Patent US3299258A successfully refreshed from Google Patents.
US3299258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Correction device for electronic flow ratio controller
Assignee: Shell USA Inc
•
Filing: 1963-06-26
•
Granted: 1967-01-17
•
Expires: 1983-06-26
Abstract
No abstract record available.
Inventors
- 👤 Albertus C H Borsboom
- 👤 Hendrikus J Nihof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:53
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; G05D11/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
229 words
A DEVICE FOR THE AUTOMATIC CONTROL OF THE RELATIONSHIP OF THE QUANTITIES OF STREAMS OF MEDIA SUPPLIED THROUGH TWO LINES COMPRISING: A FLOW METER DISPOSED IN EACH OF THE LINES TO SUPPLY TWO OUTPUT SIGNALS HAVING FREQUENCIES PROPORTIONAL TO THE RATE OF FLOW IN THE TWO LINES; TWO SWITCHING RELAYS, ONE OF SAID RELAYS BEING COUPLED TO THE FLOW METER IN ONE LINE, THE OTHER RELAY BEING COUPLED TO THE FLOW METER IN THE SECOND LINE; TWO AUXILIARY CAPACITORS, ONE OF SAID CAPACITORS BEING COUPLED TO A FIRST SOURCE OF DIRECT CURRENT VOLTAGE AND TO A RESERVOIR CAPACITOR THROUGH THE CONTACTS OF SAID ONE RELAY AND THE OTHER OF SAID CAPACITORS BEING COUPLED TO A SECOND SOURCE OF DIRECT CURRENT VOLTAGE AND SAID RESERVOIR CAPACITOR THROUGH THE CONTACTS OF SAID OTHER RELAY; MEANS COUPLED TO SAID FIRST AND SECOND SOURCES OF DIRECT CURRENT VOLTAGE TO CARRY THE RELATIONSHIP BETWEEN SAID SOURCES; AT LEAST ONE ADDITIONAL AUXILIARY CAPACITOR; AN ADDITIONAL SWITCHING RELAY, SAID ADDITIONAL AUXILIARY CAPACITOR BEING COUPLED TO A THIRD SOURCE OF DIRECT CURRENT VOLTAGE AND SAID RESERVOIR CAPACITOR THROUGH THE CONTACTS OF SAID ADDITIONAL SWITCHING RELAY, SAID ADDITIONAL SWITCHING RELAY BEING COUPLED TO ONE OF THE FLOW METERS; AND MONITORING MEANS DISPOSED TO MONITOR A CHARACTERISTIC OF THE MEDIA IN ONE STREAM, SAID MEANS BEING COUPLED TO SAID THIRD DIRECT CURRENT VOLTAGE SOURCE TO CONTROL THE MAGNITUDE THEREOF.
Claim 2
Independent Claim
229 words
A DEVICE FOR THE AUTOMATIC CONTROL OF THE RELATIONSHIP OF THE QUANTITIES OF STREAMS OF MEDIA SUPPLIED THROUGH TWO LINES COMPRISING: A FLOW METER DISPOSED IN EACH OF THE LINES TO SUPPLY TWO OUTPUT SIGNALS HAVING FREQUENCIES PROPORTIONAL TO THE RATE OF FLOW IN THE TWO LINES; TWO SWITCHING RELAYS, ONE OF SAID RELAYS BEING COUPLED TO THE FLOW METER IN ONE LINE, THE OTHER RELAY BEING COUPLED TO THE FLOW METER IN THE SECOND LINE; TWO AUXILIARY CAPACITORS, ONE OF SAID CAPACITORS BEING COUPLED TO A FIRST SOURCE OF DIRECT CURRENT VOLTAGE AND TO A RESERVOIR CAPACITOR THROUGH THE CONTACTS OF SAID ONE RELAY AND THE OTHER OF SAID CAPACITORS BEING COUPLED TO A SECOND SOURCE OF DIRECT CURRENT VOLTAGE AND SAID RESERVOIR CAPACITOR THROUGH THE CONTACTS OF SAID OTHER RELAY; MEANS COUPLED TO SAID FIRST AND SECOND SOURCES OF DIRECT CURRENT VOLTAGE TO CARRY THE RELATIONSHIP BETWEEN SAID SOURCES; AT LEAST ONE ADDITIONAL AUXILIARY CAPACITOR; AN ADDITIONAL SWITCHING RELAY, SAID ADDITIONAL AUXILIARY CAPACITOR BEING COUPLED TO A THIRD SOURCE OF DIRECT CURRENT VOLTAGE AND SAID RESERVOIR CAPACITOR THROUGH THE CONTACTS OF SAID ADDITIONAL SWITCHING RELAY, SAID ADDITIONAL SWITCHING RELAY BEING COUPLED TO ONE OF THE FLOW METERS; AND MONITORING MEANS DISPOSED TO MONITOR A CHARACTERISTIC OF THE MEDIA IN ONE STREAM, SAID MEANS BEING COUPLED TO SAID THIRD DIRECT CURRENT VOLTAGE SOURCE TO CONTROL THE MAGNITUDE THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |