US3223091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter pipe
Assignee: S M FRANK AND CO Inc
•
Filing: 1962-11-13
•
Granted: 1965-12-14
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Fassbender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:03
CPC Classifications
A; A24; A24F; A24F1/00; A24F1/02; A24F1/20; A24F5/00; A24F5/06; A24F5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A FILTER ADAPTED TO BE FITTED WITHIN A TOBACCO CHAMBER IN A PIPE AND WHICH PIPE HAS AN ANNULAR DOWNWARDLYFACING SHOULDER AT ITS LOWER END AND A PLUG CLOSURE AT THE BOTTOM OF THE BOWL, WITH SUCH SHOULDER AND A PLUG CLOSURE DEFINING A FILTER-HOLDING CHAMBER BETWEEN THEM, THE IMPROVEMENTS CONSISTING IN A SPOOL-SHAPED POROUS FILTER CONFINED IN THE FILTER-HOLDING CHAMBER AND BELOW THE SHOULDER, SAID FILTER HAVING A CENTRAL, SOLID AND IMPERFORATE CYLINDRICAL NECK DEFINING AN ANNULAR SPACE BETWEEN IT AND THE INTERIOR OF THE BOWL, THE FILTER HAVING DISKS OF LARGER DIAMETER THAN THE NECK AT THE OPPOSITE ENDS OF THE NECK, SAID DISKS EACH HAVING A MARGINAL EDGE PORTION PROJECTING BEYOND THE PERIPHERY OF THE NECK, THE UPPER ONE OF SAID DISKS HAVING A PLURALITY OF HOLES EXTENDING THROUGH ITS MARGINAL EDGE PORTION BEYOND THE PERIPHERY OF THE NECK
Claim 2
Dependent Claim
142 words
A FILTER ADAPTED TO BE FITTED WITHIN A TOBACCO CHAMBER IN A PIPE AND WHICH PIPE HAS AN ANNULAR DOWNWARDLYFACING SHOULDER AT ITS LOWER END AND A PLUG CLOSURE AT THE BOTTOM OF THE BOWL, WITH SUCH SHOULDER AND A PLUG CLOSURE DEFINING A FILTER-HOLDING CHAMBER BETWEEN THEM, THE IMPROVEMENTS CONSISTING IN A SPOOL-SHAPED POROUS FILTER CONFINED IN THE FILTER-HOLDING CHAMBER AND BELOW THE SHOULDER, SAID FILTER HAVING A CENTRAL, SOLID AND IMPERFORATE CYLINDRICAL NECK DEFINING AN ANNULAR SPACE BETWEEN IT AND THE INTERIOR OF THE BOWL, THE FILTER HAVING DISKS OF LARGER DIAMETER THAN THE NECK AT THE OPPOSITE ENDS OF THE NECK, SAID DISKS EACH HAVING A MARGINAL EDGE PORTION PROJECTING BEYOND THE PERIPHERY OF THE NECK, THE UPPER ONE OF SAID DISKS HAVING A PLURALITY OF HOLES EXTENDING THROUGH ITS MARGINAL EDGE PORTION BEYOND THE PERIPHERY OF THE NECK
References Cited (Backward Citations)
US940184A
Cited
US1028906A
Cited
US1027838A
Cited
US1480268A
Cited
GB215058A
Cited
US1619090A
Cited
GB394400A
Cited
US2068866A
Cited
US2045779A
Cited
US2267795A
Cited
US2362891A
Cited
US2363144A
Cited
US2388338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |