EP0623075A1 - Perfectionnements apportes aux roues - Google Patents

Perfectionnements apportes aux roues

Info

Publication number
EP0623075A1
EP0623075A1 EP92924766A EP92924766A EP0623075A1 EP 0623075 A1 EP0623075 A1 EP 0623075A1 EP 92924766 A EP92924766 A EP 92924766A EP 92924766 A EP92924766 A EP 92924766A EP 0623075 A1 EP0623075 A1 EP 0623075A1
Authority
EP
European Patent Office
Prior art keywords
wheel
sleeve
projections
teeth
wheel according
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.)
Ceased
Application number
EP92924766A
Other languages
German (de)
English (en)
Inventor
Hugh James O'neill
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.)
NEILL HUGH JAMES O
Original Assignee
NEILL HUGH JAMES O
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 NEILL HUGH JAMES O filed Critical NEILL HUGH JAMES O
Publication of EP0623075A1 publication Critical patent/EP0623075A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B15/00—Wheels or wheel attachments designed for increasing traction
    • B60B15/26—Auxiliary wheels or rings with traction-increasing surface attachable to the main wheel body

Definitions

  • the present invention has reference to such wheels employed on vehicles for the purpose of reducing the loading per unit area, thereby to minimise the damage to the supporting surface through frictional and mechanical contact therewith, especially when turning.
  • the wheel of the present invention has particular but not exclusive application to a vehicle intended to be driven on a sensitive and easily damaged surface, for example, the grass of a golf course.
  • a sensitive and easily damaged surface for example, the grass of a golf course.
  • One of the problems attendant upon the use of conventional wheels with pneumatic tyres on golf carts is that of changing direction, especially when moving on wet or heavy grass. The act of turning the wheel occasions damage to the grass and causes ruts and general surface disruption.
  • An object of the present invention is to provide an improved wheel of simplified form but capable of spreading the wheel loading to avoid damaging a supporting surface.
  • a wheel including a plurality of spaced apart projections extending laterially and circumferentially of the wheel in such manner as, in use, sequentially to provide areas for contact, with a supporting surface, wherein the projections are provided on or integrally with a sleeve secured directly to the wheel to afford differential movement between each side of the wheel.
  • the sleeve may conveniently be in the form of a track securable to the periphery of the wheel which may usually include a hub carrying a tyre, the sleeve being securable to the tyre.
  • the tyre may be solid or fluid filled.
  • fluid filled includes gas filled, for example, air or liquid filled or foam filled.
  • the sleeve may be in the form of a cage mountable on the wheel.
  • the sleeve may be annular or formable into an annular shape to circumscribe the wheel.
  • the means of securement of the sleeve to the wheel may be by the use of an adhesive.
  • such means may be frictional by way of inflation of the tyre where the tyre employed is fluid filled.
  • the means for securement may be provided mechanically by formations on the internal surface of the sleeve interengaging the surface of the wheel.
  • the sleeve is replaceable.
  • the projections may be equispaced around the periphery of the wheel and in the form of teeth.
  • the spaces between the teeth may be of uniform rectilinear shape in the manner of slots and the teeth may give the appearance of castellations.
  • the spaces between the teeth may be v-shaped or of other shape varying in cross section from the roots to the tips of adjacent teeth.
  • the projections are preferably of elastomeric material, such, for example, as natural rubber or a synthetic material giving sufficient flexibility to permit the differential movement between each side of the wheel.
  • the sleeve may also be of the same material, the projections conveniently being integral therewith.
  • the elastomeric material is a laminated structure bonded either by heat or glue.
  • a neoprene, plastic, neoprene laminate for example, a neoprene, plastic, neoprene laminate.
  • Figure 1 is a side view of the wheel
  • Figure 2 is an end view of the wheel
  • Figure 3 is a perspective view of the wheel
  • Figure 4 is a diagrammatic representation of a golf cart.
  • a wheel 1 includes a hub 2 mounted on an axle 4 rotatably held in bearings or bushes (not shown) provided in a front steering fork 6 of a golf cart 8. Similar wheels 1 are mounted at the rear of the cart on either side thereof.
  • Each wheel 1 also includes a pneumatically inflatable tyre 10 having a tread (not shown) on its circumference.
  • a sleeve 12 of elastomeric material in the form of an essentially annular track comprises a central portion 14 having on each peripheral edge a plurality of equispaced projections in the form of teeth 16, the teeth being integral with the sleeve and spaced one from the other by a rectilinear slot 18 to give the appearance of castellations.
  • the central portion 14 is bonded to the tread of the tyre 10 by a suitable adhesive, whilst the projections are movable independently in relation thereto and thus in relation to the tyre, thereby to afford differential movement as between the sides of the tyre.
  • the loading per unit area thereof is spread by virtue of the provision of the projections in the form of teeth 16, and thus the tread of the tyre is effectively enlarged by the presence of the sleeve 12. Accordingly, when moving along a straight path the wheels of the invention afford a gentler contact with a potentially vulnerable supporting surface, which would, in the case of a golf cart, be grass.
  • the front fork 6 of the cart 8 is turned through the desired angle. In so doing, the wheel also moves through the same angle, but the elastomeric nature of the sleeve 12 and the flexibility provided by the teeth 16 allow limited and differential movement as between the two sides of the wheel.
  • the teeth on the relatively inner side will tend to move together to compensate whilst the teeth on the relatively outer side of the wheel will tend to move apart, the movement of the outer and inner series of teeth being independent of each other.
  • the teeth sequentially move into and out of contact with the supporting surface and by virtue of the elastomeric properties of the material from which they are made recover their normal relative positions when out of contact with the supporting surface.
  • the wheel of the invention also accommodates variations in the contours of the supporting surface and in so doing, allows the super-mounted vehicle to cope with all manner of terrain whilst maintaining good adhesion with little if any damaging effect upon the surface.
  • wheel of the present invention can be used other than for golf carts which represent only one application.
  • the advantage of the present invention resides in its simplicity of construction and manufacture in comparison with earlier proposals whilst retaining efficacy in reducing the loading per unit area and therefore obviating or alleviating the damaging effect of ordinary wheel treads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Retarders (AREA)

Abstract

Roue (1) destinée à être utilisée sur une surface potentiellement vulnérable telle que le gazon d'un terrain de golf, comprenant une gaine (12) de matériau élastomère comportant une pluralité de prolongements en forme de dents (16) situées de part et d'autre des bords périphériques. Les dents situées sur l'un des bords peuvent se déplacer indépendamment des dents situées sur le bord opposé, de façon à permettre un déplacement différentiel entre celles-ci lors d'un changement en direction.
EP92924766A 1992-01-31 1992-11-30 Perfectionnements apportes aux roues Ceased EP0623075A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB929202087A GB9202087D0 (en) 1992-01-31 1992-01-31 Improvements in or relating to wheels
GB9202087 1992-11-11
PCT/GB1992/002213 WO1993014944A1 (fr) 1992-01-31 1992-11-30 Perfectionnements apportes aux roues

Publications (1)

Publication Number Publication Date
EP0623075A1 true EP0623075A1 (fr) 1994-11-09

Family

ID=10709611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92924766A Ceased EP0623075A1 (fr) 1992-01-31 1992-11-30 Perfectionnements apportes aux roues

Country Status (5)

Country Link
EP (1) EP0623075A1 (fr)
JP (1) JPH07503208A (fr)
KR (1) KR950700176A (fr)
GB (2) GB9202087D0 (fr)
WO (1) WO1993014944A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9514550D0 (en) * 1995-07-10 1995-09-13 Elite Golf Products Limited Wheels and tyres
DE19635623C2 (de) * 1996-09-03 1998-08-06 Vorwerk Rotatec Gmbh & Co Kg Fahrzeugrad

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738407A (en) * 1971-04-30 1973-06-12 D Deckert Roller for mounting on the tires of a tractor
US3935891A (en) * 1974-12-18 1976-02-03 Marvin H. McCloud, Sr. Tire traction device
GB1481900A (en) * 1976-02-14 1977-08-03 Equipment Ltd Cage wheels for vehicles
EP0285903A1 (fr) * 1987-04-01 1988-10-12 Hermann Rastorfer Dispositif anti-dérapant pour une roue de véhicule

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9314944A1 *

Also Published As

Publication number Publication date
GB9415284D0 (en) 1994-09-21
WO1993014944A1 (fr) 1993-08-05
GB9202087D0 (en) 1992-03-18
JPH07503208A (ja) 1995-04-06
GB2277720A (en) 1994-11-09
GB2277720B (en) 1995-05-03
KR950700176A (ko) 1995-01-16

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19940831

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Effective date: 19950628

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18R Application refused

Effective date: 19960224