| 摘要 |
A writing instrument (10) which includes a body having a barrel portion (12) and a replaceable cartridge (20) housed within the barrel portion (12). A retractor mechanism (18) is removably maintained in a rear end of the barrel portion (12) and is adapted for axial movement between a retracted position (12). The instrument further includes structure (64) for biasing the replaceable cartridge (20) toward the rear end of the barrel portion (12) and for maintaining the retractor mechanism (18) in the protracted position by imparting a moment, or force, on the retractor mechanism (18) acting relative to the axial centerline of the barrel portion (12).
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