US3296624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for feeding ink into the output nozzle of a writing instrument
Assignee: Paillard SA
•
Filing: 1964-11-24
•
Granted: 1967-01-03
•
Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Ascoli Enzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/16; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; G01D15/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN A WRITING INSTRUMENT, THE COMBINATION OF AN INK CONTAINER, AN OUTPUT NOZZLE, A CONNECTION BETWEEN SAID CONTAINER AND SAID NOZZLE, A PUMP INCLUDING A CYLINDER INSERTED LONGITUDINALLY IN SAID CONNECTION, THE ENDS OF SAID CYLINDER COMMUNICATING RESPECTIVELY WITH THE NOZZLE AND WITH THE CONTAINER, AND A PISTON OF MAGNETIC MATERIAL ADAPTED TO BE SHIFTED INSIDE SAID CYLINDER WITH A SUBSTANTIAL CLEARANCE WITH REFERENCE THERETO BETWEEN A FIRST POSITION NEARER THE CONTAINER END OF THE CYLINDER AND A SECOND POSITION NEARER THE NOZZLE END OF THE CYLINDER, THE PRESSURE OF SAID PUMP BEING OF A VALUE SUFFICIENT TO FORM A MINISCUS AT THE OUTER END OF SAID NOZZLE BUT INSUFFICIENT TO BURST SAID MINISCUS, MEANS URGING THE PISTON TOWARDS ITS FIRST POSITION AND MEANS ADAPTED TO TRANSIENTLY PRODUCE A MAGNETIC FIELD URGING THE PISTON INTO ITS SECOND POSITION, THE FLOW OF INK OUT OF SAID NOZZLE ONLY OCCURRING WHEN A SUFFICIENT ELECTROSTATIC FIELD IS GENERATED ACROSS THE END THEREOF.
Claim 2
Dependent Claim
159 words
IN A WRITING INSTRUMENT, THE COMBINATION OF AN INK CONTAINER, AN OUTPUT NOZZLE, A CONNECTION BETWEEN SAID CONTAINER AND SAID NOZZLE, A PUMP INCLUDING A CYLINDER INSERTED LONGITUDINALLY IN SAID CONNECTION, THE ENDS OF SAID CYLINDER COMMUNICATING RESPECTIVELY WITH THE NOZZLE AND WITH THE CONTAINER, AND A PISTON OF MAGNETIC MATERIAL ADAPTED TO BE SHIFTED INSIDE SAID CYLINDER WITH A SUBSTANTIAL CLEARANCE WITH REFERENCE THERETO BETWEEN A FIRST POSITION NEARER THE CONTAINER END OF THE CYLINDER AND A SECOND POSITION NEARER THE NOZZLE END OF THE CYLINDER, THE PRESSURE OF SAID PUMP BEING OF A VALUE SUFFICIENT TO FORM A MINISCUS AT THE OUTER END OF SAID NOZZLE BUT INSUFFICIENT TO BURST SAID MINISCUS, MEANS URGING THE PISTON TOWARDS ITS FIRST POSITION AND MEANS ADAPTED TO TRANSIENTLY PRODUCE A MAGNETIC FIELD URGING THE PISTON INTO ITS SECOND POSITION, THE FLOW OF INK OUT OF SAID NOZZLE ONLY OCCURRING WHEN A SUFFICIENT ELECTROSTATIC FIELD IS GENERATED ACROSS THE END THEREOF.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |