摘要:
The invention provides container closure assemblies, especially for carbonated beverage containers, having substantially helical second thread segment (20) with a profiled lower thread surface (24). The profiled lower thread surface (24) includes a first, lower region (28) with a low pitch and a second region (30) with a steep pitch. The thread (20) may also include a step feature (32) to block unscrewing of the closure at an intermediate position where gas venting can take place, and a third region (34) of the said lower surface having a low pitch adjacent to the step. The closures are easy to apply and remove, and do not blow off unpredictably or uncontrollably under pressure.
摘要:
The invention provides a container closure assembly for storing fluids under pressure, said assembly comprising: a container neck (10); a closure (12) for said neck; a first screw thread (14) on one of said neck and closure; a second screw thread (16) on another of said neck and closure; said second screw thread being engageable with said first screw thread; means (13) for forming a seal between said neck and closure when said closure is screwed down on said neck; mutually engageable elements (34, 38) on said neck and closure to block or restrict rotation of said closure in an unscrewing direction beyond an intermediate position when said closure is under an axial pressure in a direction emerging from said container neck; wherein said neck and closure are constructed and arranged to provide a vent for venting fluid from said container neck at least when said closure is in said intermediate position.
摘要:
A container neck (14) and a container closure comprises a first thread (15) on one of the neck and the closure, a complementary second thread on the other of the neck and the closure such that the closure is movable from fully disengaged from the neck to fully closed by turning the closure relative to the neck by less than 360°, at least one stop formation (17, 18) carried by said one of the neck (14) and the closure, and stop means on said other of the neck and the closure engageable with the stop formation or at least one of the stop formations to hold the closure in a closed position on the neck. The arrangement of the or each stop formation (17, 18), the stop means and the threads is such that the stop means is rotated past the stop formation or at least one of the stop formations (17, 18) without engagement therewith when the closure is screwed on to the neck, engagement of the stop means with the stop formation or at least one of the stop formations commencing only when the closed position is neared.
摘要:
The invention provides a container closure assembly comprising: a container neck (10) having side walls defining an opening at one end thereof and a lip (14) extending around the opening; a cap (12) for said neck, the cap having a base portion(22) and a threaded skirt portion (24); a first screw thread (16) on the neck; a second screw thread (26) on an inner surface of the threaded skirt of the cap; said first and second screw threads being configured to enable a user to secure, remove and resecure the cap into a sealing position on the neck by rotation of the cap on the neck; a sealing plug (52) extending from said base portion of the cap inside and substantially concentric with said threaded skirt portion of the cap, wherein the sealing plug is an olive sealing plug for forming a seal against an inside surface of the container neck when the cap is secured on the container neck; and a sealing skirt (54) extending from said base portion of the cap intermediate said sealing plug and said threaded skirt portion of the cap and substantially concentric with said sealing plug and said threaded skirt portion of the cap, wherein said cap can be displaced towards said neck from said sealing position by application of an axial force without rotation of the cap on the neck and substantially without plastic deformation of the cap.
摘要:
A container neck and closure assembly, wherein the container neck (10) comprises a first screw thread (14) on an internal surface thereof and the closure (12) comprises a cylindrical plug (32) for insertion into the container neck, said plug having a second screw thread (36, 37) on an outer surface thereof for engagement with the first screw thread to secure and resecure the closure on the neck.
摘要:
A container closure assembly comprising a threaded closure with a sealing plug (24) and a sealing skirt (20) pinching a container lip (5). The skirt and the plug comprise sealing ribs (21, 22, 26, 27) that engage the lip of the container. The ribs are located at substantially equal longitudinal distances from the base (3) of the closure.
摘要:
A closure is threadedly securable to a container neck (70). The closure carries a tamper evident ring (80) which includes a collar from which extend a plurality of inwardly inclined resilient tabs (82). The tabs can flex outwardly relative to each other without stressing substantially the collar to enable the ring to fit easily over a projecting bead (72) on the neck. Ratchet stops (74) on the neck engage the tabs (82) to enable the ring to rotate relative to the neck in a screwing-on direction, but to restrict rotation in the opposite direction. When the closure is removed for the first time, the tabs (82) abut the ratchet stops (74) and the bead (72) to release the ring from the closure and to retain the ring securely on the neck. The ring can be of plastics and integrally joined to the closure by severable connections.
摘要:
A closure is threadedly securable to a container neck (70). The closure carries a tamper evident ring (80) which includes a collar from which extend a plurality of inwardly inclined resilient tabs (82). The tabs can flex outwardly relative to each other without stressing substantially the collar to enable the ring to fit easily over a projecting bead (72) on the neck. Ratchet stops (74) on the neck engage the tabs (82) to enable the ring to rotate relative to the neck in a screwing-on direction, but to restrict rotation in the opposite direction. When the closure is removed for the first time, the tabs (82) abut the ratchet stops (74) and the bead (72) to release the ring from the closure and to retain the ring securely on the neck. The ring can be of plastics and integrally joined to the closure by severable connections.
摘要:
A threaded container closure assembly, comprising: a container neck (10) having an opening; a-.closure (12) for said neck, the closure having a base portion (22) and a skirt portion (24); a first screw thread on the neck, said first screw thread comprising one or more first thread segments (16), and a second screw thread on an inner surface of the skirt of the closure, said second screw thread comprising one or more second thread segments (26); a first locking projection (44) on the container neck separate from the first thread segments (16) and a second locking projection (46) on the inner surface of the skirt of the closure separate from the second thread segments (26), said first and second locking projections being configured to resist unscrewing of the closure from the fully engaged position on the container neck after the closure has been secured or resecured on the container neck until a predetermined minimum opening torque is applied; wherein said first and second locking projections (44, 46) longitudinally overlap the first or the second thread segments when the closure is in the fully engaged position on the container neck.
摘要:
A container closure assembly comprising: a container neck (1) having a first thread on an outer surface thereof; a closure (2) for the neck, the closure having an opening therein, a skirt (5) extending downwardly, and a second thread on an internal surface of the skirt for engaging the first thread on the container neck; and complementary valve elements on the neck and the closure, wherein the valve elements engage to provide a fluid-tight seal over the neck when the closure is fully secured on the neck, but the valve elements allow fluid from the neck to flow out through the opening when the closure is at an intermediate position at which the closure is still retained on the neck, and wherein the closure (2) is moveable from the fully secured position to the intermediate position by relative rotation of the closure and the neck; wherein the closure comprises a downwardly extending cylindrical plug seal (14) that forms a sealing fit in a cylindrical bore of the container neck both when the closure is at the intermediate position and when the closure is at the sealing position on the neck.