Patent US3381609A successfully refreshed from Google Patents.
US3381609A
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Assignee: Individual
•
Filing: 1966-06-20
•
Granted: 1968-05-07
•
Expires: 1986-06-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Neil Malarkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:21
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PRESS FOR EXTRACTING LIQUID FROM A LIQUID-SOLID MIXTURE COMPRISING OPPOSED CONVERGING WALLS FORMING ONE SET OF SIDES OF A PROCESSING CHAMBER OF DIMINISHING SIDETO-SIDE DIMENSION PROGRESSING IN THE DIRECTION OF THE CONVERGENCE OF THE WALLS, WHICH WALLS ARE IMPERVIOUS TO LIQUID FLOW THERETHROUGH, AT LEAST ONE OF SAID WALLS BEING MOVABLE AND OPERATING TO TRANSPORT MATERIAL TO BE FILTERED THROUGH SAID PROCESSING CHMBER; OPPOSED ELONGATED FLOW BARRIERS IN FLUID-TIGHT RELATIONSHIP WITH SAID CONVERGING WALLS, EXTENDING IN THE DIRECTION OF THE CONVERGENCE OF SAID WALLS, AND FORMING ANOTHER SET OF SIDES OF THE PROCESSING CHAMBER; MEANS EXTENDING IN THE DIRECTION OF THE CONVERGENCE OF SAID WALLS DIVIDING THE CHAMBER INTO A FILTRATE ZONE FOR HOLDING FILTRATE, WHICH ZONE IS BOUNDED ON ONE SIDE BY A FLOW BARRIER, AND A ZONE FOR HOLDING MATERIAL TO BE FILTERED SPACED LATERALLY FROM THIS FILTRATE ZONE; AND MEANS CONNECTED TO THE FILTRATE ZONE FOR DRAWING OFF FILTRATE THEREIN.
Claim 2
Dependent Claim
154 words
A PRESS FOR EXTRACTING LIQUID FROM A LIQUID-SOLID MIXTURE COMPRISING OPPOSED CONVERGING WALLS FORMING ONE SET OF SIDES OF A PROCESSING CHAMBER OF DIMINISHING SIDETO-SIDE DIMENSION PROGRESSING IN THE DIRECTION OF THE CONVERGENCE OF THE WALLS, WHICH WALLS ARE IMPERVIOUS TO LIQUID FLOW THERETHROUGH, AT LEAST ONE OF SAID WALLS BEING MOVABLE AND OPERATING TO TRANSPORT MATERIAL TO BE FILTERED THROUGH SAID PROCESSING CHMBER; OPPOSED ELONGATED FLOW BARRIERS IN FLUID-TIGHT RELATIONSHIP WITH SAID CONVERGING WALLS, EXTENDING IN THE DIRECTION OF THE CONVERGENCE OF SAID WALLS, AND FORMING ANOTHER SET OF SIDES OF THE PROCESSING CHAMBER; MEANS EXTENDING IN THE DIRECTION OF THE CONVERGENCE OF SAID WALLS DIVIDING THE CHAMBER INTO A FILTRATE ZONE FOR HOLDING FILTRATE, WHICH ZONE IS BOUNDED ON ONE SIDE BY A FLOW BARRIER, AND A ZONE FOR HOLDING MATERIAL TO BE FILTERED SPACED LATERALLY FROM THIS FILTRATE ZONE; AND MEANS CONNECTED TO THE FILTRATE ZONE FOR DRAWING OFF FILTRATE THEREIN.
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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) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |