The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2014
Filed:
Oct. 08, 2008
Christoph Wüthrich, Wiggiswil, CH;
Christoph Wüthrich, Wiggiswil, CH;
Schaerer AG, Zuchwill, CH;
Abstract
The invention relates to a brewing device () for a coffee machine, including a brewing cylinder () having a cylindrical bore and pistons, such that the brewing cylinder () can be closed off to form a brewing chamber. The brewing cylinder () and the pistons are held in a frame, and can be displaced relative to each other and driven by a spindle (). A threaded part () acts together with the spindle, and is disposed on a carrier () attached to the brewing cylinder (). A ground coffee feed device is provided for filling the brewing chamber with ground coffee, and a stripping element () serves to strip off the residual coffee grounds remaining on the lower piston () after the brewing process. A supporting structure can prevent the spindle from being able to bend under load during the brewing process.