US3658009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safe arm initiator
Assignee: Lockheed Martin Corp
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Filing: 1969-05-08
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Granted: 1972-04-25
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Expires: 1989-05-08
Abstract
Abstract An initiator in which the igniter is separated from the output charge by a rotor of magnetic material. The rotor provides an ignition path between the igniter and the output charge only when the rotor is rotated into an armed position. The rotor is normally magnetically restrained in a safe position, and is rotated into its armed position by the application of an electrical arming signal to an electromagnetic coil acting upon the rotor.
Inventors
- 👤 Richard L Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:40
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/18; F42C15/188; F42C15/192; F42C13/00; F42C13/08; F42C15/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A safe/arm initiator comprising: a housing; a permanent magnetic rotor rotatably mounted in said housing; said rotor having an ignition lead extending therethrough; an igniter in said housing adjacent said rotor; an output charge adjacent said rotor and spaced from said igniter; said ignition lead being operatively interposed between said igniter and said output charge upon the rotation of said rotor into an armed position; magnetic path means fixed in said housing around said rotor magnetically coupled to said rotor continuously magnetically urging said rotor out of said armed position; and a non-magnetic material field coil in said housing magnetically coupled to said rotor and excitable by an arming signal applied thereto to overcome said magnetic path means by a stronger electro magnetic force acting angularly thereto and magnetically rotate said rotor into said armed position; said rotor being magnetically rotated into and maintained in said armed position by the application of said arming signal to said field coil until said arming signal is removed; said rotor being magnetically rotated out of said armed position and maintained out of said armed position by said magnetic path means automatically upon the removal of said arming signal from said field coil.
Claim 2
Dependent Claim
199 words
A safe/arm initiator comprising: a housing; a permanent magnetic rotor rotatably mounted in said housing; said rotor having an ignition lead extending therethrough; an igniter in said housing adjacent said rotor; an output charge adjacent said rotor and spaced from said igniter; said ignition lead being operatively interposed between said igniter and said output charge upon the rotation of said rotor into an armed position; magnetic path means fixed in said housing around said rotor magnetically coupled to said rotor continuously magnetically urging said rotor out of said armed position; and a non-magnetic material field coil in said housing magnetically coupled to said rotor and excitable by an arming signal applied thereto to overcome said magnetic path means by a stronger electro magnetic force acting angularly thereto and magnetically rotate said rotor into said armed position; said rotor being magnetically rotated into and maintained in said armed position by the application of said arming signal to said field coil until said arming signal is removed; said rotor being magnetically rotated out of said armed position and maintained out of said armed position by said magnetic path means automatically upon the removal of said arming signal from said field coil.
References Cited (Backward Citations)
US2978982A
Cited
US3500747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |