Patent US3075461A successfully refreshed from Google Patents.
US3075461A
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Method and apparatus for detonating radio frequency sensitive blasting caps
Assignee: Bilker and Moyerman
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Filing: 1960-10-28
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Granted: 1963-01-29
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Expires: 1980-10-28
Abstract
No abstract record available.
Inventors
- 👤 Ehlmann Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:36
CPC Classifications
F; F42; F42B; F42B33/00; F42B33/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A METHOD OF DETONATING ELECTRIC BLASTING CAPS CAPABLE OF HAVING CURRENT INDUCED THEREIN BY RADIO FREQUENCY ENERGY, SAID BLASTING CAPS BEING CONCEALED IN BAGGAGE AS AN ELEMENT OF A BOMB, COMPRISING THE STEPS OF ESTABLISHING AN EXPLOSION-PROOF LONGITUDINALLY EXTENDING EXPOSURE CHAMBER; PROVIDING INSULATED RADIO FREQUENCY TRANSMITTING ANTENNAE WITHIN SAID CHAMBER ALONG THE LENGTH THEREOF; GENERATING A RADIO FREQUENCY SIGNAL OF CYCLICALLY VARYING FREQUENCY; CYCLING SAID RADIO SIGNAL TO SAID TRANSMITTING ANTENNAE; PASSING BAGGAGE SUSPECTED OF CONTAINING A BLASTING CAP THROUGH SAID EXPOSURE CHAMBER ADJACENT SAID ANTENNAE AND INSULATED FROM GROUND, AT A FIXED RATE OF TRAVEL SUCH THAT A GIVEN PIECE OF BAGGAGE REMAINS WITHIN SAID CHAMBER FOR AT LEAST ONE FULL CYCLE OF FREQUENCY VARIATION, AND INDUCING WITHIN A BLASTING CAP IF PRESENT A CURRENT SUFFICIENT TO DETONATE IT.
Claim 2
Independent Claim
130 words
A METHOD OF DETONATING ELECTRIC BLASTING CAPS CAPABLE OF HAVING CURRENT INDUCED THEREIN BY RADIO FREQUENCY ENERGY, SAID BLASTING CAPS BEING CONCEALED IN BAGGAGE AS AN ELEMENT OF A BOMB, COMPRISING THE STEPS OF ESTABLISHING AN EXPLOSION-PROOF LONGITUDINALLY EXTENDING EXPOSURE CHAMBER; PROVIDING INSULATED RADIO FREQUENCY TRANSMITTING ANTENNAE WITHIN SAID CHAMBER ALONG THE LENGTH THEREOF; GENERATING A RADIO FREQUENCY SIGNAL OF CYCLICALLY VARYING FREQUENCY; CYCLING SAID RADIO SIGNAL TO SAID TRANSMITTING ANTENNAE; PASSING BAGGAGE SUSPECTED OF CONTAINING A BLASTING CAP THROUGH SAID EXPOSURE CHAMBER ADJACENT SAID ANTENNAE AND INSULATED FROM GROUND, AT A FIXED RATE OF TRAVEL SUCH THAT A GIVEN PIECE OF BAGGAGE REMAINS WITHIN SAID CHAMBER FOR AT LEAST ONE FULL CYCLE OF FREQUENCY VARIATION, AND INDUCING WITHIN A BLASTING CAP IF PRESENT A CURRENT SUFFICIENT TO DETONATE IT.
References Cited (Backward Citations)
US2459854A
Cited
US2640417A
Cited
US2659235A
Cited
US2859610A
Cited
US2957415A
Cited
US2918001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |