Crown Packaging Technology, Inc.

Crown Cork & Seal Technologies Corporation

Metal Box Corporation

Martin John Watson

Brian Mark Fields

Andrew Robert Lockley

Christopher Paul Ramsey

Garry Richard Chant

Eleanor Rachel Ann Hyde

Thomas G Mann, Deceased

Eleanor Rachel Hyde

Reinhold Karl Jaeger-Waldau

Mark T Ashbolt

A full aperture beverage end has a center panel, a countersink surrounding the center panel, a main score arranged in proximity to the countersink to define a removable aperture panel and a vent score. The beverage end is adapted for use with products that are pressurized to over 30 psi (200 kPa) when opened, and during opening the vent score is adapted to sever first, controlling the pressure differential between the external surface and internal surface of the center panel, thereby allowing the main score to tear in a controlled and reliable manner.

Full aperture beverage end

A can end having a countersink bead, an inclined chuck wall and a strong seam, resists distortion from its circular profile when subjected to thermal processing or when packaging carbonated beverages. This high hoop strength affects the manner in which the can end ultimately fails when placed under extreme abuse conditions, even if buckle pressure performance is within industry specified standards. The can end of the invention has control features introduced which control the failure mode while maintaining specified buckle pressure performance. In one embodiment, the can end has a two part wall and a control feature that comprises expansion of the countersink bead to act as a trigger for local peaking, together with a groove in the chuck wall which prevents the peaking force from being concentrated at a single point which could result in leaking by the production of a pin hole.

Can end

A can end having a countersink bead, an inclined chuck wall and a strong seam, resists distortion from its circular profile when subjected to thermal processing or when packaging carbonated beverages. This high hoop strength affects the manner in which the can end ultimately fails when placed under extreme abuse conditions, even if buckle pressure performance is within industry specified standards. The can end of the invention has control features introduced which control the failure mode whilst maintaining specified buckle pressure performance. In one embodiment, the can end has a two part wall and a control feature that comprises expansion of the countersink bead to act as a trigger for local peaking, together with a groove in the chuck wall which prevents the peaking force from being concentrated at a single point which could result in leaking by the production of a pin hole.

Full aperture open beverage can

A can end having a countersink bead, an inclined chuck wall and a strong seam, resists distortion from its circular profile when subjected to thermal processing or when packaging carbonated beverages. This high hoop strength affects the manner in which the can end ultimately fails when placed under extreme abuse conditions, even if buckle pressure performance is within industry specified standards. The can end of the invention has control features introduced which control the failure mode whilst maintaining specified buckle pressure performance. In one embodiment, the control feature comprises expansion of the countersink bead to act as a trigger for local peaking, together with a groove in the chuck wall which prevents the peaking force from being concentrated at a single point which could result in leaking by the production of a pin hole.

A closure for a container, which has a self-closing valve having a cup-shaped valve head () with a dispensing aperture defined therein. In response to increased pressure in the container, the head of the self-closing valve to flatten and partially invert, thereby opening the dispensing aperture (). The closure () includes an energizing ring () arrange surrounding the valve head () and adapted to restrict the radial expansion thereof. The position and design of the energizing ring () relative to the valve head () may be adjusted to affect the performance of the valve allowing a single valve design to be used for a number of different applications. Alternatively the energizing ring () may be used to improve the performance of a particular design of valve.

Energizing ring for a closure membrane

A dispensing pump for liquid or pasty products comprising a housing ( ), a piston ( ) arranged to move telescopically within the housing between rest and activated positions and a plastics spring ( ) arranged to return the piston from its activated to its rest position. The plastics spring has a folded, concertina configuration to provide the required return force for the piston. The spring also has end plates ( ), which can be adapted increased functionality. The whole pump may be moulded from a plastics material and has few component parts.

Dispensing pump

Apparatus for trimming a flanged end of a tubular article

For making open-ended thermoplastic tubular articles, which are dimensionally stable up to elevated temperatures, an open-ended polymer tube is placed between a fixed, heated external mould and a cooled mandrel, which is vertically displaceable relative to the mould, both the ends of the polymer tube being clamped to restrain the tube axially. The polymer tube is radially expanded into contact with the hot mould and maintained in contact for a time sufficient to ensure dimensional stability, and then allowed to shrink back into contact with the cooled mandrel, which is maintained at a temperature below the glass transistion temperature of the polymer. The resulting article is then stripped from the mandrel.

Growing community of inventors

Wantage, United Kingdom

Martin John Watson