US3306206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio frequency free communication system
Assignee: Individual
•
Filing: 1965-09-16
•
Granted: 1967-02-28
•
Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Rodney E Grantham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:13
CPC Classifications
F; F42; F42C; F42C17/00; F42C17/04; H; H04; H04B; H04B10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A DETONATOR FOR USE IN AN EXPLOSIVE MISSILE COMPRISING: A BATTERY, AN EXPLOSIVE PRIMER OPERATIVELY CONNECTED TO SAID BATTERY FOR ACTIVATING SAID BATTERY UPON DETONATION OF SAID PRIMER, A PHOTOCONDUCTIVE SWITCH MEANS FOR CLOSING A CIRCUIT UPON ENERGIZATION BY A LIGHT SOURCE, TIME DELAY SAFETY MEANS SHIELDING SAID PHOTOCONDUCTIVE SWITCH MEANS FROM LIGHT ACTIVATING ENERGY FOR A PREDETERMINED TIME AFTER ACTIVATION OF SAID BATTERY, A RESISTIVE PRIMER IN CONTACT WITH INITIATING MEANS FOR DETONATING A WARHEAD IN THE MISSILE UPON ENERGIZATION OF THE RESISTIVE PRIMER BY ELECTRICAL ENERGY, A SERIES CIRCUIT FORMED BY CONNECTING TOGETHER SAID PHOTOCONDUCTIVE SWITCH MEANS, SAID RESISTIVE PRIMER AND SAID BATTERY, A CONDUCTIVE SHIELD ENCLOSING AND FORMING A RADIO FREQUENCY FREE ENVIROMENT FOR SAID BATTERY, SAID PHOTOCONDUCTIVE SWITCH MEANS, AND SAID RESISTIVE PRIMER, MEANS FOR DETONATING SAID EXPLOSIVE PRIMER, AND LIGHT MEANS OPERATIVELY CONNECTED TO SAID PHOTOCONDUCTIVE SWITCH MEANS FOR SELECTIVELY CLOSING SAID LAST NAMED MEANS.
Claim 2
Dependent Claim
150 words
A DETONATOR FOR USE IN AN EXPLOSIVE MISSILE COMPRISING: A BATTERY, AN EXPLOSIVE PRIMER OPERATIVELY CONNECTED TO SAID BATTERY FOR ACTIVATING SAID BATTERY UPON DETONATION OF SAID PRIMER, A PHOTOCONDUCTIVE SWITCH MEANS FOR CLOSING A CIRCUIT UPON ENERGIZATION BY A LIGHT SOURCE, TIME DELAY SAFETY MEANS SHIELDING SAID PHOTOCONDUCTIVE SWITCH MEANS FROM LIGHT ACTIVATING ENERGY FOR A PREDETERMINED TIME AFTER ACTIVATION OF SAID BATTERY, A RESISTIVE PRIMER IN CONTACT WITH INITIATING MEANS FOR DETONATING A WARHEAD IN THE MISSILE UPON ENERGIZATION OF THE RESISTIVE PRIMER BY ELECTRICAL ENERGY, A SERIES CIRCUIT FORMED BY CONNECTING TOGETHER SAID PHOTOCONDUCTIVE SWITCH MEANS, SAID RESISTIVE PRIMER AND SAID BATTERY, A CONDUCTIVE SHIELD ENCLOSING AND FORMING A RADIO FREQUENCY FREE ENVIROMENT FOR SAID BATTERY, SAID PHOTOCONDUCTIVE SWITCH MEANS, AND SAID RESISTIVE PRIMER, MEANS FOR DETONATING SAID EXPLOSIVE PRIMER, AND LIGHT MEANS OPERATIVELY CONNECTED TO SAID PHOTOCONDUCTIVE SWITCH MEANS FOR SELECTIVELY CLOSING SAID LAST NAMED MEANS.
References Cited (Backward Citations)
US2927213A
Cited
US2931848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |