Patent US4465912A successfully refreshed from Google Patents.
US4465912A
Expired / Lapsed
US
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Coiler-furnace combination
Assignee: Voestalpine AG
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Filing: 1982-07-12
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Granted: 1984-08-14
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Expires: 2002-07-12
Abstract
Abstract A coiler-furnace comprises a heat-shielding hood and a coiler having a coiler mandrel for coiling a hot-rolled strip. The mandrel incorporates an electrically energizable heating winding comprising a plurality of inductor coils for heating the coiler strip.
Inventors
- 👤 Franz Brettbacher
- 👤 Karl Moshammer
- 👤 Ernst Rom
- 👤 Franz Hirschmanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:37
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/68
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A coiler-furnace comprising a heat-shielding hood and a coiler having an expanding coiler mandrel comprising expanding segments and rotatably mounted in the heat-shielding hood for coiling a hot-rolled strip, the mandrel incorporating an electrically energizable heating winding carried by said expanding segments and comprising a plurality of inductor coils for heating the coiler strip.
Claim 2
Dependent Claim
54 words
A coiler-furnace comprising a heat-shielding hood and a coiler having an expanding coiler mandrel comprising expanding segments and rotatably mounted in the heat-shielding hood for coiling a hot-rolled strip, the mandrel incorporating an electrically energizable heating winding carried by said expanding segments and comprising a plurality of inductor coils for heating the coiler strip.
Claim 3
Dependent Claim
46 words
The improvement set forth in claim 1, wherein each of said expanding segments comprises a radially outer part, a radially inner part, and a heat-insulating layer between said outer and inner parts, and said heating winding is carried by said outer parts of said expanding segments.
Claim 4
Dependent Claim
28 words
The improvement set forth in claim 2, wherein said inner part of each of said expanding segments is formed with a flow passage for conducting a cooling fluid.
Claim 5
Dependent Claim
46 words
The improvement set forth in claim 2, wherein spacers are provided between said outer and inner parts of each of said expanding segments and tension screws are provided in each of said expanding segments to hold down the outer part thereof against the associated inner part.
Claim 6
Dependent Claim
70 words
The improvement set forth in claim 4, wherein the outer part of each of said expanding segments is divided into a plurality of length sections extending along the axis of said coiler mandrel and defining between them a circumferential joint and each of said length sections is secured to the inner part of the expanding segment by tension screws disposed near the center of the length of the length section.
Claim 7
Dependent Claim
24 words
The improvement set forth in claim 4, wherein said spacers are provided between the longitudinal edge portions of said sections and said inner part.
Claim 8
Dependent Claim
14 words
The improvement set forth in claim 4, wherein said spacers consist of ceramic material.
Claim 9
Dependent Claim
14 words
The improvement set forth in claim 2, wherein said outer parts are electrically conducting.
Claim 10
Dependent Claim
31 words
The coiler-furnace set forth in claim 1, wherein said coiler mandrel is formed with grooves lined with heat-insulating material and said heating winding comprises a hollow conductor extending in said grooves.
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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |