US3285228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-gravity pen
Assignee: Individual
•
Filing: 1965-05-19
•
Granted: 1966-11-15
•
Expires: 1985-05-19
Abstract
No abstract record available.
Inventors
- 👤 Paul C Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:41
CPC Classifications
B; B43; B43K; B43K7/00; B43K7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A BALL POINTED PEN COMPRISING: A BARREL HOUSING, A PLUNGER OPERATING WITHIN SAID BARREL, AN INK CARTRIDGE CONTAINING AN INK SUPPLY, SAID CARTRIDGE BEING SLIDABLY POSITIONED WITHIN SAID BARREL, AND HAVING AN OPEN END, A ROTATING BALL AND A SOCKET RETAINING SAID BALL POINT BEING POSITIONED AT THE OTHER END OF SAID CARTRIDGE, A PASSAGEWAY COMMUNICATING THE SEAT AND BALL WITH THE INTERIOR OF SAID CARTRIDGE, A PISTON OPERABLE BY SAID PLUNGER FOR SLIDING MOVEMENT WITHIN SAID BARREL, SAID PISTON HAVING AN ANNULAR GROOVE OPEN IN ACROSS SECTION ON THE SIDE FACING THE BARREL AND SUBSTANTIALLY CLOSED ON THE OTHER SIDES, A FIRST ANNULAR SEALING RING POSITIONED WITHIN SAID GROOVE, SAID PISTON HAVING ABUTTING MEANS FOR CONTACTING THE UPPER END OF SAID CARTRIDGE FOR EFFECTING DOWNWARD MOVEMENT OF SAID CARTRIDGE AND SAID BALL POINT INTO WRITING POSITION,
Claim 2
Dependent Claim
137 words
A BALL POINTED PEN COMPRISING: A BARREL HOUSING, A PLUNGER OPERATING WITHIN SAID BARREL, AN INK CARTRIDGE CONTAINING AN INK SUPPLY, SAID CARTRIDGE BEING SLIDABLY POSITIONED WITHIN SAID BARREL, AND HAVING AN OPEN END, A ROTATING BALL AND A SOCKET RETAINING SAID BALL POINT BEING POSITIONED AT THE OTHER END OF SAID CARTRIDGE, A PASSAGEWAY COMMUNICATING THE SEAT AND BALL WITH THE INTERIOR OF SAID CARTRIDGE, A PISTON OPERABLE BY SAID PLUNGER FOR SLIDING MOVEMENT WITHIN SAID BARREL, SAID PISTON HAVING AN ANNULAR GROOVE OPEN IN ACROSS SECTION ON THE SIDE FACING THE BARREL AND SUBSTANTIALLY CLOSED ON THE OTHER SIDES, A FIRST ANNULAR SEALING RING POSITIONED WITHIN SAID GROOVE, SAID PISTON HAVING ABUTTING MEANS FOR CONTACTING THE UPPER END OF SAID CARTRIDGE FOR EFFECTING DOWNWARD MOVEMENT OF SAID CARTRIDGE AND SAID BALL POINT INTO WRITING POSITION,
References Cited (Backward Citations)
AT157758B
Cited
US2432061A
Cited
FR995271A
Cited
DE926054C
Cited
US2787249A
Cited
US2870742A
Cited
US3133526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |