Patent US2806771A successfully refreshed from Google Patents.
US2806771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Densifying fine powders
Assignee: JM Huber Corp
•
Filing: 1952-07-16
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Granted: 1957-09-17
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Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 Cuthbertson Charles Russell
- 👤 Bertorelli Orlando Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:52
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/20; B65B1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
THE METHOD OF DENSIFYING FLUFFY FINE POWER WHICH COMPRISES CONTINOUSLY MOVING A SUFACE OF AN ENDLESS FILTERING MEDIUM FINE ENOUGH TO SEPARATE THE POWDER FROM AIR INTO AND THROUGH FLUFFY MASS OF SAID POWDER WHILE APPLYING SUCTION THROUGH SAID SURFACE TO POWDER IN SUCH MASS, THEREBY CONTINUOUSLY ATTRACTING PARTICLES OF THE POWER FROM SAID MASS TO SAID SURFACE, FORMING A LAYER OF THE ATTRACTED POWER PARTICLES ON SAID SURFACE AND WITHDRAWING AIR FROM AND THUS COMPACTING POWER IN SAID LAYER; BY CONTINUING THE APPLICATION OF SUCTION THROUGH SAID SURFACE IN A PART OF ITS EXTENDING AWAY FROM SAID MASS, HOLDING TO SAIS SURFACE A LAYER OF DENSIFIED POWDER SO FORMED AND CARRING SUCH LAYER AWAY FROM SAID MASS ON THE SAID SURFACE; AND DISCHARGING DINSIFIED FINE POWDER FROM SAID SURFACE IN A PART OF ITS PATH AWAY FROM SAID MASS.
Claim 2
Independent Claim
140 words
THE METHOD OF DENSIFYING FLUFFY FINE POWER WHICH COMPRISES CONTINOUSLY MOVING A SUFACE OF AN ENDLESS FILTERING MEDIUM FINE ENOUGH TO SEPARATE THE POWDER FROM AIR INTO AND THROUGH FLUFFY MASS OF SAID POWDER WHILE APPLYING SUCTION THROUGH SAID SURFACE TO POWDER IN SUCH MASS, THEREBY CONTINUOUSLY ATTRACTING PARTICLES OF THE POWER FROM SAID MASS TO SAID SURFACE, FORMING A LAYER OF THE ATTRACTED POWER PARTICLES ON SAID SURFACE AND WITHDRAWING AIR FROM AND THUS COMPACTING POWER IN SAID LAYER; BY CONTINUING THE APPLICATION OF SUCTION THROUGH SAID SURFACE IN A PART OF ITS EXTENDING AWAY FROM SAID MASS, HOLDING TO SAIS SURFACE A LAYER OF DENSIFIED POWDER SO FORMED AND CARRING SUCH LAYER AWAY FROM SAID MASS ON THE SAID SURFACE; AND DISCHARGING DINSIFIED FINE POWDER FROM SAID SURFACE IN A PART OF ITS PATH AWAY FROM SAID MASS.
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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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |