Patent US3665860A successfully refreshed from Google Patents.
US3665860A
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US
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Detector
Assignee: United States Department of the Navy
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Filing: 1970-12-24
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Granted: 1972-05-30
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Expires: 1990-12-24
Abstract
Abstract A detector having an electronic arming delay timer, an antidisturbance firing mechanism, and a disconnect firing mechanism, wherein either firing mechanism is capable of causing detonation of a squib.
Inventors
- 👤 Gaylon L West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:48
CPC Classifications
F; F42; F42C; F42C21/00; F42C11/00; F42C11/001; F42C11/007; F42C15/00; F42C15/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A detector for detecting disturbances resulting in movement or electrical circuit disconnection, comprising: means for initiating an electronic time delay; an electronic time delay to delay arming the detector for a predetermined period of time; antidisturbance means for actuating a firing circuit in response to a disturbance resulting in movement of said antidisturbance means at any time after said predetermined period of time; circuit means fOr actuating said firing circuit in response to an electrical disconnection in said circuit means at any time after said predetermined period of time; and a firing circuit coupled to said antidisturbance means and said circuit means, wherein said firing circuit provides an electric signal output when actuated by said antidisturbance means or said circuit means.
Claim 2
Dependent Claim
121 words
A detector for detecting disturbances resulting in movement or electrical circuit disconnection, comprising: means for initiating an electronic time delay; an electronic time delay to delay arming the detector for a predetermined period of time; antidisturbance means for actuating a firing circuit in response to a disturbance resulting in movement of said antidisturbance means at any time after said predetermined period of time; circuit means fOr actuating said firing circuit in response to an electrical disconnection in said circuit means at any time after said predetermined period of time; and a firing circuit coupled to said antidisturbance means and said circuit means, wherein said firing circuit provides an electric signal output when actuated by said antidisturbance means or said circuit means.
Claim 3
Dependent Claim
50 words
The detector of claim 1 wherein said firing circuit comprises; a first silicon controlled rectifier coupled to said antidisturbance means and said circuit means, and a second silicon controlled rectifier wherein the gate of said second silicon controlled rectifier is coupled to the cathode of said first silicon controlled rectifier.
Claim 4
Dependent Claim
79 words
The detector of claim 1 wherein said circuit means comprises; a field effect transistor, a break wire coupled to the gate of said field effect transistor, a capacitor coupled to the gate of said field effect transistor in parallel with said break wire, a zener diode coupled to the drain of said field effect transistor, and a voltage divider network coupled to said zener diode, such that when said break wire is disconnected said firing circuit will be actuated.
Claim 5
Dependent Claim
50 words
The detector of claim 3 wherein said firing circuit comprises; a first silicon controlled rectifier coupled to said antidisturbance means and said circuit means, and a second silicon controlled rectifier wherein the gate of said second silicon controlled rectifier is coupled to the cathode of said first silicon controlled rectifier.
References Cited (Backward Citations)
US3343493A
Cited
US3531691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |