WO1995000347A1 - Equilibrage de pneumatique - Google Patents

Equilibrage de pneumatique Download PDF

Info

Publication number
WO1995000347A1
WO1995000347A1 PCT/CA1994/000344 CA9400344W WO9500347A1 WO 1995000347 A1 WO1995000347 A1 WO 1995000347A1 CA 9400344 W CA9400344 W CA 9400344W WO 9500347 A1 WO9500347 A1 WO 9500347A1
Authority
WO
WIPO (PCT)
Prior art keywords
range
mixture
weight
beads
mesh size
Prior art date
Application number
PCT/CA1994/000344
Other languages
English (en)
Inventor
Michael Heffernan
Russell J. Freeman
Original Assignee
M & R Tire Products Inc.
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 M & R Tire Products Inc. filed Critical M & R Tire Products Inc.
Priority to JP7502280A priority Critical patent/JPH09501368A/ja
Priority to AU70661/94A priority patent/AU682376B2/en
Priority to EP94919534A priority patent/EP0705174A1/fr
Publication of WO1995000347A1 publication Critical patent/WO1995000347A1/fr
Priority to US08/655,964 priority patent/US5728243A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/30—Compensating imbalance
    • G01M1/32—Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights
    • G01M1/326—Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights the body being a vehicle wheel
    • 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
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • 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
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • B60C19/003—Balancing means attached to the tyre
    • 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
    • B60C5/00—Inflatable pneumatic tyres or inner tubes
    • B60C5/004—Inflatable pneumatic tyres or inner tubes filled at least partially with liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
    • F16F15/36—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved
    • F16F15/366—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved using fluid or powder means, i.e. non-discrete material

Definitions

  • This invention relates to an improvement in a method of balancing tires using a free flowing material within a tire casing and in the composition of said material.
  • Continuous self balancing systems overcome many of the disadvantages of the above fixed weight systems.
  • Continuous self balancing systems use the principle that free flowing materials contained in a vessel in rotation will seek a distribution in balance about the centre of rotation and will tend to offset, by mass damping, any imbalance inherent in the vessel.
  • the effectiveness of a dynamic balancing system is dependent in part on the ease with which balancing material can move within the vessel to positions which offset points of imbalance.
  • annular ring is placed circumferentially about a rim and partially filled with heavy materials that will flow under the influence of centrifugal force.
  • One such balancer uses mobile weights such as ball bearings which are free to roll to any point on the ring. The effectiveness of this method is limited by the roundness of the ball bearings, the concentricity of the ring to the geometric axis and the inherent rolling resistance of the balls in the ring.
  • the present invention uses the known principle of balancing through mass damping and the known method of using a solid materials within a pneumatic tire to obtain a dynamic balance while the wheel is in rotation.
  • the improvement of this invention lies primarily in the composition of the mixture of the balancing material.
  • the mixture comprises small, dense beads and larger, less dense beads. Beads of a substantially rounded shaped reduce friction and improve the mobility of the material during balancing.
  • the small, dense beads may be formed of atomized metallic particles which form during atomization as tiny balls.
  • Corrosion resistant metal such as bronze, brass, zinc, tin, copper, stainless steel, nickel or silver or alloys of same may be used. Selection may be made after consideration of factors such as cost, availability and suitability for forming into small rounded shapes.
  • the metallic component is selected from bronze, brass or zinc and atomized to form tiny balls, hereafter called "micro-spheres".
  • the micro-spheres have round surfaces which permit them to roll over each other with less friction than sharp edged particles.
  • the metallic micro-spheres have the greatest density (about
  • the small size of the micro- spheres enables them to filter through the other materials during rotation.
  • the interior circumference of a tire is usually riddled with small pockets and ridges produced during the tire moulding process. These surface defects cause erratic movement of the balancing media and reduce its effectiveness.
  • the micro-spheres are forced against the tire casing to fill in imperfections or voids on the tire wall to form a smooth lining which allows the remaining balancing media to move about the tire casing with less impediment.
  • the larger, less dense beads are also rounded and may be formed from glass, ceramics, alumina, corderite, porcelain or titanates. These beads function as the primary balancing material and form the largest portion by weight of the mixture. Glass spheres or beads of density 2- 3 gr/cm3 are preferred. The glass beads are larger but less dense than the metallic micro-spheres. Thus the glass beads tend to ride over the metallic micro-spheres to move easily to points of imbalance to dampen vibrational energy. The glass beads are more durable than thermoplastic particles of Fogal and less prone to degradation.
  • the mixture may also include a partitioning agent, such as vermiculite, mica or other monoclinic non-reactive crystalline minerals, to separate and lubricate the mixture to enable all components of the mixture to maintain free-flowing characteristics.
  • a partitioning agent such as vermiculite, mica or other monoclinic non-reactive crystalline minerals, to separate and lubricate the mixture to enable all components of the mixture to maintain free-flowing characteristics. Vermiculite is preferred.
  • a suitable desiccant such as silica gel, A12O3, CaC12 or CaSO4 may be added to the mixture to prevent agglomeration in the presence of moisture.
  • Silica Gel is preferred as a desiccant to maintain a dry atmosphere in the tire casing.
  • the small particles used in this type of balancing system tend to be hydroscopic and may agglomerate in the presence of moisture. Agglomerated particles will cause a dramatic reduction in balancing efficiency.
  • the silica gel tends to ameliorate this condition.
  • a preferred mixture of this invention is as follows.
  • Figure 1 is an illustration of a tire and rim assembly cut away to show the interior of the tire casing having the balancing material of this invention
  • Figure 2 is an illustration of a cross section of a tire and rim assembly showing the balancing material of this invention
  • Figure 3 is a side sectional view of a tire showing the distribution of the mixture of this invention.
  • a tire (1) is shown mounted on a rim (2) which, in turn, is mounted on an axle (3) of a vehicle (4).
  • the interior of the tire casing (5) is ordinarily filled with air.
  • the balancing material (6) of this invention lies about the periphery of the tire casing (5) while the wheel is in rotation by reason of the centrifugal force exerted on the material (6).
  • the interior of the tire casing (5) has many voids and surface irregularities (7) (which are accentuated in the illustration).
  • the atomized metal micro-spheres (8) are shown to lie in and about the surface irregularities (7) of the tire casing (5).
  • the micro-spheres (8) fill the voids and surface irregularities (7) and form a smooth, slippery surface for movement of the remainder of the balancing material.
  • the excess of the micro-spheres acts as balancing material.
  • Glass beads (9) roll over the micro-spheres (8) and act as the primary balancing material.
  • Vermiculite (not shown) and silica gel (not shown) are interspersed in the material to act as a lubricant and a desiccant, respectively.
  • the preferred proportions of the balancing mixture for use in track tires is as follows:
  • the preferred mixture is:
  • micro-spheres 24% glass beads 65% vermiculite 9% silica gel 2%
  • the balancing mixture may be poured into a new tire casing as it is assembled onto a rim.
  • the sealing bead about the rim may be broken and the mixture poured into the tire casing.
  • the mixture may be poured into the valve stem or mixed with the air which pressurizes the tire.
  • the material (6) distributes within the tire casing (5) so that a thicker portion of the material (6) lies opposite the point of imbalance (10), while some of the balancing material (6) is distributed about the entire inner surface of the tire casing (5).
  • the distribution of the balancing material (6) acts as mass damping to overcome the eccentric force which would otherwise be introduced by the point of imbalance (10), so that the tire (1) turns smoothly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Tires In General (AREA)
  • Testing Of Balance (AREA)

Abstract

On décrit un procédé et une composition d'un matériau destinés à équilibrer l'ensemble pneumatique/jante de véhicules. Ce matériau comprend des éléments d'équilibrage arrondis de différentes tailles destinés à garnir l'intérieur d'une enveloppe de pneumatique et à se déplacer sur la garniture constituée par ce matériau afin de compenser les points de déséquilibre.
PCT/CA1994/000344 1993-06-17 1994-06-17 Equilibrage de pneumatique WO1995000347A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7502280A JPH09501368A (ja) 1993-06-17 1994-06-17 タイヤ・バランシング
AU70661/94A AU682376B2 (en) 1993-06-17 1994-06-17 Tire balancing
EP94919534A EP0705174A1 (fr) 1993-06-17 1994-06-17 Equilibrage de pneumatique
US08/655,964 US5728243A (en) 1994-05-31 1996-05-31 Tire balancing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002098643A CA2098643C (fr) 1993-06-17 1993-06-17 Equilibrage de pneus
CA2,098,643 1993-06-17

Publications (1)

Publication Number Publication Date
WO1995000347A1 true WO1995000347A1 (fr) 1995-01-05

Family

ID=4151807

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1994/000344 WO1995000347A1 (fr) 1993-06-17 1994-06-17 Equilibrage de pneumatique

Country Status (5)

Country Link
EP (1) EP0705174A1 (fr)
JP (1) JPH09501368A (fr)
AU (1) AU682376B2 (fr)
CA (1) CA2098643C (fr)
WO (1) WO1995000347A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6129797A (en) * 1994-05-31 2000-10-10 M&R Tire Products Inc. Tire balancing
WO2014120434A1 (fr) 2013-01-29 2014-08-07 Halliburton Energy Services, Inc. Fluides de puits de forage comprenant des particules minérales et procédés s'r rapportant

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4561292B2 (ja) * 2004-10-08 2010-10-13 横浜ゴム株式会社 空気入りタイヤ
CA2742257A1 (fr) * 2008-10-29 2010-05-06 Robert D. Fogal, Sr. Composition destinee a la correction de variations de force et vibrations d'un ensemble pneumatique-roue
WO2023150873A1 (fr) * 2022-02-08 2023-08-17 Counteract Balancing Beads Inc. Système et procédé d'équilibrage de pneu

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230999A (en) * 1963-11-22 1966-01-25 William L Hicks Ballasted vehicle tires
US3747660A (en) * 1971-10-04 1973-07-24 D Tibbals Ballasted vehicle tire and self-sealing thixotropic ballast composition therefor
US4137206A (en) * 1977-02-14 1979-01-30 New World Products, Inc. Tire protection composition
GB1570398A (en) * 1977-02-08 1980-07-02 Dunlop Ltd Polybutene compositions
GB2047736A (en) * 1979-04-26 1980-12-03 Gen Tire & Rubber Co Lubricant-containing pneumatic tires
GB2074955A (en) * 1980-04-14 1981-11-11 Uniroyal Englebert Gmbh Run-flat tyre and wheel assemblies
US5073217A (en) * 1990-10-17 1991-12-17 Fogal Robert D Method of balancing a vehicle wheel assembly
US5083596A (en) * 1989-11-17 1992-01-28 Hiroshi Kato Pressurized with a fluid having a specific gravity greater than air

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230999A (en) * 1963-11-22 1966-01-25 William L Hicks Ballasted vehicle tires
US3747660A (en) * 1971-10-04 1973-07-24 D Tibbals Ballasted vehicle tire and self-sealing thixotropic ballast composition therefor
GB1570398A (en) * 1977-02-08 1980-07-02 Dunlop Ltd Polybutene compositions
US4137206A (en) * 1977-02-14 1979-01-30 New World Products, Inc. Tire protection composition
GB2047736A (en) * 1979-04-26 1980-12-03 Gen Tire & Rubber Co Lubricant-containing pneumatic tires
GB2074955A (en) * 1980-04-14 1981-11-11 Uniroyal Englebert Gmbh Run-flat tyre and wheel assemblies
US5083596A (en) * 1989-11-17 1992-01-28 Hiroshi Kato Pressurized with a fluid having a specific gravity greater than air
US5073217A (en) * 1990-10-17 1991-12-17 Fogal Robert D Method of balancing a vehicle wheel assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6129797A (en) * 1994-05-31 2000-10-10 M&R Tire Products Inc. Tire balancing
WO2014120434A1 (fr) 2013-01-29 2014-08-07 Halliburton Energy Services, Inc. Fluides de puits de forage comprenant des particules minérales et procédés s'r rapportant

Also Published As

Publication number Publication date
AU682376B2 (en) 1997-10-02
JPH09501368A (ja) 1997-02-10
AU7066194A (en) 1995-01-17
EP0705174A1 (fr) 1996-04-10
CA2098643C (fr) 2002-01-29
CA2098643A1 (fr) 1994-12-18

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