Espresso machine and method of making espresso by using said machine
US5133983A · kind A · utility
9Cited by
1References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Mar 23, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/3614
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An espresso machine is proposed which comprises an espresso-making filter (10) capable of being filled with coffee powder and having a sieve (11, 12) with openings (13) of defined cross-sections for retaining the coffee powder when espresso is being made. Means are provided for varying the cross-sections of the openings (13). These means are preferably configured as needles (21) divided along their lengths into at least two portions of different cross-sections so that the openings (13) formed in the sieve (11, 12) can be closed to a greater or lesser extent depending on the penetration depth of the needles (21).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.