Patent US4229115A successfully refreshed from Google Patents.
US4229115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nib for a writing instrument
Assignee: Binney and Smith Inc
•
Filing: 1979-02-12
•
Granted: 1980-10-21
•
Expires: 1999-02-12
Abstract
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.
Inventors
- 👤 Lester H. Olinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:06
CPC Classifications
B; B43; B43K; B43K1/00; B43K1/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
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.
Claim 2
Dependent Claim
67 words
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.
Claim 3
Dependent Claim
49 words
A nib in accordance with claim 1 in which said trunk comprises an elongated frusto-conical portion of smaller maximum diameter than said barrel portion and extending from said barrel portion and a second shorter frusto-conical portion extending from said elongated frusto-conical portion and forming the end of the nib.
Claim 4
Dependent Claim
25 words
A nib in accordance with claim 1 having an elongated slot extending from said frusto-conical portion across said barrel portion and into said tip portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |