Patent US3202364A successfully refreshed from Google Patents.
US3202364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for grinding material
Assignee: Cementfabrik Holderbank-Wildegg AG
•
Filing: 1962-10-23
•
Granted: 1965-08-24
•
Expires: 1982-10-23
Abstract
No abstract record available.
Inventors
- 👤 Wieland Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:12
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/18; B02C17/002; B02C17/04; B02C17/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF GRINDING MATERIAL COMPRISING THE STEPS OF FORMING A LAYNER OF MOVABLE GRINDING ELEMENTS IN AN ANNULAR SPACE WHOSE INNER AND OUTER PERIPHERIES ARE DEFINED BY A PAIR OF RADIALLY SPACED, COAXIAL, CIRCULAR CYLINDRICAL WALLS; ACCELERATING SAID WALLS AT THE SAME RATE TO THE SAME PREDETERMINED ANGULAR VELOCITY ABOUT THEIR LONGITUDINAL AXES; BRAKING ONE OF SAID WALLS TO THEREBY BRING IT TO REST AND PRODUCE RELATIVE MOVEMENT BETWEEN THE GRINDING ELEMENTS; ADMIXING THE MATERIAL TO BE GROUND WITH SAID LAYER OF GRINDING ELEMENTS SO THAT IT IS GROUND BY THE RELATIVE MOVEMENT OF THOSE ELEMENTS IN RELATION TO ONE ANOTHER; AND DISCHARGING THE GROUND MATERIAL FROM SAID LAYER.
Claim 2
Independent Claim
110 words
THE METHOD OF GRINDING MATERIAL COMPRISING THE STEPS OF FORMING A LAYNER OF MOVABLE GRINDING ELEMENTS IN AN ANNULAR SPACE WHOSE INNER AND OUTER PERIPHERIES ARE DEFINED BY A PAIR OF RADIALLY SPACED, COAXIAL, CIRCULAR CYLINDRICAL WALLS; ACCELERATING SAID WALLS AT THE SAME RATE TO THE SAME PREDETERMINED ANGULAR VELOCITY ABOUT THEIR LONGITUDINAL AXES; BRAKING ONE OF SAID WALLS TO THEREBY BRING IT TO REST AND PRODUCE RELATIVE MOVEMENT BETWEEN THE GRINDING ELEMENTS; ADMIXING THE MATERIAL TO BE GROUND WITH SAID LAYER OF GRINDING ELEMENTS SO THAT IT IS GROUND BY THE RELATIVE MOVEMENT OF THOSE ELEMENTS IN RELATION TO ONE ANOTHER; AND DISCHARGING THE GROUND MATERIAL FROM SAID LAYER.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |