Double shut-off fluid dispenser element

US4700744A · kind A · utility

Inventors

• Christopher C. Rutter · Oakland, US
• Peter Thomsen · Quickborn, DE

Key dates

• Filing date: Mar 10, 1986
• Grant date: Oct 20, 1987
• Expiry date: Mar 10, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/87957
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a bag-in-box fluid dispensing system including a bag fitment sealed over an opening in the fluid bag, a normally closed valved intermediate element sealed in the bag fitment, and a normally closed valved dispenser removably coupled to the valved intermediate element, the intercoupling of the intermediate element and the valved dispenser causing the valves in each unit to open for the passage of fluid from the fluid bag, an improved intermediate element having but two components, the improved element including a housing having a long skirt for passing through the bag fitment and into the fluid bag to prevent blocking of the bag opening, a valve set formed by the deformation of a circular opening in the end of the housing, and a normally closed axially movable valve member for mating with the valve seat and having a valve spring bias provided by the deformation of a novel hemispherical resilient member latched in the bore of the housing.