US3670653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-powered fuze firing system
Assignee: United States Department of the Navy
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Filing: 1963-10-16
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Granted: 1972-06-20
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Expires: 1983-10-16
Abstract
Abstract 1. A self-powered fuze firing system that will initiate moderate energy wire-bridge detonators comprising: A. PIEZOELECTRIC IMPACT GENERATOR HAVING FIRST AND SECOND ELECTRODES FOR GENERATING AN OUTPUT SIGNAL VOLTAGE WHEN DEFORMED ON IMPACT, B. A TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING, C. SAID PRIMARY WINDING BEING CONNECTED ACROSS SAID IMPACT GENERATOR, D. A DIODE RECTIFIER CONNECTED IN SERIES WITH SAID SECONDARY WINDING AND BEING POLED SO AS TO BLOCK CURRENT FLOW IN SAID SECONDARY WINDING DURING THE TIME A RISING COMPRESSIVE FORCING FUNCTION IS BEING APPLIED TO THE PIEZOELECTRIC IMPACT GENERATOR, E. ELECTRIC CHARGE STORAGE MEANS COUPLED ACROSS SAID SECONDARY WINDING AND SAID RECTIFIER SERIES CONNECTED CIRCUIT, F. AND A DETONATOR CONNECTED IN SERIES WITH A VOLTAGE RESPONSIVE SWITCHING MEANS.
Inventors
- 👤 Wilbur B Lunt
- 👤 Robert A Haskell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:33
CPC Classifications
F; F42; F42C; F42C11/00; F42C11/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A self-powered fuze firing system that will initiate moderate energy wire-bridge detonators comprising: a piezoelectric impact generator having first and second electrodes for generating an output signal voltage when deformed on impact, b. a transformer having a primary winding and a secondary winding, c. said primary winding being connected across said impact generator, d. a diode rectifier connected in series with said secondary winding and being poled so as to block current flow in said secondary winding during the time a rising compressive forcing function is being applied to the piezoelectric impact generator, e. electric charge storage means coupled across said secondary winding and said rectifier series connected circuit, f. and a detonators connected in series with a voltage responsive switching means.
Claim 2
Dependent Claim
122 words
A self-powered fuze firing system that will initiate moderate energy wire-bridge detonators comprising: a piezoelectric impact generator having first and second electrodes for generating an output signal voltage when deformed on impact, b. a transformer having a primary winding and a secondary winding, c. said primary winding being connected across said impact generator, d. a diode rectifier connected in series with said secondary winding and being poled so as to block current flow in said secondary winding during the time a rising compressive forcing function is being applied to the piezoelectric impact generator, e. electric charge storage means coupled across said secondary winding and said rectifier series connected circuit, f. and a detonators connected in series with a voltage responsive switching means.
Claim 3
Dependent Claim
130 words
A self-powered fuze firing system that will initiate moderate energy wire-bridge detonators coMprising: a. a piezoelectric impact generator for generating an output signal voltage when deformed on impact, b. a transformer having a primary winding coupled to said impact generator and having a secondary winding, c. rectifier means connected in series with said secondary winding and having the same relative polarity as the output signal generated by said impact generator on impact, d. electric charge storage means coupled to said rectifier means for receiving electric charges when said rectifier is in a conducting condition, e. a voltage responsive switching means coupling said electric charge storage means to a detonator and being responsive to a predetermined voltage on said charge storage means for discharging said charge storage means through said detonator.
Claim 4
Dependent Claim
130 words
A self-powered fuze firing system that will initiate moderate energy wire-bridge detonators coMprising: a. a piezoelectric impact generator for generating an output signal voltage when deformed on impact, b. a transformer having a primary winding coupled to said impact generator and having a secondary winding, c. rectifier means connected in series with said secondary winding and having the same relative polarity as the output signal generated by said impact generator on impact, d. electric charge storage means coupled to said rectifier means for receiving electric charges when said rectifier is in a conducting condition, e. a voltage responsive switching means coupling said electric charge storage means to a detonator and being responsive to a predetermined voltage on said charge storage means for discharging said charge storage means through said detonator.
Claim 5
Dependent Claim
16 words
The system of claim 2 wherein said impact generator is of the poled ferroelectric ceramic type.
Claim 6
Dependent Claim
17 words
The system of claim 2 wherein said voltage responsive means is of the Shockley avalanche diode type.
Claim 7
Dependent Claim
15 words
The system of claim 2 wherein said detonator is of the moderate energy wire-bridge type.
Claim 8
Dependent Claim
27 words
The system of claim 2 wherein said wire-bridge detonator is of the type requiring electrical energy for initiation in the range of from 2,500 to 10,000 ergs.
References Cited (Backward Citations)
US2514359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |