| 摘要 |
A multiple bit screwdriver comprising a plurality of tool bits, an elongate member defining an axial passage adapted to receive said bits therein positioned tip to end so that the foremost bit operably extends from the passage and is rotatable with the elongate member, first and second retainers connected to the elongate member near each end of the passage and extending radially inward into the passage to engage frictionally the foremost and last bits to prevent said bits from falling out of either end, and a motion restricting member within the passage having an expandable engagement portion that cooperates with at least one tool bit to permit the movement of bits within the passage in one direction only. The engagement portion is expandable in response a tool bit being pushed therethrough in one direction, but resists expanding when a tool bit is being pushed in the opposite direction.
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