Patent US3594918A successfully refreshed from Google Patents.
US3594918A
Expired / Lapsed
US
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Apparatus for treating fibrous material
Assignee: Wilh Quester Maschinenfabrik GmbH
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Filing: 1968-12-18
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Granted: 1971-07-27
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Expires: 1988-12-18
Abstract
Abstract This disclosure provides an apparatus for drying fibrous materials such as tobacco. The fibrous material being treated is moved in an axial direction through a drum wherein treating medium is passed through the material in a substantially transverse or radial direction with respect to the drum. The treatment medium may be air used in a drying operation or other types of treating fluids used in operations such as remoisturizing or impregnating. Various auxiliary devices may be used to control the atmospheric conditions within the drum and the treatment medium which is passed transversely through the charge of fibrous material moving through the drum in an axial direction.
Inventors
- 👤 Wilhelm Quester
- 👤 Carl Steinmetz
- 👤 Josef Clemens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:12
CPC Classifications
F; F26; F26B; F26B11/00; F26B11/18; F26B11/181; F26B11/182; A; A24; A24B; A24B3/00; A24B3/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
30 words
An apparatus as defined in claim 1 wherein said neutral area structural means comprises a nonperforated section along said drum means between said circulation assemblies having said different treatment atmospheres.
Claim 2
Dependent Claim
38 words
An apparatus as defined in claim 1 wherein said drum means comprises an assembly of at least two drums located end to end with respect to each other to cause the fibrous material to move through successive drums.
Claim 3
Dependent Claim
25 words
An apparatus as dEfined in claim 3 wherein said successive drums have respectively larger diameters from one end of the drum assembly to the other.
Claim 4
Dependent Claim
21 words
An apparatus as defined in claim 4 wherein said apparatus assembly includes means to drive each drum at an independent speed.
Claim 5
Dependent Claim
22 words
An apparatus as defined in claim 4 wherein said driving means includes means to drive two successive drums in two different directions.
Claim 6
Dependent Claim
22 words
An apparatus as defined in claim 4 wherein said apparatus assembly includes means for producing a suction effect within said drum assembly.
Claim 7
Independent Claim
232 words
An apparatus for treating fibrous material such as tobacco with a fluid treatment medium comprising: a. a drum means rotatably mounted within a casing and having perforations along the outer circumference thereof, b. said casing includes a jacket structure surrounding the drum means, an input hood mounted at one end of the drum means and an output hood mounted at the other end of the drum means, c. said input hood includes adjustable valves to control the atmosphere within each said circulation assembly, d. means for driving the drum means, e. means located on the inside surface of the drum means to cause the fibrous material to move in an axial direction through the rotating drum means, and f. at least two fluid medium circulation assemblies located adjacent each other along the length of the drum means, g. each circulation assembly having an inlet and outlet means for fluid treatment medium flow, fan means for effecting flow, heat exchange means to regulate the temperature of the fluid treatment medium and means to independently control the fan means and a heat exchange means within each said assembly, h. said inlet and outlet means comprises a pair of nozzles located in said jacket structure, i. said fluid treatment medium flow through the drum means from the inlet to outlet means being in a radial direction with respect to the axis of the drum means.
Claim 8
Dependent Claim
38 words
An apparatus as defined in claim 8 wherein said fan means is located outside the drum between the inlet and outlet means and said heat exchange means is mounted within the casing between the inlet and outlet means.
Claim 9
Dependent Claim
25 words
An apparatus as defined in claim 8 wherein said control means includes means to reverse the direction of fluid medium flow within each said assembly.
Claim 10
Dependent Claim
56 words
An apparatus as defined in claim 8 wherein said casing includes an exhaust channel branch to direct exhaust fluid medium to the surrounding atmosphere, said channel branch includes a second fan means to draw the exhaust fluid medium out of the circulation assembly and valve means to adjust the cross-sectional area within the exhaust branch channel.
Claim 11
Dependent Claim
65 words
An apparatus as defined in claim 8 wherein said circulation assembly includes a filter means located between the outlet nozzle and the heat exchange means to capture solid particles of fibrous material entrained in said fluid treatment medium after the medium has passed through said rotating drum means, said heat exchange means comprises a member disposed at an oblique position with respect to the horizontal.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |