Writing instrument having a reservoir between a tip and a capillary storage
AssigneeAvery Dennison Corporation
InventorDale E. Harder
Life of this patent
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AssigneeAvery Dennison Corporation
InventorDale E. Harder
Estimating the term…
A capillary wick running through the reservoir so that at least a portion of the capillary wick along the longitudinal axis is in direct contact with the liquid within the reservoir. This allows liquid in the reservoir to convey to a tip with minimal flow resistance. As such, a sufficient amount of liquid is provided to the tip, even when the writing instrument is used in quick strokes or for a long duration of time. In a writing position, a capillary storage is above the reservoir so that the capillary storage remains substantially dry without the head pressure affecting the capillary storage. The present invention is also directed to providing a porous divider wall between a reservoir that is below the storage, but without a capillary wick. Here, the porous divider wall is used to regulate air flow into the reservoir. Without the capillary wick, the unit costs and the manufacturing costs are substantially reduced.
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Dependencies are inferred from the claim text.