-07 2000-09-14 James L Rodnunsky Ski and snowboard simulator
WO2002094396A1 (en) * 2001-05-23 2002-11-28 Ross Alexander Campbell Moveable activity surface
US20100147655A1 (en) * 2008-12-15 2010-06-17 Pitney Bowes Inc. Adjustable item transport

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9404361D0 (en) * 1994-03-03 1994-04-20 Catlin William P Amusement rides

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251927A (en) * 1937-05-11 1941-08-12 Firm Riddell Skislide Company Slide for sport, amusement, and artistic purposes
US2727400A (en) * 1952-07-28 1955-12-20 United States Steel Corp Apparatus for automatically centering a moving elongated object
US2742288A (en) * 1953-06-04 1956-04-17 Jacques A Brunel Chute for sking and tobogganing
US2983364A (en) * 1958-07-29 1961-05-09 Goodman Mfg Co Training linkage assembly for a belt conveyor
US2995945A (en) * 1953-12-23 1961-08-15 United States Steel Corp Automatic self-centering pulleys for belt conveyors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE490234C (de) * 1927-10-22 1930-01-27 Banska A Hutni Spolecnost Regeleinrichtung fuer Foerderbaender mit seitlichen Anschlagsrollen
FR770320A (fr) * 1933-06-06 1934-09-12 Courroie transporteuse perfectionnée
DE643102C (de) * 1935-03-28 1937-03-24 Hoesch Koeln Neuessen Akt Ges Vorrichtung zum selbsttaetigen seitlichen Lenken von Foerderbaendern, insbesondere Stahlfoerderbaendern
DE868726C (de) * 1951-05-08 1953-02-26 Arthur Habermann Bergwerksmasc Vorrichtung zum Verhindern des seitlichen Wanderns von Foerderbaendern
FR1230560A (fr) * 1959-03-31 1960-09-16 Monte Vite Sa L Transporteur à bande perfectionné, nouvelle bande transporteuse et procédé pour son obtention

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251927A (en) * 1937-05-11 1941-08-12 Firm Riddell Skislide Company Slide for sport, amusement, and artistic purposes
US2727400A (en) * 1952-07-28 1955-12-20 United States Steel Corp Apparatus for automatically centering a moving elongated object
US2742288A (en) * 1953-06-04 1956-04-17 Jacques A Brunel Chute for sking and tobogganing
US2995945A (en) * 1953-12-23 1961-08-15 United States Steel Corp Automatic self-centering pulleys for belt conveyors
US2983364A (en) * 1958-07-29 1961-05-09 Goodman Mfg Co Training linkage assembly for a belt conveyor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3489408A (en) * 1965-07-13 1970-01-13 Harold E Goodrich Simulated surf and surfboard
US3408067A (en) * 1966-05-19 1968-10-29 Raymond E. Armstrong Sking simulator device
US3814417A (en) * 1971-08-20 1974-06-04 Mogul Leisure Prod Ltd Ski and ski practice machine
WO1989002771A1 (en) * 1987-09-22 1989-04-06 Kevin Stewart Ferris Sports apparatus
AU673815B2 (en) * 1987-09-22 1996-11-28 Ski Trac Australia Pty Limited Sports apparatus
WO2000033924A3 (en) * 1998-12-07 2000-09-14 James L Rodnunsky Ski and snowboard simulator
WO2002094396A1 (en) * 2001-05-23 2002-11-28 Ross Alexander Campbell Moveable activity surface
US20100147655A1 (en) * 2008-12-15 2010-06-17 Pitney Bowes Inc. Adjustable item transport
US8096410B2 (en) * 2008-12-15 2012-01-17 Pitney Bowes Inc. Adjustable item transport

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DE1204580B (de) 1965-11-04
GB996850A (en) 1965-06-30

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