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:
Dec. 14, 2010
Filed:
Apr. 01, 2009
Albert A. Andrews, Cleveland, TN (US);
Robert D. Freeman, Hixson, TN (US);
Otis Neil Taylor, Cleveland, TN (US);
David Leon Watson, Riceville, TN (US);
Eric V. Ball, Ocoee, TN (US);
Albert A. Andrews, Cleveland, TN (US);
Robert D. Freeman, Hixson, TN (US);
Otis Neil Taylor, Cleveland, TN (US);
David Leon Watson, Riceville, TN (US);
Eric V. Ball, Ocoee, TN (US);
The Gillette Company, Boston, MA (US);
Abstract
A method of compacting material such as but not limited to cathode material for electrochemical cells. A mixture is inserted into a die cavity and the mixture is compacted into a disk shape by the action of a first plunger pressing down on the material and a second plunger pressing upwardly on the material. Flashing of material during ejection of the disk from the die is prevented by fitting a polymeric sleeve around the outer surface of the first plunger. The sleeve flexes to bulge outwardly and does not enter the die cavity during compaction of material and returns to its original position during ejection of the compacted disk from the die. Contact between the disk and sleeve prevents flashing during ejection. Alternatively, a polymeric seal ring is placed around the outer surface of the first plunger. The disk presses against the seal ring preventing flashing of material during ejection.