US4212244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Small arms ammunition
Assignee: Individual
•
Filing: 1977-12-09
•
Granted: 1980-07-15
•
Expires: 1997-12-09
Abstract
Abstract Ammunition for small arms using ring airfoils.
Inventors
- 👤 Abraham Flatau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:22
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/03
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
A composite small caliber cartridge including: a cartridge case for containing a propellant gas source, force transmitting means frictionally held within said cartridge case, and a plurality of projectiles firmly engaged within said force transmitting means, each of said projectiles consisting of an annular shaped hollow ring symmetrical about a center rotation axis and having a circular leading edge and a circular trailing edge, said leading and trailing edges being spaced apart a distance less than the diameter of said ring, said plurality of projectiles in said force transmitting means having said center rotation axes in coincidence whereby rotation of said force transmitting means causes rotation of said projectiles about said coinciding axes.
Claim 2
Dependent Claim
113 words
A composite small caliber cartridge including: a cartridge case for containing a propellant gas source, force transmitting means frictionally held within said cartridge case, and a plurality of projectiles firmly engaged within said force transmitting means, each of said projectiles consisting of an annular shaped hollow ring symmetrical about a center rotation axis and having a circular leading edge and a circular trailing edge, said leading and trailing edges being spaced apart a distance less than the diameter of said ring, said plurality of projectiles in said force transmitting means having said center rotation axes in coincidence whereby rotation of said force transmitting means causes rotation of said projectiles about said coinciding axes.
Claim 3
Dependent Claim
32 words
The structure set forth in claim 1 above, wherein: said force-transmitting means comprises a sabot adapted to separate from said projectiles after leaving a gun muzzle from which said cartridge is fired.
Claim 4
Dependent Claim
36 words
The structure set forth in claim 2 above, wherein: each of said ring projectiles has a center longitudinal axis therethrough and said projectiles are aligned within said sabot in spaced-apart relationship with said center axes coinciding.
Claim 5
Dependent Claim
46 words
The structure set forth in claim 3 above, wherein: said sabot is of elongate cylindrical shape having a center longitudinal axis about which the sabot rotates as it leaves the muzzle of a gun, and said projectile axes coincide with said center axis of said sabot.
References Cited (Backward Citations)
DE308434C
Cited
US1376530A
Cited
FR844987A
Cited
US3598057A
Cited
US3877383A
Cited
US3919799A
Cited
US3980023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |