Patent US3287577A successfully refreshed from Google Patents.
Patent US2715610A successfully refreshed from Google Patents.
US2715610A
Expired / Lapsed
US
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Proportioner for chemical feed
Assignee: Standard Oil Co
•
Filing: 1952-02-29
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Granted: 1955-08-16
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Expires: 1972-02-29
Abstract
No abstract record available.
Inventors
- 👤 Kevin N Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:47
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/006; C02F1/687; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2529; Y10T137/4673; Y10T137/479
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A SYSTEM FOR COMBINING MATERIALS, MEANS SUPPLYING SIMULTANEOUSLY A PLURALITY OF QUANTITIES OF A FIRST MATERIAL, MEANS FOR MEASURING EACH QUANTITY, A SINGLE SOURCE OF A SECOND MATERIAL, MEANS RESPONSIVE TO A GIVEN TOTAL QUANTITY OF FIRST MATERIAL FOR SUPPLYING A PREDETERMINED QUANTITY OF THE SECOND MATERIAL FROM THE SOURCE, MEANS FOR DISCHARGING SAID QUANTITY OF SECOND MATERIAL AT A GIVEN RATE AND IN A GIVEN TIME INTERVAL, AND MEANS RESPONSIVE TO SAID MEASURING MEANS FOR DIRECTING THE DISCHARGE OF SAID SECOND MATERIAL SELECTIVELY INTO THE RESPECTIVE QUANTITIES OF FIRST MATERIAL, THE TIME OF DISCHARGE INTO EACH QUANTITY OF FIRST MATERIAL BEING A FUNCTION OF THE RATIO BETWEEN THAT QUANTITY AND THE TOTAL QUANTITY OF FIRST MATERIAL.
Claim 2
Dependent Claim
118 words
IN A SYSTEM FOR COMBINING MATERIALS, MEANS SUPPLYING SIMULTANEOUSLY A PLURALITY OF QUANTITIES OF A FIRST MATERIAL, MEANS FOR MEASURING EACH QUANTITY, A SINGLE SOURCE OF A SECOND MATERIAL, MEANS RESPONSIVE TO A GIVEN TOTAL QUANTITY OF FIRST MATERIAL FOR SUPPLYING A PREDETERMINED QUANTITY OF THE SECOND MATERIAL FROM THE SOURCE, MEANS FOR DISCHARGING SAID QUANTITY OF SECOND MATERIAL AT A GIVEN RATE AND IN A GIVEN TIME INTERVAL, AND MEANS RESPONSIVE TO SAID MEASURING MEANS FOR DIRECTING THE DISCHARGE OF SAID SECOND MATERIAL SELECTIVELY INTO THE RESPECTIVE QUANTITIES OF FIRST MATERIAL, THE TIME OF DISCHARGE INTO EACH QUANTITY OF FIRST MATERIAL BEING A FUNCTION OF THE RATIO BETWEEN THAT QUANTITY AND THE TOTAL QUANTITY OF FIRST MATERIAL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |