Reservoir cartridge for writing pens

Coating implements with material supply – Including rupturable means or sealed-cartridge receiver – Sealed-cartridge receiver with flow-establishing means

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Details

401153, 401157, 215 11E, 222327, 2223865, B43K 514

Patent

active

042170583

ABSTRACT:
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.

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