Patent US2517040A successfully refreshed from Google Patents.
US2517040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter and discharge valve for solvent extractors
Assignee: French Oil Mill Machinery Co
•
Filing: 1946-09-20
•
Granted: 1950-08-01
•
Expires: 1966-09-20
Abstract
No abstract record available.
Inventors
- 👤 Forrest C Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:40
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
166 words
THE COMBINATION WITH AN EXTRACTOR HAVING A CHAMBER FOR TREATING MATERIAL FOR THE EXTRACTION OF LIQUID THEREFROM, AND A DRIVEN AGITATOR FOR THE MATERIAL IN SAID CHAMBER, OF A TAKEOFF STRAINER CONTAINING A FILTERING BODY FOR SAID LIQUID AND COMPRISING A CASING ARRANGED EXTERIORLY AND COMMUNICATING THROUGH AN OPENING WITH SAID TREATING CHAMBER, AND A HOLLOW MEMBER MOVABLE FROM AN OUTER POSITION IN SAID CASING OUT OF THE PATH OF MOVEMENT OF SAID AGITATOR TO AN INNER POSITION IN WHICH IT EXTENDS INTO SAID TREATING CHAMBER, SAID MEMBER HAVING A PART WHICH IN THE OUTER POSITION OF SAID MEMBER CLOSES SAID COMMUNICATION OPENING, AND A PERFORATED PART THROUGH WHICH SAID LIQUID PASSES FROM SAID TREATING CHAMBER TO SAID FILTERING BODY WHEN SAID MEMBER IS IN SAID INNER POSITION, AND A SAFETY DEVICE CONTROLLED BY THE POSITION OF SAID MEMBER AND WHICH PREVENTS OPERATION OF SAID AGITATOR EXCEPT WHEN SAID HOLLOW MEMBER IS IN ITS SAID OUTER POSITION OUT OF THE PATH OF MOVEMENT OF SAID AGITATOR.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |