Coating implements with material supply – Solid material for rubbing contact or support therefor – Combined
Patent
1992-08-04
1993-08-17
DeMille, Danton D.
Coating implements with material supply
Solid material for rubbing contact or support therefor
Combined
401 19, 401 31, 401 78, 15429, 15433, B43K 2902
Patent
active
052362701
ABSTRACT:
This invention is to a writing tool such as mechanical pencil or a ballpoint pen in which a writing shaft having a head member is inserted in an outer sleeve in such a manner that the head member projects from the outer sleeve. A stair or step and a spiral groove are provided on the forward inner surface and the rearward inner surface of a tubular cap, respectively, with an inside diameter of the rear part of the spiral groove being larger. A bearing part is brought into contact with a lead tank provided inside a forward art of the tubular part so that the forward part of the outer sleeve is movable in the axial direction and is locked in the turning direction against a rearward inner surface of the outer sleeve. The rearward part of the tubular body is provided with a slit, holding pieces of a stick-shaped object holder slidably inserted in said slit. A stick-shaped object is held by the holding pieces, and the projection is provided on each holder engaged with the spiral groove of the tubular cap.
REFERENCES:
patent: 1461437 (1923-07-01), Billman
patent: 2173361 (1939-09-01), Gorrell
patent: 2198335 (1940-04-01), Gaimari
patent: 2222415 (1940-11-01), Landwehr
patent: 2287894 (1942-06-01), Lynn
patent: 2525229 (1950-10-01), Lynn
patent: 4904101 (1990-02-01), Petterson
Kageyama Shuhei
Kageyama Toshihiko
Mitsuya Yoshihide
Nakazato Youichi
DeMille Danton D.
Kotobuki & Co. Ltd.
O'Reilly David
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