Patent US3203249A successfully refreshed from Google Patents.
US3203249A
Expired / Lapsed
US
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Gas chromatography valving apparatus
Assignee: PE Manufacturing GmbH
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Filing: 1962-08-14
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Granted: 1965-08-31
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Expires: 1982-08-14
Abstract
No abstract record available.
Inventors
- 👤 Jentzsch Dietrich
- 👤 Weber Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:37
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/04; G01N30/16; G01N30/20; G01N30/26; G01N30/38; G01N30/40; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A VALVE ADAPTED FOR USE IN CHROMATOGRAPHY WHICH COMPRISES: A STATOR MEMBER HAVING A FIRST PLANAR SURFACE AND DEFINING IN SAID SURFACE FIRST, SECOND, AND THIRD PORTS, EACH OF SAID PORTS BEING POSITIONED AT A CORNER OF AN EQUILATERAL TRIANGLE, AND A FOURTH PORT BEING POSITIONED EQUIDISTANT FROM SAID FIRST, SECOND, ADN THIRD PORTS; A ROTOR MEMBER HAVING A SECOND PLANAR SURFACE CONTACTING SAID FIRST SURFACE AND DEFINING IN SAID SECOND SURFACE A FIRST CHANNEL ADAPTED TO INTERCONNECT TWO OF SAID FIRST, SECOND AND THIRD PORTS TO ALLOW FLUID FLOW THEREBETWEEN AND A SECOND CHANNEL ADAPTED TO INTERCONNECT THE REMAINING PORTS TO ALLOW FLUID FLOW THEREBETWEEN; CARRIER GAS SUPPLY CONDUIT MEANS CONNECTED TO SAID FIRST PORT; CARRIER GAS OUTLET CONDUIT MEANS CONNECTED TO SAID FOURTH PORT; MEAND FOR CONNECTING A CHROMATOGRAPHIC SEPARATING COLUMN BETWEEN SAID SECOND AND THIRD PORTS; AND ACTUATING MEANS FOR ROTATING SAID ROTOR MEMBER RELATIVE TO SAID STATOR MEMBER, ABOUT SAID FOURTH PORT.
Claim 2
Dependent Claim
156 words
A VALVE ADAPTED FOR USE IN CHROMATOGRAPHY WHICH COMPRISES: A STATOR MEMBER HAVING A FIRST PLANAR SURFACE AND DEFINING IN SAID SURFACE FIRST, SECOND, AND THIRD PORTS, EACH OF SAID PORTS BEING POSITIONED AT A CORNER OF AN EQUILATERAL TRIANGLE, AND A FOURTH PORT BEING POSITIONED EQUIDISTANT FROM SAID FIRST, SECOND, ADN THIRD PORTS; A ROTOR MEMBER HAVING A SECOND PLANAR SURFACE CONTACTING SAID FIRST SURFACE AND DEFINING IN SAID SECOND SURFACE A FIRST CHANNEL ADAPTED TO INTERCONNECT TWO OF SAID FIRST, SECOND AND THIRD PORTS TO ALLOW FLUID FLOW THEREBETWEEN AND A SECOND CHANNEL ADAPTED TO INTERCONNECT THE REMAINING PORTS TO ALLOW FLUID FLOW THEREBETWEEN; CARRIER GAS SUPPLY CONDUIT MEANS CONNECTED TO SAID FIRST PORT; CARRIER GAS OUTLET CONDUIT MEANS CONNECTED TO SAID FOURTH PORT; MEAND FOR CONNECTING A CHROMATOGRAPHIC SEPARATING COLUMN BETWEEN SAID SECOND AND THIRD PORTS; AND ACTUATING MEANS FOR ROTATING SAID ROTOR MEMBER RELATIVE TO SAID STATOR MEMBER, ABOUT SAID FOURTH PORT.
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |