Writing or drafting instrument with exchangeable writing medium

Details Writing or drafting instrument with exchangeable writing medium Writing or drafting instrument with exchangeable writing medium

1994-07-19

1996-07-09

Bratlie, Steven A.

Coating implements with material supply

Including rupturable means or sealed-cartridge receiver

Sealed-cartridge receiver with flow-establishing means

401134, 401135, B43K 514, B43K 702, B43K 818

Patent

active

055338240

ABSTRACT:
A writing or drafting instrument includes a writing medium container in the form of an exchangeable cartridge and a push member which is axially movable in the shaft of the instrument and is used as an ejector. The cartridge is held in the shaft by a clamping action or a positive locking action. The push member and shaft form a structural group in which the push member and the shaft are movable relative to each other. The push member acts on the cartridge at least during the ejection of the cartridge. The writing tip is exchangeably fastened in the cartridge or in the shaft.

REFERENCES:
patent: 2105600 (1938-01-01), Johndohl et al.
patent: 2409869 (1946-10-01), Kelley
patent: 3361516 (1968-01-01), Rigondaud
patent: 3399019 (1968-08-01), Koelichen
patent: 4240759 (1980-12-01), Matsumoto
patent: 4990012 (1991-02-01), Groetsch et al.

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