US3683648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coating a material length with a fluid coating substance
Assignee: Vepa AG
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Filing: 1969-11-14
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Granted: 1972-08-15
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Expires: 1989-11-14
Abstract
Abstract The present invention is directed to an apparatus for coating a material length with a fluid substance which comprises a coating trough containing the fluid coating substance, a roller means rotatably mounted and adapted to be partially immersed in said fluid coating substance, the surface of the roller means and the edge of the trough defining an aperture for the dispensing of the fluid coating substance, said edge of the trough being provided with a liquid guiding element which extends in the downward direction from said edge and means for conveying the material length to be coated in close proximity to said liquor guiding element.
Inventors
- 👤 Hans Fleissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:35
CPC Classifications
D; D06; D06B; D06B1/00; D06B1/04; D06B1/06; D06B17/00; D06B17/06
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
122 words
An apparatus for coating a material length with a liquid substance which comprises a coating trough containing the liquid coating substance, a roller means rotatably mounted and adapted to be partially immersed in said liquid coating substance, the surface of the roller means and an edge of the trough defining a slit for the dispensing of the liquid coating substance, said edge of the trough being closely adjacent to the liquid level in said trough and being provided with a liquid guiding element which extends in the downward direction from said edge, and said immersed portion of the roller means rotating toward said edge, and means for conveying the material length to be coated in close proximity to said liquid guiding element.
Claim 2
Independent Claim
122 words
An apparatus for coating a material length with a liquid substance which comprises a coating trough containing the liquid coating substance, a roller means rotatably mounted and adapted to be partially immersed in said liquid coating substance, the surface of the roller means and an edge of the trough defining a slit for the dispensing of the liquid coating substance, said edge of the trough being closely adjacent to the liquid level in said trough and being provided with a liquid guiding element which extends in the downward direction from said edge, and said immersed portion of the roller means rotating toward said edge, and means for conveying the material length to be coated in close proximity to said liquid guiding element.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1 wherein a stripping element is associated with the surface of the roller means above the edge of the trough.
Claim 4
Dependent Claim
33 words
The apparatus of claim 2 wherein the stripping element is a stripping blade which is spring mounted, said stripping blade being forced against the roller means by the spring action of said spring.
Claim 5
Dependent Claim
18 words
The apparatus of claim 1 wherein means are provided for adjusting the roller means in the coating trough.
Claim 6
Dependent Claim
18 words
The apparatus of claim 1 wherein means are provided for driving the roller means at a variable speed.
Claim 7
Dependent Claim
31 words
The apparatus of claim 1 wherein said conveying means includes second roller means for conveying the material length to be coated below the liquid guiding element and in close proximity thereto.
Claim 8
Dependent Claim
21 words
The apparatus of claim 6 wherein a third roller means cooperates with the second roller means for conveying the material length.
Claim 9
Dependent Claim
40 words
The apparatus of claim 6 wherein before the material length reaches the second roller means, a steaming means is disposed for directing steam against the surface of the material length which is not to be coated with the liquor substance.
Claim 10
Dependent Claim
14 words
The apparatus of claim 8 wherein the steaming means is a steam spray pipe.
Claim 11
Dependent Claim
13 words
The apparatus of claim 8 wherein the steaming means is a steam box.
Claim 12
Dependent Claim
42 words
The apparatus of claim 1 wherein the slit between the surface of the roller means and the edge of the coating trough is provided with a covering means which is adjustable depending upon the working width of the material length being treated.
Claim 13
Dependent Claim
32 words
The apparatus of claim 11 wherein the cover means includes limiting bars provided on said guiding element which can be adjusted according to the working width of the material length being treated.
Claim 14
Dependent Claim
53 words
The apparatus of claim 1 wherein a filling trough is provided in front of the coating trough as an independent unit, said filling trough being provided with an overflow edge which is situated above the liquid level in the coating trough and means for filling the filling trough with the liquid coating substance.
Claim 15
Dependent Claim
21 words
The apparatus of claim 13 wherein the filling trough is created by dividing the coating trough with an intermediate partition means.
Claim 16
Dependent Claim
35 words
The apparatus of claim 13 wherein the overflow edge is provided by a wall defining said filling trough, said edge being canted at an acute angle towards said wall and extending into the coating liquid.
Claim 17
Dependent Claim
31 words
The apparatus of claim 13 wherein said filling trough and said coating trough are separated from each other by a common wall, said common wall being provided with said overflow edge.
Claim 18
Dependent Claim
25 words
The apparatus of claim 16 wherein the overflow edge is canted at an acute angle towards the common wall and extends into the coating liquid.
Claim 19
Dependent Claim
65 words
The apparatus of claim 17 wherein a partition means is disposed between the common wall and the surface of the roller means, said partition means being canted in a similar manner as the overflow edge of the common wall, the upper edge of said partition extending above the liquid level and the lower edge extending at a distance from the bottom of the coating trough.
Claim 20
Dependent Claim
39 words
The apparatus of claim 13 wherein pump means is provided for filling the filling trough, the speed of the coating roller and the amount of liquid substance being pumped depending on the speed of the material length being coated.
Claim 21
Dependent Claim
47 words
The apparatus of claim 19 wherein an electrical scanning means associated with the fluid substance in the coating trough is operatively associated with the coating roller, the conveying means for the material length and the pump means, for maintaining a constant liquid level in the coating trough.
Claim 22
Dependent Claim
44 words
The apparatus of claim 20 wherein tachometer generator means are provided for measuring the speed of the conveying means, the generated voltage controlling a drive means for the pump means and a drive means for the coating roller through control means and thyristor means.
Claim 23
Dependent Claim
32 words
The apparatus of claim 21 wherein an inductive flowmeter is associated with the pump means, the generated voltage of said flowmeter controlling the drive for the pump means through a control means.
Claim 24
Dependent Claim
35 words
The apparatus of claim 20 wherein the electrical scanning means is an inductive indicator, the induced voltage of said indicator varying the speed of the coating roller through an amplifying means and a control means.
Claim 25
Dependent Claim
34 words
The apparatus of claim 20 wherein a potentiometer is provided for varying the quantity of the liquid substance per square meter of material length, said potentiometer varying the nominal voltage for certain conveying speeds.
Claim 26
Dependent Claim
53 words
The apparatus of claim 13 wherein the filling trough is subdivided by an intermediate partition into two zones, one zone being closer to said coating trough than the other, said intermediate partition being provided with an overflow edge which is situated above the liquid level in the zone closer to the coating trough.
Claim 27
Dependent Claim
18 words
The apparatus of claim 25 wherein the filling means communicates with that zone farther from the coating trough.
Claim 28
Dependent Claim
47 words
The apparatus of claim 25 wherein the two zones of the filling trough are disposed above the subsequently disposed coating trough and said filling trough has an overflow edge between the filling trough and the coating trough that extends into the coating substance in the coating trough.
Claim 29
Dependent Claim
35 words
The apparatus of claim 25 wherein the overflow edge is provided by a wall defining said filling trough, said edge being canted at an acute angle towards said wall and extending into the coating liquid.
Claim 30
Dependent Claim
23 words
The apparatus of claim 1 wherein the material length is a tufted carpet material and the liquid coating substance is a dyeing liquor.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |