EP0705174A1 - Equilibrage de pneumatique - Google Patents

Equilibrage de pneumatique

Info

Publication number
EP0705174A1
EP0705174A1 EP94919534A EP94919534A EP0705174A1 EP 0705174 A1 EP0705174 A1 EP 0705174A1 EP 94919534 A EP94919534 A EP 94919534A EP 94919534 A EP94919534 A EP 94919534A EP 0705174 A1 EP0705174 A1 EP 0705174A1
Authority
EP
European Patent Office
Prior art keywords
range
mixture
weight
beads
mesh size
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Withdrawn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
EP94919534A
Other languages
German (de)
English (en)
Inventor
Michael Heffernan
Russell J. Freeman
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.)
M&R Tire Products Inc
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
Publication of EP0705174A1 publication Critical patent/EP0705174A1/fr
Withdrawn legal-status Critical Current

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.
EP94919534A 1993-06-17 1994-06-17 Equilibrage de pneumatique Withdrawn EP0705174A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA002098643A CA2098643C (fr) 1993-06-17 1993-06-17 Equilibrage de pneus
CA2098643 1993-06-17
PCT/CA1994/000344 WO1995000347A1 (fr) 1993-06-17 1994-06-17 Equilibrage de pneumatique

Publications (1)

Publication Number Publication Date
EP0705174A1 true EP0705174A1 (fr) 1996-04-10

Family

ID=4151807

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94919534A Withdrawn EP0705174A1 (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)

Families Citing this family (5)

* 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
JP4561292B2 (ja) * 2004-10-08 2010-10-13 横浜ゴム株式会社 空気入りタイヤ
US20100101692A1 (en) * 2008-10-29 2010-04-29 International Marketing, Inc. Composition for correting force variations and vibrations of a tire-wheel assembly
US9777207B2 (en) 2013-01-29 2017-10-03 Halliburton Energy Services, Inc. Wellbore fluids comprising mineral particles and methods relating thereto
WO2023150873A1 (fr) * 2022-02-08 2023-08-17 Counteract Balancing Beads Inc. Système et procédé d'équilibrage de pneu

Family Cites Families (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
CA1104474A (fr) * 1979-04-26 1981-07-07 Tiong H. Kuan Pneu renfermant de petites antifriction et un lubrifiant pour l'usage a l'etat degonfle
DE3014213A1 (de) * 1980-04-14 1981-10-15 Uniroyal Englebert Reifen GmbH, 5100 Aachen Notlaufrad
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9500347A1 *

Also Published As

Publication number Publication date
AU682376B2 (en) 1997-10-02
WO1995000347A1 (fr) 1995-01-05
JPH09501368A (ja) 1997-02-10
CA2098643A1 (fr) 1994-12-18
AU7066194A (en) 1995-01-17
CA2098643C (fr) 2002-01-29

Similar Documents

Publication Publication Date Title
US5728243A (en) Tire balancing
US6129797A (en) Tire balancing
US3463551A (en) Liquid wheel balancing system
JP4688803B2 (ja) バランス媒体を内包したバランスウェイトカートリッジ
US3953074A (en) Automatic and substantially permanent wheel balancing device
JP3305713B2 (ja) 車輪組立体をバランスさせる方法
US20060001309A1 (en) Ceramic balance beads and method of tire balancing
US3346303A (en) Dynamic wheel balancer
CA2098643C (fr) Equilibrage de pneus
US3316021A (en) Wheel balancer
US6249971B1 (en) Method and system for tire/wheel disturbance compensation
US6581444B2 (en) Wheel balancing method
US2737420A (en) Means for balancing wheels
US20070126279A1 (en) Uniformity and stabilizing system for a tire/wheel assembly
AU716263B2 (en) Tire balancing
CN102216061A (zh) 修正轮胎-车轮组件的力变化和振动的成分
US4179162A (en) Dynamic wheel balancing system
US20020000275A1 (en) Method for equalizing radial and lateral force variations at the tire/road footprint of a pneumatic tire
US7022753B2 (en) Composition for equalizing radial and lateral force variations at the tire/road footprint of a pneumatic tire
MX2011007237A (es) Composicion para corregir los desbalanceos, variaciones de fuerza y vibraciones de montaje de llanta-rueda.
US20030155055A1 (en) Tire balancing using coated beads
US4215772A (en) Retarder for gravity conveyors
US3202459A (en) Wheel balancer
CA2402792C (fr) Equilibrage de pneus au moyen de talons revetus
US20180252293A1 (en) Method and apparatus to provide dynamic rotational harmonic center of moment compensation for manufacturing imperfections in wheels

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

17P Request for examination filed

Effective date: 19960117

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19961220

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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: 19971014