Patent US3169111A successfully refreshed from Google Patents.
US3169111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dewatering screen having liquid film disrupting barrier
Assignee: Individual
•
Filing: 1960-02-08
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Granted: 1965-02-09
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Expires: 1980-02-08
Abstract
No abstract record available.
Inventors
- 👤 Colin G Rose
- 👤 Jr Herbert William Derrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:37
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05; B01D29/44; B01D29/445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A SCREENING DEVICE COMPRISING A PLURALITY OF ELONGATE ROD MEMBERS MOUNTED IN A CLOSELY SPACED SUBSTANTIALLY PARALLEL RELATIONSHIP, SAID ELONGATE ROD MEMBERS FORMING A SCREENING SURFACE COMPOSED OF A PLURALITY OF ELONGATE OPENINGS GENERALLY TRANSVERSE TO THE DIRECTION OF TRAVEL OF MATERIAL ACROSS SAID SCREENING SURFACE, SAID SCREENING SURFACE BEING TILTED A PLURALITY OF CROSSBARS FOR MAINTAINING SAID ROD MEMBERS IN SAID CLOSELY SPACED SUBSTANTIALLY PARALLEL RELATIONSHIP, A PLURALITY OF BARRIER MEMBERS MOUNTED ADJACENT THE UNDERNEATH SIDES OF SAID ROD MEMBERS AND EXTENDING TRANSVERSE TO THE NORMAL DIRECTION OF TRAVEL OF THE MATERIAL ACROSS SAID SCREENING SURFACE, SAID BARRIER MEMBERS PROJECTING DOWNWARDLY FROM THE UNDERNEATH SIDES OF SAID ROD MEMBERS SO THAT LIQUID ADHERING TO THE BOTTOM THEREOF AND ATTEMPTING TO TRAVEL IN SAID DIRECTION OF TRAVEL IS PREVENTED FROM DOING SUCH.
Claim 2
Dependent Claim
132 words
A SCREENING DEVICE COMPRISING A PLURALITY OF ELONGATE ROD MEMBERS MOUNTED IN A CLOSELY SPACED SUBSTANTIALLY PARALLEL RELATIONSHIP, SAID ELONGATE ROD MEMBERS FORMING A SCREENING SURFACE COMPOSED OF A PLURALITY OF ELONGATE OPENINGS GENERALLY TRANSVERSE TO THE DIRECTION OF TRAVEL OF MATERIAL ACROSS SAID SCREENING SURFACE, SAID SCREENING SURFACE BEING TILTED A PLURALITY OF CROSSBARS FOR MAINTAINING SAID ROD MEMBERS IN SAID CLOSELY SPACED SUBSTANTIALLY PARALLEL RELATIONSHIP, A PLURALITY OF BARRIER MEMBERS MOUNTED ADJACENT THE UNDERNEATH SIDES OF SAID ROD MEMBERS AND EXTENDING TRANSVERSE TO THE NORMAL DIRECTION OF TRAVEL OF THE MATERIAL ACROSS SAID SCREENING SURFACE, SAID BARRIER MEMBERS PROJECTING DOWNWARDLY FROM THE UNDERNEATH SIDES OF SAID ROD MEMBERS SO THAT LIQUID ADHERING TO THE BOTTOM THEREOF AND ATTEMPTING TO TRAVEL IN SAID DIRECTION OF TRAVEL IS PREVENTED FROM DOING SUCH.
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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |