Nib for writing felt pen
AssigneeSociete BIC
InventorsEtienne Roudaut, Arnaud Bez
Life of this patent
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Abstract
A nib for a valve-free free ink writing felt pen including a first end configured to deliver ink to a writing support and second end, opposite the first end, configured to be inserted in a nib receiving part of the valve-free free ink writing felt pen, the first end and the second end defining an axial direction of the nib, the nib including a main body made of porous hydrophilic material and including one or more insert made of porous hydrophobic material, the one or more insert being configured to allow intake of air from the outside of a free ink tank of the valve-free free ink writing felt pen into the free ink tank and avoid ink leakage outside the free ink tank. A valve-free free ink writing felt pen including a nib.
Claims20
A nib for a valve-free free ink writing felt pen comprising a first end configured to deliver ink to a writing support and second end, opposite the first end, configured to be inserted in a nib receiving part of the valve-free free ink writing felt pen, the first end and the second end defining an axial direction of the nib, the nib comprising a main body made of porous hydrophilic material and comprising one or more insert made of porous hydrophobic material, the one or more insert being configured to allow intake of air from the outside of a free ink tank of the valve-free free ink writing felt pen into the free ink tank and avoid ink leakage outside the free ink tank, wherein the nib comprises an open cavity having an opening, the opening of the cavity being configured to face the free ink tank when the nib is received in the nib receiving part, the one or more insert being disposed in the open cavity.
A nib for a valve-free free ink writing felt pen to deliver ink to a writing support, the nib comprising:
- a main body including porous hydrophilic material;
- one or more inserts including porous hydrophobic material;
- and
- an open cavity having an opening, the opening of the cavity being configured to face a free ink tank when the nib is received in the valve-free free ink writing felt pen.
A nib for a valve-free free ink writing felt pen, the nib comprising:
- a first end configured to deliver ink to a writing support;
- a second end opposite the first end and configured to be inserted in a nib receiving part of the valve-free free ink writing felt pen;
- a main body;
- one or more inserts configured to allow intake of air from the outside of a free ink tank of the valve-free free ink writing felt pen into the free ink tank and avoid ink leakage outside the free ink tank;
- and
- an open cavity having an opening, the opening of the cavity being configured to face the free ink tank when the nib is received in the nib receiving part.
Dependencies are inferred from the claim text.