US4098193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear and corrosion reducing additive for gun propellants
Assignee: United States Department of the Army
•
Filing: 1976-09-08
•
Granted: 1978-07-04
•
Expires: 1996-09-08
Abstract
Abstract The interior surfaces of gun barrels are protected from wear and corrosion by applying a laminar additive of an organic compound to a gun propellant in such a manner that the heat generated by firing of the gun causes the compound to decompose thereby evolving gaseous products which buffer said interior surfaces from the corrosive and wearing effects of the combustion products of the propellant.
Inventors
- 👤 Michael A. Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:34
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/24; C; C06; C06B; C06B23/00; C06B23/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
A method of protecting the interior surfaces of gun barrels from wear and corrosion, which comprises: applying an unfoamed laminar sheath comprising poly(2-methyl-5-vinyltetrazole) to a gun propellant in such a manner that the heat generated by firing of the gun causes the compound to decompose thereby evolving gaseous products which buffer said interior surfaces from the corrosive and wearing effects of the combustion products of the propellant.
Claim 2
Independent Claim
67 words
A method of protecting the interior surfaces of gun barrels from wear and corrosion, which comprises: applying an unfoamed laminar sheath comprising poly(2-methyl-5-vinyltetrazole) to a gun propellant in such a manner that the heat generated by firing of the gun causes the compound to decompose thereby evolving gaseous products which buffer said interior surfaces from the corrosive and wearing effects of the combustion products of the propellant.
Claim 3
Dependent Claim
95 words
Ammunition comprising a cartridge case, a projectile positioned at an open end of said cartridge case, an explosive charge within said cartridge case for generating propellant gases to propel said projectile through a bore of a gun barrel in which the ammunition is used, and an unfoamed laminar sheath comprising poly(2-methyl-5-vinyltetrazole) disposed around said charge for generating gases, which buffer the inner surfaces of the gun barrel from the corrosive and wearing effects of the combustion products of the propellant by providing a less corrosive atmosphere next to the inner surfaces of the gun barrel.
Claim 4
Dependent Claim
95 words
Ammunition comprising a cartridge case, a projectile positioned at an open end of said cartridge case, an explosive charge within said cartridge case for generating propellant gases to propel said projectile through a bore of a gun barrel in which the ammunition is used, and an unfoamed laminar sheath comprising poly(2-methyl-5-vinyltetrazole) disposed around said charge for generating gases, which buffer the inner surfaces of the gun barrel from the corrosive and wearing effects of the combustion products of the propellant by providing a less corrosive atmosphere next to the inner surfaces of the gun barrel.
References Cited (Backward Citations)
US2244705A
Cited
US2407037A
Cited
US2346124A
Cited
US3209689A
Cited
US3046168A
Cited
US3332353A
Cited
US3148620A
Cited
US3204558A
Cited
US3403626A
Cited
US3707411A
Cited
US3877374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |