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:
Jan. 22, 2002
Filed:
Dec. 15, 2000
Yosuke Mito, Yokohama, JP;
Kazuhiko Furukawa, Kanagawa, JP;
Mitsubishi Pencil Kabushiki Kaisha, Tokyo, JP;
Abstract
A direct-feed type writing implement includes: a point assembly having a writing point at the tip thereof; an ink tank directly storing a relatively low viscosity ink having a viscosity of 2 to 100 mPa·S at room temperature; an ink collector for adjusting the internal pressure in the ink tank by utilizing capillarity; a feeder including a center core, for feeding ink from the ink tank to the writing point; a duct pipe connecting the ink collector and the ink tank; and a duct pipe ink storage portion provided for the duct pipe. In another embodiment, ink is supplied to the center core as the ink feeder only through the duct pipe.