USRE30518E - Pneumatic tire wear indicating tread pattern - Google Patents
Pneumatic tire wear indicating tread pattern Download PDFInfo
- Publication number
- USRE30518E USRE30518E US06/016,834 US1683479A USRE30518E US RE30518 E USRE30518 E US RE30518E US 1683479 A US1683479 A US 1683479A US RE30518 E USRE30518 E US RE30518E
- Authority
- US
- United States
- Prior art keywords
- pattern
- tread
- pneumatic tire
- tire
- drainage groove
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 10
- 238000005299 abrasion Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims 2
- 238000000465 moulding Methods 0.000 abstract description 16
- 239000011159 matrix material Substances 0.000 abstract description 15
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000004753 textile Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
-
- 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/24—Wear-indicating arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C2037/80—Identifying, e.g. coding, dating, marking, numbering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D2030/0607—Constructional features of the moulds
- B29D2030/0612—Means for forming recesses or protrusions in the tyres, e.g. grooves or ribs, to create the tread or sidewalls patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D2030/0607—Constructional features of the moulds
- B29D2030/0613—Means, e.g. sipes or blade-like elements, for forming narrow recesses in the tyres, e.g. cuts or incisions for winter tyres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10027—Tires, resilient with wear indicating feature
Definitions
- This invention relates to pneumatic tires.
- a pneumatic tire comprises a tread provided with at least one main drainage groove and a first, radially outer, and a second, radially inner, pattern each comprising one or more radially-disposed slots, sipes, grooves, incisions, holes or the like, the first pattern changing to the second pattern at a level situated radially inwardly of and substantially parallel to the tread ground-contacting surface of the tire, said level being a predetermined amount less than the depth of the main drainage groove, the second pattern being distinctively different from the first and comprising a wholly radial continuation of part only of said first pattern.
- the second pattern is substantially undetectable from the exterior of the tire until at least a portion of the tread equal in depth to the first pattern has been worn away.
- the said predetermined amount is somewhat greater e.g. 1 mm. greater, than the minimum tread pattern depth allowed under local laws or regulations, e.g. 1 mm. or 2 mm., so that adequate prior warning is given to a tire user that the legal limit of wear is approaching.
- the second pattern is preferably so distinctively different from the first pattern that the tire user's mind is directly associated with the fact that in due time the tire will become unsafe or illegal if it is continued to be used and that it should be changed.
- the second pattern may be in the form of a warning word or several warning words repeated around the tire circumference and/or across part at least of the tire tread width.
- the invention also includes a pneumatic tire as described in any of the preceding paragraphs in which said second pattern changes to a third pattern, and perhaps to subsequent patterns, below the tread ground-contacting surface.
- All of the patterns previously referred to are preferably formed by moulding, but any other suitable method e.g. cutting or drilling, may be used.
- a tire moulding matrix comprises a plurality of projections on the tread moulding surface of the matrix the projections being for moulding a first, radially outer, and a second, radially inner, pattern in the tread of the tire incorporating at least one main drainage groove, the configuration of at least part of at least one of the said projections changing distinctively at a predetermined level which is substantially parallel to the surface of the matrix for moulding the tread ground-contacting surface of the tire and which is situated at a depth which is a predetermined amount less than the depth of the projection for moulding the main drainage groove, the said second pattern comprising a wholly radial extension of part only of said first pattern.
- FIG. 1 shows a fragmentary perspective view of a tread moulding matrix according to a first embodiment of the invention.
- FIG. 2 shows a fragmentary perspective view of a tread moulding matrix according to a second embodiment of the invention.
- FIG. 3 shows a plan view of part of the first pattern of the tread of a tire according to the second embodiment.
- FIG. 4 shows a plan view of part of the second pattern of the tread of a tire according to the second embodiment.
- a first embodiment comprises a pneumatic car tire the tread pattern of which is moulded by a conventional method using a mould comprising a matrix 1 (part of which is shown in FIG. 1) which is provided with a plurality of ribs 2 and pins 3 and 4.
- the ribs, 8 mm. high and of zig-zag configuration extend generally circumferentially of the mould and form generally circumferential grooves, each 8 mm. deep, in the tire tread.
- the pins some (indicated by the reference numeral 3) of which are 6 mm. high and the remainder (indicated by the reference numeral 4) 8 mm. high, form a pattern of holes in the tire tread ribs between the grooves.
- the construction of the mould matrix is such that the pins and ribs thereof can be readily withdrawn in a radial direction from the tread of the moulded tire.
- 6 mm. i.e. the first pattern of tread has been worn away in use of the tire that part of the tread pattern formed by the 6 mm. holes disappears leaving only that portion formed by the 8 mm. deep holes, i.e. the second pattern and the grooves.
- the 8 mm. deep holes form the word STOP repeated round the tire circumference which is not readily apparent in the unworn state of the tire, (being camouflaged by the 6 mm. deep holes) and which warns the motorist that there is only 2 mm. of tread rubber remaining in that area of the tread surface i.e. his tire will soon become unsafe and probably illegal and that he should replace the tire before further wear may render it unsafe to use.
- Words other than STOP could be used either additionally or alternatively.
- some or all of the pins are enlarged at their extremities so that a bulbous chamber is formed at the base of some or all of the holes formed in the tire tread.
- Preferably only the 8 mm. pins are enlarged 2 mm. from their ends so that a chamber 2 mm. deep is formed in the tire.
- a more distinctive pattern appears to warn the motorist.
- the drainage of a tire tread provided with bulbous chambers is better compared with that of a tire not so provided, especially at the time of the tire's life when only 2 mm. of tread remains.
- a second embodiment (as shown in FIGS. 2, 3 and 4) of the invention comprises a tire (see FIG. 3) having a tread provided with a plurality of grooves 5 and slots 6 some of the slots or part of each slot opening out into a substantially cylindrical chamber situated radially inwardly of the tread surface with its axis parallel thereto.
- This tire is moulded by means of a moulding matrix 7 (see FIG. 2) provided with ribs 2 (to form grooves) and knife blades 8 (to form the slots) some of which or part of each of which have joined thereto, e.g. by welding, or have integrally formed therewith a cylindrical portion 9 e.g. a wire or rod, of diameter greater than the thickness of the knife blades.
- the cylindrical portion 9 wire or rod is bent into the form of a letter in a plane parallel to that surface 10 of the matrix for moulding the ground-contacting surface of the tread, while the knife blade to which it is joined has a similar form with one or more additional features (for example that part of a blade shown as 11 in FIG. 2) so as effectively to disguise the identity of the letter.
- additional features for example that part of a blade shown as 11 in FIG. 2
- the knife blades thus form the first pattern in the tread while the wires or rods form the second pattern.
- the tire tread is provided with a pattern of slots some of which or part of each of which do not open out into chambers but merely are constructed to be deeper than the remainder of each slot or slots.
- This pattern is moulded using a matrix incorporating knife blades some of which or part of each of which are deeper than the remainder of each blade or the blades.
- the difference between the two depths of blade or blades can be 2 or 3 mm. i.e. equal to the local minimum allowable tread depth plus an amount to provide a warning of the need to replace the tire without undue delay.
- the slots and chambers are moulded by means of a matrix provided with knife blades and to which are weakly attached e.g. by means of a weak adhesive or thin textile fibers the aforementioned wire letters.
- these letters are all wired to each other to form a ring which extends around the internal circumference of the tire mould on the radially inner extremities of the blades.
- the ring of letters remains embedded in the tire tread, the textile fibers or the adhesive bond having broken during said removal.
- the ring of letters is removed in a separate operation.
- wires or rods are replaced by U or V channels in which a thin strip of material may be retained during moulding but leaves the channel on removal of the tire from the mould.
- the moulding operation effectively embeds this strip into the tread rubber at the base of the slot or slots.
- the material inserted into the chambers should be such as to make the appearance of the second pattern, when the tread has worn away sufficiently to expose it, even more distinctive.
- vulcanized or unvulcanized rubber or plastics material may be inserted of a color different from the remainder of the tread rubber.
- materials which may be inserted are materials which generate a noise on becoming uncovered when the tread is sufficiently worn, textile cords, or rubber of greater or lesser abrasion resistance than the tread rubber.
- the words of rubber will stand proud of or recessed below, respectively, the tread surface. It can be arranged either that the inserted material remains to form part of the wearing surface of the tread or becomes detached under the influence of centrifugal force to leave remaining a recognisable impression in the tread rubber.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Tires In General (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Treatment Of Fiber Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A pneumatic tire and moulding matrix therefore, the tire tread incorporating a traction pattern which changes distinctively when only a predetermined amount of tread rubber remains, thus warning the tire user that his tire is approaching the legal or safe limit and will soon have to be replaced or retreaded.
Description
This invention relates to pneumatic tires.
According to the invention a pneumatic tire comprises a tread provided with at least one main drainage groove and a first, radially outer, and a second, radially inner, pattern each comprising one or more radially-disposed slots, sipes, grooves, incisions, holes or the like, the first pattern changing to the second pattern at a level situated radially inwardly of and substantially parallel to the tread ground-contacting surface of the tire, said level being a predetermined amount less than the depth of the main drainage groove, the second pattern being distinctively different from the first and comprising a wholly radial continuation of part only of said first pattern.
Preferably the second pattern is substantially undetectable from the exterior of the tire until at least a portion of the tread equal in depth to the first pattern has been worn away.
Preferably the said predetermined amount is somewhat greater e.g. 1 mm. greater, than the minimum tread pattern depth allowed under local laws or regulations, e.g. 1 mm. or 2 mm., so that adequate prior warning is given to a tire user that the legal limit of wear is approaching.
The second pattern is preferably so distinctively different from the first pattern that the tire user's mind is directly associated with the fact that in due time the tire will become unsafe or illegal if it is continued to be used and that it should be changed. For example, the second pattern may be in the form of a warning word or several warning words repeated around the tire circumference and/or across part at least of the tire tread width.
The invention also includes a pneumatic tire as described in any of the preceding paragraphs in which said second pattern changes to a third pattern, and perhaps to subsequent patterns, below the tread ground-contacting surface.
All of the patterns previously referred to are preferably formed by moulding, but any other suitable method e.g. cutting or drilling, may be used.
According to the invention also a tire moulding matrix comprises a plurality of projections on the tread moulding surface of the matrix the projections being for moulding a first, radially outer, and a second, radially inner, pattern in the tread of the tire incorporating at least one main drainage groove, the configuration of at least part of at least one of the said projections changing distinctively at a predetermined level which is substantially parallel to the surface of the matrix for moulding the tread ground-contacting surface of the tire and which is situated at a depth which is a predetermined amount less than the depth of the projection for moulding the main drainage groove, the said second pattern comprising a wholly radial extension of part only of said first pattern.
Embodiments of the invention will now be described by way of example with reference to the accompanying drawings of which:
FIG. 1 shows a fragmentary perspective view of a tread moulding matrix according to a first embodiment of the invention.
FIG. 2 shows a fragmentary perspective view of a tread moulding matrix according to a second embodiment of the invention.
FIG. 3 shows a plan view of part of the first pattern of the tread of a tire according to the second embodiment.
FIG. 4 shows a plan view of part of the second pattern of the tread of a tire according to the second embodiment.
A first embodiment comprises a pneumatic car tire the tread pattern of which is moulded by a conventional method using a mould comprising a matrix 1 (part of which is shown in FIG. 1) which is provided with a plurality of ribs 2 and pins 3 and 4. The ribs, 8 mm. high and of zig-zag configuration extend generally circumferentially of the mould and form generally circumferential grooves, each 8 mm. deep, in the tire tread. The pins, some (indicated by the reference numeral 3) of which are 6 mm. high and the remainder (indicated by the reference numeral 4) 8 mm. high, form a pattern of holes in the tire tread ribs between the grooves.
The construction of the mould matrix is such that the pins and ribs thereof can be readily withdrawn in a radial direction from the tread of the moulded tire. When 6 mm. i.e. the first pattern, of tread has been worn away in use of the tire that part of the tread pattern formed by the 6 mm. holes disappears leaving only that portion formed by the 8 mm. deep holes, i.e. the second pattern and the grooves. The 8 mm. deep holes form the word STOP repeated round the tire circumference which is not readily apparent in the unworn state of the tire, (being camouflaged by the 6 mm. deep holes) and which warns the motorist that there is only 2 mm. of tread rubber remaining in that area of the tread surface i.e. his tire will soon become unsafe and probably illegal and that he should replace the tire before further wear may render it unsafe to use. Words other than STOP could be used either additionally or alternatively.
In a modified form (not illustrated) of the first embodiment some or all of the pins are enlarged at their extremities so that a bulbous chamber is formed at the base of some or all of the holes formed in the tire tread. Preferably only the 8 mm. pins are enlarged 2 mm. from their ends so that a chamber 2 mm. deep is formed in the tire. Thus when 6 mm. of tread has been worn away a more distinctive pattern appears to warn the motorist. In addition the drainage of a tire tread provided with bulbous chambers is better compared with that of a tire not so provided, especially at the time of the tire's life when only 2 mm. of tread remains.
A second embodiment (as shown in FIGS. 2, 3 and 4) of the invention comprises a tire (see FIG. 3) having a tread provided with a plurality of grooves 5 and slots 6 some of the slots or part of each slot opening out into a substantially cylindrical chamber situated radially inwardly of the tread surface with its axis parallel thereto. This tire is moulded by means of a moulding matrix 7 (see FIG. 2) provided with ribs 2 (to form grooves) and knife blades 8 (to form the slots) some of which or part of each of which have joined thereto, e.g. by welding, or have integrally formed therewith a cylindrical portion 9 e.g. a wire or rod, of diameter greater than the thickness of the knife blades. The cylindrical portion 9 wire or rod is bent into the form of a letter in a plane parallel to that surface 10 of the matrix for moulding the ground-contacting surface of the tread, while the knife blade to which it is joined has a similar form with one or more additional features (for example that part of a blade shown as 11 in FIG. 2) so as effectively to disguise the identity of the letter. Several of these blades with the wire letters attached are incorporated in the tire moulding matrix, the several letters forming the mirror image of the warning word STOP. The knife blades thus form the first pattern in the tread while the wires or rods form the second pattern.
In use of a tire moulded in this way when most of the tread has been worn away the chambers appear (as shown in FIG. 4) and because they are wider than the slots and in the form of a warning word should be sufficiently distinctive to cause the motorist to be conscious of the need soon to renew the tire.
In a first modification (not shown) of this second embodiment, the tire tread is provided with a pattern of slots some of which or part of each of which do not open out into chambers but merely are constructed to be deeper than the remainder of each slot or slots. This pattern is moulded using a matrix incorporating knife blades some of which or part of each of which are deeper than the remainder of each blade or the blades. The difference between the two depths of blade or blades can be 2 or 3 mm. i.e. equal to the local minimum allowable tread depth plus an amount to provide a warning of the need to replace the tire without undue delay.
In a second modification (not shown) of the second embodiment the slots and chambers are moulded by means of a matrix provided with knife blades and to which are weakly attached e.g. by means of a weak adhesive or thin textile fibers the aforementioned wire letters. In addition these letters are all wired to each other to form a ring which extends around the internal circumference of the tire mould on the radially inner extremities of the blades.
After moulding and on removal of the moulding matrix from the tire the ring of letters remains embedded in the tire tread, the textile fibers or the adhesive bond having broken during said removal. The ring of letters is removed in a separate operation.
It is an advantage of this modification that the second pattern i.e. the letters may be changed without changing the complete mould matrix.
In a third modification (not shown) of the second embodiment the wires or rods are replaced by U or V channels in which a thin strip of material may be retained during moulding but leaves the channel on removal of the tire from the mould. Thus the moulding operation effectively embeds this strip into the tread rubber at the base of the slot or slots.
The material inserted into the chambers should be such as to make the appearance of the second pattern, when the tread has worn away sufficiently to expose it, even more distinctive. For example, vulcanized or unvulcanized rubber or plastics material may be inserted of a color different from the remainder of the tread rubber. Thus, for example, when sufficient tread has worn away a colored word appears in the tread to warn the motorist of the small amount of tread rubber remaining. Other examples of materials which may be inserted are materials which generate a noise on becoming uncovered when the tread is sufficiently worn, textile cords, or rubber of greater or lesser abrasion resistance than the tread rubber. In this last example the words of rubber will stand proud of or recessed below, respectively, the tread surface. It can be arranged either that the inserted material remains to form part of the wearing surface of the tread or becomes detached under the influence of centrifugal force to leave remaining a recognisable impression in the tread rubber.
Claims (3)
- is worn away the second visually significant pattern is exposed..]. 12. A pneumatic tire comprising a tread provided with at least one main drainage groove and a first, radially outer, and a second, radially inner, pattern each comprising at least one tread element selected from the group consisting of slots, sipes, grooves, incisions and the like, the first pattern changing to the second pattern at a level situated radially inwardly of and substantially parallel to the tread ground contacting surface of the tire, said level being a predetermined amount less than the depth of the main drainage groove, the second pattern being distinctively different from the first, being located immediately radially inwardly of and in radial alignment with said first pattern, and being in the form of
- at least one warning word. 13. A pneumatic tire comprising a tread provided with at least one main drainage groove and a first, radially outer, and a second, radially inner, pattern each comprising at least one tread element selected from the group consisting of slots, sipes, grooves, incisions and the like, the first pattern changing to the second pattern at a level situated radially inwardly of and substantially parallel to the tread ground contacting surface of the tire, said level being a predetermined amount less than the depth of the main drainage groove, the second pattern being distinctively different from the first, being located immediately radially inwardly of and in radial alignment with said first pattern, and being in the form of at least one warning word repeated
- around the tire circumference. 14. A pneumatic tire comprising a tread provided with at least one main drainage groove and a first, radially outer, and a second, radially inner, pattern each comprising at least one tread element selected from the group consisting of slots, sipes, grooves, incisions and the like, the first pattern changing to the second pattern at a level situated radially inwardly of and substantially parallel to the tread ground contacting surface of the tire, said level being a predetermined amount less than the depth of the main drainage groove, the second pattern being distinctively different from the first, being located immediately radially inwardly of and in radial alignment with said first pattern, and being in the form of at least one warning word repeated across the tire tread width.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB31199/68 | 1968-06-29 | ||
GB31199/68A GB1275734A (en) | 1968-06-29 | 1968-06-29 | Improvements in or relating to pneumatic tyres |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US04834714 Reissue | 1969-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE30518E true USRE30518E (en) | 1981-02-17 |
Family
ID=10319492
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US834714A Expired - Lifetime US3653422A (en) | 1968-06-29 | 1969-06-19 | Pneumatic tires |
US06/016,834 Expired - Lifetime USRE30518E (en) | 1968-06-29 | 1979-03-02 | Pneumatic tire wear indicating tread pattern |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US834714A Expired - Lifetime US3653422A (en) | 1968-06-29 | 1969-06-19 | Pneumatic tires |
Country Status (8)
Country | Link |
---|---|
US (2) | US3653422A (en) |
AT (1) | AT296797B (en) |
DE (1) | DE1933148A1 (en) |
FR (1) | FR2011799A1 (en) |
GB (1) | GB1275734A (en) |
IE (1) | IE33792B1 (en) |
LU (1) | LU58972A1 (en) |
NL (1) | NL6909682A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5428437A (en) * | 1994-04-25 | 1995-06-27 | Xerox Corporation | Roll member wear indicator |
US6883567B2 (en) * | 2000-08-10 | 2005-04-26 | The Yokohama Rubber Co., Ltd. | Pneumatic tire having wear indicator |
US20050269003A1 (en) * | 2002-12-02 | 2005-12-08 | Kensaku Fujii | Tire with rotation period indication hole, and method of indicating tire rotation period |
US20060037683A1 (en) * | 2004-08-23 | 2006-02-23 | Andre Cuny | Tire tread wear indicator and molding device for forming a tread wear indicator |
USD742302S1 (en) | 2013-09-10 | 2015-11-03 | Cooper Tire & Rubber Company | Tire tread |
USD742808S1 (en) | 2013-09-10 | 2015-11-10 | Cooper Tire & Rubber Company | Tire tread |
USD768053S1 (en) | 2013-09-10 | 2016-10-04 | Cooper Tire & Rubber Company | Tire tread with square visual wear indicator |
USD768558S1 (en) | 2013-09-10 | 2016-10-11 | Cooper Tire & Rubber Company | Tire tread with linear hole pattern visual wear indicator |
USD770362S1 (en) | 2013-09-10 | 2016-11-01 | Cooper Tire & Rubbery Company | Tire tread with circular hole pattern visual wear indicator |
USD772145S1 (en) | 2013-09-10 | 2016-11-22 | Cooper Tire & Rubber Company | Tire tread with square visual wear indicator |
US10821783B2 (en) | 2013-09-10 | 2020-11-03 | Cooper Tire & Rubber Company | Visual wear indicator |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL141130B (en) * | 1971-06-21 | 1974-02-15 | Vredestein Rubber | TIRE FOR LIGHT VEHICLES. |
US4226274A (en) * | 1978-09-18 | 1980-10-07 | Awaya Herbert Y | Rubber tire with wear indicator therein |
US5303756A (en) * | 1991-09-30 | 1994-04-19 | Hill James L | Tire for indicating tread wear and method of manufacturing the same |
GB2297297A (en) * | 1995-01-27 | 1996-07-31 | Wang Kung Hsieh | Tire tread wear indication |
US6634222B2 (en) | 2002-01-17 | 2003-10-21 | O'brien Patrick Michael | System for removing vehicles having unsafe tires from public roadways |
US7291237B2 (en) * | 2005-03-24 | 2007-11-06 | O'brien John Michael | Method of making tire having wear indicators |
FR2883508B1 (en) * | 2005-03-25 | 2007-05-18 | Michelin Soc Tech | WEAR INDICATOR FOR PNEUMATIC |
SK472006A3 (en) * | 2006-03-08 | 2007-10-04 | Matador A. S. | Tire for motor vehicle contains indicator of wear tire profile |
NL2000272C2 (en) * | 2006-10-11 | 2008-04-14 | Vredestein Banden B V | Multi-way valve for controlling dosing and mixing of fluid flow, has chamber with two substantially parallel channels, and drain that opens or closes channels by controllable electromagnet |
US8695655B2 (en) * | 2007-10-15 | 2014-04-15 | The Goodyear Tire & Rubber Company | Tire tread with tread wear indicator |
FR2917668B1 (en) * | 2008-07-31 | 2010-02-26 | Michelin Soc Tech | WEAR INDICATOR FOR PNEUMATIC |
MX2011002468A (en) * | 2008-09-11 | 2011-04-05 | Michelin Rech Tech | Variable surface area tire tread and tire. |
CA2738842C (en) * | 2008-10-03 | 2013-04-16 | Michelin Recherche Et Technique S.A. | Undulated progressive tire mold element |
FR2940185B1 (en) | 2008-12-22 | 2010-12-17 | Michelin Soc Tech | ROLLER BAND WITH IMPROVED DRAINAGE VOLUME |
CN103180152B (en) | 2010-10-29 | 2016-03-09 | 米其林集团总公司 | There is the tire protector of multiple wearing layer |
JP5599692B2 (en) * | 2010-11-02 | 2014-10-01 | 東洋ゴム工業株式会社 | Pneumatic tire |
DE102014218580A1 (en) | 2014-09-16 | 2016-03-17 | Continental Reifen Deutschland Gmbh | Vehicle tires |
US10882362B2 (en) | 2014-09-30 | 2021-01-05 | Compagnie Generale Des Etablissements Michelin | Stiffeners for sipe-molding members |
BR112017012171A2 (en) | 2014-12-08 | 2018-01-02 | Bridgestone Americas Tire Operations Llc | lamination for tactile misalignment detection |
WO2017058224A1 (en) | 2015-09-30 | 2017-04-06 | Compagnie Generale Des Etablissements Michelin | Egg crate sidewall features for sipes |
WO2017058226A1 (en) | 2015-09-30 | 2017-04-06 | Compagnie Generale Des Etablissements Michelin | Variable thickness sipes |
EP3225428B1 (en) * | 2016-04-01 | 2020-05-27 | Nokian Renkaat Oyj | A mould for making a wear indicator into a pneumatic tyre and a pneumatic tyre comprising a wear indicator |
US10252580B2 (en) | 2017-01-24 | 2019-04-09 | The Goodyear Tire & Rubber Company | Tread wear indicator |
FR3063679A1 (en) | 2017-03-08 | 2018-09-14 | Compagnie Generale Des Etablissements Michelin | PNEUMATIC COMPRISING AT LEAST ONE WEAR INDICATOR |
US11413907B2 (en) | 2020-10-16 | 2022-08-16 | The Goodyear Tire & Rubber Company | Tire with shallow groove-based tread wear indicator |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1093310A (en) * | 1908-09-04 | 1914-04-14 | Stacy G Carkhuff | Vehicle-tire. |
US1876016A (en) * | 1932-04-21 | 1932-09-06 | Christian H Pederson | Auto tire |
DE631215C (en) * | 1934-02-25 | 1936-06-16 | Johannes Wilhelm Amsler | Automatic device indicating wear on the treads of pneumatic tires |
US2102784A (en) * | 1936-02-06 | 1937-12-21 | Socony Vacuum Oil Co Inc | Method of making a wear indicating tire |
US2164819A (en) * | 1936-12-31 | 1939-07-04 | De Witt T Hicks | Tire |
US2246479A (en) * | 1940-07-19 | 1941-06-17 | Seiberling Rubber Co | Pneumatic tire structure |
US2644984A (en) * | 1948-10-01 | 1953-07-14 | Lloyd L Felker | Apparatus for manufacturing tire treads |
US2679663A (en) * | 1950-02-01 | 1954-06-01 | Goodrich Co B F | Marking of molded articles |
US2706509A (en) * | 1950-04-01 | 1955-04-19 | Gates Rubber Co | Means for indicating tire tread wear |
US2732589A (en) * | 1956-01-31 | steadmam | ||
US2756460A (en) * | 1954-09-09 | 1956-07-31 | Lloyd L Felker | Tire tread molds |
US2770013A (en) * | 1951-02-28 | 1956-11-13 | Lloyd L Felker | Stud holders for use in tire molds |
US2848744A (en) * | 1955-11-16 | 1958-08-26 | Lloyd L Felker | Apparatus for and method of forming tire treads |
US2896281A (en) * | 1956-09-17 | 1959-07-28 | Us Rubber Co | Tire mold or the like |
FR1203290A (en) * | 1959-07-01 | 1960-01-18 | Us Rubber Co | Improvements to tire molds |
FR1294744A (en) * | 1961-01-18 | 1962-06-01 | Visual inspection of tire wear condition | |
GB1061564A (en) * | 1962-11-11 | 1967-03-15 | Dunlop Rubber Co | Improvements in or relating to pneumatic tyres |
US3432888A (en) * | 1966-11-01 | 1969-03-18 | Dunlop Tire & Rubber Corp | Tire mold |
US3467989A (en) * | 1967-04-13 | 1969-09-23 | Uniroyal Inc | Venting of tire molds |
US3546749A (en) * | 1967-07-06 | 1970-12-15 | Continental Gummi Werke Ag | Mold,especially vulcanizing mold,for vehicle tires |
US3553790A (en) * | 1969-11-10 | 1971-01-12 | Goodyear Tire & Rubber | Concealed tire vent mold |
-
1968
- 1968-06-29 GB GB31199/68A patent/GB1275734A/en not_active Expired
-
1969
- 1969-06-19 US US834714A patent/US3653422A/en not_active Expired - Lifetime
- 1969-06-20 IE IE850/69A patent/IE33792B1/en unknown
- 1969-06-24 NL NL6909682A patent/NL6909682A/xx not_active Application Discontinuation
- 1969-06-27 AT AT618069A patent/AT296797B/en not_active IP Right Cessation
- 1969-06-27 LU LU58972D patent/LU58972A1/xx unknown
- 1969-06-30 DE DE19691933148 patent/DE1933148A1/en active Pending
- 1969-06-30 FR FR6921988A patent/FR2011799A1/fr not_active Withdrawn
-
1979
- 1979-03-02 US US06/016,834 patent/USRE30518E/en not_active Expired - Lifetime
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2732589A (en) * | 1956-01-31 | steadmam | ||
US1093310A (en) * | 1908-09-04 | 1914-04-14 | Stacy G Carkhuff | Vehicle-tire. |
US1876016A (en) * | 1932-04-21 | 1932-09-06 | Christian H Pederson | Auto tire |
DE631215C (en) * | 1934-02-25 | 1936-06-16 | Johannes Wilhelm Amsler | Automatic device indicating wear on the treads of pneumatic tires |
US2102784A (en) * | 1936-02-06 | 1937-12-21 | Socony Vacuum Oil Co Inc | Method of making a wear indicating tire |
US2164819A (en) * | 1936-12-31 | 1939-07-04 | De Witt T Hicks | Tire |
US2246479A (en) * | 1940-07-19 | 1941-06-17 | Seiberling Rubber Co | Pneumatic tire structure |
US2644984A (en) * | 1948-10-01 | 1953-07-14 | Lloyd L Felker | Apparatus for manufacturing tire treads |
US2679663A (en) * | 1950-02-01 | 1954-06-01 | Goodrich Co B F | Marking of molded articles |
US2706509A (en) * | 1950-04-01 | 1955-04-19 | Gates Rubber Co | Means for indicating tire tread wear |
US2770013A (en) * | 1951-02-28 | 1956-11-13 | Lloyd L Felker | Stud holders for use in tire molds |
US2756460A (en) * | 1954-09-09 | 1956-07-31 | Lloyd L Felker | Tire tread molds |
US2848744A (en) * | 1955-11-16 | 1958-08-26 | Lloyd L Felker | Apparatus for and method of forming tire treads |
US2896281A (en) * | 1956-09-17 | 1959-07-28 | Us Rubber Co | Tire mold or the like |
FR1203290A (en) * | 1959-07-01 | 1960-01-18 | Us Rubber Co | Improvements to tire molds |
FR1294744A (en) * | 1961-01-18 | 1962-06-01 | Visual inspection of tire wear condition | |
GB1061564A (en) * | 1962-11-11 | 1967-03-15 | Dunlop Rubber Co | Improvements in or relating to pneumatic tyres |
US3432888A (en) * | 1966-11-01 | 1969-03-18 | Dunlop Tire & Rubber Corp | Tire mold |
US3467989A (en) * | 1967-04-13 | 1969-09-23 | Uniroyal Inc | Venting of tire molds |
US3546749A (en) * | 1967-07-06 | 1970-12-15 | Continental Gummi Werke Ag | Mold,especially vulcanizing mold,for vehicle tires |
US3553790A (en) * | 1969-11-10 | 1971-01-12 | Goodyear Tire & Rubber | Concealed tire vent mold |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5428437A (en) * | 1994-04-25 | 1995-06-27 | Xerox Corporation | Roll member wear indicator |
US6883567B2 (en) * | 2000-08-10 | 2005-04-26 | The Yokohama Rubber Co., Ltd. | Pneumatic tire having wear indicator |
US8584721B2 (en) * | 2002-12-02 | 2013-11-19 | Sumitomo Rubber Industries, Ltd. | Tire with rotation period indication hole, and method of indicating tire rotation period |
US20050269003A1 (en) * | 2002-12-02 | 2005-12-08 | Kensaku Fujii | Tire with rotation period indication hole, and method of indicating tire rotation period |
US20060037683A1 (en) * | 2004-08-23 | 2006-02-23 | Andre Cuny | Tire tread wear indicator and molding device for forming a tread wear indicator |
US7670123B2 (en) * | 2004-08-23 | 2010-03-02 | The Goodyear Tire & Rubber Company | Tire tread wear indicator molding device for forming a tread wear indicator |
US20070163691A1 (en) * | 2004-08-23 | 2007-07-19 | The Goodyear Tire & Rubber Company | Tire tread wear indicator and molding device for forming a tread wear indicator |
USD742302S1 (en) | 2013-09-10 | 2015-11-03 | Cooper Tire & Rubber Company | Tire tread |
USD742808S1 (en) | 2013-09-10 | 2015-11-10 | Cooper Tire & Rubber Company | Tire tread |
USD768053S1 (en) | 2013-09-10 | 2016-10-04 | Cooper Tire & Rubber Company | Tire tread with square visual wear indicator |
USD768558S1 (en) | 2013-09-10 | 2016-10-11 | Cooper Tire & Rubber Company | Tire tread with linear hole pattern visual wear indicator |
USD770362S1 (en) | 2013-09-10 | 2016-11-01 | Cooper Tire & Rubbery Company | Tire tread with circular hole pattern visual wear indicator |
USD772145S1 (en) | 2013-09-10 | 2016-11-22 | Cooper Tire & Rubber Company | Tire tread with square visual wear indicator |
US10821783B2 (en) | 2013-09-10 | 2020-11-03 | Cooper Tire & Rubber Company | Visual wear indicator |
Also Published As
Publication number | Publication date |
---|---|
GB1275734A (en) | 1972-05-24 |
NL6909682A (en) | 1969-12-31 |
IE33792B1 (en) | 1974-10-30 |
US3653422A (en) | 1972-04-04 |
IE33792L (en) | 1969-12-29 |
AT296797B (en) | 1972-02-25 |
LU58972A1 (en) | 1969-11-12 |
DE1933148A1 (en) | 1970-08-27 |
FR2011799A1 (en) | 1970-03-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
USRE30518E (en) | Pneumatic tire wear indicating tread pattern | |
US4154564A (en) | Tire molding matrix | |
US5980668A (en) | Tire with rotation time tread wear indicator | |
KR101148359B1 (en) | Tire tread wear indicator and molding device for forming a tread wear indicator | |
US3929179A (en) | Indicator device for indicating tread wear and tire incorporating the indicator | |
US20080023116A1 (en) | Recessed tread wear indicator | |
US7784508B2 (en) | Wear indicator for a tire | |
US20180326795A1 (en) | Tread wear indicator | |
US20200331301A1 (en) | Tread wear indicator | |
JP4454936B2 (en) | Regroovable tread and regrooving method | |
US2302027A (en) | Pneumatic tire | |
US4442618A (en) | Decorative ornamentation for a rubber article and method for making same | |
US1880430A (en) | Tire mold | |
GB2347393A (en) | Tyres for land vehicles | |
US2587297A (en) | Matrix for tire treads with lateral traction slits | |
GB2303590A (en) | Tyre tread wear indication | |
GB2286161A (en) | Tyre tread wear indication | |
JP2017536535A (en) | Tire wear monitoring device | |
US3605847A (en) | Pneumatic tires | |
US20200346496A1 (en) | Tread wear indicator | |
EP3523142B1 (en) | Tire with audible functionality | |
GB1262669A (en) | Improvements in and relating to solid and pneumatic tyres | |
US10406865B2 (en) | Repair boundary indicator for tires | |
US3438827A (en) | Method of manufacture of a tire | |
US1764076A (en) | Inner tube |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BTR INDUSTRIES LIMITED, STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DUNLOP HOLDINGS LIMITED;REEL/FRAME:009342/0856 Effective date: 19980522 |