US4012987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual combustion missile system
Assignee: United States Department of the Army
•
Filing: 1975-09-03
•
Granted: 1977-03-22
•
Expires: 1995-09-03
Abstract
Abstract A missile system with an ogival projectile for operation in a trajectory m a tubular launch tube includes a housing and a slug respectively slidable in the projectile and the housing with the projectile and housing respectively including combustion chambers and pistons enclosing propellant grains therein. The projectile and slug are respectively launched forwardly in the trajectory and rearwardly and the housing is ejected from the projectile responsive to simultaneous ignition of the propellant grains. The piston is ejected from the projectile responsive to continued ignition of the corresponding propellant grain.
Inventors
- 👤 John E. Burkhalter
- 👤 Richard H. Sforzini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:23
CPC Classifications
F; F41; F41A; F41A1/00; F41A1/08; F41A1/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A missile system comprising: A tubular launcher for directing a missile in a trajectory; and A missile disposed for enclosure in said launcher and operation in said trajectory and provided with an ogival projectile and a housing with respective rearend stops, a slug and pairs of pistons and propellant grains disposed for simultaneous ignition; Said projectile and housing including respective combustion chambers with said pistons slidable to retain said propellant grains therein, said housing and slug respectively engaging said pistons, said projectile disposed for propulsion in the trajectory and said slug rearwardly responsive to the simultaneous ignition to control recoil of said launcher.
Claim 2
Dependent Claim
103 words
A missile system comprising: A tubular launcher for directing a missile in a trajectory; and A missile disposed for enclosure in said launcher and operation in said trajectory and provided with an ogival projectile and a housing with respective rearend stops, a slug and pairs of pistons and propellant grains disposed for simultaneous ignition; Said projectile and housing including respective combustion chambers with said pistons slidable to retain said propellant grains therein, said housing and slug respectively engaging said pistons, said projectile disposed for propulsion in the trajectory and said slug rearwardly responsive to the simultaneous ignition to control recoil of said launcher.
Claim 3
Dependent Claim
37 words
A missile system as in claim 1 with the momentum imparted to said slug during launch substantially equal to the combined momentums imparted to said projectile and corresponding piston during launch for minimum recoil of said launcher.
Claim 4
Dependent Claim
22 words
A missile system as in claim 1 with said pistons disposed for respective engagement with said stops responsive to the simultaneous ignition.
Claim 5
Dependent Claim
29 words
A missile system as in claim 1 with the stop of said projectile disposed to rupture for rocket propulsion thereof responsive to continued ignition of the corresponding propellant grain.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |