US3729180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated revolving drum
Assignee: SOC NAT DES GAS DU SUD QUEST PAU AND CO DES FOURS IND FR
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Filing: 1971-02-02
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Granted: 1973-04-24
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Expires: 1991-02-02
Abstract
Abstract The invention concerns an industrial drying appliance which may be used in the paper or textile industries, or to dry substances in suspension, such as muds. A revolving drum contains internal means of heating, consisting of at least one combustion chamber connected with sources supplying fuel and oxygen, and producing a flame in the combustion chamber, and at least one passage reaching from the central axis of the drum to the drum-wall, and opening into a pipe to remove fumes.
Inventors
- 👤 J Bourrel
- 👤 M Remond
- 👤 N Potie
- 👤 G Lagacherie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:53
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/18; F26B13/183; F26B13/186; D; D21; D21F; D21F5/00; D21F5/02; F26B3/00; F26B3/28; F26B3/30; F26B3/305; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
79 words
A revolving heated drum mounted for rotation on its own axis and supported for rotation on a pair of bearing members provided at opposite ends of said drum, means defining a stationary combustion chamber extending axially within said drum, stationary means defining an exhaust duct at one end of said drum, and means defining a tubular passage extending from said combustion chamber across the space between the axis of the drum and the drum wall to said exhaust passage.
Claim 2
Dependent Claim
79 words
A revolving heated drum mounted for rotation on its own axis and supported for rotation on a pair of bearing members provided at opposite ends of said drum, means defining a stationary combustion chamber extending axially within said drum, stationary means defining an exhaust duct at one end of said drum, and means defining a tubular passage extending from said combustion chamber across the space between the axis of the drum and the drum wall to said exhaust passage.
Claim 3
Dependent Claim
26 words
A heated drum in accordance with claim 1, in which at least part of said tubular passage runs at a uniform distance from the drum axis.
Claim 4
Dependent Claim
25 words
A heated drum in accordance with claim 2, in which the tubular passage is U-shaped, with the arms parallel to the axis of the drum.
Claim 5
Dependent Claim
24 words
A heated drum in accordance with claim 2, in which said tubular passage is spiral in shape, with the same axis as said drum.
Claim 6
Dependent Claim
25 words
A heated drum as claimed in claim 1 in which there are a plurality of said tubular passages placed at equal angles around the drum.
Claim 7
Dependent Claim
36 words
A heated drum as claimed in claim 5 containing two of said combustion chambers along the axis of the drum, one at each end of the drum and each connected to one of said tubular passages.
Claim 8
Dependent Claim
38 words
A heated drum in accordance with claim 5, in which said exhaust duct comprises an exhaust manifold positioned concentrically around the combustion chamber at one end of the drum, and connected to a plurality of said tubular passages.
Claim 9
Dependent Claim
41 words
A heated drum in accordance with claim 6 in which said tubular passages comprise two spiral pipes, with the same pitch mounTed around the drum axis, one being connected to each of said combustion chambers at the end of the drum.
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |