US3157131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Straining apparatus
Assignee: Individual
•
Filing: 1960-06-10
•
Granted: 1964-11-17
•
Expires: 1980-06-10
Abstract
No abstract record available.
Inventors
- 👤 Brydon John Paterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:27
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
297 words
STRAINING APPARATUS COMPRISING FIRST FILTERING MEANS, INCLUDING A FIRST FILTER AND SECOND FILTERING MEANS INCLUDING A SECOND FILTER, SAID FIRST FILTERING MEANS HAVING FIRST INLETOUTLET MEANS AND SECOND INLET-OUTLET MEANS, SAID SECOND FILTERING MEANS HAVING THIRD INLET-OUTLET MEANS AND FOURTH INLET-OUTLET MEANS, SAID FIRST FILTER BEING DISPOSED IN THE LIQUID PATH BETWEEN SAID FIRST AND SECOND INLET-OUTLET MEANS, SAID SECOND FILTER BEING DISPOSED IN THE LIQUID PATH BETWEEN SAID THIRD AND FOURTH INLET-OUTLET MEANS, FIRST LIQUID CARRYING MEANS CONNECTED BETWEEN SAID FIRST INLETOUTLET MEANS AND SAID FOURTH INLET-OUTLET MEANS, FIRST VALVE MEANS INTERPOSED IN SAID FIRST LIQUID CARRYING MEANS, SECOND LIQUID CARRYING MEANS CONNECTED BETWEEN SAID SECOND INLET-OUTLET MEANS AND SAID THIRD INLET-OUTLET MEANS, SECOND VALVE MEANS INTERPOSED IN SAID SECOND LIQUID CARRYING MEANS, A FIRST INLET MEANS IN SAID FIRST LIQUID CARRYING MEANS FOR RECEIVING A LIQUID TO BE FILTERED, A FIRST OUTLET MEANS IN SAID FIRST LIQUID CARRYING MEANS FOR DISCHARGING A LIQUID WHICH HAS PASSED THROUGH BOTH OF SAID FILTERS, A SECOND INLET MEANS IN SAID SECOND LIQUID CARRYING MEANS, A SECOND OUTLET MEANS IN SAID SECOND LIQUID CARRYING MEANS, SAID FIRST VALVE MEANS BEING INTERPOSED BETWEEN SAID FIRST INLET AND FIRST OUTLET MEANS AND ALSO BEING INTERPOSED BETWEEN SAID FIRST AND FOURTH INLET-OUTLET MEANS, SAID SECOND VALVE MEANS BEING INTERPOSED BETWEEN SAID SECOND INLET AND SECOND OUTLET MEANS AND ALSO BEING INTERPOSED BETWEEN SAID SECOND AND THIRD INLET-OUTLET MEANS, SAID FIRST AND SECOND VALVE MEANS BEING MOVABLE TO FIRST AND SECOND POSITIONS, MEANS INCLUDING A PUMP INTERCONNECTING SAID SECOND INLET MEANS AND SAID SECOND OUTLET MEANS IN FLUID-FLOW RELATIONSHIP, SAID PUMP HAVING A SUCTION INLET AND A DISCHARGE OUTLET, SAID SUCTION INLET BEING CONNECTED TO SAID SECOND OUTLET MEANS, SAID DISCHARGE OUTLET OF SAID PUMP BEING CONNECTED ONLY TO SAID SECOND INLET MEANS
Claim 2
Dependent Claim
297 words
STRAINING APPARATUS COMPRISING FIRST FILTERING MEANS, INCLUDING A FIRST FILTER AND SECOND FILTERING MEANS INCLUDING A SECOND FILTER, SAID FIRST FILTERING MEANS HAVING FIRST INLETOUTLET MEANS AND SECOND INLET-OUTLET MEANS, SAID SECOND FILTERING MEANS HAVING THIRD INLET-OUTLET MEANS AND FOURTH INLET-OUTLET MEANS, SAID FIRST FILTER BEING DISPOSED IN THE LIQUID PATH BETWEEN SAID FIRST AND SECOND INLET-OUTLET MEANS, SAID SECOND FILTER BEING DISPOSED IN THE LIQUID PATH BETWEEN SAID THIRD AND FOURTH INLET-OUTLET MEANS, FIRST LIQUID CARRYING MEANS CONNECTED BETWEEN SAID FIRST INLETOUTLET MEANS AND SAID FOURTH INLET-OUTLET MEANS, FIRST VALVE MEANS INTERPOSED IN SAID FIRST LIQUID CARRYING MEANS, SECOND LIQUID CARRYING MEANS CONNECTED BETWEEN SAID SECOND INLET-OUTLET MEANS AND SAID THIRD INLET-OUTLET MEANS, SECOND VALVE MEANS INTERPOSED IN SAID SECOND LIQUID CARRYING MEANS, A FIRST INLET MEANS IN SAID FIRST LIQUID CARRYING MEANS FOR RECEIVING A LIQUID TO BE FILTERED, A FIRST OUTLET MEANS IN SAID FIRST LIQUID CARRYING MEANS FOR DISCHARGING A LIQUID WHICH HAS PASSED THROUGH BOTH OF SAID FILTERS, A SECOND INLET MEANS IN SAID SECOND LIQUID CARRYING MEANS, A SECOND OUTLET MEANS IN SAID SECOND LIQUID CARRYING MEANS, SAID FIRST VALVE MEANS BEING INTERPOSED BETWEEN SAID FIRST INLET AND FIRST OUTLET MEANS AND ALSO BEING INTERPOSED BETWEEN SAID FIRST AND FOURTH INLET-OUTLET MEANS, SAID SECOND VALVE MEANS BEING INTERPOSED BETWEEN SAID SECOND INLET AND SECOND OUTLET MEANS AND ALSO BEING INTERPOSED BETWEEN SAID SECOND AND THIRD INLET-OUTLET MEANS, SAID FIRST AND SECOND VALVE MEANS BEING MOVABLE TO FIRST AND SECOND POSITIONS, MEANS INCLUDING A PUMP INTERCONNECTING SAID SECOND INLET MEANS AND SAID SECOND OUTLET MEANS IN FLUID-FLOW RELATIONSHIP, SAID PUMP HAVING A SUCTION INLET AND A DISCHARGE OUTLET, SAID SUCTION INLET BEING CONNECTED TO SAID SECOND OUTLET MEANS, SAID DISCHARGE OUTLET OF SAID PUMP BEING CONNECTED ONLY TO SAID SECOND INLET MEANS
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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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |