US3882779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive projectile
Assignee: Salgad
•
Filing: 1973-03-21
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Granted: 1975-05-13
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Expires: 1993-03-21
Abstract
Abstract An explosive projectile such as a grenade for firing from a mortar comprises an annular plastic body surrounding an explosive charge with the outer surface of the plastic body forming a part of the external surface of the projectile. The plastic body includes fragments embedded therein, and a fibrous material either randomly oriented or in the form of a net is embedded in the material of the plastic body adjacent the external surface. Optionally, a ring member having guide elements on the external surface thereof may be embedded in the external surface of the plastic body.
Inventors
- 👤 Amos Frostig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:05
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/20; F42B12/22; F42B12/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
321 words
A FIN-STABILIZED PROJECTILE CONSISTING ESSENTIALLY OF A. A FRAME STRUCTRUE INCLUDING AN ELONGATED METALLIC TUBULAR MEMBER, A CONICAL HEAD PORTION SECURED TO ONE END OF SAID TUBULAR MEMBER AND A CYLINDRICAL TAIL PORTION HAVING A PLURALITY OF RADICALLY PROJECTING FINS AND SECURED TO THE OPPOSITE END OF SAID TUBULAR MEMBER, THE DIAMETERS OF SAID HEAD AND TAIL PORTIONS ADJACENT SAID TUBULAR MEMBER BEING GREATER THAN THE CROSS-SECTION OF SAID TUBULAR MEMBER; B. AN EXPLOSIVE CHARGE IN THE INTERIOR OF SAID TUBULR MEMBER; C. AN ANNULAR SOLID BODY SURROUNDING AND BEING SECURED TO SAID TUBULAR MEMBER AND EXTENDING BETWEEN SAID HEAD AND TAIL PORTIONS, THE CIRCUMFERENTIAL SURFACE OF SAID BODY AT THE OPPOSITE ENDS THEREOF HAVING SUBSTANTIALLY THE SAME DIAMETER AS THE ADJACENT PARTS OF SAID HAD AND TAIL PROTIONS RESPECTIVELY, AND A PROTION OF THE CIRCUMFERENTIAL SURFACE SPACED FROM AND INTERMEDIATE THE ENDS OF SAID BODY HAVING A GREATER DIAMETER THAN EITHER END THEREOF AND A GREATER DIAMETER THAN THE RADIAL LENGTH OF SAID FINS FROM THE AXIS OF SAID TAIL PORTION, SAID ANNULAR BODY COMPRISING A MULTIPLICITY OF FRAGMENTS UNIFORMLY DISTRIBUTED AND EMBEDDED IN A SYNTHETIC RESIN; D. A PROTECTIVE, THIN, FIBROUS, REINFORCING, POROUS, NET WEB BEDDED IN THE SURFACE OF SAID ANNULAR BODY, THE COMPOSITION OF SAID WEB BEING SELECTED FROM THE GROUP CONSISTING O SISTING OF TEXTILE, GLASS AND METAL; AND E. SAID INTERMEDIATE PORTION OF SAID BODY, SAIID ANNULAR RING DIAMETER COMPRISING A NARROW ANNULAR RING MEMBER EMBEDDED IN THE SURFACE OF SAID BODY, SAID ANNULAR RING MEMBER BEING SELECTED FROM THE GROUP CONSISTING OF METAL AND PLASTIC AND INCLUDING A PLURALITY OF ANNULAR GROOVES IN THE CIRCUMFERENTIAL SURFACE THEREOF PROVIDING GUIDE ELEMENTS FOR SAID PROJECTILE; F. SAID SYNTHETIC RESIN OF SAID BODY AND SAID THIN POROUS WEB GIVING NO APPRECIABLE RESISTANCE AND THE AXIAL LENGTH OF SAID RING MEMBER BEING INSUFFICIENT TO GIVE APPRECIABLE RESISTANCE TO ACCELERATION OF SAID FRAGMENTS FOLLOWING DETONATION OF SAID EXPLSOIVE CHARGE.
Claim 2
Dependent Claim
321 words
A FIN-STABILIZED PROJECTILE CONSISTING ESSENTIALLY OF A. A FRAME STRUCTRUE INCLUDING AN ELONGATED METALLIC TUBULAR MEMBER, A CONICAL HEAD PORTION SECURED TO ONE END OF SAID TUBULAR MEMBER AND A CYLINDRICAL TAIL PORTION HAVING A PLURALITY OF RADICALLY PROJECTING FINS AND SECURED TO THE OPPOSITE END OF SAID TUBULAR MEMBER, THE DIAMETERS OF SAID HEAD AND TAIL PORTIONS ADJACENT SAID TUBULAR MEMBER BEING GREATER THAN THE CROSS-SECTION OF SAID TUBULAR MEMBER; B. AN EXPLOSIVE CHARGE IN THE INTERIOR OF SAID TUBULR MEMBER; C. AN ANNULAR SOLID BODY SURROUNDING AND BEING SECURED TO SAID TUBULAR MEMBER AND EXTENDING BETWEEN SAID HEAD AND TAIL PORTIONS, THE CIRCUMFERENTIAL SURFACE OF SAID BODY AT THE OPPOSITE ENDS THEREOF HAVING SUBSTANTIALLY THE SAME DIAMETER AS THE ADJACENT PARTS OF SAID HAD AND TAIL PROTIONS RESPECTIVELY, AND A PROTION OF THE CIRCUMFERENTIAL SURFACE SPACED FROM AND INTERMEDIATE THE ENDS OF SAID BODY HAVING A GREATER DIAMETER THAN EITHER END THEREOF AND A GREATER DIAMETER THAN THE RADIAL LENGTH OF SAID FINS FROM THE AXIS OF SAID TAIL PORTION, SAID ANNULAR BODY COMPRISING A MULTIPLICITY OF FRAGMENTS UNIFORMLY DISTRIBUTED AND EMBEDDED IN A SYNTHETIC RESIN; D. A PROTECTIVE, THIN, FIBROUS, REINFORCING, POROUS, NET WEB BEDDED IN THE SURFACE OF SAID ANNULAR BODY, THE COMPOSITION OF SAID WEB BEING SELECTED FROM THE GROUP CONSISTING O SISTING OF TEXTILE, GLASS AND METAL; AND E. SAID INTERMEDIATE PORTION OF SAID BODY, SAIID ANNULAR RING DIAMETER COMPRISING A NARROW ANNULAR RING MEMBER EMBEDDED IN THE SURFACE OF SAID BODY, SAID ANNULAR RING MEMBER BEING SELECTED FROM THE GROUP CONSISTING OF METAL AND PLASTIC AND INCLUDING A PLURALITY OF ANNULAR GROOVES IN THE CIRCUMFERENTIAL SURFACE THEREOF PROVIDING GUIDE ELEMENTS FOR SAID PROJECTILE; F. SAID SYNTHETIC RESIN OF SAID BODY AND SAID THIN POROUS WEB GIVING NO APPRECIABLE RESISTANCE AND THE AXIAL LENGTH OF SAID RING MEMBER BEING INSUFFICIENT TO GIVE APPRECIABLE RESISTANCE TO ACCELERATION OF SAID FRAGMENTS FOLLOWING DETONATION OF SAID EXPLSOIVE CHARGE.
References Cited (Backward Citations)
US2564751A
Cited
US3298308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |