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:
Nov. 24, 2009
Filed:
Dec. 29, 2004
Applicant:
Carlo Carbonini, Villastanza di Parabiago, IT;
Inventor:
Carlo Carbonini, Villastanza di Parabiago, IT;
Assignee:
Rancilio Macchine per Caffe' S.p.A., Villastanza di Parabiago (MI), IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47J 31/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A piston () of an automatic machine for infusion of beverages, such as coffee and the like, the piston having a piston head () divided into two parts connected together and axially movable relative to each other, an annular gasket () being housed between those parts and radially expanding when an axially directed thrust such as to make said two piston parts () approach each other is applied onto said piston (), wherein the elastic resistance of said gasket () keeps said two piston parts () spaced apart when no axial thrust is applied onto the piston.