Patent US3294378A successfully refreshed from Google Patents.
US3294378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-phase contactor disks
Assignee: Allis Chalmers Corp
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Filing: 1963-12-09
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Granted: 1966-12-27
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Expires: 1983-12-09
Abstract
No abstract record available.
Inventors
- 👤 Patrick G Grimes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:10
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A TWO-PHASE CONTACT COMPRISING A PLURALITY OF SCREENS MOUNTED FOR ROTATION IN VERTICAL PLANES ABOUT A HORIZONTAL AXIS, SAID SCREENS BEING LOCATED SO AS TO BE PARTIALLY SUBMERGED IN A LIQUID TO BE TREATED, SAID SCREENS COMPRISING A PLURALITY OF ARCUATELY SPACED SUBSTANTIALLY RADIALLY EXTENDING MEMBERS AND RADIALLY SPACED ANNULAR MEMBERS INTERCONNECTING SAID RADIAL MEMBERS, SAID RADIALLY EXTENDING AND SAID ANNULAR MEMBERS FORMING A MESH OF SUFFICIENTLY SMALL SIZE TO RETAIN LIQUID BY SURFACE TENSION IN INDIVIDUAL MESHES AND TO COMBINE THE LIQUID IN ADJACENT MESHES INTO A CONTINUOUS LIQUID FILM AND SAID RADIALLY EXTENDING MEMBERS ELEVATING LIQUID AS THEY EMERGE FROM SAID LIQUID AND DIRECTING SAID LIQUID TO FLOW RADIALLY INWARD UNDER THE FORCE OF GRAVITY IN A CASCADING MANNER OVER SAID RADIALLY SPACED ANNULAR MEMBERS AND IN AN ELONGATED PATH ALONG SAID SCREEN AS SAID SCREEN IS BEING ROTATED.
Claim 2
Dependent Claim
141 words
A TWO-PHASE CONTACT COMPRISING A PLURALITY OF SCREENS MOUNTED FOR ROTATION IN VERTICAL PLANES ABOUT A HORIZONTAL AXIS, SAID SCREENS BEING LOCATED SO AS TO BE PARTIALLY SUBMERGED IN A LIQUID TO BE TREATED, SAID SCREENS COMPRISING A PLURALITY OF ARCUATELY SPACED SUBSTANTIALLY RADIALLY EXTENDING MEMBERS AND RADIALLY SPACED ANNULAR MEMBERS INTERCONNECTING SAID RADIAL MEMBERS, SAID RADIALLY EXTENDING AND SAID ANNULAR MEMBERS FORMING A MESH OF SUFFICIENTLY SMALL SIZE TO RETAIN LIQUID BY SURFACE TENSION IN INDIVIDUAL MESHES AND TO COMBINE THE LIQUID IN ADJACENT MESHES INTO A CONTINUOUS LIQUID FILM AND SAID RADIALLY EXTENDING MEMBERS ELEVATING LIQUID AS THEY EMERGE FROM SAID LIQUID AND DIRECTING SAID LIQUID TO FLOW RADIALLY INWARD UNDER THE FORCE OF GRAVITY IN A CASCADING MANNER OVER SAID RADIALLY SPACED ANNULAR MEMBERS AND IN AN ELONGATED PATH ALONG SAID SCREEN AS SAID SCREEN IS BEING ROTATED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |