Patent US3867040A successfully refreshed from Google Patents.
US3867040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling the dyeing of textile materials
Assignee: Individual
•
Filing: 1973-07-25
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Granted: 1975-02-18
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Expires: 1993-07-25
Abstract
Abstract The absorption of dye from a dye liquor by a textile material is controlled by raising the temperature of the dye liquor while its light transparency remains constant, and maintaining the temperature of the dye liquor substantially constant while its light transparency changes as dye is absorbed by the material until the dye is at least substantially absorbed.
Inventors
- 👤 Oskar Loffler
- 👤 Rudolf Schlosser
- 👤 Gunther Dornheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:14
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/24; D06B23/28; G; G05; G05D; G05D21/00; G05D21/02; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
61 words
A method of controlling the absorption of dye from a dye liquor by a textile material, comprising raising the temperature of the dye liquor while its light transparency remains substantially constant, and maintaining the temperature of the dye liquor substantially constant while its light transparency changes as dye is absorbed by the material, until the dye is at least substantially absorbed.
Claim 2
Independent Claim
61 words
A method of controlling the absorption of dye from a dye liquor by a textile material, comprising raising the temperature of the dye liquor while its light transparency remains substantially constant, and maintaining the temperature of the dye liquor substantially constant while its light transparency changes as dye is absorbed by the material, until the dye is at least substantially absorbed.
Claim 3
Dependent Claim
45 words
The method of claim 1, wherein the dye liquor contains more than one component dye, and the temperature of the dye liquor is maintained substantially constant while each component dye is absorbed, and is thereafter increased until the next component dye starts to be absorbed.
Claim 4
Dependent Claim
97 words
Apparatus for controlling theabsorption of dye from a dye liquor by a textile material, comprising means for heating the dye liquor to a controlled temperature, means for measuring the light transparency of the dye liquor, and control means connected between the measuring means and the heating means for causing the heating means to raise the temperature of the dye liquor while its light transparency remains substantially constant, and to maintain the temperature of the dye liquor substantially constant while its light transparency changes as dye is absorbed by material, until the dye is at least substantially absorbed.
Claim 5
Dependent Claim
97 words
Apparatus for controlling theabsorption of dye from a dye liquor by a textile material, comprising means for heating the dye liquor to a controlled temperature, means for measuring the light transparency of the dye liquor, and control means connected between the measuring means and the heating means for causing the heating means to raise the temperature of the dye liquor while its light transparency remains substantially constant, and to maintain the temperature of the dye liquor substantially constant while its light transparency changes as dye is absorbed by material, until the dye is at least substantially absorbed.
Claim 6
Dependent Claim
26 words
The apparatus of claim 3, wherein the measuring means comprises a source of light and a light-sensitive element arranged on opposite sides of the dye liquor.
Claim 7
Dependent Claim
24 words
The apparatus of claim 3, wherein the control means comprises a servo loop producing an error signal, the error signal controlling the heating means.
Claim 8
Dependent Claim
21 words
The apparatus of claim 5, further comprising a bistable switch for controlling the heating means, the error signal operating the switch.
Claim 9
Dependent Claim
70 words
The apparatus of claim 5, wherein the servo loop comprises a first mechanical member movable in dependence upon the output of the measuring means, a second mechanical member, means for detecting relative displacement of the said members and providing the said error signal in response thereto, and means for moving the second member in response to the error signal in such a sense as to tend to reduce the displacement.
References Cited (Backward Citations)
FR2018134A7
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |