EP0956211A1 - Chambre a air - Google Patents

Chambre a air

Info

Publication number
EP0956211A1
EP0956211A1 EP97900328A EP97900328A EP0956211A1 EP 0956211 A1 EP0956211 A1 EP 0956211A1 EP 97900328 A EP97900328 A EP 97900328A EP 97900328 A EP97900328 A EP 97900328A EP 0956211 A1 EP0956211 A1 EP 0956211A1
Authority
EP
European Patent Office
Prior art keywords
inner tube
section
intermediate member
tapered
combination
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Withdrawn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
EP97900328A
Other languages
German (de)
English (en)
Inventor
Rhoderick Jonathan Spencer Baker
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.)
Jannock Ltd
Original Assignee
Jannock Ltd
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 Jannock Ltd filed Critical Jannock Ltd
Publication of EP0956211A1 publication Critical patent/EP0956211A1/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Withdrawn legal-status Critical Current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
    • B60C5/00—Inflatable pneumatic tyres or inner tubes
    • B60C5/10—Inflatable pneumatic tyres or inner tubes formed as a single discontinuous ring with contiguous ends which may be connected together

Definitions

  • This invention relates to an inner tube for use with a pneumatic tyre particularly, though not exclusively, for a bicycle or a motor cycle.
  • annular tyre carcase contains an annular inner tube.
  • the inner tube can then be repaired to restore it to air tightness and any further repairs made to the tyre carcase.
  • the repaired combination is then replaced on the wheel.
  • the removal of a front wheel inner tube is not usually a problem.
  • One component of the device is preferably an integral part of the sealed end and a valve stem is utilised as a component of the device.
  • the tube ends are for example planar and one component is a thin flexible elastic tab vulcanised or attached to one tube end and which has an aperture through which a valve stem attached near the other tube end can be inserted.
  • an inner tube for use with a pneumatic tyre casing having an internal volume with a specific mean length and a specific cross section; the inner tube being in the form of a thin flexible cylinder with closed ends; the ends being tapered or stepped so that when located within a pneumatic tyre as aforesaid the end of the inner tube are adapted to overlay one another to provide a scarfed joint between the ends, the resulting scarfed section having an overall cross section substantially similar to that of the remainder of a non-overlapping section of tube.
  • each end of the inner tube includes a plane section lying at an acute angle to a longitudinal axis of the inner tube, the plane sections, at least when the inner tube is in use, overlay and are juxtaposed with one another to provide the scarfed joint.
  • each end of the inner tube in of conical or frusto conical shape and overlay one another to provide the scarfed joint as aforesaid.
  • the inner tube is adapted to receive between the tapered or stepped ends an intermediate member such that the each tapered or stepped end of the inner tube is adapted to overly a complementary tapered section of the intermediate member; the intermediate member being shaped so that in use the inner tube and the intermediate member serve to provide in combination an inner tube having a cross section of substantially uniform section along the axial length of the combination.
  • a combination of a pneumatic tyre casing, an inner tube with a means for applying pneumatic inflation to the inner rube characterised by an inner tube according to the first aspect or any preferred version thereof.
  • a wheel equipped with a combination according to the second aspect is provided.
  • a vehicle having at least one ground engaging wheel according to the third aspect.
  • the inner tube on a cycle or other pneumatically tyred vehicle wheel can be replaced without having to remove the wheel from its working position.
  • This can be a particular benefit in relation to a rear wheel of a bicycle since apart from the tyre fitting operation there is no need to re-connect a drive chain or shaft.
  • an inner tube with ends tapered, stepped or otherwise providing for a scarfed joint by overlapping the ends around a wheel and or with an intermediate member it becomes possible to provide a single size of inner tube which will fit a number of different sizes of tyre casing.
  • the ends can be tapered with a pair of plane or other complementary faces for juxtaposition or can be of conical or frusto conical shape. Inflation of the inner tube when once it is in place will serve to cause the ends of the plastic inner tube to expand to fill the space available to them. If required any intervening space can packed with inert material.
  • Figure 1 is a side view
  • Figure 2A shows an inner tube
  • Figure 2B shows a part sectioned view of a tyre showing the end regions of the inner tube of Figure 2 A when in use;
  • Figure 3 is a section on section III-III of Figure 2B with component parts in a first relative position
  • Figure 4 shows the components of Figure 2B with component parts in a second relative position
  • Figure 5 shows an arrangement similar to that of Figure 2B but with an additional component. MODES FOR CARRYING OUT THE INVENTION
  • a bicycle 11 has a front wheel 12 and rear wheel 13 of known type.
  • the rear wheel 13 comprises a rim 14 mounted by spokes 15 on a central hub 16.
  • the rear wheel 13 is driven by way of pedals P and drive chain C.
  • the rear wheel 13 is equipped with a tyre 17 internally pressurised by means of an inner tube which can be inflated by way of valve 18.
  • a conventional inner tube is in the form of an annulus with an internal diameter corresponding to the outside diameter of the wheel rim on which it is located.
  • the mean circumferential length of such a conventional inner tube corresponds to the mean circumferential length L of the tyre that is to say a length approximately mid-way between the internal circumference L' of the tyre 17 (corresponding to bead circumference) and the outside circumference L" of the tyre (corresponding to the tread circumference).
  • FIG. 1 This shows an inner tube 40 in the form of a hollow cylinder with wall 41 and end walls 42, 43 which are tapered and effectively parallel to one another.
  • Overall length M of the inner tube 40 is longer than the mean length L of a conventional inner tube described earlier by an amount corresponding to length N of one, but not both, of tapered end walls 42, 43.
  • Figure 2B shows the inner tube 40 when located in a working position within tyre 17. End sections 42, 43 overlap one another so that in combination they provide a scarf joint with a similar radial thickness to the remainder of the inner tube. Consequently the inner tube 40 provides support for the tyre 17 over virtually the entire internal length of the tyre.
  • the end walls can provide for the scarfed overlap arrangement such as by a stepped end sections.
  • the inner tube can be used in tyres of different size, that is to say which vary in mean circumferential length.
  • One advantage is that a limited number of sizes of inner tubes according to the present invention can be stocked for use with a greater number of tyre casings.
  • Figure 5 shows an arrangement of components similar to that of Figure 3B where an alternative or additional means is provided to increase the effective length of the inner tube 40 means of an intermediate member 51 lying between the end walls 42, 43 so that the end walls 42, 43 overlap, respectively, ends face 52, 53 of the member 51 rather than themselves to proved the scarfed joint.
  • the intermediate member 51 can either be a separately inflatable flexible member or a solid member to provide an inner tube combination where the inner tube and intermediate member are of substantially constant cross section throughout their axial length.
  • the ends 42, 43 of the inner tube 40 can be secured to one another by an adhesive.
  • packing material can be added to ensure substantially uniform interior support for the tyre carcase.
  • the inner tube 30 Because of the cylindrical form of the inner tube 30 it is readily fed onto the rim with the wheel 13 still in place and with its drive chain C still connected. Once the inner tube 30 has been fully fed into place the inner tube 30 is inflated by way of air valve a causing the tyre 17 to be fully supported with rims 17', 17" seated symmetrically on the rim 14. The end walls 32, 33 of inner tube 30, when located within the tyre casing 17 and with the inner tube 30 correctly inflated, abut one another so that for practical purposes the casing 17 is supported virtually throughout its interior length. INDUSTRIAL APPLICABILITY
  • the present invention provides for an inner tube, for use with a pneumatic tyre casing, of simpler construction and capable of being more readily replaced in use than a conventional inner tube.
  • the exemplary embodiments describe an inner tube having ends which include a pair of overlapping faces to provide a scarfed joint.
  • a joint can also be provided by having conical or frusto conical ends to the tyres.
  • ends will provide acceptable performance even though the overlapping ends may not wholly conform in cross section to the remaining cross section of the tyre lying between the ends.
  • the inner tube is of inherently plastic material when inflated the overlapping ends tend to expand to fill the space available to them.
  • each inner tube is shorter in length than the circumference of the tyre.
  • each inner tube can be individually inflated to provide for the tyre to be supported substantially uniformly around its internal circumference.
  • the inner tube and inner tube tyre of the present invention are particularly concerned for use with bicycle and motor cycles. However similar d evices could be used for cars and other equipment having ground engaging wheels utilising inflatable inner tubes and tyres. An inner tube of the present invention could also be used, typically in an emergency, to provide a temporary repair for a deflated tyre until a service location can be reached.

Landscapes

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

Abstract

Cette invention concerne une chambre à air conçue pour une enveloppe de pneumatique gonflable ayant un volume interne de longueur moyenne spécifique et de section transversale spécifique. Cette chambre à air a la forme d'un fin cylindre souple dont les extrémités fermées sont à front oblique ou échelonné de telle sorte que, une fois placée à l'intérieur du pneumatique gonflable, ses extrémités se recouvrent l'une l'autre de façon à constituer entre elles une jonction bout à bout, la partie à recouvrement ayant une section transversale sensiblement similaire à celle du reste de la partie sans recouvrement de la chambre à air. Il est également possible de placer, entre les extrémités à front oblique ou échelonné de la chambre à air, un élément intermédiaire tel que chacune des extrémités à front oblique ou échelonné de la chambre à air recouvre une partie à front oblique complémentaire de l'élément intermédiaire, ledit élément intermédiaire ayant une forme telle que, en cours d'utilisation, la chambre à air et l'élément intermédiaire sont associés pour constituer une chambre à air ayant une section transversale sensiblement uniforme suivant l'axe de la combinaison.
EP97900328A 1996-01-12 1997-01-10 Chambre a air Withdrawn EP0956211A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9600662 1996-01-12
GBGB9600662.2A GB9600662D0 (en) 1996-01-12 1996-01-12 Pneumatic inner tube
PCT/GB1997/000079 WO1997025215A1 (fr) 1996-01-12 1997-01-10 Chambre a air

Publications (1)

Publication Number Publication Date
EP0956211A1 true EP0956211A1 (fr) 1999-11-17

Family

ID=10786974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97900328A Withdrawn EP0956211A1 (fr) 1996-01-12 1997-01-10 Chambre a air

Country Status (4)

Country Link
EP (1) EP0956211A1 (fr)
AU (1) AU1391397A (fr)
GB (1) GB9600662D0 (fr)
WO (1) WO1997025215A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19817046A1 (de) * 1998-04-17 1999-10-21 Gerd Steinbock Fahrradschlauch
GB2378159A (en) * 2001-07-30 2003-02-05 Paul Cowie Bicycle inner tube
US7290577B2 (en) * 2004-05-21 2007-11-06 Garry L. Rumbaugh Tire with air-flow restrictor
GB2416332A (en) * 2004-07-17 2006-01-25 William Desmond Sadler Cycle inner tube
DE102005006805A1 (de) * 2004-08-15 2006-08-17 Jetten, Adolf Offener Radschlauch
NL1036302C2 (nl) * 2008-12-10 2009-07-14 Johannes Petrus Starke Fietsbinnenband die niet aaneengesloten is maar de vorm heeft van een worst met losse naadoverlapping welke het mogelijk maakt de band met slechts een bandenlichter snel en eenvoudig te verwisselen en desgewenst thuis in de keuken of badkamer te repareren.
US20120180922A1 (en) * 2009-09-29 2012-07-19 Ho-Ching Huang Inner tube of tire and method for installing such inner tube of tire
DE102011100562A1 (de) 2011-05-05 2012-11-08 Jetten Fischer Petrovan Gbr Radschlauch
US20130075002A1 (en) * 2011-09-23 2013-03-28 David GASTELUM Split inner tube
EP3683068B1 (fr) 2019-01-18 2022-01-19 GAADI Bicycle Tube GmbH Tube de roue
DE202019100294U1 (de) 2019-01-18 2019-02-28 Gaadi Bicycle Tube Gmbh Radschlauch zur Bespannung auf eine Felge (IV)
DE202019100289U1 (de) 2019-01-18 2019-03-14 Gaadi Bicycle Tube Gmbh Radschlauch zur Bespannung auf eine Felge (III)
CN109733126B (zh) * 2019-02-22 2021-03-23 许传功 断开式内胎的安装方式
IT202300004575A1 (it) * 2023-03-10 2024-09-10 Barbieri S N C Di Barbieri Nadia E Kalman Camera d’aria per ruote
TWM656369U (zh) * 2024-03-05 2024-06-01 多米卡科技有限公司 輪胎內胎

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE732710C (de) * 1941-03-01 1943-03-10 Rudolf Ruediger Geteilter Luftschlauch
FR950437A (fr) * 1947-07-29 1949-09-27 Chambre à air multiple pour roue automobile
GB645456A (en) * 1948-05-26 1950-11-01 David John Chappell Improvements in inner tubes
FR1105267A (fr) * 1954-05-21 1955-11-29 Chambre à air coupée en diagonale
NL7711463A (en) * 1977-10-19 1979-04-23 Everhardus Antonius Veldhuis Inner tube for bicycle wheel - comprises hose with closed ends butting together when fitted round wheel
DE2832546A1 (de) * 1978-07-25 1980-02-07 Metzeler Kautschuk Luftschlauch fuer fahrzeugluftreifen
DE9202345U1 (de) * 1992-02-24 1992-04-16 Behrens, Günter Schlauch für Fahrradreifen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9725215A1 *

Also Published As

Publication number Publication date
GB9600662D0 (en) 1996-03-13
WO1997025215A1 (fr) 1997-07-17
AU1391397A (en) 1997-08-01

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