Ink writing implement

Details Ink writing implement Ink writing implement

1982-02-08

1984-07-24

Bratlie, Steven A.

Coating implements with material supply

Including stylus

401259, B43K 516, B43K 106, B43K 110

Patent

active

044615914

ABSTRACT:
An ink writing implement comprises a retainer for a floating weight arranged in the axial bore of a retaining box and having an annular planar surface facing a planar shoulder therein. A venting groove and capillary grooves pierce the surface and the retainer includes a spiral ink flow path along the circumference thereof. A floating weight is guided for axial movement in the axial bore of the retainer and the planar shoulder forms an abutment for a front end of the floating weight. The retainer bore is long enough to accommodate the axial movement of the floating weight and this weight defines an axially extending venting channel with the retainer. A front retainer end is cylindrically recessed and comprises a surface defining an ink flow control path in the axial bore of the retaining box, which connects the venting groove and channel with the spiral ink flow path. Because of the length of the retainer in the retaining box, the height of the ink column in the box is considerably shortened so that the capillary forces required for the control of the ink flow may be relatively small.

REFERENCES:
patent: 3442597 (1969-05-01), Hebborn et al.
patent: 4390299 (1983-06-01), Mutschler

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