Brewing device for a coffee machine
US8776672B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 2008 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | May 23, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/3619
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The invention relates to a brewing device (1) for a coffee machine, including a brewing cylinder (6) having a cylindrical bore and pistons, such that the brewing cylinder (6) can be closed off to form a brewing chamber. The brewing cylinder (6) and the pistons are held in a frame, and can be displaced relative to each other and driven by a spindle (9). A threaded part (7a) acts together with the spindle, and is disposed on a carrier (7) attached to the brewing cylinder (6). A ground coffee feed device is provided for filling the brewing chamber with ground coffee, and a stripping element (19) serves to strip off the residual coffee grounds remaining on the lower piston (4) after the brewing process. A supporting structure can prevent the spindle from being able to bend under load during the brewing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.