CA2034750A1 - Tire protector - Google Patents
Tire protectorInfo
- Publication number
- CA2034750A1 CA2034750A1 CA002034750A CA2034750A CA2034750A1 CA 2034750 A1 CA2034750 A1 CA 2034750A1 CA 002034750 A CA002034750 A CA 002034750A CA 2034750 A CA2034750 A CA 2034750A CA 2034750 A1 CA2034750 A1 CA 2034750A1
- Authority
- CA
- Canada
- Prior art keywords
- tire
- protector
- protecting
- unitary
- supporting member
- 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.)
- Abandoned
Links
- 230000001012 protector Effects 0.000 title claims abstract description 73
- 239000000463 material Substances 0.000 claims abstract description 41
- 230000004888 barrier function Effects 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 239000011324 bead Substances 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract description 10
- 230000035939 shock Effects 0.000 description 12
- 229920001971 elastomer Polymers 0.000 description 6
- 239000005060 rubber Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 229920000271 Kevlar® Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004761 kevlar Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/12—Puncture preventing arrangements
- B60C19/125—Puncture preventing arrangements disposed removably on 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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/12—Puncture preventing arrangements
-
- 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
- B60C19/12—Puncture preventing arrangements
- B60C19/122—Puncture preventing arrangements disposed inside of the inner liner
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Ladders (AREA)
Abstract
CANADA Ki Won Song TIRE PROTECTOR A tire protector for preventing blowout of a tire for various vehicles in which a plurality of unitary protecting pieces having a plurality of protecting barriers are adhered by continuously arranging them along and across one side surface of a supporting member having liner form, and contained within tire so that blowouts of the tire from penetration of any sharp needle-like harmful material penetrating into tire can be avoided.
Description
2~3'~7~
BACKGROUND OF ~E IN~ENTION
The present invention relates to a tire protector which is contained within a vehicle tire so as to prevent the blowout of the tire.
More particularly, the tire protector of the present invention includes a plurality of unitary protecting pisces having a plurality of protecting barriers arranged continuously along and across a surface of a supporting member having the form of a liner for a tire. The tire protector may be contained within a tire of various sizes and forms and is made to completely prevent the blowing out of a tire resulting from the penetration of the tire by various needle-like harmful material such as nails. The tire protector is made to flex with the deformation of the tire during operation of a vehicle, so that it does not entirely deteriorate the stability and running performance including shock absorbing function of the tire.
As a result of continuous research and development which has been carried out since the air type tire was developed, tires of excellent capacity in all aspects are now utilized, and particularly tires of satisfactory life time, that is, durability, have been produced.
However, while the stability and durability of the tire have been improved, an effective device has not yet been provided, in spite oi research effort, for preventing the complete puncture of a tire. Thus the risk of human injury fro~ blow outs during vehicle operation remains.
A steel radial tire which has been widely used in recent years contains net type steel belt and the like within the tire casing itself for the purpose of 7 ~ ~
preventing punctures, but in such a steel radial tire, since the steel belt is integrally formed between the tread layer and carcass layer of the tire casing, not only doe~ this deteriorate the ride of the vehicle in operation, but the steel belt layer does not provide complete protection against penetration by metallic harmful material of sharp form such as a nail, especially where the sharp material penetrates from the side wall of the tire casing.
Therefore, recently a tire having the ability to prevent penetration by a bullet has been developed by reinforcing the tire with a strong new material such as kevlar fiber, but not only does this have no protecting ability against a sharp metallic harmful material such as a nail penetrating the tire during running of vehicle, but also is expensive to manufacture. Accordingly a kevlar reinforced tire cannot be used completely generally for vehicle tires, but has only restricted use.
On the other hand, a tire protecting device in which a band type protecting device is interposed between an inner tube and an outer casing of the tire so that the inner tube can be protected from harmful material penetrating into the interior of tire, is disclosed in U.S. patent No. 1,371,097 and 3,982,577.
However, since these tire protecting devices utilize a flexible band-like member of U-shaped section which is made by simply forming rubber, fiber or synthetic resin and the like as a single body, such a protecting device is easily pierced by a sharp object. Not only the inner tube cannot be sufficiently protected, but also it cannot be suitably used for a heavy load tire.
Also, in vehicle tube protectiny devices as described in U.S. patent Nos. 1,460,794; 1,474,387;
and 3,306,331, the protecting device is itself arranged between the tube and the tire casing, and is relatively thick so that it occupies a large volume.
Thus the amount of air with which the tube can be filled is relatively decreased so that the required elasticity and shock absorbing function of the tire cannot be appropriately maintained and there is a shortcoming in that the weiyht of the whole tire becomes heavier. As a result, such a tire can not be suitably employed for a re]atively light load tire such as that of a motorcycle, bicycle or small car.
In addition, a puncture preventing device for a tire tube in which a plurality of metal connecting pieces are sequentially connected and bent so as to accord with the outer diameter of the tube and having its exterior covered with sheet-like material is disclosed in Korean Utility model publication No. 82-1288. ~Iowever, when such a puncture preventing deviceis used in a vehicle tire, the assembling positions between metal connecting pieces are readily disassembled by any shock or vibration applied during running of the vehicle on which the tire is used and the connecting portion may be damaged and re-assembly of the separated connecting pieces may be difficult.
Also, when a strong shock from the exterior of the tire is applied, one end of the metal piece may be deformed whereby it may damage the tube at its interior side, and the flexibility of the mutually assembled connecting pieces is reduced across the tire, thereby the require~ shock absorbing ability and running performance as well as the elasticity of the tire may be remarkably decreased.
S~ ~ r~
SUN~ARY O~ THE INVENTIO~
Therefore, it is a primary object of the present invention to provide a tire protector which is designed to avoid various disadvantages and problems encountered in the above-described conventional tire or tire protecting devices.
Another object of the present invention is to 10 provide a tire protector which is widely applicable to various tires, irrespective of the kind, size or form of the tire, such as for various vehicle tires, either of the tubeless type or the tube type, as for example motorcycle or bicycle tires, and which is capable of 15 completely preventing the blowout of such tires from sharp metallic harmful material penetrating into the interior through the whole surface of the tire casing, that is, through the tread portion as well as the side wall portion.
Still other object of the present invention is to provide a t.ire protector which is contained within the tire and is made to be flex with the deformation of tire during the running of the vehicle, so that the shock absorbing ability or running performance of the 25 tire are not entirely decreased.
According to one aspect of a tire protector of the present invention, a plurality of unitary protecting pieces made of rigid synthetic resln having stepped triple protecting barriers and which is heat 30 resistant, cold resistant and strong such as plastic are adhered continuously along and across one surface of a supporting member such as textile fiber or rubber liner and the like made from such material which is heat resistant and cold resistant and which also can be flexibly deformed by contracting and expanding. The respecti~e unitary protecting pieces are independently supported on the supporting member.
Each unitary protecting piece arranged as above preferably has triple protecting barri~rs consisting of three rectangular plates having a predetermined dimension and disposed in overlapping relationship along the diagonal direction of the plates, and one side of each unitary protecting piece is preferably fixed by adhering to one side surface of said supporting member. The stepped protecting barriers of each unitary protecting pieces are arranged in overlapping relationship so as to engage the stepped protecting barriers of adjacent unitary protecting pieces. Thus each unitary protecting piece is separated from but abutting the adjacent pieces so as to be deformed independently from the other pieces, with the result that the resulting structure completely blocks penetration of the tire by sharp needle-like material despite the existence of a slight gap between each of the abutting unitary protecting pieces.
The tire protector according to the present invention can be widely employed in various vehicle tires such as tubeless tires or tube type tires, and also to motorcycle or bicycle tires. Sharp needle-like material penetrating through the gap between the interior of tire casing or each unitary protecting piece is blocked by the stepped triple protecting barriers of each unitary protecting piece so that the risk of the tire from penetration by various needle-like material into the interior of tire casing can be completely avoided. Since each unitary protecting piece can be independently flexibly deformed or restored UpO.71 the deformation of a tire during the running of a vehicle, the desired running performance of the tire can be maintained almost without affecting the shock absorbing ability or elasticity of the tire.
BRIE~ DES~IPTION OF THE DR~WIN~S
The above and other objects, features and advantages of the present invention can be understood in more detail from the following description with reference to the accompanying drawings by way of illustration, in which like numerals denote like elements, and in which:
Fig. 1 is a fragmentarily exploded perspective view showing partially the structure of a tire protector according to the present invention;
Fig. 2 is a longitudinal cross sectional view showing the tire protector according to the present invention;
Fig. 3 is a perspective view showing entire structure of the tire protector according to a preferred embodiment of the present invention;
Fig. ~ is a partially cut out perspective view showing a state that the tire protector according to the embodiment of Fig. 3, is applied to a tubeless tire;
Fig. 5 is a cross sectional view showing an application state and operation of the tire protector according to the embodiment of Fig. 3;
Fig. 6 is a cross sectional view showing another embodiment in which the tire protector of the present invention is applied to a tubeless tire;
Fig. 7 is a fragmentary perspective view partially showing the structure of the tire protector ~ J~ ~
according to stil.l another embodiment of the present invention;
Fig. 8 is a cross sectional view showing a state that the tire protector according to the embodiment of Fig. 7 is applied to a tube type tire;
and Fig. 9 is a cross sectional view showing further embodiment in which the tire protector according to the embodiment of Fig. 7 is applied to a tubeless tire.
DETAILED DESCRIPTION OF P~EFERRED EMBODIMENTS
Hereinafter, the tire protector of the preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.
Referring to Figs. 1 and 2, the tire protector P according to a preferred embodiment of the present invention comprises a plurality of unitary protecting pieces 10 manufactured so as to have a plurality of stepped protecting barriers 11, 12 and 13, by utilizing rigid and non-abrasive engineering plastic material such as nylon, and a supporting member 20 of heat resistant, cold resistant and non-abrasive material continuously along and across one side surface of which are adhered the unitary protecting pieces 10.
The unitary protecting piece 10 has protecting barriers, that is, first, second and third protecting barriers 11, 12 and 13, made from a plurality (shown as three in the drawing) of rectangular plate materials arranged in stepped overlapping relationship along the diagonal direction of each plate. One side surface of each unitary protecting piece 10, that is, 2 ~
exterior surface of the third protecting barrier 13, is fixed by adhering it to one side surface of said supporting member 20, 50 that the unitary protecting pieces are continuously arranged (abutting each other) lengthways (along, that is, circumferentially as will be seen in the drawings) and breadthways (across) and independently supported on the supporting member 20 and at the same time they are arranged in overlapping relationship so that the stepped protecting barriers 11, 12 and 13 of any one unitary protecting piece 10 are engaged with the stepped protecting barriers 11, 12 and 13 of the adjoining unitary protecting pieces 10 located at its front and rear and right and left.
Therefore, even if any set of such unitary protecting piece 10, arranged as described, is contacted by sharp needle-like harmful material penetrating through a slight gap formed between the adjoining unitary protecting pieces 10, the mutually engaged respective stepped protecting barriers 11, 12 and 13 block penetration of the protector by said needle-like harmful material.
The supporting member 20 is preferably made from a deformable material having the form of a liner or textile fabric cover, and is manufactured to be flexible by utilizing elastic rubber and the like reinforced by rubber or nylon or kevlar fiber and the like. The material and size as well as shape of the supporting member 20 may be chosen in accordance with the kind or size of the tire or portion of a tire to be protected.
According to the kire protector P of the present invention having such a configuration, since the respective unitary protecting pieces 10 are arranged continuously along and across and supported ~`0 3 ~
independently on the supporting member 20, when the tire protector P of the present invention is provided within the interior of a tire casiny, the whole of said protector P can be flexibly deformed. If any shock or external force is applied to the tire provided with such a tire protector P, since the shock transferred to the tire protector P is limited only to a few localized unitary protecting pieces, the shock absorbing function and elasticity peculiar to the tire are maintained sufficiently without deteriorating the elasticity of the tire itself. Thus deterioration of the running performance and the riding feeling of the tire during operation of the vehicle can be avoided.
Hereinafter, practical examples of the tire protector of the present invention and its operational effect will be described with reference to particular kinds of tire.
Fig. 3 and Fig. 4 are respectively a perspective view of a tire protector which is structured in the form that the tire protector according to a preferred embodiment of the present invention can protect the whole surface of a tubeless tire and a partly cut out fragmentary perspective view for showing the application of said tire protector.
The tire protector Pl according to this embodiment is arranged to cover the whole of the external surface of an inner liner type rubber supportiny member 21 having respective unitary protecting pieces 10 arranged over the whole of the internal circumferential surface of the tire casing 31 for the tubeless tire 30.
The tire protector P1 is fixed within the tire casing 31 by adhering the parts of the adhering portions 21a of the supporting member 21 that are not ~ ~ 3 ~
-- 10 ~
covered with unitary protecting pieces 10 to the side bead portion 31b formed at the edge of side wall 31a of the tire casing 31. In this manner, the external circumferential surface of the tire protector Pl that is covered by protecting pieces 10 is separated from the internal circumferential surface of the tire casing 31, as shown in Fig. 5.
When the tire protector Pl of the present invention is applied to a tubeless tire 30, the tire protector Pl is extremely light and thin and the volume that the tire protector Pl occupies as compared with the volume of the entirety of the tire interior is no more than 2 - 3%. This results from the use and design of the small sized unitary protecting pieces 10, which are made from a rigid synthetic resin which is suitably tough and non-elastic such as nylon. The unitary protecting pieces 10 are supported respectively and independently on the supporting member 21, which itself has the function and material as well as form of a normal inner liner. The stepped protecting barriers 11, 12 and 13 which make up respective separating type unitary protecting pieces 10 are arranged in overlapping relationship. Use of this structure maintains the elasticity and shock absorbing capacity of the tire and since the unitary protecting pieces 10 are flexibly deformable in relation to each other by contracting and expanding with the deformation of the tire, the ground contact force of the tire is unaffected, and the riding feeling during running and braking capacity upon brake operation are not deteriorated. At the same time resistance during runniny is not induced, and damage of the tire casing 31 from the direct contact of tire 2 ~ 3 ~
casing 31 with the respective unitary protectiny pieces 10 can be avoided.
In the tire protector Pl of the present invention as above, since said respective unitary protecting pieces 10 are arranged over the whole of the internal circumferential surface of tire casing 31, that is, over the tread portion 31c of tire casing 31 and both side wall portions 31a, when a sharp needle-like harmful material such as a nail is stuck to the grounding portion or the side wall portion of the tire during the operation of a vehicle, as shown in Fig. 5, the front tire end portion of the needle-like harmful material H penetrates into the interior through the tread portion 31c or side wall portion 31a of tire casing 31 and contacts the Pxternal surface of unitary protecting pieces 10 of the tire protector P1, that is, the first protecting barrier 11 of the unitary protecting piece 10 that is directly contacted by the harmful material H. A few unitary protecting pieces 10 adjoining the contacted unitary protecting piece 10 only are pushed toward the inside of the tire and said unitary protecting piece 10 is not directly pierced. Thus blow-out of the tire from penetration by various needle-like harmful material H into the interior of tire casing 31 irrespective of where the harmful material H penetrates the tire can be avoided.
And, even when the front tip end portion of the harmful material H penetrates throuyh a gap between respective unitary protecting pieces 10, since the second and third protecting barriers 12 and 13 of the respective unitary protecting piece 10 are arranged in overlapping relationship, thus being mutually engaged, at the inner side of said gap, penetration of the harmful material H through the gap between respective 2 ~
unitary protecting pieces 10 can also be completely blocked. When such a sharp metallic harmful material H is removed, the deformed portion of the tire protector P1 is immediately restored to its original position by air pressure from the interior of the protector P1.
In the above embodiment, although it is shown and explained that the tire protector P1 of the present invention used in the tubeless tire 30 protects the tire from harmful material H penetrating through the tread portion 31c and side wall portion 31a of said tire casing 31, in embodying the present invention, the respective unitary protecting pieces 10 may be arranged only on the middle portion of the external surface of the inner liner type supporting member 21 according to the embodiment shown in Fig. 6, so that the blow-out of the tire can be prevented only when the harmful material H penetrates through the tread portion 31c of tire casing 31.
Fig. 7 is a partially cut out fragmentary perspective view of an embodiment of the invention for use with a tube type tire, and Fig. 8 shows an embodiment that the tire protector as applied to a tube type tire. As with the protector P shown in Fig.
1, the tire protector P2 is formed by having the external surfaces of respective unitary protecting pieces 10 arranged and adhered integrally on the side surface of the supporting member 20, and in this embodiment are covered by cover 22 made from rubber or textile fabric material, as with its supporting member 20 and thereby it is constructed as a separate article independent of a tire casing 41.
Therefore, in applying the tire protector constructed in this manner to a tube type tire 40, said tire protector P2 is inserted into the interior of tire casing 41 separated from an inner tube 50, and the axternal surface of the cover 22 of tire protector P2 is fixed by adhering on ths internal circumferential surface of the tire casing 41 so as to make said tire protector P2 to be arranged over the whole of the internal circumferential surface of the tire casing 41. Inner tube 50 is inserted in the tire on the inner side of said tire protector P2 and then compressed air is blown in to the inner tube and the tire with inner tube 50 thus expanded and device P2 becomes as shown in Fig. 8, with accompanying operation and effect similar to the case of the tubeless tire shown in Fig. 5.
That is, according to the tire protector P2 provided as in the above description, when needle-like harmful material H penetrates into the interior of the tire casing 41 from the tread portion 41c or the side wall portion 41a of the tire casing 41, since the unitary protecting piece 10 portion of the tire protector contacted by the material H is pushed inwardly to deform the inner tube 50, penetration of the inner tube 50 by the needle-like harmful material H can be avoided. When said harmful material H is removed from the tire, the compressed and deformed portion is pushed out toward the outside of the tire protector by the elasticity of the inner tube 50 by which the structure becomes rapidly restored to the state before deformation.
Fig. 9 shows another embodiment of the tire protector P2 for use with a tube type tire which is arranged for the purpose of protecting the tire from harmful material H penetrating through the tread portion 41c of said tire casing 41, with similar ; rl r~
~ 14 -oparation and effect to the tire protector for a tubeless tire shown in Fig. 6.
In the above embodiment, although it is shown and explained as examples that the tire protector P
according to the present invention may be applied to a tubeless tire 30 or a tube type tire ~0 for vehicle, the tire protector of the present invention may be used with tires of various siæes and kinds such as tires for motorcycle or bicycle and the like.
According to the present invention as described above, a tire protector is provided for the interior of various tires to prevent the blow-out of the tire from harmful material penetrating into the interior of its tire casing. The tire protector is constructed with a plurality of synthetic resin made unitary protecting pieces having stepped protecting barriers adhered continuously in overlapping relationship on one side of a flexible supporting member. The respective unitary protecting pieces are arranged along and across and are independently supported on the supporting member, so that the respective unitary protecting pieces are made to be able to be deformed flexibly by shock or external force applied to said tire protector. At the same time the stepped protecting barriers of respective unitary protecting pieces are made to overlap each other and mutually engage with the stepped protecting barriers of adjoining unitary protecting pieces. Thus the unitary protecting pieces thus arranged completely block sharp needle-like harmful material penetrating through the gap between the respective unitary protectiny pieces.
Skilled persons in the art would appreciate that the above description is of preferred embodiments 7 ~ ~
and that immaterial modifications could be made to what is described here without departing from the essence of the invention.
BACKGROUND OF ~E IN~ENTION
The present invention relates to a tire protector which is contained within a vehicle tire so as to prevent the blowout of the tire.
More particularly, the tire protector of the present invention includes a plurality of unitary protecting pisces having a plurality of protecting barriers arranged continuously along and across a surface of a supporting member having the form of a liner for a tire. The tire protector may be contained within a tire of various sizes and forms and is made to completely prevent the blowing out of a tire resulting from the penetration of the tire by various needle-like harmful material such as nails. The tire protector is made to flex with the deformation of the tire during operation of a vehicle, so that it does not entirely deteriorate the stability and running performance including shock absorbing function of the tire.
As a result of continuous research and development which has been carried out since the air type tire was developed, tires of excellent capacity in all aspects are now utilized, and particularly tires of satisfactory life time, that is, durability, have been produced.
However, while the stability and durability of the tire have been improved, an effective device has not yet been provided, in spite oi research effort, for preventing the complete puncture of a tire. Thus the risk of human injury fro~ blow outs during vehicle operation remains.
A steel radial tire which has been widely used in recent years contains net type steel belt and the like within the tire casing itself for the purpose of 7 ~ ~
preventing punctures, but in such a steel radial tire, since the steel belt is integrally formed between the tread layer and carcass layer of the tire casing, not only doe~ this deteriorate the ride of the vehicle in operation, but the steel belt layer does not provide complete protection against penetration by metallic harmful material of sharp form such as a nail, especially where the sharp material penetrates from the side wall of the tire casing.
Therefore, recently a tire having the ability to prevent penetration by a bullet has been developed by reinforcing the tire with a strong new material such as kevlar fiber, but not only does this have no protecting ability against a sharp metallic harmful material such as a nail penetrating the tire during running of vehicle, but also is expensive to manufacture. Accordingly a kevlar reinforced tire cannot be used completely generally for vehicle tires, but has only restricted use.
On the other hand, a tire protecting device in which a band type protecting device is interposed between an inner tube and an outer casing of the tire so that the inner tube can be protected from harmful material penetrating into the interior of tire, is disclosed in U.S. patent No. 1,371,097 and 3,982,577.
However, since these tire protecting devices utilize a flexible band-like member of U-shaped section which is made by simply forming rubber, fiber or synthetic resin and the like as a single body, such a protecting device is easily pierced by a sharp object. Not only the inner tube cannot be sufficiently protected, but also it cannot be suitably used for a heavy load tire.
Also, in vehicle tube protectiny devices as described in U.S. patent Nos. 1,460,794; 1,474,387;
and 3,306,331, the protecting device is itself arranged between the tube and the tire casing, and is relatively thick so that it occupies a large volume.
Thus the amount of air with which the tube can be filled is relatively decreased so that the required elasticity and shock absorbing function of the tire cannot be appropriately maintained and there is a shortcoming in that the weiyht of the whole tire becomes heavier. As a result, such a tire can not be suitably employed for a re]atively light load tire such as that of a motorcycle, bicycle or small car.
In addition, a puncture preventing device for a tire tube in which a plurality of metal connecting pieces are sequentially connected and bent so as to accord with the outer diameter of the tube and having its exterior covered with sheet-like material is disclosed in Korean Utility model publication No. 82-1288. ~Iowever, when such a puncture preventing deviceis used in a vehicle tire, the assembling positions between metal connecting pieces are readily disassembled by any shock or vibration applied during running of the vehicle on which the tire is used and the connecting portion may be damaged and re-assembly of the separated connecting pieces may be difficult.
Also, when a strong shock from the exterior of the tire is applied, one end of the metal piece may be deformed whereby it may damage the tube at its interior side, and the flexibility of the mutually assembled connecting pieces is reduced across the tire, thereby the require~ shock absorbing ability and running performance as well as the elasticity of the tire may be remarkably decreased.
S~ ~ r~
SUN~ARY O~ THE INVENTIO~
Therefore, it is a primary object of the present invention to provide a tire protector which is designed to avoid various disadvantages and problems encountered in the above-described conventional tire or tire protecting devices.
Another object of the present invention is to 10 provide a tire protector which is widely applicable to various tires, irrespective of the kind, size or form of the tire, such as for various vehicle tires, either of the tubeless type or the tube type, as for example motorcycle or bicycle tires, and which is capable of 15 completely preventing the blowout of such tires from sharp metallic harmful material penetrating into the interior through the whole surface of the tire casing, that is, through the tread portion as well as the side wall portion.
Still other object of the present invention is to provide a t.ire protector which is contained within the tire and is made to be flex with the deformation of tire during the running of the vehicle, so that the shock absorbing ability or running performance of the 25 tire are not entirely decreased.
According to one aspect of a tire protector of the present invention, a plurality of unitary protecting pieces made of rigid synthetic resln having stepped triple protecting barriers and which is heat 30 resistant, cold resistant and strong such as plastic are adhered continuously along and across one surface of a supporting member such as textile fiber or rubber liner and the like made from such material which is heat resistant and cold resistant and which also can be flexibly deformed by contracting and expanding. The respecti~e unitary protecting pieces are independently supported on the supporting member.
Each unitary protecting piece arranged as above preferably has triple protecting barri~rs consisting of three rectangular plates having a predetermined dimension and disposed in overlapping relationship along the diagonal direction of the plates, and one side of each unitary protecting piece is preferably fixed by adhering to one side surface of said supporting member. The stepped protecting barriers of each unitary protecting pieces are arranged in overlapping relationship so as to engage the stepped protecting barriers of adjacent unitary protecting pieces. Thus each unitary protecting piece is separated from but abutting the adjacent pieces so as to be deformed independently from the other pieces, with the result that the resulting structure completely blocks penetration of the tire by sharp needle-like material despite the existence of a slight gap between each of the abutting unitary protecting pieces.
The tire protector according to the present invention can be widely employed in various vehicle tires such as tubeless tires or tube type tires, and also to motorcycle or bicycle tires. Sharp needle-like material penetrating through the gap between the interior of tire casing or each unitary protecting piece is blocked by the stepped triple protecting barriers of each unitary protecting piece so that the risk of the tire from penetration by various needle-like material into the interior of tire casing can be completely avoided. Since each unitary protecting piece can be independently flexibly deformed or restored UpO.71 the deformation of a tire during the running of a vehicle, the desired running performance of the tire can be maintained almost without affecting the shock absorbing ability or elasticity of the tire.
BRIE~ DES~IPTION OF THE DR~WIN~S
The above and other objects, features and advantages of the present invention can be understood in more detail from the following description with reference to the accompanying drawings by way of illustration, in which like numerals denote like elements, and in which:
Fig. 1 is a fragmentarily exploded perspective view showing partially the structure of a tire protector according to the present invention;
Fig. 2 is a longitudinal cross sectional view showing the tire protector according to the present invention;
Fig. 3 is a perspective view showing entire structure of the tire protector according to a preferred embodiment of the present invention;
Fig. ~ is a partially cut out perspective view showing a state that the tire protector according to the embodiment of Fig. 3, is applied to a tubeless tire;
Fig. 5 is a cross sectional view showing an application state and operation of the tire protector according to the embodiment of Fig. 3;
Fig. 6 is a cross sectional view showing another embodiment in which the tire protector of the present invention is applied to a tubeless tire;
Fig. 7 is a fragmentary perspective view partially showing the structure of the tire protector ~ J~ ~
according to stil.l another embodiment of the present invention;
Fig. 8 is a cross sectional view showing a state that the tire protector according to the embodiment of Fig. 7 is applied to a tube type tire;
and Fig. 9 is a cross sectional view showing further embodiment in which the tire protector according to the embodiment of Fig. 7 is applied to a tubeless tire.
DETAILED DESCRIPTION OF P~EFERRED EMBODIMENTS
Hereinafter, the tire protector of the preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.
Referring to Figs. 1 and 2, the tire protector P according to a preferred embodiment of the present invention comprises a plurality of unitary protecting pieces 10 manufactured so as to have a plurality of stepped protecting barriers 11, 12 and 13, by utilizing rigid and non-abrasive engineering plastic material such as nylon, and a supporting member 20 of heat resistant, cold resistant and non-abrasive material continuously along and across one side surface of which are adhered the unitary protecting pieces 10.
The unitary protecting piece 10 has protecting barriers, that is, first, second and third protecting barriers 11, 12 and 13, made from a plurality (shown as three in the drawing) of rectangular plate materials arranged in stepped overlapping relationship along the diagonal direction of each plate. One side surface of each unitary protecting piece 10, that is, 2 ~
exterior surface of the third protecting barrier 13, is fixed by adhering it to one side surface of said supporting member 20, 50 that the unitary protecting pieces are continuously arranged (abutting each other) lengthways (along, that is, circumferentially as will be seen in the drawings) and breadthways (across) and independently supported on the supporting member 20 and at the same time they are arranged in overlapping relationship so that the stepped protecting barriers 11, 12 and 13 of any one unitary protecting piece 10 are engaged with the stepped protecting barriers 11, 12 and 13 of the adjoining unitary protecting pieces 10 located at its front and rear and right and left.
Therefore, even if any set of such unitary protecting piece 10, arranged as described, is contacted by sharp needle-like harmful material penetrating through a slight gap formed between the adjoining unitary protecting pieces 10, the mutually engaged respective stepped protecting barriers 11, 12 and 13 block penetration of the protector by said needle-like harmful material.
The supporting member 20 is preferably made from a deformable material having the form of a liner or textile fabric cover, and is manufactured to be flexible by utilizing elastic rubber and the like reinforced by rubber or nylon or kevlar fiber and the like. The material and size as well as shape of the supporting member 20 may be chosen in accordance with the kind or size of the tire or portion of a tire to be protected.
According to the kire protector P of the present invention having such a configuration, since the respective unitary protecting pieces 10 are arranged continuously along and across and supported ~`0 3 ~
independently on the supporting member 20, when the tire protector P of the present invention is provided within the interior of a tire casiny, the whole of said protector P can be flexibly deformed. If any shock or external force is applied to the tire provided with such a tire protector P, since the shock transferred to the tire protector P is limited only to a few localized unitary protecting pieces, the shock absorbing function and elasticity peculiar to the tire are maintained sufficiently without deteriorating the elasticity of the tire itself. Thus deterioration of the running performance and the riding feeling of the tire during operation of the vehicle can be avoided.
Hereinafter, practical examples of the tire protector of the present invention and its operational effect will be described with reference to particular kinds of tire.
Fig. 3 and Fig. 4 are respectively a perspective view of a tire protector which is structured in the form that the tire protector according to a preferred embodiment of the present invention can protect the whole surface of a tubeless tire and a partly cut out fragmentary perspective view for showing the application of said tire protector.
The tire protector Pl according to this embodiment is arranged to cover the whole of the external surface of an inner liner type rubber supportiny member 21 having respective unitary protecting pieces 10 arranged over the whole of the internal circumferential surface of the tire casing 31 for the tubeless tire 30.
The tire protector P1 is fixed within the tire casing 31 by adhering the parts of the adhering portions 21a of the supporting member 21 that are not ~ ~ 3 ~
-- 10 ~
covered with unitary protecting pieces 10 to the side bead portion 31b formed at the edge of side wall 31a of the tire casing 31. In this manner, the external circumferential surface of the tire protector Pl that is covered by protecting pieces 10 is separated from the internal circumferential surface of the tire casing 31, as shown in Fig. 5.
When the tire protector Pl of the present invention is applied to a tubeless tire 30, the tire protector Pl is extremely light and thin and the volume that the tire protector Pl occupies as compared with the volume of the entirety of the tire interior is no more than 2 - 3%. This results from the use and design of the small sized unitary protecting pieces 10, which are made from a rigid synthetic resin which is suitably tough and non-elastic such as nylon. The unitary protecting pieces 10 are supported respectively and independently on the supporting member 21, which itself has the function and material as well as form of a normal inner liner. The stepped protecting barriers 11, 12 and 13 which make up respective separating type unitary protecting pieces 10 are arranged in overlapping relationship. Use of this structure maintains the elasticity and shock absorbing capacity of the tire and since the unitary protecting pieces 10 are flexibly deformable in relation to each other by contracting and expanding with the deformation of the tire, the ground contact force of the tire is unaffected, and the riding feeling during running and braking capacity upon brake operation are not deteriorated. At the same time resistance during runniny is not induced, and damage of the tire casing 31 from the direct contact of tire 2 ~ 3 ~
casing 31 with the respective unitary protectiny pieces 10 can be avoided.
In the tire protector Pl of the present invention as above, since said respective unitary protecting pieces 10 are arranged over the whole of the internal circumferential surface of tire casing 31, that is, over the tread portion 31c of tire casing 31 and both side wall portions 31a, when a sharp needle-like harmful material such as a nail is stuck to the grounding portion or the side wall portion of the tire during the operation of a vehicle, as shown in Fig. 5, the front tire end portion of the needle-like harmful material H penetrates into the interior through the tread portion 31c or side wall portion 31a of tire casing 31 and contacts the Pxternal surface of unitary protecting pieces 10 of the tire protector P1, that is, the first protecting barrier 11 of the unitary protecting piece 10 that is directly contacted by the harmful material H. A few unitary protecting pieces 10 adjoining the contacted unitary protecting piece 10 only are pushed toward the inside of the tire and said unitary protecting piece 10 is not directly pierced. Thus blow-out of the tire from penetration by various needle-like harmful material H into the interior of tire casing 31 irrespective of where the harmful material H penetrates the tire can be avoided.
And, even when the front tip end portion of the harmful material H penetrates throuyh a gap between respective unitary protecting pieces 10, since the second and third protecting barriers 12 and 13 of the respective unitary protecting piece 10 are arranged in overlapping relationship, thus being mutually engaged, at the inner side of said gap, penetration of the harmful material H through the gap between respective 2 ~
unitary protecting pieces 10 can also be completely blocked. When such a sharp metallic harmful material H is removed, the deformed portion of the tire protector P1 is immediately restored to its original position by air pressure from the interior of the protector P1.
In the above embodiment, although it is shown and explained that the tire protector P1 of the present invention used in the tubeless tire 30 protects the tire from harmful material H penetrating through the tread portion 31c and side wall portion 31a of said tire casing 31, in embodying the present invention, the respective unitary protecting pieces 10 may be arranged only on the middle portion of the external surface of the inner liner type supporting member 21 according to the embodiment shown in Fig. 6, so that the blow-out of the tire can be prevented only when the harmful material H penetrates through the tread portion 31c of tire casing 31.
Fig. 7 is a partially cut out fragmentary perspective view of an embodiment of the invention for use with a tube type tire, and Fig. 8 shows an embodiment that the tire protector as applied to a tube type tire. As with the protector P shown in Fig.
1, the tire protector P2 is formed by having the external surfaces of respective unitary protecting pieces 10 arranged and adhered integrally on the side surface of the supporting member 20, and in this embodiment are covered by cover 22 made from rubber or textile fabric material, as with its supporting member 20 and thereby it is constructed as a separate article independent of a tire casing 41.
Therefore, in applying the tire protector constructed in this manner to a tube type tire 40, said tire protector P2 is inserted into the interior of tire casing 41 separated from an inner tube 50, and the axternal surface of the cover 22 of tire protector P2 is fixed by adhering on ths internal circumferential surface of the tire casing 41 so as to make said tire protector P2 to be arranged over the whole of the internal circumferential surface of the tire casing 41. Inner tube 50 is inserted in the tire on the inner side of said tire protector P2 and then compressed air is blown in to the inner tube and the tire with inner tube 50 thus expanded and device P2 becomes as shown in Fig. 8, with accompanying operation and effect similar to the case of the tubeless tire shown in Fig. 5.
That is, according to the tire protector P2 provided as in the above description, when needle-like harmful material H penetrates into the interior of the tire casing 41 from the tread portion 41c or the side wall portion 41a of the tire casing 41, since the unitary protecting piece 10 portion of the tire protector contacted by the material H is pushed inwardly to deform the inner tube 50, penetration of the inner tube 50 by the needle-like harmful material H can be avoided. When said harmful material H is removed from the tire, the compressed and deformed portion is pushed out toward the outside of the tire protector by the elasticity of the inner tube 50 by which the structure becomes rapidly restored to the state before deformation.
Fig. 9 shows another embodiment of the tire protector P2 for use with a tube type tire which is arranged for the purpose of protecting the tire from harmful material H penetrating through the tread portion 41c of said tire casing 41, with similar ; rl r~
~ 14 -oparation and effect to the tire protector for a tubeless tire shown in Fig. 6.
In the above embodiment, although it is shown and explained as examples that the tire protector P
according to the present invention may be applied to a tubeless tire 30 or a tube type tire ~0 for vehicle, the tire protector of the present invention may be used with tires of various siæes and kinds such as tires for motorcycle or bicycle and the like.
According to the present invention as described above, a tire protector is provided for the interior of various tires to prevent the blow-out of the tire from harmful material penetrating into the interior of its tire casing. The tire protector is constructed with a plurality of synthetic resin made unitary protecting pieces having stepped protecting barriers adhered continuously in overlapping relationship on one side of a flexible supporting member. The respective unitary protecting pieces are arranged along and across and are independently supported on the supporting member, so that the respective unitary protecting pieces are made to be able to be deformed flexibly by shock or external force applied to said tire protector. At the same time the stepped protecting barriers of respective unitary protecting pieces are made to overlap each other and mutually engage with the stepped protecting barriers of adjoining unitary protecting pieces. Thus the unitary protecting pieces thus arranged completely block sharp needle-like harmful material penetrating through the gap between the respective unitary protectiny pieces.
Skilled persons in the art would appreciate that the above description is of preferred embodiments 7 ~ ~
and that immaterial modifications could be made to what is described here without departing from the essence of the invention.
Claims (6)
1. A tire protector comprising:
a plurality of rigid unitary protecting pieces having a plurality of stepped protecting barriers; and a supporting member made from flexible material on one side surface of which said unitary protecting pieces are adhered independently and continuously along and across the one side surface, with the stepped protecting barriers overlapping each other everywhere on the one side surface.
a plurality of rigid unitary protecting pieces having a plurality of stepped protecting barriers; and a supporting member made from flexible material on one side surface of which said unitary protecting pieces are adhered independently and continuously along and across the one side surface, with the stepped protecting barriers overlapping each other everywhere on the one side surface.
2. The tire protector as claimed in claim 1, wherein the protector has a form suitable for a tubeless tire and said supporting member has an inner liner form capable of covering the whole of the internal circumferential surface of tire casing of the tubeless tire and has adhering portions adhered to inner sides of bead portions of tire casing at both end circumferential edge portions, and said unitary protecting pieces are arranged over the whole of the external circumferential surface except adhering portions of said supporting member so as to prevent blow-out through the tread portion and both side wall portions of the tire casing.
3. The tire protector as claimed in claim 1, wherein the protector has a form suitable for a tubeless tire and said supporting member has an inner liner form capable of covering the whole of the internal circumferential surface of the tire casing of the tubeless tire and has adhering portions adhered to inner sides of the tread portion of the tire casing at both end circumferential edge portions, and said unitary protecting pieces are arranged in the middle portion of external circumferential surface of said supporting member so as to prevent blow-out through the tread portion of the tire casing.
4. The tire protector as claimed in claim 1, wherein the protector has a form suitable for a tube type tire in which said supporting member has a cover to be adhered to an internal circumferential surface of the tire casing of the tube type tire, and the respective unitary protecting pieces are adhered on the supporting member and structured so as to be surrounded by said supporting member and cover, for insertion between an inner tube and a tire casing of the tube type tire.
5. The tire protector as claimed in claim 4, wherein the protector has a form suitable for a tube type tire and said respective unitary protecting pieces are adhered on the supporting member to cover the whole internal circumferential surface of the tire casing, thereby the inner tube can be protected from harmful material penetrating through tread portion and both side wall portions of tire casing.
6. The tire protector as claimed in claim 4, wherein the protector has a form suitable for a tube type tire and said respective unitary protecting pieces are adhered on the supporting member to cover the middle portion of the internal circumferential surface of the tire casing, thereby the inner tube can be protected from harmful material penetrating through tread portion of tire casing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900000702A KR910014246A (en) | 1990-01-22 | 1990-01-22 | Tire puncture protector |
| KR702/1990 | 1990-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2034750A1 true CA2034750A1 (en) | 1991-07-23 |
Family
ID=19295448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002034750A Abandoned CA2034750A1 (en) | 1990-01-22 | 1991-01-22 | Tire protector |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPH04212607A (en) |
| KR (1) | KR910014246A (en) |
| CN (1) | CN1053585A (en) |
| AU (1) | AU6947491A (en) |
| BR (1) | BR9100263A (en) |
| CA (1) | CA2034750A1 (en) |
| CS (1) | CS13391A2 (en) |
| DE (1) | DE4101774A1 (en) |
| ES (1) | ES2027888A6 (en) |
| FR (1) | FR2657300A1 (en) |
| GB (1) | GB2240953A (en) |
| GR (1) | GR1000926B (en) |
| IT (1) | IT1246280B (en) |
| PE (1) | PE30391A1 (en) |
| PL (1) | PL288801A1 (en) |
| SE (1) | SE9100173L (en) |
| ZA (1) | ZA91405B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2357474A (en) * | 1999-12-24 | 2001-06-27 | Shut Chen Hsu | Vehicle inner tube having multiple air cells and breakers |
| ES2174696B1 (en) * | 2000-01-27 | 2004-09-16 | Hsu Shut Chen | AIR CAMERA FOR VEHICLES WITH MULTIPLE AIR CELLS AND BANDS. |
| JP3381065B2 (en) * | 2000-01-27 | 2003-02-24 | 本田技研工業株式会社 | Tubeless tire |
| US20020040750A1 (en) * | 2000-10-07 | 2002-04-11 | Hsu Shut Chen | Vehicle tire with breaker and anti-knock arrangement |
| JP2002283817A (en) | 2001-03-27 | 2002-10-03 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| FR2879504A1 (en) * | 2004-12-21 | 2006-06-23 | Eric Benamo | Vehicle tyre anti-puncture system comprises liner of synthetic resin or recycled tyre material |
| DE102006010440A1 (en) * | 2006-03-03 | 2007-09-06 | Schäfer, Hubertus | Tire protection system for e.g. car, has set of hollow chambers, which are gas impermeable and contain air or gas, where system is made of foam material, is flexible and has form of flat band, which completely encompasses tire in interior |
| DE102006016690A1 (en) * | 2006-04-08 | 2007-10-11 | Continental Aktiengesellschaft | Pneumatic vehicle tire with a puncture-preventing insert |
| FR2892056B1 (en) | 2006-05-30 | 2010-11-26 | Robert Boulain | SOFT ENCLOSURE ANTIPERFORATION |
| CN105398290B (en) * | 2014-09-09 | 2018-05-01 | 姚舜 | A kind of anti-tie airtight tire |
| DE102015009432A1 (en) * | 2015-07-21 | 2017-01-26 | Bundesrepublik Deutschland, vertreten durch das Bundesministerium der Verteidigung, dieses vertreten durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr | safety bicycle |
| JPWO2019111974A1 (en) * | 2017-12-07 | 2020-11-26 | 株式会社ブリヂストン | Pneumatic tires |
| WO2019111972A1 (en) | 2017-12-07 | 2019-06-13 | 株式会社ブリヂストン | Pneumatic tire |
| JPWO2020111112A1 (en) * | 2018-11-30 | 2021-11-11 | 株式会社ブリヂストン | Pneumatic tires |
| ES2895199A1 (en) * | 2020-08-16 | 2022-02-17 | Advantaria Sl | Pneumatic wheel with alternate radial elements and increased security (Machine-translation by Google Translate, not legally binding) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB281501A (en) * | 1927-05-11 | 1927-12-08 | John Brown | Tyre puncture preventer |
| BE376460A (en) * | 1930-01-16 | |||
| CH134261A (en) * | 1931-06-11 | 1929-07-15 | Stadelmann Robert | Device for protection against the penetration of nails and the like into the tubes of pneumatic tires for vehicle wheels. |
| DE807483C (en) * | 1949-01-29 | 1951-06-28 | Oscar Krische | Protection device for pneumatic tires of vehicles |
| US3443618A (en) * | 1967-01-24 | 1969-05-13 | Amos M Kelley | Puncture-proof tire liner |
| US3640329A (en) * | 1970-06-12 | 1972-02-08 | Alex Chien | Anti-flat tire device |
| JPS47644U (en) * | 1971-01-19 | 1972-08-04 | ||
| GB1479442A (en) * | 1974-06-13 | 1977-07-13 | Hinderks M V | Tyre deflation warning device |
-
1990
- 1990-01-22 KR KR1019900000702A patent/KR910014246A/en not_active Withdrawn
- 1990-09-17 CN CN90107902A patent/CN1053585A/en active Pending
-
1991
- 1991-01-17 GB GB9101051A patent/GB2240953A/en not_active Withdrawn
- 1991-01-18 AU AU69474/91A patent/AU6947491A/en not_active Abandoned
- 1991-01-21 SE SE9100173A patent/SE9100173L/en not_active Application Discontinuation
- 1991-01-21 IT ITMI910125A patent/IT1246280B/en active IP Right Grant
- 1991-01-21 ES ES9100149A patent/ES2027888A6/en not_active Expired - Fee Related
- 1991-01-21 ZA ZA91405A patent/ZA91405B/en unknown
- 1991-01-22 PL PL28880191A patent/PL288801A1/en unknown
- 1991-01-22 GR GR910100031A patent/GR1000926B/en unknown
- 1991-01-22 DE DE4101774A patent/DE4101774A1/en not_active Withdrawn
- 1991-01-22 FR FR9100700A patent/FR2657300A1/en not_active Withdrawn
- 1991-01-22 BR BR919100263A patent/BR9100263A/en not_active Application Discontinuation
- 1991-01-22 CA CA002034750A patent/CA2034750A1/en not_active Abandoned
- 1991-01-22 PE PE1991180585A patent/PE30391A1/en unknown
- 1991-01-22 CS CS91133A patent/CS13391A2/en unknown
- 1991-01-22 JP JP3021658A patent/JPH04212607A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI910125A0 (en) | 1991-01-21 |
| BR9100263A (en) | 1991-10-22 |
| ZA91405B (en) | 1991-11-27 |
| KR910014246A (en) | 1991-08-31 |
| CN1053585A (en) | 1991-08-07 |
| GB2240953A (en) | 1991-08-21 |
| SE9100173D0 (en) | 1991-01-21 |
| GR910100031A (en) | 1992-06-25 |
| GR1000926B (en) | 1993-03-16 |
| CS13391A2 (en) | 1991-09-15 |
| ITMI910125A1 (en) | 1992-07-21 |
| FR2657300A1 (en) | 1991-07-26 |
| PE30391A1 (en) | 1991-11-27 |
| PL288801A1 (en) | 1991-10-07 |
| DE4101774A1 (en) | 1991-07-25 |
| JPH04212607A (en) | 1992-08-04 |
| GB9101051D0 (en) | 1991-02-27 |
| AU6947491A (en) | 1991-07-25 |
| ES2027888A6 (en) | 1992-06-16 |
| IT1246280B (en) | 1994-11-17 |
| SE9100173L (en) | 1991-07-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |