Combination ventilation unit and seal for spray heads of spray bottles
US5971221A · kind A · utility
Inventor
Key dates
| Filing date | Oct 1, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Oct 1, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D51/1622
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a closing device (1) for the removal of solid and/or liquid substances from housings, containers, bottles, or the like, which can be filled with a liquid or solid material, consisting of an air intake element (7), which in a manner allowing detachment closes an auxiliary opening of the housing, container, bottle, or the like, and a suction pipe connection (2) and/or a suction pipe (6), which traverse(s) this air intake element (7), whereby the air intake element (7) includes a pressure equalizing device having at least one membrane (5) made of a material which is impervious to liquids and/or solids but permeable by gases, and that the suction pipe connection (2) or suction pipe (6) is joined at its exterior wall to the air intake element (7) as a tight seal against gas and/or liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.