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. 31, 2012
Filed:
Aug. 01, 2007
Alfredo Vanni, Chieri, IT;
Alfredo Vanni, Chieri, IT;
Luigi Lavazza S.p.A., Turin, IT;
Abstract
A capsule () sealed without an internal filter. The capsule includes a cup-shaped body () with an outwardly projecting flange (), and a flexible lid () welded to the flange () to define with the latter a sealed chamber () which is impermeable to oxygen and moisture and contains a quantity of granular material (). The granular material () is first compressed inside the chamber () in a direction perpendicular to the plane containing the flange (), with a compressive load preferably of between 2 and 50 Kg per cmof the average cross-sectional area of the chamber (), so as to form a compact tablet () of the material. A vacuum is formed inside the chamber () to a degree such that the lid () adheres to the upper surface of the tablet ().