Patent US3593556A successfully refreshed from Google Patents.
US3593556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling mill with prestressed housing
Assignee: Institut de Recherches de la Siderurgie Francaise IRSID
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Filing: 1969-04-14
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Granted: 1971-07-20
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Expires: 1989-04-14
Abstract
Abstract In a four-high mill, the two working rolls have bearing surfaces in rolling contact with each other. Pressure is exerted upon the two mating backup rolls and transmitted to the bearing surfaces along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined therebetween to permit the product to pass therethrough.
Inventors
- 👤 Paul Blain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:30
CPC Classifications
B; B21; B21B; B21B13/00; B21B13/14; B21B27/00; B21B27/02; B21B31/00; B21B31/02; B21B31/028; B21B31/16; B21B1/00; B21B1/16; B21B1/18; B21B1/22; B21B27/021; B21B2027/022; B21B2203/00; B21B2203/36; B21B2269/00; B21B2269/12; B21B2269/14; B21B27/03
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
184 words
A four-high rolling mill comprising 1. two cooperating working roll, a. each working roll having at each end a bearing surface in rolling contact with the corresponding end bearing surface on the other roll; 2. two backup rolls, each of the backup rolls being in pressure contact with a respective one of the working rolls along the entire length of the working rolls and each backup roll having a diameter at each point along its length such that the backup roll mates along the entire length with the working roll in pressure contact therewith; 3. means for exerting upon the ends of the backup rolls a pressure force superior to, and opposing, the rolling pressure exerted upon the working rolls by a product passing therebetween during rolling; b. the pressure force being transmitted by the backup rolls to the working rolls through their end bearing surfaces and along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined between the working rolls to permit the product to pass therethrough.
Claim 2
Dependent Claim
184 words
A four-high rolling mill comprising 1. two cooperating working roll, a. each working roll having at each end a bearing surface in rolling contact with the corresponding end bearing surface on the other roll; 2. two backup rolls, each of the backup rolls being in pressure contact with a respective one of the working rolls along the entire length of the working rolls and each backup roll having a diameter at each point along its length such that the backup roll mates along the entire length with the working roll in pressure contact therewith; 3. means for exerting upon the ends of the backup rolls a pressure force superior to, and opposing, the rolling pressure exerted upon the working rolls by a product passing therebetween during rolling; b. the pressure force being transmitted by the backup rolls to the working rolls through their end bearing surfaces and along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined between the working rolls to permit the product to pass therethrough.
Claim 3
Dependent Claim
59 words
two backup rolls, each of the backup rolls being in pressure contact with a respective one of the working rolls along the entire length of the working rolls and each backup roll having a diameter at each point along its length such that the backup roll mates along the entire length with the working roll in pressure contact therewith;
Claim 4
Dependent Claim
59 words
two backup rolls, each of the backup rolls being in pressure contact with a respective one of the working rolls along the entire length of the working rolls and each backup roll having a diameter at each point along its length such that the backup roll mates along the entire length with the working roll in pressure contact therewith;
Claim 5
Dependent Claim
135 words
two backup rolls, each of the backup rolls being in pressure contact with a respective one of the working rolls along the entire length of the working roll and each backup roll having a diameter at each point along its length such that the backup roll mates along the entire length with the working roll in pressure contact therewith, a. each backup roll having a central portion defined by a rectilinear generatrix and conical end portions of a median diameter about the same as the diameter of the central portion, one of the conical end portions of each backup roll converging and the other conical end portion diverging in respect of the central portion of the backup roll, and b. the two backup rolls being arranged in wedged engagement with the respective working rolls; and
Claim 6
Dependent Claim
135 words
two backup rolls, each of the backup rolls being in pressure contact with a respective one of the working rolls along the entire length of the working roll and each backup roll having a diameter at each point along its length such that the backup roll mates along the entire length with the working roll in pressure contact therewith, a. each backup roll having a central portion defined by a rectilinear generatrix and conical end portions of a median diameter about the same as the diameter of the central portion, one of the conical end portions of each backup roll converging and the other conical end portion diverging in respect of the central portion of the backup roll, and b. the two backup rolls being arranged in wedged engagement with the respective working rolls; and
Claim 7
Dependent Claim
5 words
A four-high rolling mill comprising
Claim 8
Dependent Claim
5 words
A four-high rolling mill comprising
Claim 9
Dependent Claim
106 words
two backup rolls, each of the backup rolls being in pressure contact with a respective one of the working rolls along the entire length of the working roll and each backup roll having a diameter at each point along its length such that the backup roll mates along the entire length with the working roll in pressure contact therewith, a. the backup roll in pressure contact with the one working roll having end bearing surfaces in rolling contact with the end bearing surfaces of the one working roll whose diameters are smaller than the diameter of the central portion of the backup roll extending therebetween; and
Claim 10
Dependent Claim
106 words
two backup rolls, each of the backup rolls being in pressure contact with a respective one of the working rolls along the entire length of the working roll and each backup roll having a diameter at each point along its length such that the backup roll mates along the entire length with the working roll in pressure contact therewith, a. the backup roll in pressure contact with the one working roll having end bearing surfaces in rolling contact with the end bearing surfaces of the one working roll whose diameters are smaller than the diameter of the central portion of the backup roll extending therebetween; and
Claim 11
Dependent Claim
89 words
means for exerting upon the ends of the backup rolls a pressure force superior to, and opposing, the rolling pressure exerted upon the working rolls by a product passing therebetween during rolling, b. the pressure force being transmitted by the backup rolls to the working rolls through their end bearing surfaces and along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined between the working rolls to permit the product to pass therethrough.
Claim 12
Dependent Claim
89 words
means for exerting upon the ends of the backup rolls a pressure force superior to, and opposing, the rolling pressure exerted upon the working rolls by a product passing therebetween during rolling, b. the pressure force being transmitted by the backup rolls to the working rolls through their end bearing surfaces and along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined between the working rolls to permit the product to pass therethrough.
Claim 13
Dependent Claim
70 words
The rolling mill of claim 1, wherein each working roll has additional bearing surfaces intermediate the end bearing surfaces in rolling contact with corresponding bearing surfaces on the other working roll, concave rolling portions being defined between said additional bearing surfaces to permit elongated products to pass therethrough, and the backup rolls having corresponding bearing surfaces respectively mating with the bearing surfaces and concave rolling portions of the working rolls.
Claim 14
Dependent Claim
89 words
means for exerting upon the ends of the backup rolls a pressure force superior to, and opposing, the rolling pressure exerted upon the working rolls by a product passing therebetween during rolling, a. the pressure force being transmitted by the backup rolls to the working rolls through their end bearing surfaces and along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined between the working rolls to permit the product to pass therethrough.
Claim 15
Dependent Claim
89 words
means for exerting upon the ends of the backup rolls a pressure force superior to, and opposing, the rolling pressure exerted upon the working rolls by a product passing therebetween during rolling, a. the pressure force being transmitted by the backup rolls to the working rolls through their end bearing surfaces and along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined between the working rolls to permit the product to pass therethrough.
Claim 16
Dependent Claim
89 words
means for exerting upon the ends of the backup rolls a pressure force superior to, and opposing, the rolling pressure exerted upon the working rolls by a product passing therebetween during rolling; b. the pressure force being transmitted by the backup rolls to the working rolls through their end bearing surfaces and along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined between the working rolls to permit the product to pass therethrough.
Claim 17
Dependent Claim
89 words
means for exerting upon the ends of the backup rolls a pressure force superior to, and opposing, the rolling pressure exerted upon the working rolls by a product passing therebetween during rolling; b. the pressure force being transmitted by the backup rolls to the working rolls through their end bearing surfaces and along their entire length whereby the bearing surfaces of the working rolls are held in pressure engagement with each other while a rolling space is defined between the working rolls to permit the product to pass therethrough.
Claim 18
Dependent Claim
5 words
A four-high rolling mill comprising
Claim 19
Dependent Claim
5 words
A four-high rolling mill comprising
Claim 20
Dependent Claim
20 words
The rolling mill of claim 4, further comprising means for axially displacing the working rolls in respect of each other.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |