Patent US3601061A successfully refreshed from Google Patents.
US3601061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammunition for high firing rate, light gas hypervelocity gun
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1969-01-30
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Granted: 1971-08-24
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Expires: 1989-01-30
Abstract
Abstract Secondary ammunition for a high firing rate, light gas hypervelocity gun secondary ammunition having a hollow open inlet case containing a projectile. The gun has the primary and the secondary breech mechanisms spaced along a barrel containing a bore for successively transporting in unison to firing position, a primary ammunition round containing a propellent charge and a piston and a secondary ammunition piece, and means for introducing a gas under pressure into the bore between the breech mechanisms, whereby when the primary round is fired its piston is propelled forwardly through the bore to a terminal position within the secondary breech mechanism to compress the gas between the piston and the projectile of the secondary ammunition and thereby effect expulsion of the projectile from the gun at a hypervelocity. The piston and secondary ammunition core are from the gun during subsequent operation of the breech mechanisms to transport the next primary and secondary ammunition to firing position.
Inventors
- 👤 David Dardick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:53
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F41; F41A; F41A9/00; F41A9/01; F41A9/24; F41A9/26; F41A9/27; F41B; F41B11/00; F42B5/045; F42B5/067; F42B5/073
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
Secondary ammunition for a hypervelocity gun of the character described, comprising: an outer sleevelike case having a central longitudinally continuous bore opening through the front and rear ends of said sleeve; a projectile within the front end of said bore adapted to be propelled forwardly from said bore by pressurizing with gas the portion of said bore behind said projectile; projectile-restraining means within the forward end of said bore for releasably restraining said projectile against forward movement from said bore; said projectile-restraining means comprising a restraining sleeve having a central opening receiving said projectile and defining a rearwardly presented shoulder about the rear end of said sleeve opening; and the rear end of said projectile having a deformable lip engaging said shoulder to releasably restrain said projectile against forward movement through said sleeve opening.
Claim 2
Dependent Claim
134 words
Secondary ammunition for a hypervelocity gun of the character described, comprising: an outer sleevelike case having a central longitudinally continuous bore opening through the front and rear ends of said sleeve; a projectile within the front end of said bore adapted to be propelled forwardly from said bore by pressurizing with gas the portion of said bore behind said projectile; projectile-restraining means within the forward end of said bore for releasably restraining said projectile against forward movement from said bore; said projectile-restraining means comprising a restraining sleeve having a central opening receiving said projectile and defining a rearwardly presented shoulder about the rear end of said sleeve opening; and the rear end of said projectile having a deformable lip engaging said shoulder to releasably restrain said projectile against forward movement through said sleeve opening.
Claim 3
Dependent Claim
94 words
Secondary ammunition for a hypervelocity gun of the character described, comprising: an outer sleevelike case having a central longitudinally continuous bore opening through the front and rear ends of said sleeve; a projectile within the front end of said bore adapted to be propelled forwardly from said bore by pressurizing with gas the portion of said bore behind said projectile; and said case having a generally triangular shape in transverse cross section and convex cylindrically curved sides of equal radii, whereby said ammunition is adapted to be fired in an open chamber breech mechanism.
Claim 4
Dependent Claim
94 words
Secondary ammunition for a hypervelocity gun of the character described, comprising: an outer sleevelike case having a central longitudinally continuous bore opening through the front and rear ends of said sleeve; a projectile within the front end of said bore adapted to be propelled forwardly from said bore by pressurizing with gas the portion of said bore behind said projectile; and said case having a generally triangular shape in transverse cross section and convex cylindrically curved sides of equal radii, whereby said ammunition is adapted to be fired in an open chamber breech mechanism.
References Cited (Backward Citations)
US1395630A
Cited
US2979991A
Cited
US2983223A
Cited
US3185094A
Cited
US3400661A
Cited
US3404598A
Cited
US3452677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |