US3112110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Target and circuit
Assignee: Caldwell Research Inc
•
Filing: 1962-03-15
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Granted: 1963-11-26
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Expires: 1982-03-15
Abstract
No abstract record available.
Inventors
- 👤 Schulman Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
F; F41; F41J; F41J5/00; F41J5/04; F41J5/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A TARGET AND CIRCUIT FOR ELECTRICALLY RECORDING PROJECTILE PERFORATIONS THERETHROUGH COMPRISING; A FLAT SUPPORTING INSULATOR COMPOSED OF LAMINATED PAPER; AN ELECTRODE ON EACH SIDE OF SAID INSULATOR, EACH OF SAID ELECTRODES COMPRISING A FIBROUS BODY IMPREGNATED WITH A CONDUCTING MATERIAL; A CHARGING CIRCUIT FOR CHARGING SAID ELECTRODES TO A DIRECT CURRENT POTENTIAL DIFFERENCE, SAID CIRCUIT INCLUDING A SOURCE OF POTENTIAL, A LIMITING RESISTOR, AND A COUPLING RESISTOR; A SENSING CIRCUIT FOR DETERMINING WHEN A PROJECTILE PERFORATES THE TARGET AND CONNECTS THE TWO ELECTRODES BY JOINING THE FIBERS OF EACH, SAID SENSING CIRCUIT INCLUDING AN ELECTRON DISCHARGE DEVICE HAVING A CATHODE, AN ANODE, AND A CONTROL ELECTRODE, WITH THE CATHODE AND CONTROL ELECTRODE CONNECTED ACROSS SAID COUPLING RESISTOR; THE ANODE OF SAID DISCHARGE DEVICE COUPLED TO A MONO-STABLE MULTIVIBRATOR FOR ACTIVATION BY THE PULSE FROM THE DISCHARGE DEVICE AND FOR PRODUCING A LONGER PULSE WHICH IS APPLIED TO A CONTROLLED INSTRUMENT.
Claim 2
Dependent Claim
150 words
A TARGET AND CIRCUIT FOR ELECTRICALLY RECORDING PROJECTILE PERFORATIONS THERETHROUGH COMPRISING; A FLAT SUPPORTING INSULATOR COMPOSED OF LAMINATED PAPER; AN ELECTRODE ON EACH SIDE OF SAID INSULATOR, EACH OF SAID ELECTRODES COMPRISING A FIBROUS BODY IMPREGNATED WITH A CONDUCTING MATERIAL; A CHARGING CIRCUIT FOR CHARGING SAID ELECTRODES TO A DIRECT CURRENT POTENTIAL DIFFERENCE, SAID CIRCUIT INCLUDING A SOURCE OF POTENTIAL, A LIMITING RESISTOR, AND A COUPLING RESISTOR; A SENSING CIRCUIT FOR DETERMINING WHEN A PROJECTILE PERFORATES THE TARGET AND CONNECTS THE TWO ELECTRODES BY JOINING THE FIBERS OF EACH, SAID SENSING CIRCUIT INCLUDING AN ELECTRON DISCHARGE DEVICE HAVING A CATHODE, AN ANODE, AND A CONTROL ELECTRODE, WITH THE CATHODE AND CONTROL ELECTRODE CONNECTED ACROSS SAID COUPLING RESISTOR; THE ANODE OF SAID DISCHARGE DEVICE COUPLED TO A MONO-STABLE MULTIVIBRATOR FOR ACTIVATION BY THE PULSE FROM THE DISCHARGE DEVICE AND FOR PRODUCING A LONGER PULSE WHICH IS APPLIED TO A CONTROLLED INSTRUMENT.
References Cited (Backward Citations)
US2819084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |