Injection unit having a resilient suspension device for the group head of a so-called espresso coffee machine
US9655470B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2012 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Jan 23, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/4464
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The invention relates to an injection unit (1) for an espresso coffee machine including a stationary mechanical upper block (2) having a central projection (4) which forms a hot-water dispenser (7) and to which a removable portion, referred to as the group head (8), is attached, the inner surface of the group head having a cavity (22) in which the portafilter (9) is mounted, said portafilter comprising an operating handle (10) and a recess for holding a basket (11) containing the coffee grounds for preparing espresso coffee, characterized in that the group head (8) is attached to the mechanical block (2) of the injection unit (1) via a linking device having a resilient effect, and in that the seal (23) surrounding the dispenser (7) engages with the inner periphery of the basket (11). The invention is useful for manufacturers of espresso coffee machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.