Patent US3141187A successfully refreshed from Google Patents.
US3141187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marking instrument
Assignee: Esterbrook Pen Co
•
Filing: 1962-09-05
•
Granted: 1964-07-21
•
Expires: 1982-09-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert E Simon
- 👤 Harold E Steinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:49
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/02; B43K8/04; B43K8/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A MARKING INSTRUMENT COMPRISING A GENERALLY CYLINDRICAL HOLLOW INK RESERVOIR HAVING AN OPENING AT ONE END THEREOF, A NIB SUPPORT STRUCTURE MOUNTED END WISE OF SAID ONE END OF THE INK RESERVOIR INCLUDING A NIB HOLDER AND TIP SECTION, SAID NIB HOLDER HAVING AN ELONGATED NECK PROVIDED WITH AN AXIAL BORE THERETHROUGH AND A RESILIENT RADIAL FLANGE AT ITS INNER END DISPOSED IN OUTWARDLY OVERLYING ENGAGEMENT WITH SAID ONE END OF THE RESERVOIR, SAID TIP SECTION HAVING AN ELONGATED NECK SNUGLY EMBRACING THE NECK OF THE NIB HOLDER AND HAVING AT ITS INNER END A RADIALLY EXTENDING FLANGE PORTION SNUGLY ENGAGED OVER THE FLANGE OF THE NIB HOLDER AND TERMINATING IN A PERIPHERAL SKIRT OUTWARDLY OVERLYING THE ADJACENT SIDE WALL OF THE INK RESERVOIR, INTERENGAGING LOCKING MEANS RELEASABLY MOUNTING SAID FLANGE PORTION OF SAID TIP SECTION TO SAID ADJACENT SURFACE OF THE INK RESERVOIR OPERABLE TO PERMIT SAID TIP SECTION TO BE DETACHED FROM SAID RESERVOIR BY MOVEMENT AXIALLY THEREOF, AND AN ELONGATED NIB MOUNTED IN THE BORE OF THE NECK OF THE NIB HOLDER WITH THE INNER END OF SAID NIB EXTENDING INTERIORLY OF THE INK RESERVOIR AND ITS OUTER END PROJECTING BEYOND THE OUTER END OF THE NIB HOLDER.
Claim 2
Dependent Claim
201 words
A MARKING INSTRUMENT COMPRISING A GENERALLY CYLINDRICAL HOLLOW INK RESERVOIR HAVING AN OPENING AT ONE END THEREOF, A NIB SUPPORT STRUCTURE MOUNTED END WISE OF SAID ONE END OF THE INK RESERVOIR INCLUDING A NIB HOLDER AND TIP SECTION, SAID NIB HOLDER HAVING AN ELONGATED NECK PROVIDED WITH AN AXIAL BORE THERETHROUGH AND A RESILIENT RADIAL FLANGE AT ITS INNER END DISPOSED IN OUTWARDLY OVERLYING ENGAGEMENT WITH SAID ONE END OF THE RESERVOIR, SAID TIP SECTION HAVING AN ELONGATED NECK SNUGLY EMBRACING THE NECK OF THE NIB HOLDER AND HAVING AT ITS INNER END A RADIALLY EXTENDING FLANGE PORTION SNUGLY ENGAGED OVER THE FLANGE OF THE NIB HOLDER AND TERMINATING IN A PERIPHERAL SKIRT OUTWARDLY OVERLYING THE ADJACENT SIDE WALL OF THE INK RESERVOIR, INTERENGAGING LOCKING MEANS RELEASABLY MOUNTING SAID FLANGE PORTION OF SAID TIP SECTION TO SAID ADJACENT SURFACE OF THE INK RESERVOIR OPERABLE TO PERMIT SAID TIP SECTION TO BE DETACHED FROM SAID RESERVOIR BY MOVEMENT AXIALLY THEREOF, AND AN ELONGATED NIB MOUNTED IN THE BORE OF THE NECK OF THE NIB HOLDER WITH THE INNER END OF SAID NIB EXTENDING INTERIORLY OF THE INK RESERVOIR AND ITS OUTER END PROJECTING BEYOND THE OUTER END OF THE NIB HOLDER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |