US4404887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recoil reducer
Assignee: Hughes Missile Systems Co
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Filing: 1982-06-07
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Granted: 1983-09-20
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Expires: 2002-06-07
Abstract
Abstract A missile launcher tube from which a missile is fired from a forward end causing gases to exit out the aft, or exhaust gas, end of a launcher tube in which the aft end is provided with a conical surface (flare) forming a nozzle so that as the missile exits from the forward end, a forward pressure force created by the exhaust gas acting on the conical surface as the exhaust gas exits from the aft end opposes and reduces an aft end directed recoil force. The conical nozzle is located entirely within the outer surface of the launcher tube so that the launcher tube envelope is not disturbed.
Inventors
- 👤 Edward T. Piesik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:05
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04; F41F3/045; F41F3/0455; F41A; F41A1/00; F41A1/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
In a missile launcher for filing self propelled missiles which generate an internal exhaust gas over pressure within said launcher upon firing, a recoil reducer comprising: a single wall tubular housing having a forward end from which the missile exits upon firing and an after end from which missile exhaust gases are emitted, the wall of the housing having any inner cylindrical surface and an outer cylindrical surface, a truncated conical surface formed in the wall of the housing at its after end, and wherein the conical surface extends from the after end of the outer wall surface to the inner wall surface at an angle between 10 and 20 degrees with respect to the outer wall surface, thus forming an outwardly flared surface against which the missile exhaust gases impinge when exiting the housing.
Claim 2
Dependent Claim
135 words
In a missile launcher for filing self propelled missiles which generate an internal exhaust gas over pressure within said launcher upon firing, a recoil reducer comprising: a single wall tubular housing having a forward end from which the missile exits upon firing and an after end from which missile exhaust gases are emitted, the wall of the housing having any inner cylindrical surface and an outer cylindrical surface, a truncated conical surface formed in the wall of the housing at its after end, and wherein the conical surface extends from the after end of the outer wall surface to the inner wall surface at an angle between 10 and 20 degrees with respect to the outer wall surface, thus forming an outwardly flared surface against which the missile exhaust gases impinge when exiting the housing.
Claim 3
Dependent Claim
40 words
A recoil reducer as recited in claim 1, wherein: the conical surface extends from the after end of the outer wall surface to the inner wall surface at an angle of 18 degrees with respect to the outer wall surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |