公开(公告)号：USRE30659E

公开(公告)日：1981-06-30

申请号：US123508

申请日：1980-02-22

申请人： Nobuyuki Otake ,  Kozo Ando ,  Hironobu Hori ,  Ykinori Sato

发明人： Nobuyuki Otake ,  Kozo Ando ,  Hironobu Hori ,  Ykinori Sato

IPC分类号： B43K1/12 ,  B43K7/10

CPC分类号： B43K7/105 ,  B43K1/12

摘要： Pen point for writing instruments which is a rod-shaped wick composed of synthetic resin filaments and in which narrow slots defined by said filaments extend longitudinally in said wick and form ink passageways, comprising in the cross-section(a) a circular portion to form the outer periphery portion of the pen point,(b) a plurality of stem portions projecting inwardly from the inner periphery portion of said circular portion and being arranged at a moderate distance with one another,(c) branches projecting laterally from at least two stem portions, said stem portions and branch portions being constituted with a plurality of connected monofilaments, each having same or different diameter,(d) standing tree-formed projections consisting of said stem portions and said branch portions, which are arranged in a fold axis symmetry against the center of the pen point, and(e) the above described projections being mutually crossed or the above described projections and the above described stem portions are crossed to form narrow slots for conveying ink.