Lead holding structure of mechanical pencil

Details Lead holding structure of mechanical pencil Lead holding structure of mechanical pencil

2005-03-10

2008-11-18

Walczak, David J (Department: 3751)

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including holder

C401S092000

Reexamination Certificate

active

07452148

ABSTRACT:
A lead holding structure of a mechanical pencil where a predetermined lead holding force is maintained so that a lead does not move even if a writing pressure is repeatedly applied to the lead and where a so-called biting-off of a lead (break) is prevented without damaging the lead in repeatedly sending forward and backward operations.

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International Search Report of PCT/JP2005/004242, date of mailing Jun. 21, 2005.

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