Apparatus for preparing hot beverages
US4947738A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1988 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Aug 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86863
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Apparatus of this type, for instance Espresso machines, comprising a plurality of preparation devices such as a coffee filter, a foaming nozzle or the like, are equipped with a multiple-way valve operable to supply hot water or hot steam to the various preparation devices. Conventional valves of this type are not sufficiently resistant against the corrosive action of the hot and frequently also aggressive water. In the apparatus according to the invention, the multiple-way valve (5) is formed as a ceramic valve comprising a number of ceramic discs (11 to 13) provided with distributor passages (14, 15, 16, 17, 23) and mounted in sealing surface contact for displacement relative to one another. The apparatus is suitable for the preparation of hot beverages, particularly Espresso.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.