CA1069809A - Method and an apparatus for injecting air into a spare pneumatic tire - Google Patents
Method and an apparatus for injecting air into a spare pneumatic tireInfo
- Publication number
- CA1069809A CA1069809A CA283,899A CA283899A CA1069809A CA 1069809 A CA1069809 A CA 1069809A CA 283899 A CA283899 A CA 283899A CA 1069809 A CA1069809 A CA 1069809A
- Authority
- CA
- Canada
- Prior art keywords
- tire
- air
- spare tire
- tires
- pipe members
- 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
Links
- 238000000034 method Methods 0.000 title abstract description 9
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 206010026749 Mania Diseases 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Tires In General (AREA)
Abstract
Abstract of the Disclosure A method and an apparatus for injecting air into a spare pneumatic tire fitted with a rim, which comprises injecting air into said spare tire concurrently from all remaining non-punctured tires fitted in an automobile or in turn from one of the remaining tires.
Description
~6~3~ 9 The present inven*ion relates to a method ~or injecting air into a pneumatic tire for an automobile, particularly into a foldable pneumatic tire to be used as a spare tire o~ an automobile and an apparatus therefor.
Nhen the foldable tire is housed in a spare house when not using, air has been discharged, so that the outer diameter and the breadth of the tire are very smaller than the size when the tire is used, that is air is injected.
A typical tire is one as shown in Fig. 1, which is fitted with a rim and folded in the diameteT direction o-f the tire `~
and this tire is expanded in the diameter direction as shown in the dot-dash line and is used. In addition, there are ones having the forms as shown in Figs. 2 and 3 and the tire shown in Fig. 2 is folded in the cross-sectional direction of the tire and the tire in Fig. 3 is folded in the outside of the rim at the bead portion and in both cases, the tires are expanded in the diameter direction by injecting air and then are used.
These tires have been fairly broadly used in United States of Ameri.ca and Europe and this is because the trunk room must be effectively utilized by making the spare house small and the trunk room space must be decreased in order to pTevent ignition from gasoline tank determined in FMVSS standard. In future there is the possibility that such tires are broadly popularized, due to the reason that the pavement percentage of road has been increased and the puncture time has been remarkably decreased. Hereto~ore, ~ the process for injecting air into a usual tire comprises `- injecting air by means of an air compressor provided at the particularly defined places, for example automobile repairing 9 -:
factory, gasoline stand and the like but the above described foldable tire is used only for the spare tire, so that it is necessary to be able to inject air in any time and at any place and there-fore a gas bomb or a portable small type compressor for injecting air has been heretofore mounted on the automobile. However, the injecting bomb becomes empty by one time o~ use and the reinjecting is impossible, so that a new purchase is necessary and the use of such bomb becomes very expensive. Furthermore, as the injecting gas, use has been generally made of chlorodifluoromethane (corre- ~:
sponding to Freon 22) considering the poison against human body, influence upon rubber article and explosion but such a liquefied gas considerably depends upon the temperature, so that it is very difficult to obtain a constant injecting pressure.
Furthermore, the portable compressor is very complicated in the apparatus itself and is considerably expensive and further the handling process suits for car mania and is very difficult for beginners and persons who ~ ~:
seldom contact with machines. -::
An object oE ~he present invention is to provide a method for injecting air into a tire of an automobile, which obviates the drawbacks of the above described methods, can be operated inexpensively and simply and is safe and is stable in the performance, and to provide an apparatus to be used for conducting this method.
In general, an automobile is provided with four tires and when one tire is punctured and cannot be used, such a tire is changed with a spare tire o:E a usual tire or a foldable tire and when an air pressure of the usual spare tire is deficient or in the case of the foldable tire, it is necessary to charge air.
A construction in accordance With the preSent inVen-tion includes an apparatus for selectively transferring pressurized air from three normally inflated vehicle tires mounted on rims which are in turn mounted on a vehicle to a folded space-saving spare tire mounted on a rim not mounted on the vehicle, to thereby inflate the spare tire and enable its replacement of a deflated punctured tire mounted on a rim mounted on the vehicle. The apparatus includes four freely communicating crossed pipe members branching outwardly from a common interconnecting fitting. ~o each pipe member there are four air flow controlling cock valves individually mounted thereto. Three elongated flexible extension tubes are sealingly mounted at their one ends to the outward ends of three of the pipe members. Four adaptor members are individually and sealingly mounted on the outward end of the fourth one of the pîpe members and on the other ends of the extension tubes for ~ ~`
sealingly connecting valves mounted on the rims of the folded space-saving spare tire and the three normall~ inflated tires to the four pipe members.
The present invention will be explained in more detail.
For a better understanding of the invention, reference is taken to the accompanying drawings, wherein:
Figs. 1, 2 and 3 show cross-sectional views of conventional foldable pneumatic tires respectively, Fig. 4 shows a plan view of an embodiment of the apparatus for injecting air according to the presen~ invention;
and Fig. 5 shows an enlarged cross-sectional view of an adaptor to connect to a valve of the tire~
L~
_~_ ~9~
Referring to Fiy. 4, in this apparatus, a tube provided with three branched tubes 15 having three outlets at one end is provided with an adaptor 13a to connect to a valve 12 in a rim 11 of a spare tire through a cock 14 for injecting air at the other end and the three outlets of the above-described tube are connected to adaptors 13b, 13c and 13d to connect to valves in rims of non-punctured tires through cocks 14 by means of pressure rubber hoses 16. :
An explanation will be made hereinafter with respect to the case when a foldable tire of a spare tire is injected with air by using this apparatus. In general, an automobile is provided w.ith four wheels o~ two front wheels and two rear wheels. When one tire among them is ' '' ' ~ 4a -. . , .~ :, ' '':
;,.
i ~ 69 ~
punctured and cannot be used, said tire is changed with a spare tire filled with air to make the normal running feasible but the foldable spare tire has not been ~illed with air. Thus, the spare tire housed in the trunk room is firstly taken out and the valve 12 of said tire is connected to the apparatus as shown in Fig. 4 through the adaptor 13a.
All cocks 14 are closed and the valves of the non-punctured three tires are connected to the apparatus for injecting air through the pressure rubber hoses by means of the adaptors 13b, 13c and 13d.
Then all cocks 14 are opened and air charged in the non-punctured tires is injected into the spare tire.
A volume of air charged in tires of a general passenger car is about 3 x 104 cm3 and a pressure o air charged varies depending upon the kind of au~omobile but is about 1.4 to 1.9 kg/cm2 and the most standard inner pressure is 1.7 kg/cm2. On the other hand, air volume of the spare tire is about 0.6 x 104 cm3 when said tire is housed in a spare house and the air volume when the spare tire is charged with air is about 3 x 104 cm3. When the air charged in three non-punctured tires at an air pressure of 1.7 kg/cm2 is distributed in four tires including the spare tire, the inner pressure of each tire becomes about 1.08 kg/cm2 following to the well known Boyle's law, because the tempera-ture is substantially constant.
As mentioned above, such a foldable tire is used as a spare tire in an urgent case9 such as puncture, so that if the minimum air pressure is 0.~ kg/cm2 from the result of various investigations, the running is generally possible and therefore in order to obtain an air pressure of ~9~
0.4 kg/cm2 in four cires, the air pressure in each o the three tires is merely necessary 0.8 kg/cm2. General drivers, when the air pressure of the tire becomes 1.0 kg/cm2, notice from appearance and vibration and handling when driving that the air pressure is low and supplement air at automobile repairing factory, gasoline stand and the like, so that even when the air pressure is minimum, the air pressure for injecting into the tire can be ensured.
Air is injected into the spare tire under such a condition by means of the apparatus of the present invention, so that when the adaptors are connected to the valves in the rims, valve cores in the valves are concurrently pushed an~
air in ~he tires is flowed into the rubber hoses. Namely, an adaptor 13 shown in Fig. 5 shows the detail of 13a to 13d in Fig. 4 and 17 is a connector, which connects to the cock 14 for injecting air through the rubber hose 16, 18 is a member to push the valve core in the valve 12, 19 is a member screwed into the connector 17 and provided with a member 18 for pushing the valve core and 20 is a rubber packing for preventing leakage of air.
When the apparatus according to the present invention is connected to the valves in the rims of tcires through the adaptors, such a stace is attained that the members 18 for pushing the valve core go afore, the adaptors 13 move back, the valve cores in the valves 12 are pushed and air is injected into the spare tire. ~ccordingly, when the cocks 14 are opened after the apparatus for injecting air is connected to the tires, air is supplied to the spare tire ~rom the non-punctured tires and the inner pressure of each tire becomes equal and the injecting of air inco the spare tire is finished. In the above description, a method wherein the three hoses 16 connecting to the non-punctured ~hree tires are connected to the spare tire through the three branched tubes 15 and all the cocks 14 are S concurrently opened to inject air into the spare tire, is disclosed but air may be taken out from each non-punctured tire in turn. In this case, the three branched tubes may be used but two branched tube on a straight ~ube may be used.
Furthermore, as mentioned above, when a usual tire is used as a spare tire and the air pressure in the spare tire is deficient, the above described apparatus according to the present invention also may be used to inject air into the spare tire from non-punctured tires.
Nhen the foldable tire is housed in a spare house when not using, air has been discharged, so that the outer diameter and the breadth of the tire are very smaller than the size when the tire is used, that is air is injected.
A typical tire is one as shown in Fig. 1, which is fitted with a rim and folded in the diameteT direction o-f the tire `~
and this tire is expanded in the diameter direction as shown in the dot-dash line and is used. In addition, there are ones having the forms as shown in Figs. 2 and 3 and the tire shown in Fig. 2 is folded in the cross-sectional direction of the tire and the tire in Fig. 3 is folded in the outside of the rim at the bead portion and in both cases, the tires are expanded in the diameter direction by injecting air and then are used.
These tires have been fairly broadly used in United States of Ameri.ca and Europe and this is because the trunk room must be effectively utilized by making the spare house small and the trunk room space must be decreased in order to pTevent ignition from gasoline tank determined in FMVSS standard. In future there is the possibility that such tires are broadly popularized, due to the reason that the pavement percentage of road has been increased and the puncture time has been remarkably decreased. Hereto~ore, ~ the process for injecting air into a usual tire comprises `- injecting air by means of an air compressor provided at the particularly defined places, for example automobile repairing 9 -:
factory, gasoline stand and the like but the above described foldable tire is used only for the spare tire, so that it is necessary to be able to inject air in any time and at any place and there-fore a gas bomb or a portable small type compressor for injecting air has been heretofore mounted on the automobile. However, the injecting bomb becomes empty by one time o~ use and the reinjecting is impossible, so that a new purchase is necessary and the use of such bomb becomes very expensive. Furthermore, as the injecting gas, use has been generally made of chlorodifluoromethane (corre- ~:
sponding to Freon 22) considering the poison against human body, influence upon rubber article and explosion but such a liquefied gas considerably depends upon the temperature, so that it is very difficult to obtain a constant injecting pressure.
Furthermore, the portable compressor is very complicated in the apparatus itself and is considerably expensive and further the handling process suits for car mania and is very difficult for beginners and persons who ~ ~:
seldom contact with machines. -::
An object oE ~he present invention is to provide a method for injecting air into a tire of an automobile, which obviates the drawbacks of the above described methods, can be operated inexpensively and simply and is safe and is stable in the performance, and to provide an apparatus to be used for conducting this method.
In general, an automobile is provided with four tires and when one tire is punctured and cannot be used, such a tire is changed with a spare tire o:E a usual tire or a foldable tire and when an air pressure of the usual spare tire is deficient or in the case of the foldable tire, it is necessary to charge air.
A construction in accordance With the preSent inVen-tion includes an apparatus for selectively transferring pressurized air from three normally inflated vehicle tires mounted on rims which are in turn mounted on a vehicle to a folded space-saving spare tire mounted on a rim not mounted on the vehicle, to thereby inflate the spare tire and enable its replacement of a deflated punctured tire mounted on a rim mounted on the vehicle. The apparatus includes four freely communicating crossed pipe members branching outwardly from a common interconnecting fitting. ~o each pipe member there are four air flow controlling cock valves individually mounted thereto. Three elongated flexible extension tubes are sealingly mounted at their one ends to the outward ends of three of the pipe members. Four adaptor members are individually and sealingly mounted on the outward end of the fourth one of the pîpe members and on the other ends of the extension tubes for ~ ~`
sealingly connecting valves mounted on the rims of the folded space-saving spare tire and the three normall~ inflated tires to the four pipe members.
The present invention will be explained in more detail.
For a better understanding of the invention, reference is taken to the accompanying drawings, wherein:
Figs. 1, 2 and 3 show cross-sectional views of conventional foldable pneumatic tires respectively, Fig. 4 shows a plan view of an embodiment of the apparatus for injecting air according to the presen~ invention;
and Fig. 5 shows an enlarged cross-sectional view of an adaptor to connect to a valve of the tire~
L~
_~_ ~9~
Referring to Fiy. 4, in this apparatus, a tube provided with three branched tubes 15 having three outlets at one end is provided with an adaptor 13a to connect to a valve 12 in a rim 11 of a spare tire through a cock 14 for injecting air at the other end and the three outlets of the above-described tube are connected to adaptors 13b, 13c and 13d to connect to valves in rims of non-punctured tires through cocks 14 by means of pressure rubber hoses 16. :
An explanation will be made hereinafter with respect to the case when a foldable tire of a spare tire is injected with air by using this apparatus. In general, an automobile is provided w.ith four wheels o~ two front wheels and two rear wheels. When one tire among them is ' '' ' ~ 4a -. . , .~ :, ' '':
;,.
i ~ 69 ~
punctured and cannot be used, said tire is changed with a spare tire filled with air to make the normal running feasible but the foldable spare tire has not been ~illed with air. Thus, the spare tire housed in the trunk room is firstly taken out and the valve 12 of said tire is connected to the apparatus as shown in Fig. 4 through the adaptor 13a.
All cocks 14 are closed and the valves of the non-punctured three tires are connected to the apparatus for injecting air through the pressure rubber hoses by means of the adaptors 13b, 13c and 13d.
Then all cocks 14 are opened and air charged in the non-punctured tires is injected into the spare tire.
A volume of air charged in tires of a general passenger car is about 3 x 104 cm3 and a pressure o air charged varies depending upon the kind of au~omobile but is about 1.4 to 1.9 kg/cm2 and the most standard inner pressure is 1.7 kg/cm2. On the other hand, air volume of the spare tire is about 0.6 x 104 cm3 when said tire is housed in a spare house and the air volume when the spare tire is charged with air is about 3 x 104 cm3. When the air charged in three non-punctured tires at an air pressure of 1.7 kg/cm2 is distributed in four tires including the spare tire, the inner pressure of each tire becomes about 1.08 kg/cm2 following to the well known Boyle's law, because the tempera-ture is substantially constant.
As mentioned above, such a foldable tire is used as a spare tire in an urgent case9 such as puncture, so that if the minimum air pressure is 0.~ kg/cm2 from the result of various investigations, the running is generally possible and therefore in order to obtain an air pressure of ~9~
0.4 kg/cm2 in four cires, the air pressure in each o the three tires is merely necessary 0.8 kg/cm2. General drivers, when the air pressure of the tire becomes 1.0 kg/cm2, notice from appearance and vibration and handling when driving that the air pressure is low and supplement air at automobile repairing factory, gasoline stand and the like, so that even when the air pressure is minimum, the air pressure for injecting into the tire can be ensured.
Air is injected into the spare tire under such a condition by means of the apparatus of the present invention, so that when the adaptors are connected to the valves in the rims, valve cores in the valves are concurrently pushed an~
air in ~he tires is flowed into the rubber hoses. Namely, an adaptor 13 shown in Fig. 5 shows the detail of 13a to 13d in Fig. 4 and 17 is a connector, which connects to the cock 14 for injecting air through the rubber hose 16, 18 is a member to push the valve core in the valve 12, 19 is a member screwed into the connector 17 and provided with a member 18 for pushing the valve core and 20 is a rubber packing for preventing leakage of air.
When the apparatus according to the present invention is connected to the valves in the rims of tcires through the adaptors, such a stace is attained that the members 18 for pushing the valve core go afore, the adaptors 13 move back, the valve cores in the valves 12 are pushed and air is injected into the spare tire. ~ccordingly, when the cocks 14 are opened after the apparatus for injecting air is connected to the tires, air is supplied to the spare tire ~rom the non-punctured tires and the inner pressure of each tire becomes equal and the injecting of air inco the spare tire is finished. In the above description, a method wherein the three hoses 16 connecting to the non-punctured ~hree tires are connected to the spare tire through the three branched tubes 15 and all the cocks 14 are S concurrently opened to inject air into the spare tire, is disclosed but air may be taken out from each non-punctured tire in turn. In this case, the three branched tubes may be used but two branched tube on a straight ~ube may be used.
Furthermore, as mentioned above, when a usual tire is used as a spare tire and the air pressure in the spare tire is deficient, the above described apparatus according to the present invention also may be used to inject air into the spare tire from non-punctured tires.
Claims (2)
1. An apparatus for selectively transferring pressurized air from three normally inflated vehicle tires mounted on rims which are in turn mounted on a vehicle to a folded space-saving spare tire mounted on a rim not mounted on the vehicle, to thereby inflate the spare tire and enable its replacement of a deflated punctured tire mounted on a rim mounted on the vehicle, comprising:
(a) four freely communicating crossed pipe members branching outwardly from a common interconnecting fitting, (b) four air flow controlling cock valves individually mounted in each of the pipe members, (c) three elongated, flexible extension tubes sealingly mounted at their one ends to the outward ends of three of the pipe members, and (d) four adaptor members individually and sealingly mounted on the outward end of the fourth one of the pipe members and on the other ends of the extension tubes for sealingly connecting valves mounted on the rims of the folded space-saving spare tire and the three normally inflated tires to the four pipe members.
(a) four freely communicating crossed pipe members branching outwardly from a common interconnecting fitting, (b) four air flow controlling cock valves individually mounted in each of the pipe members, (c) three elongated, flexible extension tubes sealingly mounted at their one ends to the outward ends of three of the pipe members, and (d) four adaptor members individually and sealingly mounted on the outward end of the fourth one of the pipe members and on the other ends of the extension tubes for sealingly connecting valves mounted on the rims of the folded space-saving spare tire and the three normally inflated tires to the four pipe members.
2. The apparatus as claimed in claim 1, wherein the adaptor is provided with a member for pushing a valve core in a valve of a rim of the spare tire.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9207676A JPS5318106A (en) | 1976-08-03 | 1976-08-03 | Method and device for pouring air into pneumatic tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1069809A true CA1069809A (en) | 1980-01-15 |
Family
ID=14044351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA283,899A Expired CA1069809A (en) | 1976-08-03 | 1977-08-02 | Method and an apparatus for injecting air into a spare pneumatic tire |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5318106A (en) |
| CA (1) | CA1069809A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2663348A (en) * | 1949-09-16 | 1953-12-22 | Trucktor Corp | Tire inflator |
| IT640951A (en) * | 1960-11-28 | |||
| JPS53433B2 (en) * | 1972-03-01 | 1978-01-09 |
-
1976
- 1976-08-03 JP JP9207676A patent/JPS5318106A/en active Pending
-
1977
- 1977-08-02 CA CA283,899A patent/CA1069809A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5318106A (en) | 1978-02-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |