Patent US3677185A successfully refreshed from Google Patents.
US3677185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arming device
Assignee: United States Department of the Navy
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Filing: 1969-10-13
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Granted: 1972-07-18
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Expires: 1989-10-13
Abstract
Abstract An arming device which requires both air vane rotation of a predetermined duration and target impact in sequence to complete arming. Movement of an arming rotor from an unarmed to an armed position is blocked by a plunger biased from the arming rotor path of movement but prevented from responding to the biasing action by a rotary element in the path of the plunger. The rotary element is freed for movement by the plunger only upon sensing of the sequential occurrence of the air vane rotation of predetermined duration and target impact.
Inventors
- 👤 William H Reams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:56
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/005; F42C1/00; F42C1/02; F42C1/04; F42C15/28; F42C15/295
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
163 words
A delay-arming fuze for an aerial ordnance vehicle comprising a movable arming member having detonating paths formed therein and normally positioned in an out-of-line position with respect to an explosive train; a blocking member comprising an elongate plunger normally disposed in a first position restrainingly contacting said arming member in said out-of-line position; blocking member moving means comprising, a rotatable and axially movable blocking ring normally engaging said plunger on its lower surface and maintaining said plunger in said first position, a rotatable and axially movable striker member coupled to said blocking ring through an elongate stem, said stem connected at one end to said blocking ring by a shear member and connected at the other end to said striker member by a pin projecting into a first bore formed in said striker member cooperating with an elongate longitudinal slot formed in said stem, and means for rotating said striker member, whereby rotation of said striker member causes said blocking ring to rotate.
Claim 2
Dependent Claim
163 words
A delay-arming fuze for an aerial ordnance vehicle comprising a movable arming member having detonating paths formed therein and normally positioned in an out-of-line position with respect to an explosive train; a blocking member comprising an elongate plunger normally disposed in a first position restrainingly contacting said arming member in said out-of-line position; blocking member moving means comprising, a rotatable and axially movable blocking ring normally engaging said plunger on its lower surface and maintaining said plunger in said first position, a rotatable and axially movable striker member coupled to said blocking ring through an elongate stem, said stem connected at one end to said blocking ring by a shear member and connected at the other end to said striker member by a pin projecting into a first bore formed in said striker member cooperating with an elongate longitudinal slot formed in said stem, and means for rotating said striker member, whereby rotation of said striker member causes said blocking ring to rotate.
Claim 3
Dependent Claim
102 words
A delay arming fuze as recited in claim 1 wherein said blocking ring lower surface has formed therein a recessed pocket near the periphery thereof and said first position of said plunger is defined by said pocket being angularly displaced from said plunger, said plunger engaging the blocking ring lower surface, and said second position defined by said pocket being axially aligned with said plunger to receive an end portion of said plunger, whereby upon rotation of said blocking ring, said pocket becomes axially aligned with said plunger and said plunger becomes seated in said pocket thereby moving to said second position.
Claim 4
Dependent Claim
78 words
A delay arming fuze as recited in claim 2 wherein said striker member is biased toward a raised position and is normally prevented from axial movement to said raised position by a fixed lug in contact therewith; said striker member having formed in the peripheral wall thereof a notched-out surface, whereby upon rotation of said striker member, said lug aligns with said notch and said striker member moves upwardly simultaneous with said plunger becoming seated in said pocket.
Claim 5
Dependent Claim
52 words
A delay arming fuze as recited in claim 3 wherein said striker member has a spring biased ball positioned within a second bore formed therein and being normally prevented by said stem from entering said first striker member bore and adapted to enter therein upon said striker member attaining said raised position.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |