Coffee brewer filtration device
US5190653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1990 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Oct 30, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/184
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reusable filtration element for a coffee brewer has a microscopic arrangement of holes which permit coffee beverage to pass through while turbidity and sediment causing solids are effectively removed. The holes are preferably from 12 to 60 microns across and provide from 5 to 30 % open area in the filter element. In one preferred embodiment, the holes are circular, arranged in rows such that intersecting rows form an angle of 60.degree., and preferably taper from top to bottom. A preferred filtration element is preferably formed by photoetching stainless steel foil. The filtration element is preferably positioned over a foraminous support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.