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:
Sep. 16, 2014
Filed:
Mar. 23, 2010
Hyun-son Yoon, Incheon, KR;
Hyun-Son Yoon, Incheon, KR;
Morris Corporation, Incheon-shi, KR;
Abstract
A writing implement, with retractable ends, an upper shaft and lower shaft coupled together and rotatable relative to each other, a cartridge and an eraser holder in an intermediate connection member are simultaneously movable in upward and downward directions. The cartridge having a writing nib; the connection member having a slit; the lower shaft coupled to the connection member, a nib hole for extending/retracting the nib therethrough; the upper shaft having a thread enabling the cartridge to move with the integrated rotation of the connection member and lower shaft; a cam coupled to the upper shaft, having an inner wall with a protrusion; an eraser holder engages the protrusion and slit and rotates in upward and downward directions with the rotation of the connection member and lower shaft; and a ball shutter in the lower shaft to open/shut the nib hole by means of the vertical sliding of the cartridge.