Koh-I-Noor Rapidograph, Inc.

Mesne Koh-I-Noor Rapidograph, Inc.

Werner Zuchner

Gerold Anderka

Walter Jozat

Klaus Straszewski

Hans-Joachim Ritter

Jochen Rauterberg

The invention refers to an improved writing fluid cartridge or writing fluid tank with a connection section at the front end for attachment to a writer, especially a tube writer, wherein the cartridge is divided into at least two sealably separate compartments, one of which having an ink capacity equal to substantially the ink capacity of the writer body.

Writing fluid cartridge

A disposable ink reservoir cartridge which is attachable to tubular writing pens of the stylographic type embodying a pressure compensating chamber. The reservoir cartridge is characterized by its axial deformability, such that the free volume of the reservoir may be reduced, as ink flows from the reservoir into the pressure compensating chamber during pen use. The reduction in free volume of the reservoir eliminates available air space and, thereby, avoids the deleterious effects of air pressure changes upon the ink or writing fluid, as the reservoir is depleted.

Reservoir cartridge for writing pens

A sealing element for an automatic drafting pen with a tubular tip wherein a reciprocating horizontal actuating means that acts through a linkage operates a horizontal slide that in one position permits the pen to contact the drafting surface and in a second position seals the pen with the horizontal slide.

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Hamburg, Germany

Werner Zuchner