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US 4,229,115 AGranted
Nib for a writing instrument
AssigneeBinney & Smith Inc.
InventorLester H. Olinsky
Life of this patent
Estimating the term…
Abstract
A marker nib having a tapered tip portion, a substantially cylindrical barrel portion, and a trunk having a frusto-conical portion of smaller maximum diameter than the barrel portion and extending therefrom. The nib can be manufactured in a mold requiring simple tooling and having a parting line for the mold segments at the junction of the barrel portion with the trunk.
Claims3
A molded nib for a writing instrument comprising:
- a porous plastic tapered tip portion of substantially circular cross section;
- a porous plastic substantially cylindrical barrel portion extending from said tip portion and of the same diameter as the maximum diameter of said tip portion;
- and
- a porous plastic trunk comprising a frusto-conical portion of smaller maximum diameter than said barrel portion and extending from said barrel portion.
1 more element
Dependencies are inferred from the claim text.