US3423032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for comminution
Assignee: US STONEWARE Inc
•
Filing: 1966-08-05
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Granted: 1969-01-21
•
Expires: 1986-08-05
Abstract
No abstract record available.
Inventors
- 👤 John S Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/16; B01; B01F; B01F27/00; B01F27/80; B01F33/00; B01F33/25; B01F33/251
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A METHOD OF COMMINUTING CONSISTING ESSENTIALLY OF THE STEPS OF FRICTIONALLY ROTATING A PLURALITY OF GENERALLY SPHERICAL GRINDING ELEMENTS SUBSTANTIALLY ABOUT THE CENTERS THEREOF WITHOUT ANY SIGNIFICANT IMPACT THEREBETWEEN WITHIN A GENERALLY CYLINDRICAL VESSEL BY CAUSING RELATIVE ROTATION BETWEEN THE VESSEL AND AN AGITATOR, IN WHICH EVERY CROSS SECTION NORMAL TO THE AXIS THEREOF DEDINES A CIRCLE, DISPOSED COAXIALLY IN THE VESSEL AND SPACED FROM THE INNER WALL THEREOF A DISTANCE AT LEAST TWICE THE DIAMETER OF THE GRINDING ELEMENTS, MAINTAINING THE GRINDING ELEMENTS GENERALLY IN A CONTINUUM SO THAT THE GRINDING ELEMENTS WHICH ARE NOT IN CONTACT WITH THE AGITATOR ARE CAUSED TO BE ROTATED BY THOSE GRINDING ELEMENTS WHICH ARE IN CONTACT WITH THE AGITATOR, AND PASSING THE MATERIAL TO BE COMMINUTED THROUGH THE SPHERICAL GRINDING ELEMENTS SO THAT SAID MATERIAL IS REDUCED IN SIZE BY THE SHEARING ACTION BETWEEN ADJACENT ROTATING GRINDING ELEMENTS AND BETWEEN THE ROTATING GRINDING ELEMENTS AND THE WALLS OF THE VESSEL AND THE AGITATOR.
Claim 2
Independent Claim
161 words
A METHOD OF COMMINUTING CONSISTING ESSENTIALLY OF THE STEPS OF FRICTIONALLY ROTATING A PLURALITY OF GENERALLY SPHERICAL GRINDING ELEMENTS SUBSTANTIALLY ABOUT THE CENTERS THEREOF WITHOUT ANY SIGNIFICANT IMPACT THEREBETWEEN WITHIN A GENERALLY CYLINDRICAL VESSEL BY CAUSING RELATIVE ROTATION BETWEEN THE VESSEL AND AN AGITATOR, IN WHICH EVERY CROSS SECTION NORMAL TO THE AXIS THEREOF DEDINES A CIRCLE, DISPOSED COAXIALLY IN THE VESSEL AND SPACED FROM THE INNER WALL THEREOF A DISTANCE AT LEAST TWICE THE DIAMETER OF THE GRINDING ELEMENTS, MAINTAINING THE GRINDING ELEMENTS GENERALLY IN A CONTINUUM SO THAT THE GRINDING ELEMENTS WHICH ARE NOT IN CONTACT WITH THE AGITATOR ARE CAUSED TO BE ROTATED BY THOSE GRINDING ELEMENTS WHICH ARE IN CONTACT WITH THE AGITATOR, AND PASSING THE MATERIAL TO BE COMMINUTED THROUGH THE SPHERICAL GRINDING ELEMENTS SO THAT SAID MATERIAL IS REDUCED IN SIZE BY THE SHEARING ACTION BETWEEN ADJACENT ROTATING GRINDING ELEMENTS AND BETWEEN THE ROTATING GRINDING ELEMENTS AND THE WALLS OF THE VESSEL AND THE AGITATOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |