Brewing device for a coffee machine
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United States of America Patent
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Jul 15, 2014
Grant Date -
Dec 9, 2010
app pub date -
Oct 8, 2008
filing date -
Oct 29, 2007
priority date (Note) -
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status (Latency Note)
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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.
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