发明申请
US20060182489A1 Writing implement 有权
书写工具

  • 专利标题: Writing implement
  • 专利标题(中): 书写工具
  • 申请号: US10569283
    申请日: 2004-07-21
  • 公开(公告)号: US20060182489A1
    公开(公告)日: 2006-08-17
  • 发明人: Takeshi Kobayashi
  • 申请人: Takeshi Kobayashi
  • 优先权: JP2003-300225 20030825
  • 国际申请: PCT/JP04/10326 WO 20040721
  • 主分类号: B43M11/02
  • IPC分类号: B43M11/02
Writing implement
摘要:
A writing implement, wherein elements forming a reverse flow prevention mechanism are formed in rather simple shapes and assembly process for the reverse flow prevention mechanism is rather simplified. The reverse flow prevention mechanism (19) comprises a valve chamber (54b), an inflow port (55) opened to the ink storage part (16) side of the valve chamber (54b), an outflow port (56) opened to the writing tip (17) side of the valve chamber (54b), a valve element (57) stored in the valve chamber (54b), a restricting body (58) stored in the valve chamber (54b) at a position on the outflow port (56) side of the valve element (57), and a valve seat (54c) formed around the inflow port (55). When the writing tip (17) is faced upward, the inflow port (55) is closed by the valve element (57), and when faced downward, the valve element (57) is allowed to touch the restricting body (58) and does not reach the outflow port (56).
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