Patent US3738017A successfully refreshed from Google Patents.
US3738017A
Expired / Lapsed
US
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Yarn heating apparatus
Assignee: Heberlein and Co AG
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Filing: 1971-05-28
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Granted: 1973-06-12
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Expires: 1991-05-28
Abstract
Abstract Apparatus for continuous heating of linearly advancing textile yarns by means of a tube sealed at its ends in an enclosure containing a heated fluid medium, the tube having certain physical characteristics to provide a substantially constant wall temperature.
Inventors
- 👤 J Rascle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:20
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0481
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
Apparatus for heating continuously advancing textile yarns consisting at least partially of synthetic thermoplastic material by means of a tube sealed at its ends in an enclosure containing a heated fluid medium, through which tube the yarn passes in axial direction, characterized in that the tube walls consist of a material with a conductivity of at least 70 kcal / c T *C, that the interior diameter of the tube is not more than 4 mm and the tube wall thickness is at least 2.5 mm.
Claim 2
Dependent Claim
86 words
Apparatus for heating continuously advancing textile yarns consisting at least partially of synthetic thermoplastic material by means of a tube sealed at its ends in an enclosure containing a heated fluid medium, through which tube the yarn passes in axial direction, characterized in that the tube walls consist of a material with a conductivity of at least 70 kcal / c T *C, that the interior diameter of the tube is not more than 4 mm and the tube wall thickness is at least 2.5 mm.
Claim 3
Dependent Claim
15 words
Apparatus according to claim 1, characterized in that the tube walls are made of aluminum.
Claim 4
Dependent Claim
15 words
Apparatus according to claim 1, characterized in that the tube walls are made of copper.
Claim 5
Dependent Claim
15 words
Apparatus according to claim 1, characterized in that the tube walls are made of brass.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 1, characterized in that the interior tube diameter is 2.5 - 3.5 mm and the wall thickness is 3 - 5 mm.
Claim 7
Dependent Claim
19 words
Apparatus according to claim 1, characterized in that the outer faces of the tube is are provided with ribs.
Claim 8
Dependent Claim
47 words
A heating tube of the class described comprising an elongate body having walls consisting of a material with a conductivity of at least 70 kcal / d T *C, a wall thickness of at least 2.5 mm, and an interior diameter of not more than 4 mm.
Claim 9
Dependent Claim
47 words
A heating tube of the class described comprising an elongate body having walls consisting of a material with a conductivity of at least 70 kcal / d T *C, a wall thickness of at least 2.5 mm, and an interior diameter of not more than 4 mm.
Claim 10
Dependent Claim
16 words
A tube according to claim 7, characterized in that its outer surface is formed with ribs.
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |