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 body section and a neck section narrower than the body section, said neck section comprising an inner closure (5) for retaining said sealant liquid inside the canister (1); a compressed-air inlet conduit (2); an outlet condui

1. A disposable canister filled with sealant liquid said canister having a body section and a neck section narrower than the body section, said neck section comprising an inner closure (5) for retaining said sealant liquid inside the canister (1); a compressed-air inlet conduit (2); an outlet conduit (3) for receiving the sealant liquid when said closure (5) is in an open position; said canister comprising a first portion (7) including said neck section and forming one piece with at least one of said inlet and outlet conduits (2, 3); and a second portion (8); said first and second portions (7, 8) being joined by a rotation friction weld to form a tank (4) which, by means of said closure (5), holds the sealant liquid in a ready-for-use position in which the sealant liquid exerts hydrostatic pressure on said closure (5), said weld being located on the body section of the canister such that the sealant liquid can be present in one portion of the canister prior to the weld being formed, the weld being of such nature that at least one of said first and second portions (7, 8) has a minimum thickness (S1); and a weld area (9, I) of a thickness (S2) greater than said minimum thickness. 2. A canister as claimed in claim 1, characterized in that said weld is so located that said sealant liquid is retained by gravity inside one of said first and second portions (7, 8). 3. A canister as claimed in claim 1, characterized in that said first and second portions (7, 8) are made of the same polymeric material. 4. A canister as claimed in claim 1, characterized in that said weld is a butt weld. 5. A canister as claimed in claim 1, characterized in that said closure (5) is irreversible. 6. A canister as claimed in claim 1, characterized in that at least one of said inlet and outlet conduits (2, 3) forms one piece with said first portion (7). 7. A canister as claimed in claim 1, characterized in that one of said first and second portions (7, 8) forms one piece with a male or female element (28) of a shape coupling by which to fix said canister to a stand. 8. A canister as claimed in claim 1, characterized in that said outlet conduit (3) is fitted with a disposable tube (6) connectable releasably to an inflatable article to inject the sealant liquid and/or compressed air. 9. A canister as claimed in claim 1, characterized in that said closure (5), in a closed position, separates both said inlet conduit (2) and said outlet conduit (3) from the sealant liquid. 10. A canister as claimed in claim 1, characterized in that said closure (5) is a preassembled unit connected rigidly, in a closed position, to one of said first and second portions (7, 8). 11. A canister as claimed in claim 1, characterized in that both said inlet conduit (2) and said outlet conduit (3) are formed in one piece with said first portion (7). 12. A canister as claimed in claim 1, characterized in that said inlet conduit (2) and said outlet conduit (3) are fluidically connected solely by said tank (4) when said closure (5) is open. 13. A canister as claimed in claim 1, characterized in that the surface of the sealant liquid is above at least one of said inlet and outlet conduits (2, 3) when the sealant liquid is injected. 14. A canister as claimed in claim 1, characterized in that said closure (5) is pressure-released by air pressure. 15. A canister as claimed in claim 1, characterized in that said weld is one in number. 16. A canister as claimed in claim 1, characterized in that one of said first and second portions (7; 8) is concave and, in a welding position, contains a repair amount of sealant liquid. 17. A canister as claimed in claim 1, characterized in that said second portion comprises a ring and said first portion comprises an annular seat to house the ring. 18. A method of producing a disposable canister having a body section and a neck section narrower than the body section, said neck section comprising an inner closure (5) for retaining sealant liquid inside the canister (1); a compressed-air inlet conduit (2); an outlet conduit (3) for receiving the sealant liquid when said closure (5) is in an open position; a first portion (7) having one of said inlet and outlet conduits (2, 3); and a second portion (8); the method comprising the steps of: fitting said closure to one of said first and second portions (7, 8);introducing sealant liquid into the first or second portion of said canister and orienting said portion such that the sealant liquid remains in said portion under the influence of gravity; andthen rotation friction welding the first and second portions together to form said canister so as to form a weld in the body section of said canister. 19. A method as claimed in claim 18, 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 (7, 8) is filled with the amount of sealant liquid prior to said welding step. 20. A method as claimed in claim 18, characterized in that said closure (5) closes at least one of said inlet and outlet conduits (2, 3); 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 (7, 8) by means of said closure (5). 21. A method as claimed in claim 18, characterized in that said second portion comprises a ring and said first portion comprises an annular seat to house the ring thereby providing appropriate guidance during spinning occurring during rotation friction welding.