US3074554A
Expired / Lapsed
US
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Assignee: BIXBY-ZIMMER ENGINEERING Co A CORP OF DE
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Filing: 1958-09-11
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Granted: 1963-01-22
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Expires: 1978-09-11
Abstract
No abstract record available.
Inventors
- 👤 William E Mullins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:29
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A SCREEN FOR CLASSIFYING PARTICLES ACCORDING TO SIZE AND FOR SEPARATING A LIQUID FROM A SOLID IN WHICH THE RETAINED MATERIAL TRAVELS ACROSS THE SCREEN SURFACE IN EFFECTING THE SEPARATION COMPRISING A PLURALITY OF ROD MEMBERS MAINTAINED IN A CLOSELY SPACED SUBSTANTIALLY PARALLEL RELATIONSHIP TO DEFINE A SUBSTANTIALLY FLAT SCREEN, SAID ROD MEMBERS EXTENDING IN THE DIRECTION OF MATERIAL TRAVEL ACROSS SAID SCREEN, EACH OF SAID ROD MEMBERS HAVING AT LEAST ONE HELICAL CREST EXTENDING THE LENGTH THEREOF WHEREBY ADJACENT ROD MEMBERS COOPERATE TO FORM A VARIABLE OPENING THEREBETWEEN, SAID HELICAL CREST SCRAPING THE UNDERSIZE AND THE LIQUID FROM THE OVERSIZE AS THE LATTER TRAVELS OVER THE SCREEN AND DIRECTING THE UNDERSIZE AND LIQUID THROUGH THE OPENING BETWEEN SAID ROD MEMBERS.
Claim 2
Dependent Claim
121 words
A SCREEN FOR CLASSIFYING PARTICLES ACCORDING TO SIZE AND FOR SEPARATING A LIQUID FROM A SOLID IN WHICH THE RETAINED MATERIAL TRAVELS ACROSS THE SCREEN SURFACE IN EFFECTING THE SEPARATION COMPRISING A PLURALITY OF ROD MEMBERS MAINTAINED IN A CLOSELY SPACED SUBSTANTIALLY PARALLEL RELATIONSHIP TO DEFINE A SUBSTANTIALLY FLAT SCREEN, SAID ROD MEMBERS EXTENDING IN THE DIRECTION OF MATERIAL TRAVEL ACROSS SAID SCREEN, EACH OF SAID ROD MEMBERS HAVING AT LEAST ONE HELICAL CREST EXTENDING THE LENGTH THEREOF WHEREBY ADJACENT ROD MEMBERS COOPERATE TO FORM A VARIABLE OPENING THEREBETWEEN, SAID HELICAL CREST SCRAPING THE UNDERSIZE AND THE LIQUID FROM THE OVERSIZE AS THE LATTER TRAVELS OVER THE SCREEN AND DIRECTING THE UNDERSIZE AND LIQUID THROUGH THE OPENING BETWEEN SAID ROD MEMBERS.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |