Abstract: A pressure pack dispenser (100) for dispensing a product comprises a cylindrical container (401) with a product outlet through which the product is dispensed, a composite piston (408) movably mounted within the container, and a pressurised propellant. The composite piston comprises a first upper piston (409A) coupled to a second lower piston (409B) to permit limited relative axial movement and a viscous sealant material (410) located between the first and second pistons. The propellant comprises a compressed gas which remains in the gaseous phase as the piston (408) moves from a first full position to a second exhausted position, or a mixture of a liquid propellant and a compressed gas selected such that in the full position the mixture is at a pressure greater than the vapour pressure of the liquid propellant. A clearance is provided between the second lower piston (409B) and the container wall (401A) which is filled with the sealant (410) as the composite piston moves to expel product.

Abstract: A closure device for firing an additive into a carbonated beverage bottle with a neck comprises a cap member and a housing. The cap member includes a pressurised tank containing the additive and a propellant and has a bottom aperture. The housing engages with the neck and includes a plug member which engages with the bottom aperture. The cap member can be lifted relative to the housing from a first armed or closed position in which the plug member closes the bottom aperture to a second firing position in which the plug member provides a communication path from the tank through a nozzle in the plug member.

Abstract: A closure device (210) for dispensing an additive product into a container (34) having a main liquid compartment and an opening with a threaded container neck (38) comprises a cap member (36) having a threaded side wall (37) adapted to be secured to the threaded container neck (38), a pressurised fluid chamber (60) fixed to the cap member (36) containing an additive product, and a plug member housing (54) including a plug member (64) engageable in a bottom aperture (66) of the fluid chamber and a flange portion (58) adapted to extend across the top of the container neck (38).

Abstract: A closure device (210) for use on the neck (238) of a bottle comprises a cap member (236) having a side wall (237) adapted to be secured to the neck, a fluid chamber (260) fixed at its upper end to the cap member and having a bottom aperture (266) at its lower end, a housing (254) at least partially surrounding the fluid chamber and having a flange member (258) adapted to extend at least partially across the top of the container neck, and a plug member (264) fixed to the housing and sealingly engageable in the bottom aperture of the fluid chamber.

Abstract: A closure device (210) for dispensing an additive product into a container (34) having a main liquid compartment and an opening with a threaded container neck (38) comprises a cap member (36) having a threaded side wall (37) adapted to be secured to the threaded container neck (38), a pressurised fluid chamber (60) fixed to the cap member (36) containing an additive product, and a plug member housing (54) including a plug member (64) engageable in a bottom aperture (66) of the fluid chamber and a flange portion (58) adapted to extend across the top of the container neck (38).

Abstract: A pressure pack dispenser (100) for dispensing a product comprises a cylindrical container (401) with a product outlet through which the product is dispensed, a composite piston (408) movably mounted within the container, and a pressurised propellant. The composite piston comprises a first upper piston (409A) coupled to a second lower piston (409B) to permit limited relative axial movement and a viscous sealant material (410) located between the first and second pistons. The propellant comprises a compressed gas which remains in the gaseous phase as the piston (408) moves from a first full position to a second exhausted position, or a mixture of a liquid propellant and a compressed gas selected such that in the full position the mixture is at a pressure greater than the vapour pressure of the liquid propellant. A clearance is provided between the second lower piston (409B) and the container wall (401A) which is filled with the sealant (410) as the composite piston moves to expel product.

Abstract: A valve assembly (10) for dispensing a flowable product from a pressurised container (200), the valve assembly comprises a resilient sleeve member (16) comprising a lower fixing portion (18), an intermediate deformable portion (20) and an upper sealing portion (22), a valve stem (28) extending within the resilient sleeve member (16) and fixed to the lower fixing portion (18) of the resilient sleeve member (16), and an actuator (46) mounted on the upper sealing portion (22) of the resilient sleeve member (16). The valve stem (28) includes a hollow cylindrical body (38), an end cap (32) closing an upper end of the hollow cylindrical body (38), and one or more apertures (34) arranged around the circumference of the hollow cylindrical body (38) adjacent to the end cap (32). The apertures (34) are covered by the upper sealing portion (22) of the resilient sleeve member (16) in a closed position of the valve assembly (10).

Abstract: A closure device for firing an additive into a carbonated beverage bottle with a neck comprises a cap member and a housing. The cap member includes a pressurised tank containing the additive and a propellant and has a bottom aperture. The housing engages with the neck and includes a plug member which engages with the bottom aperture. The cap member can be lifted relative to the housing from a first armed or closed position in which the plug member closes the bottom aperture to a second firing position in which the plug member provides a communication path from the tank through a nozzle in the plug member.

Abstract: A closure device (210) for use on the neck (238) of a bottle comprises a cap member (236) having a side wall (237) adapted to be secured to the neck, a fluid chamber (260) fixed at its upper end to the cap member and having a bottom aperture (266) at its lower end, a housing (254) at least partially surrounding the fluid chamber and having a flange member (258) adapted to extend at least partially across the top of the container neck, and a plug member (264) fixed to the housing and sealingly engageable in the bottom aperture of the fluid chamber.

Abstract: A valve assembly (10) for dispensing a flowable product from a pressurised container (200), the valve assembly comprises a resilient sleeve member (16) comprising a lower fixing portion (18), an intermediate deformable portion (20) and an upper sealing portion (22), a valve stem (28) extending within the resilient sleeve member (16) and fixed to the lower fixing portion (18) of the resilient sleeve member (16), and an actuator (46) mounted on the upper sealing portion (22) of the resilient sleeve member (16). The valve stem (28) includes a hollow cylindrical body (38), an end cap (32) closing an upper end of the hollow cylindrical body (38), and one or more apertures (34) arranged around the circumference of the hollow cylindrical body (38) adjacent to the end cap (32). The apertures (34) are covered by the upper sealing portion (22) of the resilient sleeve member (16) in a closed position of the valve assembly (10).

Abstract: A closure device which includes a fluid chamber containing an additive such as a liquid and a housing having a plug member. The cap member is provided with a primary engagement means, such as an internal thread, which engages with a corresponding primary engagement means provided on the housing, such as an external thread, to allow the cap member to be lifted relative to the housing from a closed position in which the plug member closes a bottom aperture and a spout aperture in the fluid chamber, through a first open position in which the plug member is at least partially withdrawn from the bottom aperture while still closing the spout aperture, thereby allowing the additive to pass from the fluid chamber, and to a second open position in which the spout aperture is at least partially open.

Abstract: A closure device which includes a fluid chamber containing an additive such as a liquid which can be introduced and mixed into a liquid in a container by operation of the closure device. The closure device includes a cap member having a fluid chamber and a housing having a plug member. The cap member may have a cam or follower surface on a lower surface of the cap top wall, which engages with a corresponding cam or follower surface on an upper surface of the housing, to allow the cap member to be lifted relative to the housing from a closed position in which the plug member closes an aperture in the fluid chamber to an open position in which the plug member is at least partially withdrawn from the aperture, thereby allowing the additive to pass from the fluid chamber to the liquid in the bottle.

Abstract: A dispensing apparatus for dispensing a product from a container is disclosed. The dispenser includes a product chamber within the container; a valve adjacent to the product chamber; a hinge assembly secured to the opening of the container and to which is connected a nozzle assembly; and a lever attached by means of the hinge assembly. The nozzle assembly includes an actuator portion provided with a lever bearing surface which co-operates with a bearing portion on the lever such that operation of the lever causes movement of the actuator portion to open the valve and permit flow of the product out of the container. The nozzle assembly includes at least one dog tooth and the hinge assembly includes at least one slot, such that the valve can open only when the dog tooth is aligned with the slot.