US3207889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analogue pipe network analyzer
Assignee: NAZIONALE METANODOTTI SpA Soc
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Filing: 1961-09-19
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Granted: 1965-09-21
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Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Evangelisti Giuseppe
- 👤 Marro Giovanni
- 👤 Belardinelli Enzo
- 👤 Sarti Eugenio
- 👤 Grandi Alberto
- 👤 Bonfiglioli Giampaolo
- 👤 Righetti Rino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:06
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/48; G06G7/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN ANALOGUE PIPE NETWORK ANALYZER SIMULATING THE RUNNING CONDITION OF A PIPE-LINE NETWORK FOR FLUIDS UNDER PRSSURE, COMPRISING TWO ELECTRIC TERMINALS, A FRIST CHAIN OF RESISTORS CONNECTED IN SERIES TO ONE OF SAID TERMINALS, A SECOND CHAIN COMPRISING A LIKE NUMBER OF RESISTORS CONNECTED TO THE OTHER TERMINAL, THE RESISTORS IN ONE CHAIN BEING EQUAL, RESPECTIVELY, IN RESISTANCE TO THE CORRESPONDINGLY-ARRANGED RESISTORS OF THE OTHER CHAIN, A RESISTOR IN SERIES WITH A DIODE CONNECTED BETWEEN THE JUNCTURES OF EACH OF A PLURALITY OF PAIRS OF ADJACENT RESISTORS OF ONE CHAIN AND THE JUNCTURES OF CORRESPONDING PAIRS OF ADJACENT RESISTORS OF THE OTHER CHAIN, AND A VARIABLE E.M.F. GENERATOR COMPRISING A POWER SUPPLY CONNECTED TO ONUE OF THE CHAINS TO POLARIZE THE RESISTORS OF BOTH CHAINS
Claim 2
Dependent Claim
125 words
AN ANALOGUE PIPE NETWORK ANALYZER SIMULATING THE RUNNING CONDITION OF A PIPE-LINE NETWORK FOR FLUIDS UNDER PRSSURE, COMPRISING TWO ELECTRIC TERMINALS, A FRIST CHAIN OF RESISTORS CONNECTED IN SERIES TO ONE OF SAID TERMINALS, A SECOND CHAIN COMPRISING A LIKE NUMBER OF RESISTORS CONNECTED TO THE OTHER TERMINAL, THE RESISTORS IN ONE CHAIN BEING EQUAL, RESPECTIVELY, IN RESISTANCE TO THE CORRESPONDINGLY-ARRANGED RESISTORS OF THE OTHER CHAIN, A RESISTOR IN SERIES WITH A DIODE CONNECTED BETWEEN THE JUNCTURES OF EACH OF A PLURALITY OF PAIRS OF ADJACENT RESISTORS OF ONE CHAIN AND THE JUNCTURES OF CORRESPONDING PAIRS OF ADJACENT RESISTORS OF THE OTHER CHAIN, AND A VARIABLE E.M.F. GENERATOR COMPRISING A POWER SUPPLY CONNECTED TO ONUE OF THE CHAINS TO POLARIZE THE RESISTORS OF BOTH CHAINS
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |