发明名称 MECHANICAL PENCIL
摘要 In a mechanical pencil, the dispersion range of the diameter of a lead is allowable to a certain extent, but if by chance a lead having the maximum diameter is used the lead may not be delivered. This is because there is exceeded the allowable range of the elastic deformation of an elastic thin film, namely, a lead holding member. The present invention provides a mechanical pencil including the lead holding member disposed in the neighborhood of the tip of a shaft tube, in which the exterior shape of the lead holding member is formed to be slightly smaller than the interior shape of the shaft tube in which the lead holding member is disposed, and an inner step portion for preventing the dropping of the lead holding member from the shaft tube is disposed in the front portion of the lead holding member. By this configuration, the lead can be held without fail, and a satisfactory operation of the lead delivery can be attained. <IMAGE>
申请公布号 EP1431066(A1) 申请公布日期 2004.06.23
申请号 EP20020768007 申请日期 2002.09.24
申请人 PENTEL KABUSHIKI KAISHA 发明人 MARUYAMA, SHIGEKI;SIGEMORI, MASAKI;KODAMA, HIDETOSHI
分类号 B43K21/00;B43K21/16;B43K21/22;B43K29/02;(IPC1-7):B43K21/00 主分类号 B43K21/00
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