초록 ▼

A storage and drinking container for pressurized beverages includes a drinking vessel 1 having a lip 3 and a lid formed from a cap 5 and retaining ring 12. The cap 5 seals with a surface 4 on the inside neck of the vessel and is retained in place by fingers 8 engaging under a lip 3. The fingers 8 ar

A storage and drinking container for pressurized beverages includes a drinking vessel 1 having a lip 3 and a lid formed from a cap 5 and retaining ring 12. The cap 5 seals with a surface 4 on the inside neck of the vessel and is retained in place by fingers 8 engaging under a lip 3. The fingers 8 are retained in position by a retaining ring 12. Cooperating sets of cammed surfaces 10 and 13 on cap 5 and ring 12 act on rotation of the ring to axially separate the ring 12 from the cap 5, releasing the fingers 8 from under the lip 3 and permitting the lid to be removed. A drinking vessel with a wide neck can be reliably sealed without the necessity to provide screw threads on the outer surface of the vessel 1.

대표청구항 ▼

1. A storage and drinking container assembly for pressurised beverages, the container assembly comprising: a drinking vessel comprising: a circumferential sidewall; andan open neck having a circumferential inner surface and lip; and,a lid for sealing the vessel, the lid comprising: a cap comprising:

1. A storage and drinking container assembly for pressurised beverages, the container assembly comprising: a drinking vessel comprising: a circumferential sidewall; andan open neck having a circumferential inner surface and lip; and,a lid for sealing the vessel, the lid comprising: a cap comprising: a concave closed top including a vent sealed by a pressure release closure in the form of a frangible peg,an outer skirt having a plurality of fingers for engaging the lip, andan inner circumferential wall extending upward from the concave closed top; and,a retaining ring comprising: an outer skirt to retain the fingers of the cap in contact with the lip, andan inner skirt,wherein at least one of the inner circumferential wall and the inner skirt includes at least cammed surface for cooperating with the other of the inner circumferential wall and the inner skirt so that rotation of the cap with respect to the retaining ring causes the at least one cammed surface to axially move the retaining ring apart from the cap. 2. The container assembly as claimed in claim 1, wherein the pressure release closure of the cap releases pressure from the vessel at the commencement of rotation of the retaining ring relative to the cap. 3. The container assembly as claimed in claim 1, wherein the inner circumferential wall of the cap extends upward at a circumference of the concave closed top and can be inserted into the neck of the vessel until the fingers extending from the outer skirt of the cap contact the lip, so that an inner outward facing surface of the retaining ring abuts an inward facing surface of the outer skirt of the cap and an outer inward facing surface of the retaining ring abuts an outward facing surface of the fingers to sandwich the fingers of the outer skirt of the cap between the outer inward facing surface and the inner outward facing surface of the retaining ring, with the neck and the lip of the vessel sandwiched between the fingers of the outer skirt of the cap. 4. The container assembly as claimed in claim 1, wherein the closed top is arranged such that any pressure within the vessel deforms the closed top to cause the inner surface circumferential wall to exert radial pressure on the inner surface of the open neck. 5. The container assembly as claimed in claim 1, wherein the cap and retaining ring are arranged to be fitted to the vessel by pushing the retaining ring and cap onto the vessel wherein the closed top of the cap is first forced to enter the neck of the vessel until the fingers engage the top of the neck of the vessel wherein the retaining ring and cap are then pushed axially together causing the retaining ring to retain the fingers under the lip of the neck of the vessel. 6. The container assembly as claimed in claim 1, wherein the cap and retaining ring are assembled prior to fitting to the container. 7. The container assembly as claimed in claim 1, arranged such that rotation of the retaining ring releases any pressure in the vessel and then releases the fingers so that the lid can then be removed from the vessel. 8. A storage and drinking container assembly for pressurized beverages, the container assembly comprising: a drinking vessel comprising: a circumferential sidewall;an open neck having a circumferential inner surface and a lip; and,a lid for sealing the vessel, the lid comprising: a cap comprising: a concave closed top,an outer skirt having a plurality of fingers for engaging the lip, andan inner circumferential wall extending upward from the concave closed top; anda retaining ring comprising: an outer skirt to retain the fingers of the cap in contact with the lip, the outer skirt having an inwardly protruding rim, andan inner skirt,wherein the at least one of the inner circumferential wall and the inner skirt includes at least one cammed surface for cooperating with the other of the inner circumferential wall and the inner skirt so that rotation of the cap with respect to the retaining ring causes the at least one cammed surface to axially move the retaining ring apart from the cap, and when the outer skirt of the retaining ring is axially moved apart from the cap, the inwardly protruding rim of the outer skirt of the retaining ring engages the fingers to lift them from under the lip. 9. The container assembly as claimed in claim 8, wherein the retaining ring retains protrusions on the fingers under the lip. 10. The container assembly as claimed in claim 8, wherein the lip is continuous about the neck. 11. The container assembly as claimed in claim 8, wherein the lip is formed on the top edge of the neck. 12. The container assembly as claimed in claim 8, wherein the cap is moulded as a single piece. 13. The container assembly as claimed in claim 8, wherein the cap comprises a single moulded piece and a sealing band. 14. The container assembly as claimed in claim 8, wherein the cap, and retaining ring are adapted to be threadlessly joined to seal the vessel. 15. The container assembly as claimed in claim 8, wherein the inner circumferential wall of the cap extends upward at a circumference of the concave closed top and can be inserted into the neck of the vessel until the fingers extending from the outer skirt of the cap contact the lip, so that an inner outward facing surface of the retaining ring abuts an inward facing surface of the outer skirt of the cap and an outer inward facing surface of the retaining ring abuts an outward facing surface of the fingers to sandwich the fingers of the outer skirt of the cap between the outer inward facing surface and the inner outward facing surface of the retaining ring, with the neck and the lip of the vessel sandwiched between the fingers of the outer skirt of the cap. 16. The container assembly as claimed in claim 8, wherein the closed top is arranged such that any pressure within the vessel deforms the closed top to cause the inner circumferential wall to exert radial pressure on the inner surface of the open neck. 17. The container assembly as claimed in claim 8, wherein the cap and retaining ring are arranged to be fitted to the vessel by pushing the retaining ring and cap onto the vessel wherein the closed top of the cap is first forced to enter the neck of the vessel until the fingers engage the top of the neck of the vessel wherein the retaining ring and cap are then pushed axially together causing the retaining ring to retain the fingers under the lip of the neck of the vessel. 18. The container assembly as claimed in claim 8, wherein the cap and retaining ring are assembled prior to fitting to the container. 19. The container assembly as claimed in claim 8, arranged such that rotation of the retaining ring releases any pressure in the vessel and then releases the fingers so that the lid can then be removed from the vessel. 20. The container assembly as claimed in claim 8, wherein the lip is on an outer surface of the neck. 21. The container assembly as claimed in claim 20, wherein when the lid is on the vessel the fingers of the cap extend from the cap over the lip.