Writing instrument including stick-shaped material...

Details Writing instrument including stick-shaped material... Writing instrument including stick-shaped material...

2007-10-23

2007-10-23

Walczak, David J. (Department: 3751)

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including holder

C401S092000, C401S031000, C401S019000

Reexamination Certificate

active

11165327

ABSTRACT:
A writing instrument including a stick-shaped material propelling mechanism which is capable of propelling a stick-shaped material without relatively rotating the stick-shaped material with a small number of components is provided.The writing instrument includes an outer barrel, a lead feeding mechanism disposed in the outer barrel, and a stick-shaped material propelling mechanism connected to a rear portion of the lead feeding mechanism, a female thread is formed on an inner peripheral surface of a rear portion of a lead tank of the lead feeding mechanism. The stick-shaped material propelling mechanism includes a knock cap connected to the lead feeding mechanism to be relatively rotatable, and a stick-shaped material bearer which is slidable and unrotatable relative to the knock cap and for holding a stick-shaped material, and a male thread which is screwed into the female thread of the lead tank is integrally formed at the stick-shaped bearer.

REFERENCES:
patent: 3072101 (1963-01-01), Kovacs
patent: 5662425 (1997-09-01), Mitsuya
patent: 6254295 (2001-07-01), Cheng
patent: 4-25499 (1992-01-01), None
patent: 5-45513 (1993-11-01), None

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