US3240052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure and flow rate regulation in a fluid circulation system
Assignee: Phillips Petroleum Co
•
Filing: 1962-12-31
•
Granted: 1966-03-15
•
Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Marvin E Reinecke
- 👤 Lewis B Roof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:55
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/28; G01N30/32; G05; G05D; G05D11/00; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0396; Y10T137/1842; Y10T137/1939; Y10T137/2012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
IN A CHROMATOGRAPHIC ANALYZER COMPRISING A CHROMATOGRAPHIC COLUMN, A PAIR OF THERMAL CONDUCTIVITY CELLS, A SOURCE OF CARRIER FLUID, A SOURCE OF FLUID SAMPLE TO BE ANALYZED, AND A SAMPLE VALVE TO PASS CARRIER FLUID TO THE COLUMN AND TO INTERRUPT THE FLOW OF CARRIER FLUID PERIODICALLY AND TO INJECT A SLUG OF SAMPLE INTO THE CARRIER FLUID PASSING TO THE COLUMN, THE COMBINATION THEREWITH OF A CONSTANT PRESSURE MANIFOLD; A FIRST BACK PRESSURE REGULATOR VALVE, REFERENCED TO A FLUID IN A SUBSTANTIALLY EVACUATED, SEALED BELLOWS, AND OPERATIVELY CONNECTED TO SAID MANIFOLD SO AS TO MAINTAIN THE PRESSURE IN SAID MANIFOLD CONSTANT AND TO EXHAUST EXCESS FLUID; A PRESSURE REGULATOR VALVE OPERATIVELY CONNECTED TO SAID SOURCE OF CARRIER FLUID AND CONTROLLED BY THE PRESSURE IN SAID MANIFOLD SO AS TO PASS CARRIER FLUID TO SAID SAMPLE SELECTOR VALVE AND TO A FIRST THERMAL CONDUCTIVITY CELL; A CONDUIT CONNECTED TO SAID COLUMN SO AS TO REMOVE EFFLUENT FLUID THEREFROM; MEANS TO REMOVE A CONSTANT PORTION OF SAID EFFLUENT FLUID FROM SAID CONDUIT AND TO PASS SAME THROUGH THE SECOND OF SAID THERMAL CONDUCTIVITY CELLS; MEANS TO EXHAUST SAID CELLS INTO SAID MANIFOLD; AND
Claim 2
Dependent Claim
192 words
IN A CHROMATOGRAPHIC ANALYZER COMPRISING A CHROMATOGRAPHIC COLUMN, A PAIR OF THERMAL CONDUCTIVITY CELLS, A SOURCE OF CARRIER FLUID, A SOURCE OF FLUID SAMPLE TO BE ANALYZED, AND A SAMPLE VALVE TO PASS CARRIER FLUID TO THE COLUMN AND TO INTERRUPT THE FLOW OF CARRIER FLUID PERIODICALLY AND TO INJECT A SLUG OF SAMPLE INTO THE CARRIER FLUID PASSING TO THE COLUMN, THE COMBINATION THEREWITH OF A CONSTANT PRESSURE MANIFOLD; A FIRST BACK PRESSURE REGULATOR VALVE, REFERENCED TO A FLUID IN A SUBSTANTIALLY EVACUATED, SEALED BELLOWS, AND OPERATIVELY CONNECTED TO SAID MANIFOLD SO AS TO MAINTAIN THE PRESSURE IN SAID MANIFOLD CONSTANT AND TO EXHAUST EXCESS FLUID; A PRESSURE REGULATOR VALVE OPERATIVELY CONNECTED TO SAID SOURCE OF CARRIER FLUID AND CONTROLLED BY THE PRESSURE IN SAID MANIFOLD SO AS TO PASS CARRIER FLUID TO SAID SAMPLE SELECTOR VALVE AND TO A FIRST THERMAL CONDUCTIVITY CELL; A CONDUIT CONNECTED TO SAID COLUMN SO AS TO REMOVE EFFLUENT FLUID THEREFROM; MEANS TO REMOVE A CONSTANT PORTION OF SAID EFFLUENT FLUID FROM SAID CONDUIT AND TO PASS SAME THROUGH THE SECOND OF SAID THERMAL CONDUCTIVITY CELLS; MEANS TO EXHAUST SAID CELLS INTO SAID MANIFOLD; AND
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |