Fluid container and airless fluid dispensing system
US8136703B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Jul 25, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1023
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A fluid container according to the present invention includes a container body having upper and lower openings, and further having a shoulder member and a side wall which extend between the upper and lower openings. The fluid container also includes a spacer abutting on the shoulder member of the container body, and a slidable valve slidably moving along an inner surface of the side wall of the container body in a hermetically sealed manner. The slidable valve defines a container space for holding fluid, in conjunction with the side wall of the container body. Further, a bottom cover is provided for covering across the lower opening of the container body. The spacer and the slidable valve include a spacer surface and a valve surface, respectively, which oppose to each other and are inclined at tilt angles between 5 and 30 degrees relative to a horizontal surface. Therefore, an airless fluid dispensing system using the fluid container securely prevents a small air bubble from being trapped in the container body when filled in with the fluid, thereby to dispense a constant dosage without requiring undesired pumping actions prior to actual use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.