Refillable soft lead pencil

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6149331
SERIAL NO

09051044

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A pencil which has a tip and which dispenses a soft mass in use includes a sheath having front and back ends; a push rod positioned coxially within the sheath, having a sheath-side end, and being secured by its sheath-side end to the back end of the sheath in an axial direction; an elongate soft mass insert position coxially with the sheath; a front part which is a sleeve that envelopes the soft mass insert over at least a portion of its length, which is positioned coxially with the sheath and accommodated at least in part within the sheath, and which operates jointly with the sheath in the manner of a helical gear so that the fromt part retracts into the sheath by turning the front part relative to the sheath; and a soft mass insert holder which is connected to the front part so that it is engaged in the turning moment of the front part, which holds the elongate soft mass insert by one end thereof, which is rotatably secured to the push rod, and which is immovably secured to the push rod in the axial direction.

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Patent Owner(s)

Patent OwnerAddress
A W FABER-CASTELL UNTERNEHMENSVERWALTUNG GMBH & COGERMAN SHI TAIYIN STEIN BAVARIA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Raps, Juergen Hof, DE 2 9
Zahn, Werner Geroldsgruen, DE 10 38

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