Roller ball pen for use with metallic inks
AssigneeCrayola LLC
InventorsLinda J. Smith, Luis Rodrigo Pineiro
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Abstract
A roller ball pen for use with metallic inks, and a method for assembling the roller ball pen for use with metallic inks, is described herein. The pen body includes a housing that encloses a reservoir, a collet, a feed rod, and a tip. The feed rod transfers ink from the reservoir to a roller ball tip at a tapered end of the pen housing. In embodiments, the feed rod is embedded at a threshold distance inside the reservoir to provide an increased surface area for transfer of a metallic ink suspension. In further embodiments, a method of assembling the roller ball pen includes saturation of the reservoir with a metallic ink based on inserting a particular injection needle at a particular depth inside the reservoir.
Claims15
A roller ball pen device for use with metallic inks comprising:
- a pen body including a housing;
- a reservoir enclosed by the housing, wherein the reservoir is saturated with a metallic ink having a viscosity that is in a range between 1.0 cps and 50.0 cps;
- a tapered tip coupled to a first end of the pen body, the tapered tip comprising a roller ball;
- and
- a feed rod adjacent to the tapered tip, the feed rod configured to transfer a first amount of the metallic ink from the reservoir to the roller ball, wherein a first end of the feed rod is disposed at a first end of the housing, and further wherein a second end of the feed rod is disposed at a first threshold distance inside the reservoir.
A pen apparatus comprising:
- a housing;
- a reservoir enclosed by the housing, wherein the reservoir is saturated with a metallic ink having a viscosity that is in a range between 1.0 cps and 50.0 cps;
- a tip comprising a roller ball;
- and
- a feed rod configured to transfer an amount of metallic ink from the reservoir to the roller ball, wherein the amount of metallic ink transferred from the reservoir to the roller ball is increased based on the feed rod being disposed at or above a threshold distance inside the reservoir.
Dependencies are inferred from the claim text.