US3126964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for selectively detonating a
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:04
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/1185; F; F42; F42D; F42D1/00; F42D1/04; F42D1/045; F42D1/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
APPARATUS FOR SELECTIVELY DETONATING FROM AN OPERATING LOCATION A PLURALITY OF ELECTRICALLY DETONABLE EXPLOSIVE CHARGE MEANS LOCATED AT A REMOTE LOCATION, SAID APPARATUS COMPRISING: FIRST AND SECOND ELECTRICALLY CONDUCTIVE LEADS EXTENDING FROM SAID OPERATING LOCATION TO SAID REMOTE LOCATION; FIRST UNIDIRECTIONAL CONDUCTION MEANS CONNECTED TO SAID FIRST LEAD; A STEPPING SWITCH AT SAID REMOTE LOCATION INCLUDING AN ACTUATING WINDING AND SWITCHING MEANS FOR INDIVIDUALLY CONNECTING THE EXPLOSIVE CHARGE MEANS BETWEEN SAID FIRST UNIDIRECTIONAL CONDUCTION MEANS AND SAID SECOND ELECTRICAL LEAD IN SEQUENCE, RESPONSIVE TO SUCCESSIVE ENERGIZATIONS OF SAID ACTUATING WINDING; SAID FIRST UNIDIRECTIONAL CONDUCTION MEANS BEING POLED SO THAT CURRENT WILL FLOW THERETHROUGH WHEN SAID SECOND LEAD IS POSITIVE RELATIVE TO SAID FIRST LEAD; SECOND UNIDIRECTIONAL CONDUCTION MEANS CONNECTING SAID ACTUATING WINDING BETWEEN SAID FIRST AND SECOND LEADS, POLED SO THAT ELECTRICAL CURRENT WILL FLOW THERETHROUGH WHEN SAID FIRST LEAD IS POSITIVE WITH RESPECT TO SAID SECOND LEAD; AND MEANS AT SAID OPERATING LOCATION CONNECTED TO SAID FIRST AND SECOND LEADS FOR APPLYING DIRECT CURRENT VOLTAGES OF OPPOSITE POLARITIES TO SAID FIRST AND SECOND LEADS IN ALTERNATION.
Claim 2
Dependent Claim
177 words
APPARATUS FOR SELECTIVELY DETONATING FROM AN OPERATING LOCATION A PLURALITY OF ELECTRICALLY DETONABLE EXPLOSIVE CHARGE MEANS LOCATED AT A REMOTE LOCATION, SAID APPARATUS COMPRISING: FIRST AND SECOND ELECTRICALLY CONDUCTIVE LEADS EXTENDING FROM SAID OPERATING LOCATION TO SAID REMOTE LOCATION; FIRST UNIDIRECTIONAL CONDUCTION MEANS CONNECTED TO SAID FIRST LEAD; A STEPPING SWITCH AT SAID REMOTE LOCATION INCLUDING AN ACTUATING WINDING AND SWITCHING MEANS FOR INDIVIDUALLY CONNECTING THE EXPLOSIVE CHARGE MEANS BETWEEN SAID FIRST UNIDIRECTIONAL CONDUCTION MEANS AND SAID SECOND ELECTRICAL LEAD IN SEQUENCE, RESPONSIVE TO SUCCESSIVE ENERGIZATIONS OF SAID ACTUATING WINDING; SAID FIRST UNIDIRECTIONAL CONDUCTION MEANS BEING POLED SO THAT CURRENT WILL FLOW THERETHROUGH WHEN SAID SECOND LEAD IS POSITIVE RELATIVE TO SAID FIRST LEAD; SECOND UNIDIRECTIONAL CONDUCTION MEANS CONNECTING SAID ACTUATING WINDING BETWEEN SAID FIRST AND SECOND LEADS, POLED SO THAT ELECTRICAL CURRENT WILL FLOW THERETHROUGH WHEN SAID FIRST LEAD IS POSITIVE WITH RESPECT TO SAID SECOND LEAD; AND MEANS AT SAID OPERATING LOCATION CONNECTED TO SAID FIRST AND SECOND LEADS FOR APPLYING DIRECT CURRENT VOLTAGES OF OPPOSITE POLARITIES TO SAID FIRST AND SECOND LEADS IN ALTERNATION.
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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |