Patent US4023499A successfully refreshed from Google Patents.
US4023499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuse for rifle-grenade
Assignee: FN Herstal SA
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Filing: 1975-05-01
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Granted: 1977-05-17
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Expires: 1995-05-01
Abstract
Abstract A fuse of the type disclosed in U.S. patent application 476,194 has a rod passing through a supporting disc and is axially shifted for releasing a rotor mechanism, it is provided with a head having a diameter larger than that of the said rod and which is in blocking relation to the rotor, said disc being blocked by a stationary disc forming a stop in fixed position and being locally deformed by the axial shifting of the said rod when the fuse is armed.
Inventors
- 👤 Rene M. Chavee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:22
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/28; F42C15/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
164 words
In a fuse device having a movable bolt movable to an arming position to release an inertia striker, said inertia striker being arranged to strike a detonator upon impact of said device with a target, a rotor carrying a pyrotechnic charge responsive to said detonator but in a first rotary position wherein said charge is remote from said detonator and being spring biased toward a second position wherein said charge is adjacent said detonator, the improvement comprising: a rod axially slidably mounted on said device and having a head at one end engaging said rotor to lock the same in said first position, the other end of said rod being in the path of movement of said bolt; and a bendable stationary member overlying said head to hold the same in said rotor locking position whereby movement of said bolt to said arming position enforces movement of said rod and head out of rotor locking position by bending and deflecting said bendable stationary member.
Claim 2
Dependent Claim
164 words
In a fuse device having a movable bolt movable to an arming position to release an inertia striker, said inertia striker being arranged to strike a detonator upon impact of said device with a target, a rotor carrying a pyrotechnic charge responsive to said detonator but in a first rotary position wherein said charge is remote from said detonator and being spring biased toward a second position wherein said charge is adjacent said detonator, the improvement comprising: a rod axially slidably mounted on said device and having a head at one end engaging said rotor to lock the same in said first position, the other end of said rod being in the path of movement of said bolt; and a bendable stationary member overlying said head to hold the same in said rotor locking position whereby movement of said bolt to said arming position enforces movement of said rod and head out of rotor locking position by bending and deflecting said bendable stationary member.
Claim 3
Dependent Claim
27 words
A fuse device as defined in claim 1 wherein said rotor is provided with a peripheral notch into which said head extends when in rotor locking position.
Claim 4
Dependent Claim
34 words
A fuse device as defined in claim 2 wherein the outer periphery of said rotor comprises a toothed crown, said peripheral notch being defined by a space between adjacent teeth of said toothed crown.
References Cited (Backward Citations)
US2371151A
Cited
GB191310219A
Cited
GB191508708A
Cited
US3439615A
Cited
FR1198830A
Cited
US3157125A
Cited
US3410214A
Cited
US3388666A
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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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |