US3339487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge
Assignee: Dynamit Nobel AG
•
Filing: 1965-01-06
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Granted: 1967-09-05
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Expires: 1985-01-06
Abstract
No abstract record available.
Inventors
- 👤 Stadler Hans
- 👤 Gawlick Heinz
- 👤 Umbach Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:18
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/067; F42B5/26; F42B5/30; F42B8/00; F42B8/02; F42B8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A CARTRIDGE FOR FIRING OVER SHORT DISTANCES, COMPRISING A ONE-PIECE STRUCTURE OF PLASTIC MATERIAL AND INCLUDING A SUBSTANTIALLY TUBULAR CARTRIDGE CASE, A BULLET PORTION AND A SUBSTANTIALLY TUBULAR NECK PORTION CONNECTING THE CARTRIDGE CASE WITH THE BULLET PORTION, PROPELLANT POWDER WITHIN SAID CARTRIDGE CASE, A BOTTOM PIECE CLOSING THE REARWARD END OF SAID CARTRIDGE CASE, MEANS EFFECTIVELY CONSTITUTING BETWEEN THE REARWARD END OF THE BULLET PORTION AND THE FORWARD END OF THE NECK PORTION A SEPARATING ZONE WHERE THE BULLET PORTION SEPARATES FROM THE NECK PORTION UPON FIRING OF THE CARTRIDGE, AND MEANS IN SAID NECK PORTION EFFECTIVELY CONSTITUTING A PLURALITY OF BURSTING GROOVES SUBSTANTIALLY EXTENDING IN THE DIRECTION OF THE CARTRIDGE AXIS OPERABLE TO READILY BURST OPEN THROUGHOUT THEIR LENGTHS AND QUICKLY RELEASE THE GASES PRODUCED BY THE IGNITION OF SAID PROPELLANT POWDER FOR EQUALIZING THE PRESSURE WITHIN SAID CARTRIDGE CASE AND OUTSIDE SAID CARTRIDGE CASE IMMEDIATELY AFTER SAID BULLET PORTION SEPARATES FROM SAID NECK PORTION.
Claim 2
Dependent Claim
157 words
A CARTRIDGE FOR FIRING OVER SHORT DISTANCES, COMPRISING A ONE-PIECE STRUCTURE OF PLASTIC MATERIAL AND INCLUDING A SUBSTANTIALLY TUBULAR CARTRIDGE CASE, A BULLET PORTION AND A SUBSTANTIALLY TUBULAR NECK PORTION CONNECTING THE CARTRIDGE CASE WITH THE BULLET PORTION, PROPELLANT POWDER WITHIN SAID CARTRIDGE CASE, A BOTTOM PIECE CLOSING THE REARWARD END OF SAID CARTRIDGE CASE, MEANS EFFECTIVELY CONSTITUTING BETWEEN THE REARWARD END OF THE BULLET PORTION AND THE FORWARD END OF THE NECK PORTION A SEPARATING ZONE WHERE THE BULLET PORTION SEPARATES FROM THE NECK PORTION UPON FIRING OF THE CARTRIDGE, AND MEANS IN SAID NECK PORTION EFFECTIVELY CONSTITUTING A PLURALITY OF BURSTING GROOVES SUBSTANTIALLY EXTENDING IN THE DIRECTION OF THE CARTRIDGE AXIS OPERABLE TO READILY BURST OPEN THROUGHOUT THEIR LENGTHS AND QUICKLY RELEASE THE GASES PRODUCED BY THE IGNITION OF SAID PROPELLANT POWDER FOR EQUALIZING THE PRESSURE WITHIN SAID CARTRIDGE CASE AND OUTSIDE SAID CARTRIDGE CASE IMMEDIATELY AFTER SAID BULLET PORTION SEPARATES FROM SAID NECK PORTION.
References Cited (Backward Citations)
US3146712A
Cited
FR1269442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |