Reusable coffee filter
US4231876A · kind A · utility
22Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1979 |
| Grant date | Nov 4, 1980 |
| Priority date | — |
| Expiry date | Feb 15, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/06
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A coffee filter which may be used repeatedly is described. It comprises a funnel-shaped housing having an outlet port at the lower end. A filter of similar shape is fitted into the housing and is so dimensioned as to provide a clearance of between 0.2 to 1.5 mm. The filtering element is so dimensioned that the upper rim thereof forms a seal with the inner wall of the housing. The outlet port of the housing has a restriction in order to assume a continuous flow of the filtrate between the funnel-shaped housing and the filtering element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.