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US4306819A Expired / Lapsed US ⏱️ 0.0 years remaining

Deformable fibrous pen construction for selective nib placement

Assignee: DIA-NIELSEN ZUBEHOR fur DIE MESSTECHNIK INDUSTRIESTRASSE 1 D-5160 DUREN 6 WEST GERMANY A CORP OF GERMANY GmbH
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Filing: 1980-03-11
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Granted: 1981-12-22
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Expires: 2000-03-11
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Abstract

Abstract A fibrous pen for recording instruments and the like comprises an ink supply container, at least one writing tube extending therefrom and a fibrous or lamella writing nib extending through the writing tube and from the free end thereof. The writing tube comprises an outer plastic tube and an inner deformable metallic tube. The deformable metallic tube permits the writing tube to be permanently bent to precisely position the end of the writing nib at a predetermined location.

Inventors

  • 👤 Heinz-Werner Schusseler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 14:26
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/005; B43K8/00; B43K8/003; B43K8/02; G; G01; G01D; G01D15/00; G01D15/16; Y; Y10; Y10S; Y10S138/00; Y10S138/08

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 212 words
A fibrous pen for recording instruments and the like and comprising: (a) means defining a container for an ink supply and an integral outer tubular member extending therefrom, said container and said outer tubular member comprising a single plastic piece; (b) an inner, deformable, metallic, thin-walled tubular member extending through at least a substantial length of said outer tubular member such that the external surface of said inner tubular member and the interior surface of said outer tubular member are coextensive, said inner and outer tubular members forming a writing tube; (c) a bore of predetermined diameter extending through at least the wall of said container and communicating with said outer tubular member, the internal diameter of said bore being less than the internal diameter of said outer tubular member forming an annular shoulder therebetween, one end of said inner tubular member abutting said shoulder; and (d) an elongated fibrous or lamella writing nib extending from said container through said bore and said inner tubular member with one end thereof projecting from the free end of said writing tube; (e) whereby said writing tube may be bent to and permanently maintained in any predetermined configuration to permanently locate the end of said writing nib at any selected location relative to said container.
Claim 2
Dependent Claim 212 words
A fibrous pen for recording instruments and the like and comprising: (a) means defining a container for an ink supply and an integral outer tubular member extending therefrom, said container and said outer tubular member comprising a single plastic piece; (b) an inner, deformable, metallic, thin-walled tubular member extending through at least a substantial length of said outer tubular member such that the external surface of said inner tubular member and the interior surface of said outer tubular member are coextensive, said inner and outer tubular members forming a writing tube; (c) a bore of predetermined diameter extending through at least the wall of said container and communicating with said outer tubular member, the internal diameter of said bore being less than the internal diameter of said outer tubular member forming an annular shoulder therebetween, one end of said inner tubular member abutting said shoulder; and (d) an elongated fibrous or lamella writing nib extending from said container through said bore and said inner tubular member with one end thereof projecting from the free end of said writing tube; (e) whereby said writing tube may be bent to and permanently maintained in any predetermined configuration to permanently locate the end of said writing nib at any selected location relative to said container.
Claim 3
Dependent Claim 21 words
A fibrous pen according to claim 1 wherein said inner metallic tubular member is press-fitted into said outer plastic tubular member.
Claim 4
Dependent Claim 24 words
A fibrous pen according to claim 1 wherein said inner metallic tubular member is fitted by injection molding in said outer plastic tubular member.

References Cited (Backward Citations)

US2704556A Cited
US3003182A Cited
DE2018758A1 Cited
US3804538A Cited
JPS5270570A Cited
US4017871A Cited
DE2642476A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-12-21 1985-06-22 1985-12-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-12-21 1989-06-22 1989-12-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-12-21 1993-06-22 1993-12-22 $7700.00 Window Closed / Lapsed

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