EP0172808A4 - Roue amelioree pour vehicules tout terrain et procede permettant de deplacer ces vehicules sur des surfaces meubles ou irregulieres. - Google Patents

Roue amelioree pour vehicules tout terrain et procede permettant de deplacer ces vehicules sur des surfaces meubles ou irregulieres.

Info

Publication number
EP0172808A4
EP0172808A4 EP19840901151 EP84901151A EP0172808A4 EP 0172808 A4 EP0172808 A4 EP 0172808A4 EP 19840901151 EP19840901151 EP 19840901151 EP 84901151 A EP84901151 A EP 84901151A EP 0172808 A4 EP0172808 A4 EP 0172808A4
Authority
EP
European Patent Office
Prior art keywords
tire
rim
engaging
torus
wheel
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.)
Withdrawn
Application number
EP19840901151
Other languages
German (de)
English (en)
Other versions
EP0172808A1 (fr
Inventor
William E Tuggle
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0172808A1 publication Critical patent/EP0172808A1/fr
Publication of EP0172808A4 publication Critical patent/EP0172808A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/02—Seating or securing beads on rims
    • B60C15/0233—Securing tyres without beads; Securing closed torus or tubular tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C3/00—Tyres characterised by the transverse section
    • B60C3/02—Closed, e.g. toroidal, tyres

Definitions

  • the torus-like tire has an inner diameter surface engaging the rim and conventional inflation stem or inflation needle valve for inflating the tire to a low pressure, preferably less than 10 psi.
  • the outer diameter surface of the tire directly contacts the underlying support surface so that the tire, when loaded, will deform or flatten substantially where it contacts soft or irregular support surfaces, thereby facilitating movement of an associated vehicle over such surfaces.
  • the axial length of the rim preferably is greater than or equal to twice the undeformed radius of the circle of revolution of the torus but no greater than T ⁇ times this radius.
  • the diameter of the cylindrical flange portions preferably is greater than the diameter of the inner diameter surface of the .tire but not more than three times larger.
  • a vehicle is provided with at least one wheel comprising a tire supporting rim with a substantially cylindrical outer surface for engaging a tire and a central opening for engaging an axle.
  • a low pressure tire is mounted on this rim, the tire comprising a thin-walled torus of elastomeric material, the tire having an inner diameter surface for engaging the rim, means for inflating the torus to a low pressure and an outer diameter surface for directly contacting the underlying support surface.
  • Such a tire is inflated to allow pressure sufficient
  • Fig. 1 shows a sectional elevation view of a wheel according to the present invention, indicating the substantially flattened configuration assumed by the torus-like tire when a load is applied to the assembly.
  • Fig. 2 shows a side elevation view of a wheel according to the invention, as seen from the left in Fig. 1.
  • OMPI 38 are joined to conical portions 34, 36.
  • Each cylindrical flange has a diameter D which is larger than but preferably no more than three times the length of diameter d, in order to prevent the low pressure tire from working its way from rim 12 during use.
  • a cylindrical spacer 40 is received in a pair of oppositely facing recesses 42, 44 provided at the inner ends of cylindrical portions 18, 20.
  • the halves of rim 12 are ' joined by suitable fasteners such as bolt and nut pairs 46 which extend through cylindrical portions 18, 20, as illustrated.
  • the inner diameter surface 52 of torus 50 engages the outer surfaces of the rim 12 as previously indicated and has approximately the same diameter.
  • diameter d was approximately 8.75 inches and diameter D was approximately 13.75 inches.
  • the axial length of the assembled rim 12 is greater than or equal to twice radius r but no greater than IT times radius r, in order to provide adequate contact
  • Tire 48 is provided with a means 54 for inflation to a low pressure, such as a conventional valve stem member which extends through a hole in conical portion 34, or an inflation needle valve of the type used in basketballs, for example.
  • a low pressure such as a conventional valve stem member which extends through a hole in conical portion 34, or an inflation needle valve of the type used in basketballs, for example.
  • torus 50 preferably is inflated to no more than 10 psi in order to ensure that the tire will flatten or deform in the manner illustrated and thereby provide sufficient contact surface to permit an associated vehicle to move easily over soft or irregular support surfaces. Pressure as low as 3 psi has proven suitable for many applications. Such support surfaces are contacted directly by the outer diameter surface 56 of torus 50.
  • Tire 48 can be made by conventional extruding and molding techniques used in the rubber industry to make inner tubes, bladders and the like.
  • a central, radially inwardly directed flange 58 or a similarly oriented plurality of tabs may be captured between the inner ends of cylindrical portions 18, 20 to provide additional assurance that the tire will not move from its rim.
  • reinforcing strands or cords 60 may be provided in the wall of torus 50 in the area where the tire engages its rim, in order to provide additional strength at that location; however, a significant advantage of the present invention is that the use of such reinforcements is not necessary at any place in the tire and is particularly undesirable in the wall adjacent contact surface 56 since such reinforce ⁇ ments would limit the ability of the tire to flatten or deform in the preferred manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
EP19840901151 1984-02-17 1984-02-17 Roue amelioree pour vehicules tout terrain et procede permettant de deplacer ces vehicules sur des surfaces meubles ou irregulieres. Withdrawn EP0172808A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1984/000222 WO1985003674A1 (fr) 1984-02-17 1984-02-17 Roue amelioree pour vehicules tout terrain et procede permettant de deplacer ces vehicules sur des surfaces meubles ou irregulieres

Publications (2)

Publication Number Publication Date
EP0172808A1 EP0172808A1 (fr) 1986-03-05
EP0172808A4 true EP0172808A4 (fr) 1986-07-30

Family

ID=22182047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840901151 Withdrawn EP0172808A4 (fr) 1984-02-17 1984-02-17 Roue amelioree pour vehicules tout terrain et procede permettant de deplacer ces vehicules sur des surfaces meubles ou irregulieres.

Country Status (7)

Country Link
EP (1) EP0172808A4 (fr)
JP (1) JPS61501384A (fr)
BR (1) BR8407290A (fr)
DE (1) DE3490658T1 (fr)
GB (1) GB2165499B (fr)
SE (1) SE8504837L (fr)
WO (1) WO1985003674A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242882A (en) * 1990-04-12 1991-10-16 Stc Plc Tyre for linear cable engine.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0133150A2 (fr) * 1983-07-25 1985-02-13 The Goodyear Tire & Rubber Company Bandage pneumatique à tore fermé
US4538657A (en) * 1983-02-16 1985-09-03 Tuggle William E Wheel for land vehicles and method for moving such vehicles over soft or irregular surfaces

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US398391A (en) * 1889-02-26 Prank hammond
US1110849A (en) * 1914-09-15 Herbert A Wheeling Spring-wheel.
US1090727A (en) * 1913-07-19 1914-03-17 John A Leach Jr Pneumatic tire and fastener therefor.
GB359110A (en) * 1930-08-21 1931-10-22 Dunlop Rubber Co An improved design and construction of pneumatic tyre
US1965058A (en) * 1932-02-24 1934-07-03 Seabre Alberto Lebre Pneumatic wheel for vehicles
US2367825A (en) * 1941-10-21 1945-01-23 Firestone Tire & Rubber Co Wheel construction
US2435186A (en) * 1942-10-19 1948-01-27 William H Trexler Pneumatic tire for model aeroplanes and the like
CH256390A (de) * 1946-09-24 1948-08-15 Aalrust Rasmus Rad.
US4267992A (en) * 1978-04-16 1981-05-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Tire/wheel concept
JPS5721765Y2 (fr) * 1978-09-30 1982-05-12
US4253511A (en) * 1979-08-06 1981-03-03 The Goodyear Tire & Rubber Company Tire with supportable sidewalls

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4538657A (en) * 1983-02-16 1985-09-03 Tuggle William E Wheel for land vehicles and method for moving such vehicles over soft or irregular surfaces
EP0133150A2 (fr) * 1983-07-25 1985-02-13 The Goodyear Tire & Rubber Company Bandage pneumatique à tore fermé

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8503674A1 *

Also Published As

Publication number Publication date
EP0172808A1 (fr) 1986-03-05
BR8407290A (pt) 1986-02-18
JPS61501384A (ja) 1986-07-10
SE8504837D0 (sv) 1985-10-16
DE3490658T1 (de) 1986-04-03
GB2165499A (en) 1986-04-16
WO1985003674A1 (fr) 1985-08-29
SE8504837L (sv) 1985-10-16
GB2165499B (en) 1988-08-03
GB8524575D0 (en) 1985-11-06

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Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): FR

17P Request for examination filed

Effective date: 19860206

A4 Supplementary search report drawn up and despatched

Effective date: 19860730

17Q First examination report despatched

Effective date: 19870113

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19880723