Patent US3329353A successfully refreshed from Google Patents.
US3329353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crushing and grinding plant
Assignee: FLSmidth and Co AS
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Filing: 1964-07-10
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Granted: 1967-07-04
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Expires: 1984-07-10
Abstract
No abstract record available.
Inventors
- 👤 Knudsen Poul Asker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:08
CPC Classifications
B; B02; B02C; B02C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PLANT FOR GRINDING QUARRIED MATERIAL, WHICH COMPRISES A CRUSHER HAVING AN INLET, AND OUTLET FOR CRUSHED MATERIAL, AND AN OUTLET FOR AIR, MEANS FOR SUPPLYING MATERIAL FROM THE QUARRY TO THE CRUSHER, A TUBE MILL HAVING AN INLET AND AN OUTLET, A CONNECTION FOR THE PASSAGE OF MATERIAL FROM THE MATERIAL OUTLET OF THE CRUSHER TO THE MILL INLET, MEANS FOR SUPPLYING SEPARATE AIR STREAMS FOR SWEEPING THE CRUSHER AND THE MILL AND CARRYING MATERIAL THEREFROM IN SUSPENSION, A SEPARATOR FOR SEPARATING A COARSE FRACTION FROM MATERIAL ENTERING THE SEPARATOR IN SUSPENSION IN AN AIR STREAM, SEPARATE MEANS FOR CONDUCTING AIR STREAMS WITH MATERIAL IN SUSPENSION THEREIN FROM THE AIR OUTLET OF THE CRUSHER AND THE OUTLET OF THE MILL TO THE SEPARATOR, AND MEANS FOR RETURNING THE COARSE FRACTION FROM THE SEPARATOR TO THE MILL INLET FOR FURTHER GRINDING.
Claim 2
Dependent Claim
141 words
A PLANT FOR GRINDING QUARRIED MATERIAL, WHICH COMPRISES A CRUSHER HAVING AN INLET, AND OUTLET FOR CRUSHED MATERIAL, AND AN OUTLET FOR AIR, MEANS FOR SUPPLYING MATERIAL FROM THE QUARRY TO THE CRUSHER, A TUBE MILL HAVING AN INLET AND AN OUTLET, A CONNECTION FOR THE PASSAGE OF MATERIAL FROM THE MATERIAL OUTLET OF THE CRUSHER TO THE MILL INLET, MEANS FOR SUPPLYING SEPARATE AIR STREAMS FOR SWEEPING THE CRUSHER AND THE MILL AND CARRYING MATERIAL THEREFROM IN SUSPENSION, A SEPARATOR FOR SEPARATING A COARSE FRACTION FROM MATERIAL ENTERING THE SEPARATOR IN SUSPENSION IN AN AIR STREAM, SEPARATE MEANS FOR CONDUCTING AIR STREAMS WITH MATERIAL IN SUSPENSION THEREIN FROM THE AIR OUTLET OF THE CRUSHER AND THE OUTLET OF THE MILL TO THE SEPARATOR, AND MEANS FOR RETURNING THE COARSE FRACTION FROM THE SEPARATOR TO THE MILL INLET FOR FURTHER GRINDING.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |