The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2005
Filed:
Jul. 19, 2001
Christopher Paul Ramsey, Oxfordshire, GB;
Martin John Watson, Oxfordshire, GB;
Christopher Paul Ramsey, Oxfordshire, GB;
Martin John Watson, Oxfordshire, GB;
Crown Cork & Seal Technologies Corporation, Alsip, IL (US);
Abstract
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.