US3148618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater signaling apparatus
Assignee: Individual
•
Filing: 1962-03-20
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Granted: 1964-09-15
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Expires: 1982-03-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph D Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:42
CPC Classifications
G; G10; G10K; G10K15/00; G10K15/04; G10K15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
EXPENDABLE APPARATUS FOR DETERMINING THE RELATIVE TRANSMISSION CHARACTERISTICS OF A SERIES OF EXPLOSIVE PULSES DETONATED AT PREDETERMINED DEPTHS IN THE OCEAN COMPRISING: A NEGATIVELY BUOYANT HOUSING SUITABLE FOR DROPPING INTO THE OCEAN FROM AN AIRCRAFT; A MULTI-CONTACT PRESSURE DRIVEN SWITCH WITHIN THE SAID HOUSING, THE VARIOUS CONTACTS OF WHICH ARE SEQUENTIALLY CLOSED IN RESPONSE TO CONTINUALLY INCREASING HYDROSTATIC PRESSURE OUTSIDE THE SAID HOUSING AS IT SINKS INTO THE OCEAN, THE SAID VARIOUS CONTACTS BEING SO SPACED AND ARRANGED AS TO BE CLOSED AT PREDETERMINED FIXED INTERVALS OF DEPTH, EACH CONTACT OF THE SAID SWITCH THEREBY BEING CLOSED AT SOME PREDETERMINED MINOR INTERVAL OF DEPTH AND CERTAIN PERIODICALLY SPACED CONTACTS BEING CLOSED AT PREDETERMINED MAJOR INTERVALS OF DEPTH; A FIRST SERIES OF ELECTRICALLY DETONATED EXPLOSIVE CHARGES MOUNTED WITHIN THE SAID HOUSING AND VENTABLE TO THE SURROUNDING WATER, ONE CHARGE OF THE SAID FIRST SERIES OF EXPLOSIVE CHARGES BEING CONNECTED TO EACH OF THE SAID CONTACTS OF THE SAID MULTI-CONTACT SWITCH, THE SAID FIRST SERIES OF EXPLOSIVE CHARGES HAVING A SUBSTANTIALLY INSTANTANEOUS DETONATING CHARACTERISTIC WHEN ACTIVATED BY ELECTRICAL CURRENT; A SECOND SERIES OF ELECTRICALLY DETONATED EXPLOSIVE CHARGES MOUNTED WITHIN THE SAID HOUSING AND VENTABLE TO THE SURROUNDING WATER, ONE
Claim 2
Dependent Claim
197 words
EXPENDABLE APPARATUS FOR DETERMINING THE RELATIVE TRANSMISSION CHARACTERISTICS OF A SERIES OF EXPLOSIVE PULSES DETONATED AT PREDETERMINED DEPTHS IN THE OCEAN COMPRISING: A NEGATIVELY BUOYANT HOUSING SUITABLE FOR DROPPING INTO THE OCEAN FROM AN AIRCRAFT; A MULTI-CONTACT PRESSURE DRIVEN SWITCH WITHIN THE SAID HOUSING, THE VARIOUS CONTACTS OF WHICH ARE SEQUENTIALLY CLOSED IN RESPONSE TO CONTINUALLY INCREASING HYDROSTATIC PRESSURE OUTSIDE THE SAID HOUSING AS IT SINKS INTO THE OCEAN, THE SAID VARIOUS CONTACTS BEING SO SPACED AND ARRANGED AS TO BE CLOSED AT PREDETERMINED FIXED INTERVALS OF DEPTH, EACH CONTACT OF THE SAID SWITCH THEREBY BEING CLOSED AT SOME PREDETERMINED MINOR INTERVAL OF DEPTH AND CERTAIN PERIODICALLY SPACED CONTACTS BEING CLOSED AT PREDETERMINED MAJOR INTERVALS OF DEPTH; A FIRST SERIES OF ELECTRICALLY DETONATED EXPLOSIVE CHARGES MOUNTED WITHIN THE SAID HOUSING AND VENTABLE TO THE SURROUNDING WATER, ONE CHARGE OF THE SAID FIRST SERIES OF EXPLOSIVE CHARGES BEING CONNECTED TO EACH OF THE SAID CONTACTS OF THE SAID MULTI-CONTACT SWITCH, THE SAID FIRST SERIES OF EXPLOSIVE CHARGES HAVING A SUBSTANTIALLY INSTANTANEOUS DETONATING CHARACTERISTIC WHEN ACTIVATED BY ELECTRICAL CURRENT; A SECOND SERIES OF ELECTRICALLY DETONATED EXPLOSIVE CHARGES MOUNTED WITHIN THE SAID HOUSING AND VENTABLE TO THE SURROUNDING WATER, ONE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |