Patent US5375529A successfully refreshed from Google Patents.
US5375529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefragmenting munitions
Assignee: SNC Industrial Technologies Inc
•
Filing: 1993-04-23
•
Granted: 1994-12-27
•
Expires: 2013-04-23
Abstract
Abstract A projectile for firing from a self-loading firearm is provided that will rmit the self-loading mechanism to function while delivering a targeting projectile of reduced range and striking capacity. These latter characteristics may be varied in accordance with a designer's preference.
Inventors
- 👤 C. Reed Knight, Jr.
- 👤 Michael G. Adkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:04
CPC Classifications
F; F42; F42B; F42B8/00; F42B8/12; F42B8/14; F42B8/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
97 words
A projectile for a self-loading firearm said projectile comprising: (1) a frangible, outer projectile casing having a wall which fragments upon exiting the muzzle of the barrel of a firearm; (2) a dispersible mass contained as a filling within such projectile casing, said mass being finely divided so that it will self-disburse upon fragmentation of the projectile casing; and (3) a ballistically stable targeting projectile the entire part of which is located rearward of the aforesaid dispersible mass, the overall mass of said projectile being sufficient to ensure the operation of the self-loading function of said firearm.
Claim 2
Dependent Claim
97 words
A projectile for a self-loading firearm said projectile comprising: (1) a frangible, outer projectile casing having a wall which fragments upon exiting the muzzle of the barrel of a firearm; (2) a dispersible mass contained as a filling within such projectile casing, said mass being finely divided so that it will self-disburse upon fragmentation of the projectile casing; and (3) a ballistically stable targeting projectile the entire part of which is located rearward of the aforesaid dispersible mass, the overall mass of said projectile being sufficient to ensure the operation of the self-loading function of said firearm.
Claim 3
Dependent Claim
36 words
A projectile as in claim 1 wherein a portion of said dispersible mass located within the forward, nose end of the casing is in a compacted state to provide support for the casing nose and wall.
Claim 4
Dependent Claim
16 words
A projectile as in claim 2 wherein said dispersible mass predominantly consists of finely divided tungsten.
Claim 5
Dependent Claim
33 words
A projectile as in claim 1 wherein the targeting projectile is of full-calibre, having a diameter sufficient to engage with rifling in the inner surface of the barrel of said weapon upon firing.
Claim 6
Dependent Claim
29 words
A projectile as in claim 4 wherein the outside diameter of the targeting projectile is defined by a protruding rim which serves as a barrel-engaging portion of such projectile.
Claim 7
Dependent Claim
57 words
A projectile as in claim 4 wherein the disintegrating capacity of the casing is enhanced by providing a full-calibre casing with a diameter which provides for positive engagement of the casing with the rifling within the barrel whereby, upon firing, the casing becomes scored and thereby disintegrates more readily under the centrifugal forces imparted by the rifling.
Claim 8
Dependent Claim
40 words
A projectile as in claim 1 wherein the targeting projectile is provided within a sidewall in the general form of a cylinder that is open at its forward end and is closed by a capping portion at its rearward end.
Claim 9
Dependent Claim
21 words
A projectile as in claim 7 wherein said rearward end is provided with a protruding rim that functions as an air-brake.
Claim 10
Dependent Claim
41 words
A projectile as in claim 7 wherein the forward end of the targeting projectile is directly exposed to the dispersible mass and a portion of such mass is contained within said sidewall to serve as a filling for the targeting projectile.
Claim 11
Dependent Claim
51 words
A projectile as in claim 9 wherein the targeting projectile is ballistically balanced to maintain said forward end oriented in the direction of travel of such targeting projectile and thereby contain and carry said portion of the dispersible mass within its cylindrical walls after the projectile casing fragments towards a target.
Claim 12
Dependent Claim
15 words
A projectile as in claim 1 wherein said dispersible mass predominantly consists of finely-divided tungsten.
Claim 13
Dependent Claim
16 words
A projectile as in claim 7 wherein said dispersible mass predominantly consists of finely divided tungsten.
Claim 14
Dependent Claim
16 words
A projectile as in claim 10 wherein said dispersible mass predominantly consists of finely divided tungsten.
References Cited (Backward Citations)
US3170405A
Cited
US3338167A
Cited
US3433157A
Cited
US3435769A
Cited
DE1578107A1
Cited
GB1157555A
Cited
FR1550946A
Cited
CH487389A
Cited
US3916795A
Cited
US3952662A
Cited
US3983817A
Cited
US4030421A
Cited
BE840898A
Cited
US4128059A
Cited
US4895076A
Cited
US5035183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |