Patent US3247795A successfully refreshed from Google Patents.
US3247795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning projectile for smooth bore guns
Assignee: Individual
•
Filing: 1964-04-01
•
Granted: 1966-04-26
•
Expires: 1984-04-01
Abstract
No abstract record available.
Inventors
- 👤 Abela Michael Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:52
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/02; F42B10/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A SHOTGUN SHELL, THE COMBINATION COMPRISING A PROPELLANT; A WAD FORWARDLY OF THE PROPELLANT CHARACTERIZED BY A FRANGIBLE CENTRAL PORTION; AND A PROJECTILE FORWARDLY OF THE WAD WITH ITS TRAILING END IN ENGAGEMENT THEREWITH BUT OUT OF CONTACT WITH THE FRANGIBLE PORTION THEREOF, SAID PROJECTILE HAVING BETWEEN ITS TRAILING END AND ITS LEADING END A MULTIPLICITY OF GENERALLY ANNULAR SERRATIONS THE OUTERMOST PORTIONS OF WHICH ARE OF A DIAMETER SUFFICIENT TO PERMIT THEM TO ENGAGE THE INTERIOR SURFACE OF A SHOTGUN BARREL.
Claim 2
Dependent Claim
83 words
IN A SHOTGUN SHELL, THE COMBINATION COMPRISING A PROPELLANT; A WAD FORWARDLY OF THE PROPELLANT CHARACTERIZED BY A FRANGIBLE CENTRAL PORTION; AND A PROJECTILE FORWARDLY OF THE WAD WITH ITS TRAILING END IN ENGAGEMENT THEREWITH BUT OUT OF CONTACT WITH THE FRANGIBLE PORTION THEREOF, SAID PROJECTILE HAVING BETWEEN ITS TRAILING END AND ITS LEADING END A MULTIPLICITY OF GENERALLY ANNULAR SERRATIONS THE OUTERMOST PORTIONS OF WHICH ARE OF A DIAMETER SUFFICIENT TO PERMIT THEM TO ENGAGE THE INTERIOR SURFACE OF A SHOTGUN BARREL.
References Cited (Backward Citations)
US2322751A
Cited
US2090533A
Cited
CH226472A
Cited
US2345619A
Cited
US2476291A
Cited
US2820412A
Cited
US3011404A
Cited
US3063376A
Cited
US3065696A
Cited
US3062145A
Cited
US3058420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |