Coffee machine
US4353293A · kind A · utility
38Cited by
6References
7Claims
0Family size
Inventor
Key dates
| Filing date | May 7, 1981 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | May 7, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/36
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An espresso machine has a coffee brewing chamber, a water reservoir and a water heater. Two electrical pumps are provided, one capable of supplying a smaller quantity of water from the reservoir via the heater to the brewing chamber so as to make a regular-strength coffee beverage, and the other capable of supplying a considerably larger quantity of water from the reservoir via the heater to the brewing chamber, so as to make a weaker-strength coffee beverage from an identical quantity of coffee. A selector at the outside of the machine allows a user to select which one of the pumps he wishes to energize.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.