WRITING INSTRUMENT AND INK CARTRIDGE

Title:

WRITING INSTRUMENT AND INK CARTRIDGE

Document Type and Number:

WIPO Patent Application WO/2015/041202

Kind Code:

A1

Abstract:

　Provided is an exceptionally convenient writing instrument which, despite using a replaceable ink cartridge having a stopper body opened by pressing, can minimize the inadvertent leakage of ink prone to occur when the spent cartridge container is withdrawn, thus making cartridge replacement highly easy. The writing instrument is provided with: a replaceable ink cartridge comprising a bottomed cylindrical container which is open at the front end and closed at the back end, and a stopper body which fits against the inside peripheral surface of the opening of the container; and a protruding part which inserts into the opening of the container and presses the stopper body rearward, opening the ink cartridge. When being pressed to open, the protruding part and the stopper body interconnect, and during cartridge replacement, the protruding part and the stopper body disconnect, and the stopper body refastens into the container opening.

Inventors:

HOSHINO TAKANORI (JP)

Application Number:

PCT/JP2014/074365

Publication Date:

March 26, 2015

Filing Date:

September 16, 2014

Export Citation:

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Assignee:

PILOT CORP (JP)

International Classes:

B43K5/14; B43K8/03

Foreign References:

US2045774A	1936-06-30
JPS3721906Y1
JPH064943Y2	1994-02-09
JPH08216583A	1996-08-27
JP2001287494A	2001-10-16
JPH08216583A	1996-08-27
JPH064943U	1994-01-21
JPS555341U	1980-01-14

Other References: