US3678598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-drum dryer
Assignee: Phillips Petroleum Co
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Filing: 1970-06-19
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Granted: 1972-07-25
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Expires: 1990-06-19
Abstract
Abstract A dual-drum rotating dryer having an annular passageway between the drums through which the material being dried is caused to pass as it progresses through the dryer, the dryer being comprised of an outer drum and an inner drum positioned therein.
Inventors
- 👤 Francisco K Quiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:15
CPC Classifications
F; F26; F26B; F26B11/00; F26B11/02; F26B11/028
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
188 words
A rotary dryer comprising: a. an outer chamber adapted for rotation about its longitudinal axis, said chamber being adapted at a first end with a port adapted for the introduction of particulate matter and for the discharge of gases and being adapted at a second and opposite end for the discharge of particulate matter; b. an inner chamber unfixedly positioned within said outer chamber, and in spaced relationship therefrom to form an annular passageway therebetween, said inner chamber being supported on vanes positioned in spaced relationship and extending inwardly to said inner chamber from the inner wall of said outer chamber, said inner chamber being closed at a first end positioned proximate the first end of said outer chamber, said inner chamber being open at a second end positioned proximate said second end of said inner chamber, said inner chamber being in open communication with said annular passage, said inner chamber being rotatable independently of said outer chamber; c. gas introduction means extending into and adapted for discharge into said inner chamber through said second end of said inner chamber; and, d. means for rotating said outer chamber.
Claim 2
Dependent Claim
188 words
A rotary dryer comprising: a. an outer chamber adapted for rotation about its longitudinal axis, said chamber being adapted at a first end with a port adapted for the introduction of particulate matter and for the discharge of gases and being adapted at a second and opposite end for the discharge of particulate matter; b. an inner chamber unfixedly positioned within said outer chamber, and in spaced relationship therefrom to form an annular passageway therebetween, said inner chamber being supported on vanes positioned in spaced relationship and extending inwardly to said inner chamber from the inner wall of said outer chamber, said inner chamber being closed at a first end positioned proximate the first end of said outer chamber, said inner chamber being open at a second end positioned proximate said second end of said inner chamber, said inner chamber being in open communication with said annular passage, said inner chamber being rotatable independently of said outer chamber; c. gas introduction means extending into and adapted for discharge into said inner chamber through said second end of said inner chamber; and, d. means for rotating said outer chamber.
Claim 3
Dependent Claim
22 words
The apparatus of claim 1 in which said outer chamber is adapted with means for heating the outer surface of its wall.
Claim 4
Dependent Claim
37 words
The apparatus of claim 2 in which said means for heating comprises a combustion chamber adapted to produce hot gases, said chamber being adapted with conduit means for introduction of hot gases into said fluid introduction means.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 in which said fluid introduction means comprises a distribution spider.
Claim 6
Dependent Claim
30 words
The apparatus of claim 1 in which said outer chamber is adapted with means to restrict the movement of said inner chamber along the longitudinal axis of said outer chamber.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |