초록 ▼

A disposable canister filled with sealant liquid has an inner closure for retaining the sealant liquid inside the canister; a compressed-air inlet conduit; an outlet conduit for receiving the sealant liquid when the closure is in an open position; a first portion having one of the inlet and outlet c

A disposable canister filled with sealant liquid has an inner closure for retaining the sealant liquid inside the canister; a compressed-air inlet conduit; an outlet conduit for receiving the sealant liquid when the closure is in an open position; a first portion having one of the inlet and outlet conduits; and a second portion; the first and second portions being joined by a weld to form a tank which holds the sealant liquid in a ready-for-use position by means of the closure.

대표청구항 ▼

1. A disposable canister filled with sealant liquid said canister having a rigid body section and a neck section narrower than the body section, said neck section and comprising an inner closure for retaining said sealant liquid inside the canister, said closure being configured to be pressure-relea

1. A disposable canister filled with sealant liquid said canister having a rigid body section and a neck section narrower than the body section, said neck section and comprising an inner closure for retaining said sealant liquid inside the canister, said closure being configured to be pressure-released by air pressure; a compressed-air inlet conduit; an outlet conduit for receiving the sealant liquid when said closure is in an open position; said canister comprising a first portion including said neck section forming one piece with at least one of said inlet and outlet conduits; and a second portion; wherein said first and second portions are joined by a weld located on the body section to form a tank which, by means of said closure, holds the sealant liquid in a ready-for-use position in which the sealant liquid exerts hydrostatic pressure on said closure and wherein said first portion comprises a protuberance having the inlet or the outlet and a flange departing radially from the protuberance, the welding being interposed between the flange and the second portion. 2. A canister according to claim 1, wherein the flange comprises a cylindrical wall opposite to the protuberance, the welding being interposed between the cylindrical wall and the second portion. 3. A canister as claimed in claim 1, wherein the closure comprises a casing having at least one inlet port connected to the inlet and at least one outlet port connected to the outlet and a moveable shutter housed in the casing to close the inlet and outlet in a closed position. 4. A canister as claimed in claim 1, wherein said weld is so located that said sealant liquid is retained by gravity inside one of said first and second portions. 5. A canister as claimed in claim 1, wherein said first and second portions are made of the same polymeric material. 6. A canister as claimed in claim 1, wherein said weld is a butt weld. 7. A canister as claimed in claim 1, wherein said closure is irreversible. 8. A canister as claimed in claim 1, wherein at least one of said inlet and outlet conduits forms one piece with said first portion. 9. A canister as claimed in claim 1, wherein said weld is a friction weld. 10. A canister as claimed in claim 1, wherein one of said first and second portions forms one piece with a male or female element of a shape coupling by which to fix in releasable manner said canister to a stand and keep said canister in a position of use. 11. A canister as claimed in claim 1, wherein said outlet conduit is fitted with a disposable tube connectable releasably to an inflatable article to inject the sealant liquid and/or compressed air. 12. A canister as claimed in claim 1, wherein said closure, in a closed position, separates both said inlet conduit and said outlet conduit from the sealant liquid. 13. A canister as claimed in claim 1 wherein said closure is a preassembled unit connected rigidly, in a closed position, to one of said first and second portions. 14. A canister as claimed in claim 1, wherein both said inlet conduit and said outlet conduit are formed in one piece with said first portion. 15. A canister as claimed in claim 1, wherein said inlet conduit and said outlet conduit are fluidically connected solely by said tank when said closure is open. 16. A canister as claimed in claim 1, wherein the surface of the sealant liquid is above at least one of said inlet and outlet conduits when the sealant liquid is injected. 17. A canister as claimed in claim 1, wherein at least one of said first and second portions has a minimum thickness; and a weld area of a thickness greater than said minimum thickness. 18. A canister as claimed in claim 1, wherein said weld is one in number. 19. A canister as claimed in claim 1, wherein one of said first and second portions is concave and, in a welding position, contains the sealant liquid. 20. A canister as claimed in claim 1, wherein said closure is surrounded by the sealant liquid. 21. A canister as claimed in claim 1, wherein the first and the second portion are made by means of injection molding. 22. A method of producing a disposable canister as claimed in claim 1 comprising an inner closure for retaining sealant liquid inside the canister; a compressed-air inlet conduit; an outlet conduit for receiving the sealant liquid when said closure is in an open position; a first portion having one of said inlet and outlet conduits; and a second portion which, closed on the first portion defines a tank in which the closure retains the sealant liquid, the method comprising the steps of: fitting said closure to one of said first and second portions; andthen welding the first and second portions together to form said canister. 23. A method as claimed in claim 22, characterized in that one of said first and second portions is concave and, in a welding position, contains an amount of sealant liquid suitable for repair; and wherein said first or second concave portion is filled with the sealant liquid prior to said welding step. 24. A method as claimed in claim 22, characterized in that said closure closes at least one of said inlet and outlet conduits; and said fitting step is performed before said first or second concave portion is filled, so as to retain the sealant liquid in one of said first and second portions by means of said closure.