US4286005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink reservoir element for use in a marking instrument, and method and apparatus for producing same
Assignee: Filtrona Richmond Inc
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Filing: 1979-03-05
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Granted: 1981-08-25
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Expires: 1999-03-05
Abstract
Abstract An ink reservoir element for use in a marking instrument is disclosed, which combines good ink holding capacity and good ink release properties with a wide variety of inks. The ink reservoir element is formed from a coherent sheet of flexible thermoplastic fibrous material, such as a spunbonded polyester fabric or a foam-attenuated extruded polyester fabric, which has been uniformly embossed with a series of parallel grooves. The embossed sheet is compacted and bonded into a dimensionally stable rod-shaped body whose longitudinal axis extends parallel to the embossed grooves. A method and apparatus is disclosed for continuous production of the ink reservoir elements from a continuous web of the fibrous sheet material.
Inventors
- 👤 Richard M. Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:11
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/02; B43K15/00; B43K15/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/24595; Y10T428/24603; Y10T428/24612; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
An ink reservoir element for use in a marking instrument, comprising a coherent sheet of flexible thermoplastic fibrous material compatible with formic acid compacted together and bonded into a dimensionally stable rod-shaped body, said fibrous material being composed of an interconnecting network of randomly arranged, highly dispersed, continuous-filament thermoplastic fibers which are bonded together at the filament junction; at least one surface of said sheet being uniformly embossed with a series of parallel grooves extending longitudinally with respect to said rod-shaped body, forming capillaries capable of transporting ink which extend longitudinally from end to end of the finished element.
Claim 2
Dependent Claim
99 words
An ink reservoir element for use in a marking instrument, comprising a coherent sheet of flexible thermoplastic fibrous material compatible with formic acid compacted together and bonded into a dimensionally stable rod-shaped body, said fibrous material being composed of an interconnecting network of randomly arranged, highly dispersed, continuous-filament thermoplastic fibers which are bonded together at the filament junction; at least one surface of said sheet being uniformly embossed with a series of parallel grooves extending longitudinally with respect to said rod-shaped body, forming capillaries capable of transporting ink which extend longitudinally from end to end of the finished element.
Claim 3
Dependent Claim
14 words
The ink reservoir element of claim 1, wherein said thermoplastic fibers are polyester fibers.
Claim 4
Dependent Claim
44 words
The ink reservoir element of claim 1, wherein said embossed grooves have a width within the range of from about 0.005 inch to about 1/8 inch, and a depth of at least about 0.0015 inch but less than the tearing point of said sheet.
Claim 5
Dependent Claim
28 words
The ink reservoir element of claim 1, wherein said rod-shaped body is provided with at least one longitudinal peripheral slot extending continuously the entire length of said body.
Claim 6
Dependent Claim
15 words
The ink reservoir element of claim 1, wherein said fibrous material is a spunbonded fabric.
Claim 7
Dependent Claim
16 words
The ink reservoir element of claim 1, wherein said fibrous material is a foam-attenuated extruded fabric.
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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) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |