US3256994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separator
Assignee: Beloit Corp
•
Filing: 1963-02-11
•
Granted: 1966-06-21
•
Expires: 1983-02-11
Abstract
No abstract record available.
Inventors
- 👤 Lester M Koelsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:20
CPC Classifications
B; B04; B04B; B04B3/00; B04B3/04; B04B1/00; B04B1/20; B04B2001/2058; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A CENTRIFUGAL SEPARATOR FOR SEPARATING THE LIQUID AND SOLID FRACTIONS OF A STOCK MATERIAL CONTAINING SAID FRACTIONS COMPRISING AN OPEN ENDED PERFORATED SHELL OF TAPERED CONICAL CONFIGURATION HAVING A LOWER CONVERGENT END FOR DISCHARGE AND AN UPPER DIVERGENT END FOR RECEIVING STOCK MATERIAL AND MOUNTED FOR ROTATION ABOUT A SUBSTANTIALLY VERTICAL AXIS, A FIRST DRIVE MEANS TO ROTATE THE SHELL AT A RAPID RATE TO PROVIDE SUFFICIENT CENTRIFUGAL FORCE TO EXPEL SAID LIQUID FRACTION FROM SAID STOCK MATERIAL THROUGH THE PERFORATIONS OF SAID SHELL AND TO MOVE SAID SOLID MATERIAL BY CENTRIFUGAL FORCE TOWARD THE DIVERGENT END OF SAID SHELL, A RIBBON SCREW ELEMENT HAVING AN OPEN CENTER WITH AN UNOBSTRUCTED INNER EDGE FORMING A SPIRAL FLIGHT CONVEYOR OF CONICAL CONFIGURATION CONCENTRICALLY DISPOSED WITHIN SAID SHELL WITH THE PERIPHERY THEREOF POSITIONED IN CLOSE PROXIMITY TO AND COEXTENDING WITH THE INNER WALL OF SAID SHELL TO ENGAGE SOLID MATERIAL THEREON, THE AREAS BETWEEN TURNS OF THE SPIRAL BEING OPEN RADIALLY INWARDLY, SECOND DRIVE MEANS TO ROTATE SAID CONVEYOR AT A RATE DIFFERENT THAN SAID SHELL TO PROVIDE SUFFICIENT REL-
Claim 2
Dependent Claim
178 words
A CENTRIFUGAL SEPARATOR FOR SEPARATING THE LIQUID AND SOLID FRACTIONS OF A STOCK MATERIAL CONTAINING SAID FRACTIONS COMPRISING AN OPEN ENDED PERFORATED SHELL OF TAPERED CONICAL CONFIGURATION HAVING A LOWER CONVERGENT END FOR DISCHARGE AND AN UPPER DIVERGENT END FOR RECEIVING STOCK MATERIAL AND MOUNTED FOR ROTATION ABOUT A SUBSTANTIALLY VERTICAL AXIS, A FIRST DRIVE MEANS TO ROTATE THE SHELL AT A RAPID RATE TO PROVIDE SUFFICIENT CENTRIFUGAL FORCE TO EXPEL SAID LIQUID FRACTION FROM SAID STOCK MATERIAL THROUGH THE PERFORATIONS OF SAID SHELL AND TO MOVE SAID SOLID MATERIAL BY CENTRIFUGAL FORCE TOWARD THE DIVERGENT END OF SAID SHELL, A RIBBON SCREW ELEMENT HAVING AN OPEN CENTER WITH AN UNOBSTRUCTED INNER EDGE FORMING A SPIRAL FLIGHT CONVEYOR OF CONICAL CONFIGURATION CONCENTRICALLY DISPOSED WITHIN SAID SHELL WITH THE PERIPHERY THEREOF POSITIONED IN CLOSE PROXIMITY TO AND COEXTENDING WITH THE INNER WALL OF SAID SHELL TO ENGAGE SOLID MATERIAL THEREON, THE AREAS BETWEEN TURNS OF THE SPIRAL BEING OPEN RADIALLY INWARDLY, SECOND DRIVE MEANS TO ROTATE SAID CONVEYOR AT A RATE DIFFERENT THAN SAID SHELL TO PROVIDE SUFFICIENT REL-
References Cited (Backward Citations)
US587292A
Cited
US1336722A
Cited
US2498767A
Cited
US2516078A
Cited
US3011647A
Cited
US3116243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |