WO1999015346A1 - Ensemble roulette pivotante - Google Patents

Ensemble roulette pivotante Download PDF

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Publication number
WO1999015346A1
WO1999015346A1 PCT/AU1998/000800 AU9800800W WO9915346A1 WO 1999015346 A1 WO1999015346 A1 WO 1999015346A1 AU 9800800 W AU9800800 W AU 9800800W WO 9915346 A1 WO9915346 A1 WO 9915346A1
Authority
WO
WIPO (PCT)
Prior art keywords
castor
pin
wheel
wheel assembly
castor wheel
Prior art date
Application number
PCT/AU1998/000800
Other languages
English (en)
Inventor
Ronald Barry Morris
Original Assignee
Ronald Barry Morris
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
Priority claimed from AUPO9371A external-priority patent/AUPO937197A0/en
Priority claimed from AUPP0240A external-priority patent/AUPP024097A0/en
Priority claimed from AUPP1907A external-priority patent/AUPP190798A0/en
Application filed by Ronald Barry Morris filed Critical Ronald Barry Morris
Priority to AU92461/98A priority Critical patent/AU732100B2/en
Publication of WO1999015346A1 publication Critical patent/WO1999015346A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
    • B60B33/0052—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being inclined

Definitions

  • the present invention relates to a castor wheel assembly as well as apparatus having such an assembly.
  • Castor wheels are commonly used where it is desirable to be able to push along and manoeuvre apparatus.
  • apparatus fitted with castor wheels can be difficult to steer and castor wheels have a tendency to deflect from the path of travel, particularly on rough or uneven surfaces which can exacerbate steering problems .
  • Most people have experienced this problem with shopping trolleys .
  • a method for stabilising movement of a castor wheel in a castor wheel assembly of apparatus to be moved on said castor wheel assembly when the apparatus is rolled along a surface on a castor wheel of the assembly wherein the castor wheel assembly includes a castor pin about which the castor wheel is rotatable and the method involves the step of modifying the apparatus by inclining the castor pin at an angle to the vertical .
  • the modification of the apparatus may involve locating a wedge-shaped element in position to thereby cause the castor pin to be inclined at the desired angle to the vertical.
  • the method allows an existing castor wheel assembly fitted to apparatus to be modified.
  • a castor wheel assembly including a castor wheel and a castor pin about which the castor wheel is rotatable, the castor wheel assembly being adapted such that when attached to apparatus to be moved on said castor wheel assembly, the castor pin is inclined to the vertical .
  • apparatus having at least one castor wheel assembly comprising a castor wheel and a castor pin about which the castor wheel is rotatable, the castor pin being inclined at an angle to the vertical .
  • the invention provides a castor wheel assembly for affixture to apparatus to be moved on said castor wheel assembly, having a castor pin having a longitudinal axis, a rotary yoke rotatably supported on the castor pin for rotation about said longitudinal axis and a castor wheel supported on the rotary yoke by a wheel axle, wherein said castor pin is affixed to said apparatus so as to be inclined to the vertical .
  • the castor pin is provided with at least one wedge-shaped element having an opening provided between convergent faces through which the pin extends thereby to effect said inclined affixture to the apparatus .
  • the wheel axle is a horizontal wheel axle.
  • the invention extends to a wedge-shaped element for inclining a castor pin of a castor wheel assembly, said element having a body provided with a pair of outwardly directed convergent faces and an opening extending from one face to the other, and at least one of said convergent faces is provided with one or more upstanding protrusions adapted to be ensconced within a recess or recesses of the apparatus .
  • protrusion facilitate orientation of the element with respect to the apparatus and/or enhance the strength of the joint formed by the castor pin, wedge-shaped element and apparatus.
  • the apparatus is a shopping trolley having a frame provided with a pair of convergent elongate side beams to which castor assemblies are affixed wherein each side beam is formed of a pair of coextensive substantially parallel spaced apart tubular members extending in a substantially horizontal plane.
  • the castor pin is inclined to the vertical at a negative castor angle. More preferably the angle is in the range of 1° to 25°. It is preferred that the negative castor angle is in the range 5° to 15°, and more preferably 7°.
  • the present invention also provides a castor wheel assembly for affixture to apparatus to be moved on said castor wheel assembly, having a castor wheel, wherein the assembly is affixed to the apparatus so that the castor wheel swivels about on axis inclined to the vertical .
  • apparatus having at least one castor wheel assembly comprising a castor wheel and a castor pin about which the castor wheel is rotatable, the castor pin being inclined at an angle to the vertical .
  • the castor wheel assembly may also comprise a support bracket secured to a retaining pin and on which a support wheel and the castor pin are mounted.
  • the castor wheel and the support wheel are rotatable about the retaining pin, and the castor wheel leads the support wheel when the castor wheel assembly is rolled along a surface on the castor wheel and the support wheel .
  • the support wheel is also located to be unable to come into contact with the castor wheel when the castor wheel is rotated about the castor pin.
  • a castor wheel assembly comprising: a retaining pin and a castor pin; a castor wheel that is rotatable about the castor pin; and a support bracket secured to the retaining pin and on which a support wheel and the castor pin are mounted, the support wheel being positioned to be unable to contact the castor wheel in use; wherein the castor wheel and the support wheel are rotatable about the retaining pin, and the castor wheel leads the support wheel when the castor wheel assembly is rolled along a surface on the castor wheel and the support wheel .
  • the castor wheel will be offset in the primary direction of travel relative to the retaining pin when the assembly is rolled along the surface.
  • the castor wheel and the support wheel will be in alignment, one behind the other, when the apparatus is rolled along a straight path.
  • Either or both the retaining pin and the castor pin may be inclined at an angle to the vertical to produce castor action to stabilise the movement of the or each wheel in use as the case may be.
  • the retaining pin will have an opposite inclination to that of the castor pin.
  • the castor pin of a castor wheel assembly embodied by the invention will be inclined in an upright plane extending in the primary direction of travel and usually, will be inclined at a negative castor angle relative to the vertical.
  • the invention provides a castor wheel assembly having a bracket for affixture to apparatus to be moved on said castor wheel assembly, a castor pin having a longitudinal axis supported on said bracket, a rotary yoke rotatably supported on the castor pin for rotation about said longitudinal axis and a castor wheel supported on the rotary yoke by a wheel axle, wherein said castor pin is hingedly supported on said bracket by a pivot axle for rotation thereabout thereby enabling the castor pin to be inclined to the vertical.
  • the castor pin is hingedly supported by the pivot axle to enable the castor pin to swing about a longitudinal axis of the pin from a first disposition defining a first inclined castor angle to a second disposition defining a second inclined castor angle.
  • said pivot axle is a horizontal pivot axle.
  • the wheel axle is a horizontal wheel axle.
  • the castor pin can swing from said first inclined angle to said second inclined angle in response to a change in direction of movement of the apparatus on the castor wheel assembly from a first direction to a second direction, wherein the first and second directions are opposite directions.
  • the bracket is provided with a pair of downwardly projecting arms hingedly supporting the horizontal pivot axle.
  • the castor pin is fixed to the bracket pivot axle for rotation about a horizontal axis .
  • the pivot axle is provided with a pair of divergent upwardly projecting abutments in the form of legs adapted in use to selectively and discretely abut the underside of the bracket thereby to limit respective clockwise and anti-clockwise rotation of the pivot axle and thus the angle of inclination from the vertical of the castor pin when the apparatus is moved in respective forward or reverse directions.
  • the rotary yoke is rotatably supported on the castor pin for rotation about the longitudinal axis of the pin and the castor wheel is rotatably supported on the rotary yoke by a horizontal wheel axle.
  • the pin is mounted for movement about a horizontal axis from a first position in which the castor pin extends at a first negative castor angle from the vertical in response to movement of the apparatus in a first direction to a second position in which the castor pin extends at a second negative castor angle from the vertical in response to movement of the apparatus in a second direction wherein the said second direction is the reverse of the said first direction.
  • the yoke rotates 180° about the longitudinal axis of the pin in response to said change in direction of movement from said first direction to said second direction.
  • the pin projects downwardly from the pivot axle at an inclined angle and in changing direction of movement of the apparatus from said forward direction to said reverse direction the yoke swivels 180° and the pivot axle rotates about its horizontal axis so that the castor pin is swung over centre from a first negative castor angle to a second negative castor angle.
  • the first negative castor angle is an angle in the range of 1° to 25° and the second negative castor angle is in the range of 1° to 25°.
  • the first negative angle is in the range of 5° to 15 and more preferably 10°.
  • the second negative castor angle is in the range 5° to 15°, and more preferably 7°.
  • a pair of divergent abutment means extend upwardly and outwardly from the horizontal pivot axle to selectively abut an underside of said bracket thereby to limit rotation of the axle in response to said changes in direction of movement of said apparatus.
  • Castor wheel assemblies of the invention may be utilised on any apparatus commonly fitted with castor wheels such as beds and other furniture, wheelchairs, support stands, scaffolding and trolleys, including shopping trolleys and hospital bed trolleys.
  • Figure 1 is a partial side view of apparatus provided with a castor wheel assembly embodied by the invention
  • Figure 2 is an important component of the castor wheel assembly shown in figure 1;
  • Figure 3 is a partial top view of apparatus provided with a further castor wheel assembly embodied by the invention illustrating important components of the invention
  • Figure 4 is an enlarged detail of area 4 of Figure 3 but with the upper wedge shaped element deleted to show how protrusions fit between tubular members;
  • Figure 5 is an enlarged detail of area 5 of Figure 3;
  • Figure 6 is a cross-sectional side view of components illustrated in Figure 5 taken along the line 6-6;
  • Figure 7 is a perspective view of the wedge shaped elements of embodiment illustrated in Figures 3 to 6.
  • Figure 8 is a partial side view of apparatus provided with a further castor wheel assembly embodied by the invention.
  • Figure 9 is a wedge of the castor wheel assembly shown in Figure 8 ;
  • Figures 10, 11 and 12 are plan views of the castor wheel assembly shown in Figure 3 during manoeuvring of the apparatus.
  • Figure 13 is a partial side view of apparatus provided with a further castor wheel assembly embodied by the invention illustrating important components during movement of the apparatus in one direction.
  • Figure 14 is a partial side view of the apparatus and the further castor wheel assembly shown in figure 3 during movement in an opposite direction;
  • Figure 15 is an end view of the castor wheel assembly shown in Figures 13 and 14, and Figure 16 is a perspective view of an alternative mount to that shown in Figure 14 for use with heavier loads .
  • the castor wheel assembly 10 shown in Figure 1 comprises a castor wheel 12 mounted to a rotary yoke 14 having a recess 16 in which is held a bearing 18 (shown in phantom outline) received on a castor pin 20.
  • the rotary yoke 14 is rotatably supported on the castor pin 20 for rotation about the longitudinal axis of the pin 20.
  • a castor wheel 12 is rotatably supported on the rotary yoke 14 by a horizontal wheel axle 11.
  • castor wheel 12 is readily rotatable about the castor pin 20.
  • Castor pin 20 is secured to a beam 22 of a rear end region of a shopping trolley 24 by a nut 26 and extends through an aperture 28 of a wedge-shaped element 30 causing the castor pin 20 to be inclined at a negative castor angle ⁇ from the vertical.
  • an additional wedge-shaped element 31 is provided above the beam 20 so that the nut 26 bears on a substantially flat surface extending in a plane generally perpendicular to longitudinal axis of the pin 20.
  • the castor pin 20 is inclined at an angle of 7° to the vertical although embodiments may be provided wherein ⁇ is in a range of from about 1° to about 25°.
  • bearing 18 is also tilted with respect to the horizontal plane. The inclination of the bearing 18 results in a tendency for castor yoke 14 of the castor wheel assembly to be maintained in its resting trailing position as shown in figure 1 providing the castor wheel with fore-and-aft directional stability and a self-centring action following angular deflection when the shopping trolley is pushed along.
  • Another castor wheel assembly 10 is arranged toward an opposite side of the shopping trolley 24 such that both castor wheel assemblies are in alignment as is commonly known.
  • the castor pin of that castor wheel assembly is also held at the same negative castor angle ⁇ by wedge- shaped elements 30, 31 as illustrated.
  • the wedge-shaped element 30 is more clearly shown in figure 2.
  • the lower element 30 is provided with recesses 32 and 34 that receive studs (not shown) located on beam 22.
  • the upper element 31 is substantially identical to the lower element 30. Provision of substantially identical elements may inhibit production costs and/or minimise errors in retro-fitting.
  • castor wheel assemblies are also provided on opposite sides of the trolley towards the front end region of the trolley.
  • a pair of castor wheel assemblies according to the invention can be provided to the front end region of the trolley so as to provide and/or to enhance fore-and-aft directional stability.
  • the apparatus can also be modified by, for example, angling the frame or support to which the castor wheel assembly is attached to cause the castor pin to be so inclined.
  • an angled castor pin may be used.
  • Important components of a further preferred embodiment of a castor wheel assembly is depicted in figures 3 to 9. This embodiment is also provided with a castor wheel arrangement having a castor pin inclined to the vertical but in this instance at least one of the wedge-shaped elements 40, 41 is provided with at least one protrusion projecting from a face thereof.
  • the lowermost frame member of conventional shopping trolleys typically comprises a pair of convergent elongate side beams 42, 44 and a pair of substantially parallel end braces 43 welded end to end to form a trapezium having a narrow end and a wide end, the narrow end forming the front end region of the trolley.
  • Two castor wheel assemblies 50, 51 are generally secured to each side beam 42, 44 one at or towards the front of the trolley and another pair 52, 53 at or towards the rear.
  • Each side beam 42, 44 is generally in the form of a pair of substantially parallel, spaced apart tubular members 45 extending in a substantially horizontal plane.
  • the castor pin typically extends through the gap 46 between the tubular members 45 and is bolted to the side beam by means of a nut thereby to extend in a generally upright or vertical direction.
  • the castor pin (not shown) is supported to extend in a direction inclined to the vertical at a negative castor angle.
  • a wedge-shaped element 40 having an opening 48 through which the castor pin may extend disposed below the side beam 42, 44 intermediate the lower end of the castor pin and the side beam 42 , 44 and an additional wedge-shaped element 41, having an opening 58 through which the castor pin may extend, disposed above the side beam 42, 44 intermediate the upper end of the castor pin and the beam 42, 44 as hereinbefore described with reference to figures 1 and 2.
  • each castor wheel assembly be provided with means to facilitate accurate alignment and/or quick affixture of the assembly to the trolley.
  • each pair of wedge-shaped elements 40, 41 is provided with one or more protrusions projecting from a convergent face of the element, adapted to project into and be ensconced within the gap 46 between the tubular members 45.
  • the protrusions may be of a shape and configuration and/or sufficient width to enable the element to be temporarily self-held in position during assembly prior to the nut being tightened on the castor pin.
  • the protrusion or protrusions may project into the gap 46 between adjacent tubular members 45 forming the respective side beams and be held in snap fit engagement therewith.
  • the protrusions have a height marginally less than or at most equal to the diameter of the tubular members to facilitate accurate spacing between the upper and lower wedge-shaped elements and to strengthen the joint formed thereby.
  • both wedge-shaped elements are provided with protrusions it is desirable that the sum of the heights of oppositely disposed protrusions is less than or at most equal to the diameter of the tubular members 45.
  • the further castor wheel assembly is rigidly attached to a shopping trolley to be moved on said castor wheel assembly, by means of a threaded castor pin and nut as hereinbefore described with reference to figures 1 and 2.
  • the lower wedge-shaped element 40 is provided with a pair of upwardly projecting protrusions 47.
  • the protrusions 47 are provided on the convergent face 48 adapted to engage the underside of the side beam 42 .
  • each castor wheel assembly be disposed to longitudinally extend substantially parallel to one another and substantially parallel to the longitudinal axis of the trolley.
  • the protrusions 47 are axially offset so that upon insertion into the gap 46 between the tubular members 45 the longitudinal axis of the wedge-shaped element 40 is oriented to extend substantially parallel to the longitudinal axis of the trolley.
  • wedge-shaped elements 40 adapted for one side of a trolley differ from those for the other side (viz figure 9) in that the protrusions 47 are axially offset at respective positive and negative angles to attend to differences in the direction of the longitudinal axis of respective convergent side beams 42 with respect to the longitudinal axis of the trolley.
  • the upper wedge-shaped element 41 is devoid of protrusions.
  • the height of the protrusions corresponds essentially to but generally marginally shorter than the diameter of the tubular members 45 of the side beams 42, 44 so that the tip of the protrusions 47 can engage the underside of the upper wedge-shaped element 41 upon the nut (not shown) being tightened on the castor pin (not shown) so as to strengthen the joint formed thereby.
  • the protrusion (s) may be of a shape, size and configuration to a snap-fit engagement with the tubular members, or at least temporary engagement in anticipation of emplacement of the pin through the opening of the wedge shaped element and affixture of the castor wheel assembly to the frame by tightening the nut on the castor pin.
  • FIG. 8 A further castor wheel assembly 36 embodied by the invention is depicted in figure 8.
  • This embodiment is also provided with a castor wheel arrangement as described above but in this instance the castor pin 20 is secured to a leading end region of a support arm 38 which in turn is secured to a retaining pin 60 about which both the castor wheel 12 and a support wheel 62 mounted on a trailing and of the support arm are rotatable.
  • the support wheel 62 is spaced from the castor wheel rearwardly of the retaining pin to enable rotation of the castor wheel about castor pin 20 without contact of the two wheels.
  • the retaining pin 60 is secured to beam 64 of a front end region of shopping trolley 24 by a nut 66 and is inclined at a positive castor angle ⁇ of 7° to the vertical as a result of the presence of a wedge-shaped element 30.
  • angle ⁇ will be the same as angle ⁇ and accordingly, may also be in a range of from about 1° to about 10° or more.
  • bearing 68 held in recess 70 of support arm 38 which enables the castor wheel 12 and the support wheel 62 to rotate about the retaining pin is also tilted due to the inclination of the retaining pin.
  • support arm 3.8 there is also a tendency for support arm 3.8 to be maintained in its resting trailing position as shown and for movement of the support wheel in use to be stabilised.
  • the wedge-shaped element 72 through which castor pin 20 extends is the same as wedge-shaped element 30 except that it is not provided with recesses 32 and 34 as indicated in figure 9. If desired, however, support arm 38 may be provided with studs to inhibit displacement of the wedge-shaped element in use in which case wedge-shaped element 72 can be replaced with a wedge-shaped element 30.
  • Support wheel 62 is able to pivot a restricted distance about pivot pin 76 in response to bumps on the ground surface along which the shopping trolley is pushed. This avoids castor wheel 12 from being lifted from the ground surface when the support wheel travels over such bumps. Generally, the pivotation of the support wheel about pivot pin 76 will be restricted such that the support wheel is only able to be lifted about 12mm from its resting position on the ground surface. A spring located within support arm 38 about pivot pin 76 exerts a downwardly directed force on the support wheel 62 to thereby return the support wheel to its resting position following pivotation about the pivot pin. An additional castor wheel assembly 36 is secured on an opposite side of the front region of the shopping trolley to the one as shown in figure 8.
  • the retaining pin 60 of the additional castor wheel assembly 36 is also inclined at a positive castor angle ⁇ of 7°.
  • the relative movement of the castor wheel 12 and the support wheel 62 when the shopping trolley is being manoeuvred in use is illustrated in figures 10, 11, 12.
  • support wheels 62 of castor wheel assemblies 36 are in alignment with and trail the respective castor wheels 12 when the shopping trolley is pushed in a forward direction.
  • castor wheel 12 and support wheel 62 rotate about retaining pin 60 causing support arm 38 to swing around and orientate in the direction of travel.
  • a further castor wheel assembly 1 embodied by the invention is depicted in figures 13, 14 and 15.
  • This embodiment is also provided with a castor wheel arrangement having a castor pin 8 inclined to the vertical but in this instance the castor pin 8 is secured to the apparatus by means of a hinge joint.
  • the illustrated castor wheel assembly 1 of figures 13, 14 and 15 has a bracket 2 rigidly attached to a shopping trolley 3 to be moved on said castor wheel assembly 1 by means of a threaded mounting shank 4 and a nut 5.
  • the bracket 2 is provided with a pair of downwardly projecting arms 6, hingedly supporting a horizontal pivot axle 7.
  • a castor pin 8 is rigidly fixed to said horizontal pivot axle 7 for rotation about a horizontal axis.
  • the pivot axle 7 is also provided with a pair of divergent upwardly projecting abutments in the form of legs 13 and 15 adapted in use to selectively and discretely abut the underside of the bracket 2 thereby to limit respective clockwise and anti-clockwise rotation of the pivot axle 7 direction and thus the angle of inclination from the vertical of the castor pin 8 when the trolley 3 is moved in the respective forward or reverse directions .
  • a rotary yoke 9 is rotatably supported on the castor pin 8 for rotation about the longitudinal axis of the pin 8.
  • a castor wheel 12 is rotatably supported on the rotary yoke 9 by a horizontal wheel axle 11.
  • the castor pin 8 is mounted for movement about a horizontal axis from a first position in which the castor pin extends at a first castor angle ⁇ from the vertical in response to movement of the trolley 3 in a first direction as, for example, illustrated in Figure 13, to a second position in which the castor pin 8 extends at a second castor angle ⁇ ' from the vertical in response to movement of the trolley 3 in a second direction as, for example, illustrated in Figure 14 wherein the said second direction is the reverse of the said first direction.
  • the yoke 9 generally rotates 180° about the longitudinal axis of the castor pin 8 in response to a change in direction of movement from said first direction to said second direction.
  • the castor pin 8 projects downwardly from the pivot axle 7 at an inclined angle.
  • the yoke has swivelled 180° and the pivot axle 7 has rotated about its horizontal axis so that the castor pin has swung over centre from a negative castor angle ⁇ of 10° to a negative castor angle ⁇ ' of 5°.
  • the illustrated horizontal pivot axle is hingedly supported by the bracket, however in other embodiments the pivot axle may be fixed to the bracket and the castor pin may be hingedly supported thereby. In these embodiments the castor pin is provided with abutments to limit rotation about the horizontal axis of the pivot axle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

Ensemble roulette pivotante (10), destiné à des chariots ou autres dispositifs appropriés, qui donne une chasse à la roulette (12) non seulement en décalant l'essieu (11) vers l'arrière de l'axe (20) de la roulette, mais aussi en inclinant ledit axe d'un angle α. A cet effet, on ajoute des coins (30) entre le coussinet (18) de la roulette et la barre (22) du châssis du chariot, ainsi éventuellement que des coins supérieurs (31) complémentaires qui constituent un appui plan pour l'écrou de fixation (26) de l'axe de la roulette. L'invention concerne diverses configurations des coins, ainsi que l'utilisation d'une roulette auxiliaire conçue pour pivoter à l'extérieur de la roulette principale dans les virages, ce qui permet au véhicule de mieux suivre sa trajectoire et donc améliore sa stabilité.
PCT/AU1998/000800 1997-09-23 1998-09-23 Ensemble roulette pivotante WO1999015346A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU92461/98A AU732100B2 (en) 1997-09-23 1998-09-23 A castor wheel assembly

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AUPO9371A AUPO937197A0 (en) 1997-09-23 1997-09-23 A caster wheel assembly
AUPO9371 1997-09-23
AUPP0240 1997-11-05
AUPP0240A AUPP024097A0 (en) 1997-11-05 1997-11-05 A caster wheel assembly
AUPP1907A AUPP190798A0 (en) 1998-02-19 1998-02-19 A caster wheel assembly
AUPP1907 1998-02-19

Publications (1)

Publication Number Publication Date
WO1999015346A1 true WO1999015346A1 (fr) 1999-04-01

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ID=27158042

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Application Number Title Priority Date Filing Date
PCT/AU1998/000800 WO1999015346A1 (fr) 1997-09-23 1998-09-23 Ensemble roulette pivotante

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WO (1) WO1999015346A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353978A (en) * 1999-09-13 2001-03-14 Inv S Dev Engineering Answers Castor arrangement for shopping trolleys
WO2002022428A2 (fr) * 2000-09-16 2002-03-21 Michael Prinz Suspension amelioree de roues directrices pour des vehicules, notamment pour des trottinettes dirigeables par deplacement du poids
EP1097733A3 (fr) * 1999-11-04 2003-01-15 Christian Zwinger Planche à roulettes
WO2003047941A1 (fr) * 2001-11-29 2003-06-12 Alaister Copland Chariots manoeuvrables
WO2007016750A1 (fr) 2005-08-11 2007-02-15 Global Stability & Manoeuvrability Technology Corporation Pty Ltd Ensemble de roue orientable ameliore
WO2008001131A1 (fr) 2006-06-30 2008-01-03 James Pollard Ensemble de roulettes
WO2008113116A1 (fr) * 2007-03-16 2008-09-25 Inautec Pty Limited Chariot avec roue de guidage
US20090295111A1 (en) * 2008-04-30 2009-12-03 O'rourke Thomas J Bi-directional propulsion caster
WO2010003185A1 (fr) * 2008-07-08 2010-01-14 Rias Technologies (International) Limited Mécanisme de roulette à battement
GB2487397A (en) * 2011-01-20 2012-07-25 Dyson Technology Ltd Inclined rear castor on a cylinder vacuum cleaner
US9009911B2 (en) 2011-01-20 2015-04-21 Dyson Technology Limited Cylinder vacuum cleaner
WO2018174781A1 (fr) * 2017-03-21 2018-09-27 Silver & Stal Enterprises Ab Chariot de transport
US11685188B2 (en) 2016-11-10 2023-06-27 Exokinetics, Inc. Dual-state caster and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884493A (en) * 1973-11-23 1975-05-20 Whirlpool Co Caster wheels for a portable appliance
US4282628A (en) * 1977-10-25 1981-08-11 Herder N.V. Tilted axle caster
FR2561602A3 (fr) * 1984-03-23 1985-09-27 Tente Rollen Gmbh & Co Chariot a main, notamment pour magasins a libre service, muni de roulettes orientables
DE3418744A1 (de) * 1984-05-19 1985-11-21 Wolfgang 2820 Bremen Schlott Schwerlast-rollenwagen
AU6285494A (en) * 1993-03-22 1994-10-11 Bernard Gallee Device providing monoeuvrability and sideslip-free directional steering stability for trolleys
GB2278773A (en) * 1993-06-11 1994-12-14 Clares Equip Ltd Steerable mobile load carrier: swivel castor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884493A (en) * 1973-11-23 1975-05-20 Whirlpool Co Caster wheels for a portable appliance
US4282628A (en) * 1977-10-25 1981-08-11 Herder N.V. Tilted axle caster
FR2561602A3 (fr) * 1984-03-23 1985-09-27 Tente Rollen Gmbh & Co Chariot a main, notamment pour magasins a libre service, muni de roulettes orientables
DE3418744A1 (de) * 1984-05-19 1985-11-21 Wolfgang 2820 Bremen Schlott Schwerlast-rollenwagen
AU6285494A (en) * 1993-03-22 1994-10-11 Bernard Gallee Device providing monoeuvrability and sideslip-free directional steering stability for trolleys
GB2278773A (en) * 1993-06-11 1994-12-14 Clares Equip Ltd Steerable mobile load carrier: swivel castor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT, Accession No. 95-008679/02, Class Q11; & GB 2278773 A (CLARES EQUIP LTD) 14 December 1994. *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353978A (en) * 1999-09-13 2001-03-14 Inv S Dev Engineering Answers Castor arrangement for shopping trolleys
EP1097733A3 (fr) * 1999-11-04 2003-01-15 Christian Zwinger Planche à roulettes
WO2002022428A2 (fr) * 2000-09-16 2002-03-21 Michael Prinz Suspension amelioree de roues directrices pour des vehicules, notamment pour des trottinettes dirigeables par deplacement du poids
WO2002022428A3 (fr) * 2000-09-16 2002-10-24 Michael Prinz Suspension amelioree de roues directrices pour des vehicules, notamment pour des trottinettes dirigeables par deplacement du poids
WO2003047941A1 (fr) * 2001-11-29 2003-06-12 Alaister Copland Chariots manoeuvrables
WO2007016750A1 (fr) 2005-08-11 2007-02-15 Global Stability & Manoeuvrability Technology Corporation Pty Ltd Ensemble de roue orientable ameliore
EP1922215A1 (fr) * 2005-08-11 2008-05-21 Global Stability & Manoeuvrability Technology Corporation Pty Ltd Ensemble de roue orientable ameliore
EP1922215A4 (fr) * 2005-08-11 2009-11-11 Global Stability & Manoeuvrabi Ensemble de roue orientable ameliore
WO2008001131A1 (fr) 2006-06-30 2008-01-03 James Pollard Ensemble de roulettes
GB2439731B (en) * 2006-06-30 2009-03-04 James Pollard Castor assembly
US8146203B2 (en) 2006-06-30 2012-04-03 James Pollard Castor assembly
WO2008113116A1 (fr) * 2007-03-16 2008-09-25 Inautec Pty Limited Chariot avec roue de guidage
US20090295111A1 (en) * 2008-04-30 2009-12-03 O'rourke Thomas J Bi-directional propulsion caster
US8297630B2 (en) * 2008-04-30 2012-10-30 James Patrick O'Rourke Bi-directional propulsion caster
CN102089160A (zh) * 2008-04-30 2011-06-08 托马斯·乔瑟夫·欧洛克 双向推进脚轮
CN102089160B (zh) * 2008-04-30 2015-02-04 托马斯·乔瑟夫·欧洛克 双向推进脚轮
US20120217721A1 (en) * 2008-04-30 2012-08-30 O'rourke Thomas J Bi-directional propulsion caster
WO2010003185A1 (fr) * 2008-07-08 2010-01-14 Rias Technologies (International) Limited Mécanisme de roulette à battement
GB2487397B (en) * 2011-01-20 2014-12-03 Dyson Technology Ltd A cylinder vacuum cleaner
GB2487397A (en) * 2011-01-20 2012-07-25 Dyson Technology Ltd Inclined rear castor on a cylinder vacuum cleaner
US9009911B2 (en) 2011-01-20 2015-04-21 Dyson Technology Limited Cylinder vacuum cleaner
US9282865B2 (en) 2011-01-20 2016-03-15 Dyson Technology Limited Cylinder vacuum cleaner
US11685188B2 (en) 2016-11-10 2023-06-27 Exokinetics, Inc. Dual-state caster and method
WO2018174781A1 (fr) * 2017-03-21 2018-09-27 Silver & Stal Enterprises Ab Chariot de transport

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