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:
Feb. 05, 2008
Filed:
Sep. 29, 2004
Naoki Katayama, Kariya, JP;
Bing Wang, Nagoya, JP;
Naoki Katayama, Kariya, JP;
Bing Wang, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An ink cartridge has an ink tank for reserving ink and a joint connected to the ink tank, the joint including an outer frame having an ink channel, and a sealing member made of an elastic material and received in the outer frame, the sealing member having a cylindrical portion and a valve portion. When an ink supply pipe having an ink inlet is inserted into the cylindrical portion, the cylindrical portion abuts against an outer circumference of the ink supply pipe on an ink flow downstream side of the ink supply pipe with respect to the ink inlet. The valve portion leaves the outer frame so as to open the ink channel when the ink supply pipe is inserted into the cylindrical portion, and when the ink supply pipe is not inserted into the cylindrical portion, the valve portion abuts against the outer frame to close the ink channel.