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.:

US 7988266 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 02, 2011

Filed:

Mar. 26, 2007
Applicants:

Qingguo Xiao, Zhuhai, CN;

Benyou Jin, Zhuhai, CN;

Leung Mui Ho, Zhuhai, CN;

Yonggang He, Zhuhai, CN;

Yongzhong Tian, Zhuhai, CN;

Inventors:

Qingguo Xiao, Zhuhai, CN;

Benyou Jin, Zhuhai, CN;

Leung Mui Ho, Zhuhai, CN;

Yonggang He, Zhuhai, CN;

Yongzhong Tian, Zhuhai, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
Abstract

A valve core of an ink cartridge includes an elastic valve sheet having an inner portion and an outer portion. The outer portion extends outwards from the inner portion and protrudes towards an upstream side of the valve core. The outer portion is adapted to sealingly engage and disengage with a valve seat in which the valve core is mounted.


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Xiao, Qingguo. (2011). Ink cartridge for inkjet printer (U.S. Patent No. 7988266). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7988266

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