Patent US4749618A successfully refreshed from Google Patents.
US4749618A
Expired / Lapsed
US
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Tip member for coating tool
Assignee: Pilot Ink Co Ltd
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Filing: 1986-03-11
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Granted: 1988-06-07
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Expires: 2006-03-11
Abstract
Abstract A tip member for a coating tool in the form of a stick, wherein the stick is formed of a bundle of resin-treated fibers substantially uniformly stretched in the longitudinal direction of the fibers. One end of the stick is tapered to the tip with the fibers being unraveled to unbind the fibers in that area. One or more longitudinal grooves may be formed in the surface of the stick.
Inventors
- 👤 Keizo Kawaguchi
- 👤 Kiyoshi Kuroyanagi
- 👤 Gengo Shinada
- 👤 Yasutaka Shinguu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:42
CPC Classifications
B; B43; B43K; B43K1/00; B43K1/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2973; Y10T428/2975; Y10T428/2976; Y10T428/2978
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
In a tip member for a coating tool in the form of a stick for coating a liquid, the improvement wherein said stick is formed of a resin-treated bundle of fibers substantially uniformly stretched in their longitudinal direction, said tip member having a porosity in the range of 20% to 90%, one end of said tip member being tapered to form a tip portion, and wherein said fibers of said tip portion are unraveled to unbind said fibers at said tip portion, and wherein said stick is provided with at least one axially directed thin groove communicating with said tip member at the surface thereof to cause a concentrated quantity of liquid to be introduced to said tip member and contribute to sending out a suitable abundant quantity of coating liquid at all times.
Claim 2
Dependent Claim
134 words
In a tip member for a coating tool in the form of a stick for coating a liquid, the improvement wherein said stick is formed of a resin-treated bundle of fibers substantially uniformly stretched in their longitudinal direction, said tip member having a porosity in the range of 20% to 90%, one end of said tip member being tapered to form a tip portion, and wherein said fibers of said tip portion are unraveled to unbind said fibers at said tip portion, and wherein said stick is provided with at least one axially directed thin groove communicating with said tip member at the surface thereof to cause a concentrated quantity of liquid to be introduced to said tip member and contribute to sending out a suitable abundant quantity of coating liquid at all times.
Claim 3
Dependent Claim
26 words
The tip member for a coating tool as claimed in claim 1, wherein said tip member has a porosity in a range of 35 to 80%.
Claim 4
Dependent Claim
32 words
The tip member for a coating tool as claimed in claim 1, wherein said fibers are selected from the group consisting of filaments, spun yarn, continuous, long parallel fibers, and fiber slivers.
Claim 5
Dependent Claim
32 words
The tip member for a coating tool as claimed in claim 1, wherein a width and depth of said at least one groove are in a range of 0.3 to 3 mm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |