Fluid transfer valve structure and diluting system
Abstract
Abstract A DILUTING SYSTEM FOR AUTOMATICALLY PRODUCING ONE OR MORE SAMPLE SUSPENSIONS OR DILUTIONS OF PREDETERMINED CONCENTRATION FROM A FIRST FLUID SPECIMEN, WHILE SIMULTANEOUSLY COMMERCING DILUTION OF A SECOND FULL SPECIMEN BEFORE THE DESIRED DILUTIONS OF THE FIRST ARE COMPLETED; AND A NOVEL TRANSFER VALVE STRUCTURE FOR USE THEREIN. THE SYSTEM EMPLOYING MEANS FOR DRAWING A FLUID SAMPLE INTO A FIRST PORTION OF THE TRANSFER VALVE, WHEREIN UPON INDEXING OF THE VALVE A PRECISE AMOUNT OF SAID SAMPLE IS SUBTENDED AND MIXED WITH A KNOWN QUANTITY OF DILUENT TO PROVIDE A FIRST FLUID SUSPENSION OF KNOWN CONCENTRATE. MEANS FOR DRAWING A PORTION OF THE FIRST FLUID SUSPENSION INTO A SECOND PORTION OF THE VALVE, SUCH THAT UPON INDEXING OF THE VALVE BACK TO ITS INITIAL POSITION, A PRECISE AMOUNT OF SAID FIRST FLUID SUSPENSION IS SUBTENDED AND MIXED WITH A SECOND VOLUME OF DILUENT TO PRODUCE A SECOND OR FINAL FLUID SUSPENSION OF DETERMINABLE CONCENTRATE.
Inventors
- 👤 William F Rothermel
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |