US3146058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording pen and ink supply system
Assignee: ESTERLINE ANGUS INSTR Co
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Filing: 1961-07-06
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Granted: 1964-08-25
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Expires: 1981-07-06
Abstract
No abstract record available.
Inventors
- 👤 William H Henshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:24
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/485; B41J2/49; B41J2/22; B41J2/23; B41J2/235; B41J2/25; B41J2/255; G; G01; G01D; G01D15/00; G01D15/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PEN FOR WRITING ON A SURFACE COMPRISING A NIB, MEANS FOR SUPPLYING A WRITING FLUID TO SAID NIB, SAID NIB HAVING A CAPILLARY-SIZE BORE, THE PORTION OF SAID BORE ADJACENT SAID SURFACE BEING ENLARGED TO DEFINE A RESERVOIR CAVITY FOR SAID WRITING FLUID, SAID CAVITY DEFINING A MOUTH, THE CROSS-SECTIONAL AREA OF WHICH IS GREATER THAN THAT OF A CAPILLARY-SIZE BORE, AND MEANS INTEGRALLY ASSOCIATED WITH SAID NIB FOR MAINTAINING A SELECTABLY PREDETERMINED GAP BETWEEN SAID NIB AND SAID SURFACE, WHEREBY NO PART OF SAID NIB IS IN CONTACT WITH SAID SURFACE AND THE WEARING OF SAID NIB IS SUBSTANTIALLY REDUCED.
Claim 2
Dependent Claim
102 words
A PEN FOR WRITING ON A SURFACE COMPRISING A NIB, MEANS FOR SUPPLYING A WRITING FLUID TO SAID NIB, SAID NIB HAVING A CAPILLARY-SIZE BORE, THE PORTION OF SAID BORE ADJACENT SAID SURFACE BEING ENLARGED TO DEFINE A RESERVOIR CAVITY FOR SAID WRITING FLUID, SAID CAVITY DEFINING A MOUTH, THE CROSS-SECTIONAL AREA OF WHICH IS GREATER THAN THAT OF A CAPILLARY-SIZE BORE, AND MEANS INTEGRALLY ASSOCIATED WITH SAID NIB FOR MAINTAINING A SELECTABLY PREDETERMINED GAP BETWEEN SAID NIB AND SAID SURFACE, WHEREBY NO PART OF SAID NIB IS IN CONTACT WITH SAID SURFACE AND THE WEARING OF SAID NIB IS SUBSTANTIALLY REDUCED.
References Cited (Backward Citations)
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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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |