US3672503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separator for fibrous material
Assignee: Individual
•
Filing: 1969-05-15
•
Granted: 1972-06-27
•
Expires: 1989-05-15
Abstract
Abstract A centrifugal separator with a circular inner chamber and an outer chamber of decreasing cross section from a relatively large tangential inlet to a relatively small tangential outlet. The two chambers communicate through a semicircular arrangement of individually adjustable blades forming a portion of the boundary between the chambers extending between the tangential inlet and outlet.
Inventors
- 👤 Andre Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:31
CPC Classifications
B; B04; B04C; B04C7/00; B04C1/00; B27; B27N; B27N3/00; B27N3/08; B27N3/10; B27N3/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
143 words
A centrifugal separator for separating relatively course fibers from relatively fine fibers comprising a spiral-shaped body, said body being provided with a tangentially disposed inlet passage for the entry of an air current carrying fibers for separation and a tangentially disposed outlet passage on the opposite side of said body from said inlet passage, a plurality of movable vanes disposed in a semi-circular arrangement within said body, extending between said inlet and outlet passages and separating the interior of said body into an outer spiral passage and an inner circular passage, a central outlet passage communicating with said inner passage and disposed perpendicular to the plane of said inlet and outlet passages, and means for independently adjusting each vane to provide an air current path for recycling certain fibers from said outer passage to said inner passage and back to said outer passage.
Claim 2
Dependent Claim
143 words
A centrifugal separator for separating relatively course fibers from relatively fine fibers comprising a spiral-shaped body, said body being provided with a tangentially disposed inlet passage for the entry of an air current carrying fibers for separation and a tangentially disposed outlet passage on the opposite side of said body from said inlet passage, a plurality of movable vanes disposed in a semi-circular arrangement within said body, extending between said inlet and outlet passages and separating the interior of said body into an outer spiral passage and an inner circular passage, a central outlet passage communicating with said inner passage and disposed perpendicular to the plane of said inlet and outlet passages, and means for independently adjusting each vane to provide an air current path for recycling certain fibers from said outer passage to said inner passage and back to said outer passage.
Claim 3
Dependent Claim
37 words
A centrifugal separator as set forth in claim 1 wherein the vanes adjacent said inlet passage are inclined outwardly into said outer passage and the vanes adjacent said outlet passage are inclined inwardly into said inner passage.
References Cited (Backward Citations)
US1897195A
Cited
US1914282A
Cited
US2039692A
Cited
US2087789A
Cited
DE1003016B
Cited
US3001727A
Cited
US3091334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |