US3179946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording with gas
Assignee: ATLAUTIC REFINING Co
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Filing: 1961-09-25
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Granted: 1965-04-20
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Clifford D Dransfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
AN IMPROVED DRY WRITING RECORDING SYSTEM RESPONSIVE TO ELECTRICAL SIGNALS COMPRISING (A) A SOURCE OF GASEOUS AMMONIA, (B) A FIRST CONDUCTION MEANS CONNECTED TO SAID SOURCE, (C) A FLOW CONTROL VALVE ATTACHED TO SAID FIRST CONDUCTION MEANS, (D) A SECOND CONDUCTION MEANS WHICH IS FLEXIBLE AND CONNECTS TO SAID CONTROL VALVE, (E) A MOVABLE RECORDING ELEMENT ATTACHED TO SAID SECOND CONDUCTION MEANS, (F) LIFT MEANS ASSOCIATED WITH SAID RECORDING ELEMENT, (G) A RECORDING NOZZLE RIGIDLY JOINED TO SAID RECORDING ELEMENT, (H) A RECORDING MEDIUM SENSITIVE TO SAID AMMONIA, (I) A ROTATABLE DRUM SUPPORTING SAID RECORDING MEDIUM, (J) A MICROSWITCH WHICH IS ACTUATED EACH TIME SAID DRUM REVOLVES, (K) A SOLENOID ELECTRICALLY CONNECTED TO SAID MICROSWITCH FOR CONTROLLING FLOW THROUGH SAID CONTROL VALVE AND ADJUSTING THE POSITION OF SAID RECORDING ELEMENT RELATIVE TO SAID RECORDING MEDIUM BY ACTUATING SAID LIFT MEANS, (L) A PEN MOTOR ELECTRICALLY CONNECTED TO SAID RECORDING ELEMENT FOR MOVING SAME IN ACCORDANCE WITH INPUT ELECTRICAL SIGNALS, (M) EXHAUST MEANS INCLUDING A HOOD POSITIONED OVER SAID RECORDING NOZZLE, AND (N) A VACUUM SOURCE ATTACHED TO SAID EXHAUST MEANS FOR REMOVING EXCESS AMMONIA VAPORS.
Claim 2
Dependent Claim
185 words
AN IMPROVED DRY WRITING RECORDING SYSTEM RESPONSIVE TO ELECTRICAL SIGNALS COMPRISING (A) A SOURCE OF GASEOUS AMMONIA, (B) A FIRST CONDUCTION MEANS CONNECTED TO SAID SOURCE, (C) A FLOW CONTROL VALVE ATTACHED TO SAID FIRST CONDUCTION MEANS, (D) A SECOND CONDUCTION MEANS WHICH IS FLEXIBLE AND CONNECTS TO SAID CONTROL VALVE, (E) A MOVABLE RECORDING ELEMENT ATTACHED TO SAID SECOND CONDUCTION MEANS, (F) LIFT MEANS ASSOCIATED WITH SAID RECORDING ELEMENT, (G) A RECORDING NOZZLE RIGIDLY JOINED TO SAID RECORDING ELEMENT, (H) A RECORDING MEDIUM SENSITIVE TO SAID AMMONIA, (I) A ROTATABLE DRUM SUPPORTING SAID RECORDING MEDIUM, (J) A MICROSWITCH WHICH IS ACTUATED EACH TIME SAID DRUM REVOLVES, (K) A SOLENOID ELECTRICALLY CONNECTED TO SAID MICROSWITCH FOR CONTROLLING FLOW THROUGH SAID CONTROL VALVE AND ADJUSTING THE POSITION OF SAID RECORDING ELEMENT RELATIVE TO SAID RECORDING MEDIUM BY ACTUATING SAID LIFT MEANS, (L) A PEN MOTOR ELECTRICALLY CONNECTED TO SAID RECORDING ELEMENT FOR MOVING SAME IN ACCORDANCE WITH INPUT ELECTRICAL SIGNALS, (M) EXHAUST MEANS INCLUDING A HOOD POSITIONED OVER SAID RECORDING NOZZLE, AND (N) A VACUUM SOURCE ATTACHED TO SAID EXHAUST MEANS FOR REMOVING EXCESS AMMONIA VAPORS.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |