US3665734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for finishing fibrous material
Assignee: Boehler & Weber Kg-Maschinenfabrik-Augsburg
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Filing: 1969-09-15
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Granted: 1972-05-30
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Expires: 1989-09-15
Abstract
Abstract Fibrous material in web or filament form, to be dyed or otherwise chemically treated, is successively passed through a plurality of chambers including a treatment chamber in which it is subjected to the spray of a fluid, a drying chamber which may be subdivided into several compartments, and an intervening reaction chamber in which a controlled amount of moisture is added and which may be preceded by a preconditioning chamber provided with temperature-control means. Air is forcibly circulated, with the aid of a primary blower, from a location near the inlet end of the treatment chamber to a point of the drying chamber remote from the treatment chamber whereby this air passes through the interconnected chambers in counter-current to the treated material. Each chamber may also be provided with an individual secondary air path containing a blower for generating a flow which passes only through that chamber in counterflow to the treated material.
Inventors
- 👤 Paul Hauser
- 👤 Walter Pfister
- 👤 Hans Ulrich Stucki
- 👤 Heinz Teuwen
- 👤 Heinrich Fuhring
- 👤 Johannes Helmut Sieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:21
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/922; D06P1/924; D06B; D06B21/00; D06B9/00; D06B9/02; D06M; D06M23/00; D06M23/10; D06P1/44
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
38 words
Apparatus as defined in claim 1 wherein said drying chamber is subdivided into a first compartment close to said treatment chamber and at least one further compartment beyond said first compartment, said path terminating at said further compartment.
Claim 2
Dependent Claim
43 words
Apparatus as defined in claim 2 wherein said drying chamber includes a final compartment beyond said further compartment, said final compartment being provided with additional blower means for recirculating air in a secondary path from a discharge side to an entrance side thereof.
Claim 3
Dependent Claim
35 words
Apparatus as defined in claim 3 wherein said guide means directs said material vertically downwardly through said final compartment, said secondary path starting at the bottom and ending at the top of said final compartment.
Claim 4
Dependent Claim
14 words
Apparatus as defined in claim 3, further including solvent-recovery means in said secondary path.
Claim 5
Dependent Claim
19 words
Apparatus as defined in claim 1, further comprising cooling means disposed in said path downstream of said blower means.
Claim 6
Dependent Claim
61 words
Apparatus as defined in claim 1 wherein said treatment chamber is provided with further conduit means forming a secondary air path from a point of said treatment chamber near said inlet to a point thereof proximal to said drying chamber, said supply means being disposed between said points, said secondary air path including additional blower means for circulating vapor-laden air therethrough.
Claim 7
Dependent Claim
25 words
Apparatus as defined in claim 7 wherein said further conduit means is provided with hygroscopically controlled means for admitting moisture into said secondary air path.
Claim 8
Dependent Claim
21 words
Apparatus as defined in claim 7 wherein said secondary air path further includes heating means downstream of said additional blower means.
Claim 9
Dependent Claim
56 words
Apparatus as defined in claim 7 wherein said supply means comprises two sets of jets on opposite sides of the line of travel of said material through said treatment chamber, said forced-circulation path and said secondary air path having intake ports located in said treatment chamber at said opposite sides ahead of said sets of jets.
Claim 10
Dependent Claim
27 words
Apparatus as defined in claim 10 wherein said secondary air path has discharge ports entering said treatment chamber at said opposite sides beyond said sets of jets.
Claim 11
Dependent Claim
28 words
Apparatus as defined in claim 1 wherein said chambers include a reaction chamber between said treatment and drying chambers and a source of moisture for said reaction chamber.
Claim 12
Dependent Claim
58 words
Apparatus as defined in claim 12 wherein said source includes an air duct communiCating with said reaction chamber at an entrance side and an exit side for said material and further blower means in said air duct for circulating air therethrough from said entrance side to said exit side, said duct having an inlet connection for aqueous fluid.
Claim 13
Dependent Claim
23 words
Apparatus as defined in claim 13, further comprising hygroscopically controlled means in said duct for regulating the moisture content of said reaction chamber.
Claim 14
Dependent Claim
23 words
Apparatus as defined in claim 13 wherein said chambers include a preconditioning chamber, immediately ahead of said reaction chamber, provided with temperature-control means.
Claim 15
Dependent Claim
26 words
Apparatus as defined in claim 15 wherein said guide means includes a pair of squeeze rollers engaging said material at an end of said preconditioning chamber.
Claim 16
Dependent Claim
41 words
Apparatus as defined in claim 1 wherein said chambers extend vertically in said housing, said guide means comprising a top deflector and a bottom deflector in each chamber engaging said material for vertical motion in otherwise unsupported manner between said deflectors.
Claim 17
Dependent Claim
48 words
Apparatus as defined in claim 17 wherein at least one of said chambers is provided with an individual duct, communicating therewith at the top and the bottom, and with additional blower means in said duct for circulating air therethrough and through the chamber in counterflow to said material.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |