Patent US3191874A successfully refreshed from Google Patents.
US3191874A
Expired / Lapsed
US
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Disintegrators
Assignee: Mine and Smelter Supply Co
•
Filing: 1963-07-30
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Granted: 1965-06-29
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Expires: 1983-07-30
Abstract
No abstract record available.
Inventors
- 👤 Donald J Drinkwater
- 👤 Joseph R Grout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:16
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/18; B02C17/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A DISINTEGRATOR COMPRISING A DRUM; LIFTER BARS DISPOSED IN SAID DRUM; LINER PLATES DISPOSED BETWEEN SAID BARS, AND MEANS ASSOCIATED WITH SAID DRUM FOR ADJUSTING THE HEIGHT OF SAID LINER PLATES TO SECURE A PREDETERMINED LIFT OF SAID BARS, SAID LIFTER BARS EXTENDING RADIALLY A SUBSTANTIAL DISTANCE INTO THE INTERIOR OF SAID DRUM BEYOND THE LIMITS OF SAID LINER PLATES AT ALL TIMES DURING NORMAL OPERATION OF THE DISINTEGRATOR.
Claim 2
Dependent Claim
69 words
A DISINTEGRATOR COMPRISING A DRUM; LIFTER BARS DISPOSED IN SAID DRUM; LINER PLATES DISPOSED BETWEEN SAID BARS, AND MEANS ASSOCIATED WITH SAID DRUM FOR ADJUSTING THE HEIGHT OF SAID LINER PLATES TO SECURE A PREDETERMINED LIFT OF SAID BARS, SAID LIFTER BARS EXTENDING RADIALLY A SUBSTANTIAL DISTANCE INTO THE INTERIOR OF SAID DRUM BEYOND THE LIMITS OF SAID LINER PLATES AT ALL TIMES DURING NORMAL OPERATION OF THE DISINTEGRATOR.
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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |