US3332400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink cartridge
Assignee: Parker Pen Co
•
Filing: 1965-02-11
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Granted: 1967-07-25
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Expires: 1985-02-11
Abstract
No abstract record available.
Inventors
- 👤 Clemens A Sonntag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:40
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/06; B29C65/0672; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/13; B29C66/131; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5344; B29C66/54; B29C66/542; B29C66/61; B29C66/612; B43; B43K; B43K5/00; B43K5/02; B43K5/14; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/725; B29L2031/7252
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN AN INK CARTRIDE, A RIGID UNITARY, GENERALLY TUBULAR PLASTIC MEMBER CLOSED AT ONE END AND DEFINING A CHAMBER THEREIN, AND AN INTEGRAL ANNULAR FLANGE EXTENDING INWARDLY FROM THE INNER WALL OF SAID MEMBER TO DEFINE A RESTRICTED PASSAGEWAY OF GREATER THAN CAPILLARY CROSS SECTION CONNECTING THE ADJACENT PORTIONS OF SAID CHAMBER, SAID FLANGE BEING POSITIONED NEARER TO SAID ONE END THAN TO THE OTHER END OF SAID MEMBER, SAID PASSAGEWAY BEING OF SUCH CROSS-SECTIONAL AREA THAT, IN NORMAL USAGE OF SAID PEN, SURFACE TENSION RETAINS INK IN ONE PORTION OF SAID CHAMBER, AND THAT SAID SURFACE TENSION IS BROKEN BY INTENTIONALLY JARRING SAID PEN.
Claim 2
Dependent Claim
105 words
IN AN INK CARTRIDE, A RIGID UNITARY, GENERALLY TUBULAR PLASTIC MEMBER CLOSED AT ONE END AND DEFINING A CHAMBER THEREIN, AND AN INTEGRAL ANNULAR FLANGE EXTENDING INWARDLY FROM THE INNER WALL OF SAID MEMBER TO DEFINE A RESTRICTED PASSAGEWAY OF GREATER THAN CAPILLARY CROSS SECTION CONNECTING THE ADJACENT PORTIONS OF SAID CHAMBER, SAID FLANGE BEING POSITIONED NEARER TO SAID ONE END THAN TO THE OTHER END OF SAID MEMBER, SAID PASSAGEWAY BEING OF SUCH CROSS-SECTIONAL AREA THAT, IN NORMAL USAGE OF SAID PEN, SURFACE TENSION RETAINS INK IN ONE PORTION OF SAID CHAMBER, AND THAT SAID SURFACE TENSION IS BROKEN BY INTENTIONALLY JARRING SAID PEN.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |