Patent US4144816A successfully refreshed from Google Patents.
US4144816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Missile security mechanism
Assignee: Mefina SA
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Filing: 1977-03-28
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Granted: 1979-03-20
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Expires: 1997-03-28
Abstract
Abstract A missile security mechanism comprises a sliding rod having two axially spaced-apart grooves, a socket slidably mounted on the rod and having hooks able to engage in one of these grooves then the other, and an inertia-block in the form of a sleeve surrounding and locking the hooks in the groove in which they are engaged. The inertia-block is displaceable by inertia against the action of a biasing spring to free the hooks. A second spring biases the rod towards the socket, the rod being held by a pawl which is movable to free the rod in response to a given displacement of the inertia-block.
Inventors
- 👤 Roger Beuchat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:32
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
A security mechanism for a missile, said mechanism comprising a sliding rod having two axially spaced-apart grooves, a socket slidably mounted on the rod and having hooks able to engage in one of these grooves then the other, and an inertia-block in the form of a sleeve surrounding said hooks to lock them in the groove in which they are engaged, said inertia-block being slidably mounted and biased to the hook-locking position by a first spring and movable under the effect of acceleration of the missile by inertia against the action of the first spring to free the hooks, a second spring biasing the rod in the direction of the socket, and a member for retaining the rod against the action of the second spring, said member being movable to a position freeing the rod in response to a given displacement of said interia-block by inertia under the effect of acceleration of the missile.
Claim 2
Dependent Claim
154 words
A security mechanism for a missile, said mechanism comprising a sliding rod having two axially spaced-apart grooves, a socket slidably mounted on the rod and having hooks able to engage in one of these grooves then the other, and an inertia-block in the form of a sleeve surrounding said hooks to lock them in the groove in which they are engaged, said inertia-block being slidably mounted and biased to the hook-locking position by a first spring and movable under the effect of acceleration of the missile by inertia against the action of the first spring to free the hooks, a second spring biasing the rod in the direction of the socket, and a member for retaining the rod against the action of the second spring, said member being movable to a position freeing the rod in response to a given displacement of said interia-block by inertia under the effect of acceleration of the missile.
Claim 3
Dependent Claim
46 words
A mechanism according to claim 1, in which said member is a pawl cooperating with a shoulder of the rod, said pawl having a ramp-shaped part disposed in the path of the inertia-block in a manner to be moved by the inertia-block to free said shoulder.
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) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |