Device with co-molded closure, one-way valve and variable-volume storage chamber, and related method
US8998034B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 2010 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Jul 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7837
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device includes a first part having a co-molded first support, valve cover and elastic actuator, and a second part having an injection molded second support, valve seat, and variable-volume storage chamber pre-form. The pre-form is blow molded into a flexible pouch defining the variable-volume storage chamber. The one-way valve includes a semi-annular, curvilinear, relatively rigid valve seat defining axially-extending, opposing first marginal portions, and an axially-extending first mid-portion angularly extending between the opposing first marginal portions. A flexible valve member is superimposed on the valve seat and defines axially-extending, opposing second marginal portions fixedly secured on or adjacent to respective first marginal portions of the valve seat, and an axially-extending second mid-portion angularly extending between the opposing first marginal portions and superimposed onto the first mid-portion of the valve seat. The flexible valve cover and valve seat form a normally closed axially and angularly extending valve seam therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.