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US3614248A Expired / Lapsed US ⏱️ 0.0 years remaining

Pen wick made of synthetic resin

Assignee: Individual
•
Filing: 1968-07-24
•
Granted: 1971-10-19
•
Expires: 1988-07-24
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Abstract

Abstract A pen wick made of a synthetic resin material comprises a cylindrical body having a lower inwardly curved transition portion which terminates at the lower end in a writing point. A plurality of internal capillary size axially extending passages are defined in the body and they terminate around the point in respective radially extending slots. The upper end of the body, which is adapted to be located within a reservoir of ink, is provided with one or more circumferentially extending grooves and the exterior of the body is provided with longitudinally extending grooves which intersect at their upper ends with the circumferential grooves and extend downwardly into closely spaced relationship to the slots. Ink is distributed to the point through the internal passages to the slots and an additional supply is directed form the circumferential grooves downwardly along the longitudinal grooves to the vicinity of the slots for supplying an additional supply of ink to the point.

Inventors

  • 👤 Katsumi Otsuka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 23:00
CPC Classifications
B; B43; B43K; B43K1/00; B43K1/003

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 156 words
A pen wick made of a synthetic resin material for use with an ink supply cartridge or ink reservoir, comprising a substantially cylindrical body having an upper end adapted to be in communication with an ink reservoir and terminating in a lower end with a writing point, at least one axially extending internal capillary ink supply passage defined through said body from the upper end thereof to the lower end adjacent said writing point, said passage terminating in a slot extending outwardly from said point, at least one circumferential ink supply groove defined around the periphery of the exterior of said body adjacent the upper end thereof at a location which is adapted to be in communication with the ink reservoir, and a plurality of longitudinal grooves defined in the periphery of said body communicating at their upper end with said circumferential grooves and extending downwardly into the curved paper contacting part of said writing point.
Claim 2
Dependent Claim 156 words
A pen wick made of a synthetic resin material for use with an ink supply cartridge or ink reservoir, comprising a substantially cylindrical body having an upper end adapted to be in communication with an ink reservoir and terminating in a lower end with a writing point, at least one axially extending internal capillary ink supply passage defined through said body from the upper end thereof to the lower end adjacent said writing point, said passage terminating in a slot extending outwardly from said point, at least one circumferential ink supply groove defined around the periphery of the exterior of said body adjacent the upper end thereof at a location which is adapted to be in communication with the ink reservoir, and a plurality of longitudinal grooves defined in the periphery of said body communicating at their upper end with said circumferential grooves and extending downwardly into the curved paper contacting part of said writing point.
Claim 3
Dependent Claim 50 words
A pen wick, according to claim 1, including a plurality of internal passages of capillary size oriented radially around the axis of said body and extending longitudinally through said body to said point, the lower ends of said passages terminating in slots which extend radially upwardly from said writing point.
Claim 4
Dependent Claim 44 words
A pen wick, according to claim 2, wherein there are a plurality of longitudinally extending grooves defined in the periphery of said body communicating at their upper ends with said circumferential grooves and having their lower ends closely spaced in relation to said slots.
Claim 5
Dependent Claim 23 words
A pen wick, according to claim 3, wherein there are a plurality of circumferential grooves located adjacent the upper ends of said body.

References Cited (Backward Citations)

US1379602A Cited
US3306267A Cited
US3338216A Cited
FR1519960A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-10-18 1975-04-19 1975-10-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-18 1979-04-19 1979-10-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-18 1983-04-19 1983-10-19 $7700.00 Window Closed / Lapsed

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