Patent US4202271A successfully refreshed from Google Patents.
US4202271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safe and arm device
Assignee: United States Department of the Army
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Filing: 1978-07-25
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Granted: 1980-05-13
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Expires: 1998-07-25
Abstract
Abstract A safe and arming device used with electrically operated fuses of a missilend including a housing with an acceleration responsive device rotatably mounted therein between safe and arming positions and biased into the safe position by a spring and actuatable to the arming position when accelerated at a predetermined rate, latching means which latches the acceleration device in the armed position and reset means which releases the latching means to allow the device to be reset into the safe position.
Inventors
- 👤 John H. Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:07
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/44; F42C15/18; F42C15/188
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A safe and arming device comprising a housing having an unbalanced rotor rotatably mounted by a rotor shaft in said housing; said shaft having spring biasing means biasing said rotor to a safe position, said rotor being unbalanced and rotatable to an arming position; latching means pivotably mounted in said housing and engaging said rotor when said rotor has been rotated to said arming position for latching said rotor in said arming position; and resafe means mounted in said housing and engageable with said latching means for rotating said latching means away from said rotor to unlatch said rotor and allow said spring means to bias said rotor into said safe position.
Claim 2
Dependent Claim
112 words
A safe and arming device comprising a housing having an unbalanced rotor rotatably mounted by a rotor shaft in said housing; said shaft having spring biasing means biasing said rotor to a safe position, said rotor being unbalanced and rotatable to an arming position; latching means pivotably mounted in said housing and engaging said rotor when said rotor has been rotated to said arming position for latching said rotor in said arming position; and resafe means mounted in said housing and engageable with said latching means for rotating said latching means away from said rotor to unlatch said rotor and allow said spring means to bias said rotor into said safe position.
Claim 3
Dependent Claim
18 words
A safe and arming device as set forth in claim 1, wherein said rotor has detonators mounted therein.
Claim 4
Dependent Claim
22 words
A safe and arming device as set forth in claim 2, wherein said spring biasing means is adjustably mounted in said housing.
Claim 5
Dependent Claim
48 words
A safe and arming device as set forth in claim 3, wherein said shaft has one end with tool engaging means for rotating said shaft against the bias of said spring means to check the torque required to rotate said shaft from the safe to the arming position.
Claim 6
Dependent Claim
46 words
A safe and arming device as set forth in claim 3, wherein said housing has an end cover with a sight window, and said shaft has indica thereon that can be viewed through said sight window to determine the position of said rotor in said housng.
Claim 7
Dependent Claim
32 words
A safe and arming device as set forth in claim 3, wherein said rotor has a groove therein for preventing sympathetic detonation of the second detonator when the first detonator is fired.
Claim 8
Dependent Claim
37 words
A safe and arming device as set forth in claim 6, wherein said detonators point into said housing when in the safe position and are aligned with output ports in said housing when in said arming position.
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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) | 1983-05-13 | 1983-11-12 | 1984-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-13 | 1987-11-12 | 1988-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-13 | 1991-11-12 | 1992-05-13 | $7700.00 | Window Closed / Lapsed |