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. 16, 2002
Filed:
Jul. 27, 2001
Applicant:
Inventors:
Rebecca A. Lawson, Florence, SC (US);
James W. Lowry, Florence, SC (US);
Keith R. Rea, Florence, SC (US);
Assignee:
Sonoco Development, Inc., Hartsville, SC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/775 ;
U.S. Cl.
CPC ...
B41J 2/775 ;
Abstract
An improved plunger for a lithographic printing ink cartridge prevents air entrapment between the plunger and the ink when the plunger is pressed into the ink during cartridge assembly. The plunger bottom portion has a positive radius and a textured surface that facilitates the flow of air away from the center of the plunger toward the cartridge sidewall as the plunger is pressed into the ink.