US4241692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating drum
Assignee: Neerlandaise de Azote Cie SA
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Filing: 1978-04-20
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Granted: 1980-12-30
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Expires: 1998-04-20
Abstract
Abstract An apparatus for coating pellets, such as prills, granules and the like, with a liquid coating agent, which comprises a cylindrical, obliquely disposed drum arranged for rotation about its longitudinal axis, said drum comprising means at or adjacent its higher end for the supply and input of pellets to be coated and for supplying and spraying or atomizing said liquid coating agent over the pellets introduced, and means at or adjacent its lower end for the output and discharge of coated product pellets, and further is provided with partitions arranged transversely to the axis of rotation and dividing the drum into compartments, each of said partitions having a passage opening located eccentrically relative to the axis of rotation and so that the passage openings in each pair of partitions defining a compartment are peripherally offset relatively to each other.
Inventors
- 👤 Willy H. P. Van Hijfte
- 👤 Rafael A. J. Goethals
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:32
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/006; B01F; B01F29/00; B01F29/25; B01F29/60; B01F29/61; B01F33/00; B01F33/80; B01F33/836; B01F33/8363
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
An apparatus for coating pellets, such as prills, granules and the like, with a liquid coating agent, which comprises a cylindrical, obliquely disposed drum arranged for rotation about its longitudinal axis, said drum comprising means at or adjacent its higher end for the supply and input of pellets to be coated and for supplying and spraying or atomizing said liquid coating agent over the pellets introduced, and means at or adjacent its lower end for the output and discharge of coated product pellets, said apparatus being characterized by partitions arranged transversely to the axis of rotation and dividing the drum into compartments, each of said partitions having a passage opening located eccentrically relative to the axis of rotation and so that the passage openings in each pair of partitions defining a compartment are peripherally offset relatively to each other.
Claim 2
Independent Claim
139 words
An apparatus for coating pellets, such as prills, granules and the like, with a liquid coating agent, which comprises a cylindrical, obliquely disposed drum arranged for rotation about its longitudinal axis, said drum comprising means at or adjacent its higher end for the supply and input of pellets to be coated and for supplying and spraying or atomizing said liquid coating agent over the pellets introduced, and means at or adjacent its lower end for the output and discharge of coated product pellets, said apparatus being characterized by partitions arranged transversely to the axis of rotation and dividing the drum into compartments, each of said partitions having a passage opening located eccentrically relative to the axis of rotation and so that the passage openings in each pair of partitions defining a compartment are peripherally offset relatively to each other.
Claim 3
Dependent Claim
24 words
Apparatus according to claim 1, wherein the passage openings in the partitions are formed so as to adjoin the inner wall of the drum.
Claim 4
Dependent Claim
22 words
Apparatus according to claim 1, wherein the passage openings in each pair of directly succeeding partitions are peripherally offset through approximately 180°.
Claim 5
Dependent Claim
33 words
Apparatus according to claim 1, wherein each passage opening has a width in the radial direction relative to the axis of rotation which is less than half the interior diameter of the drum.
Claim 6
Dependent Claim
32 words
Apparatus according to claim 1, wherein all passage openings have substantially equal surface area, which surface area is more than 2% but less than 25%, of the cross-sectional area of the drum.
Claim 7
Dependent Claim
23 words
Apparatus according to claim 1, wherein the perpendicular distance between two directly succeeding partitions does not exceed the interior diameter of the drum.
References Cited (Backward Citations)
US513925A
Cited
US1296445A
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US2127137A
Cited
US2213056A
Cited
US2309970A
Cited
FR1033727A
Cited
US3588052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |