US3136536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating finely divided material in suspension
Assignee: Allis Chalmers Corp
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Filing: —
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Granted: 1964-06-09
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Expires: 1981-06-09
Abstract
No abstract record available.
Inventors
- 👤 Heinemann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:39
CPC Classifications
F; F27; F27B; F27B15/00; F27B15/003; B; B01; B01J; B01J15/00; B01J19/00; B01J19/26; B01J8/00; B01J8/08; C; C04; C04B; C04B7/00; C04B7/36; C04B7/43; C04B7/44; C22; C22B; C22B1/00; C22B1/02; C22B1/10; C22B1/14; F23; F23B; F23B7/00; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00117; B01J2219/00119; B01J2219/00121; B01J2219/00159; B01J2219/00164; F23B2700/00; F23B2700/023
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A METHOD OF TREATING POWDERY MATERIAL IN SUSPENSION, COMPRISING THE STEPS OF: FIRST, MOVING THE GAS FROM A SOURCE THEREOF IN A STREAM DIRECTED INWARDLY ALONG A SPIRAL PATH TO A LOCATION CENTRAL OF THE SPIRAL PATH; SECOND, INJECTING THE POWDERY MATERIAL TO BE TREATED INTO THE GAS STREAM AT A POINT INTERMEDIATE SAID SOURCE AND SAID LOCATION THEREBY SUSPENDING THE POWDERY MATERIAL IN THE GAS; THIRD, CONTROLLING THE VELOCITY OF THE GAS STREAM SO THAT THE CENTRIFUGAL FORCE UPON SAID POWDERY MATERIAL EXCEEDS THE FRICTIONAL FORCE BETWEEN THE MATERIAL AND THE GAS AS EVIDENCED BY THE MATERIAL MOVING SPIRALLY OUTWARD FROM THE INJECTING POINT TO A POINT OF ESCAPE FROM SAID STREAM; AND
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |