Ball-point pen with rearward tip-linked ink capillary and air channel

摘要

The front part or tip (22) of the ink feed (20) has a capillary ink-holding indentation (32,33) and the air channel (29) in section (23) connects to a further channel (31) in another section (24) to the rear. The front section can have several indentations all linked to the main ink feed channel (25) as again is the indentation in the tip (21) also linked to channel. The radially outer part of the ink feed channel is enlarged in sections to form an air feed channel (27), with the capillary-ink channel running axi-parallel through tip and subsequent sections and with parallel sidewalls, as compared with the bottom (26) of the channel which slopes in an acute angle via its sides, to give a flat bottom and angle 45 deg with the sides.