US3610153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-contained delay squib
Assignee: United States Department of the Army
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Filing: 1969-01-08
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Granted: 1971-10-05
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Expires: 1989-01-08
Abstract
Abstract An electronic delay squib or initiator which contains the electronic delay circuit and the power supply as an integral part of the device. Starting time for the delay circuit is controlled by a switch which may be mechanical, electrical, or chemical as convenient or required. For convenience, the delay circuit, battery and switch arrangement may be made as an adapter and placed on existing electroexplosive devices. Closing of the associated switch places the power supply across a resistancecapacitance timing delay circuit which triggers a solid state electron device to place the power source across the explosive load.
Inventors
- 👤 Robert E Betts
- 👤 David R Dreitzler
- 👤 Nathan P Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:42
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; F42D1/045; F42D1/05
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A self-contained electric delay squib assembly comprising: a power source; an electronic delay circuit; means for switching said delay circuit across said power source; a squib load circuit connected as an output to said delay circuit for activation thereby; said delay circuit including a series connected resistor and capacitor, a silicon controlled rectifier, and a zener diode; the cathode gate of said silicon controlled rectifier being connected through said diode to a common point between said seriesed resistor and capacitor, the cathode of said silicon controlled rectifier being connected to the other side of said capacitor; said squib load having a firing bridgewire connected as an output to said delay circuit, a first lead of said bridgewire being connected to the anode of said silicon controlled rectifier and a second lead being connected to the other side of said resistor for activation thereof by said delay circuit.
Claim 2
Dependent Claim
147 words
A self-contained electric delay squib assembly comprising: a power source; an electronic delay circuit; means for switching said delay circuit across said power source; a squib load circuit connected as an output to said delay circuit for activation thereby; said delay circuit including a series connected resistor and capacitor, a silicon controlled rectifier, and a zener diode; the cathode gate of said silicon controlled rectifier being connected through said diode to a common point between said seriesed resistor and capacitor, the cathode of said silicon controlled rectifier being connected to the other side of said capacitor; said squib load having a firing bridgewire connected as an output to said delay circuit, a first lead of said bridgewire being connected to the anode of said silicon controlled rectifier and a second lead being connected to the other side of said resistor for activation thereof by said delay circuit.
Claim 3
Dependent Claim
65 words
A delay squib assembly as set forth in claim 1 wherein said switching means includes a normally open set of leads between a first side of said power source and said delay circuit, said normalLy open leads being closed by said switching means to activate the squib assembly, a second side of said power source being connected to the second lead of said bridge wire.
Claim 4
Dependent Claim
133 words
An electronic delay squib adapter for attachment to and firing of a squib and comprising a connector assembly for mating with a squib and completing electrical circuits thereto; a direct-current power source; an electronic timing delay circuit; switching means for connecting said delay circuit across said power source; a pair of output leads for electrically connecting said adapter to said squib; and wherein said delay circuit includes a silicon-controlled rectifier and a series connected resistor and capacitor; said rectifier having a cathode gate connected to a common point between said resistor and capacitor and having a cathode thereof connected to the other side of said capacitor; an anode of said rectifier being connected to one of said output leads, and the other output lead being connected to the other side of said resistor.
Claim 5
Dependent Claim
133 words
An electronic delay squib adapter for attachment to and firing of a squib and comprising a connector assembly for mating with a squib and completing electrical circuits thereto; a direct-current power source; an electronic timing delay circuit; switching means for connecting said delay circuit across said power source; a pair of output leads for electrically connecting said adapter to said squib; and wherein said delay circuit includes a silicon-controlled rectifier and a series connected resistor and capacitor; said rectifier having a cathode gate connected to a common point between said resistor and capacitor and having a cathode thereof connected to the other side of said capacitor; an anode of said rectifier being connected to one of said output leads, and the other output lead being connected to the other side of said resistor.
Claim 6
Dependent Claim
56 words
An adapter as set forth in claim 3 wherein said power source is connected on one side to the cathode of said rectifier and on the other side through said switching means to the second output lead; and said connector assembly, power source, delay circuit, switching means, and output leads are contained within the same housing.
Claim 7
Dependent Claim
68 words
A squib adapter as set forth in claim 4 wherein said switching means is a squib switch having two output wires and two input wires; one of said switch output wires being connected to said power source and the other being connected to said second output lead; said switch being responsive to an input signal to close a contact between the output wires for activating the delay circuit.
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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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |