Patent US3763923A successfully refreshed from Google Patents.
US3763923A
Expired / Lapsed
US
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Extractor for withdrawing or inserting roll-clusters
Assignee: United States Steel Corp
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Filing: 1972-03-22
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Granted: 1973-10-09
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Expires: 1992-03-22
Abstract
Abstract An extractor for withdrawing or inserting roll-clusters of the curved roll rack of a continuous-casting machine. The extractor includes a main frame pivotally supported on a horizontal axis at the concave side of the rack. A carriage and drive means therefor are supported on the main frame. The carriage has means for engaging and supporting a roll cluster. The underside of the frame carries a mechanism for aligning the carriage with a cluster above.
Inventors
- 👤 F Gallucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:32
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/12; B22D11/128; B22D11/1285; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/5383
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
134 words
The combination, with a curved roll-rack which includes a housing and a plurality of roll-clusters fixed in said housing and adapted to be withdrawn or inserted at the concave side of said roll-rack, of an extractor for withdrawing or inserting said roll-clusters, said extractor comprising: a main frame pivotally supported at its back end on a horizontal axis spaced from said roll-rack at the concave side thereof; means connected with said main frame for raising and lowering it about its pivotal support to align the extractor with a selected cluster in said housing; a carriage; means supporting said carriage on said main frame for movement toward and away from said housing; drive means operatively connected with said carriage; and means carried by the front end of said carriage for engaging and supporting a roll-cluster.
Claim 2
Dependent Claim
134 words
The combination, with a curved roll-rack which includes a housing and a plurality of roll-clusters fixed in said housing and adapted to be withdrawn or inserted at the concave side of said roll-rack, of an extractor for withdrawing or inserting said roll-clusters, said extractor comprising: a main frame pivotally supported at its back end on a horizontal axis spaced from said roll-rack at the concave side thereof; means connected with said main frame for raising and lowering it about its pivotal support to align the extractor with a selected cluster in said housing; a carriage; means supporting said carriage on said main frame for movement toward and away from said housing; drive means operatively connected with said carriage; and means carried by the front end of said carriage for engaging and supporting a roll-cluster.
Claim 3
Dependent Claim
29 words
A combination as defined in claim 1 in which said roll-rack defines a path lying in a circular arc, and said axis coincides with the center of the arc.
Claim 4
Dependent Claim
103 words
A combination as defined in claim 1 in which said extractor comprises in addition a carriage-supporting frame pivotally mounted at its front end on said main frame, and means at the back end of said main frame supporting the back end of said carriage-supporting frame for tilting adjustments with respect to said main frame, said carriage and said drive means being mounted on said carriage-supporting frame, said combination including a bending-roll unit above said curved roll-rack, the means on said carriage for engaging and supporting a roll-cluster being cooperable with said roll-clusters in said bending-roll unit on tilting adjustment of said carriage-supporting frame.
Claim 5
Dependent Claim
18 words
A combination as defined in claim 1 in which said carriage is mounted directly on said main frame.
Claim 6
Dependent Claim
51 words
A combination as defined in claim 1 in which said carriage includes a rigid frame, rollers supporting said rigid frame, and a ram extending from the front end of said rigid frame toward said roll-rack, and in which the means for engaging and supporting a roll-cluster is mounted on said ram.
Claim 7
Dependent Claim
51 words
A combination as defined in claim 5 in which said clusters have apertured lugs, and the means for engaging and supporting a roll-cluster includes opposed double-acting fluid-pressure cylinders mounted on the front end of said ram, and transversely reciprocable pins operated by said cylinders, said pins being receivable in said lugs.
Claim 8
Dependent Claim
62 words
A combination as defined in claim 5 in which there are top and bottom roll-clusters and said top clusters include slidable keys fixing the top clusters in said housing, and said top and bottom clusters have apertured lugs, and the means for engaging and supporting a roll-cluster includes key-operating mechanism engageable with said keys, and transversely reciprocable pins receivable in said lugs.
Claim 9
Dependent Claim
44 words
A combination as defined in claim 7 in which said key-operating mechanism includes opposed double-acting fluid-pressure cylinders mounted on said ram, and transversely slidable fixtures mounted on said ram and operatively connected with said cylinders, said keys and fixtures having cooperable pins and sockets.
Claim 10
Dependent Claim
46 words
A combination as defined in claim 1 in which said extractor comprises in addition aligning mechanism mounted on the underside of one of said frames and engageable with a cluster below the cluster to be withdrawn for aligning said carriage with the cluster to be withdrawn.
Claim 11
Dependent Claim
38 words
A combination as defined in claim 9 in which said aligning mechanism includes bell-cranks pivoted to the frame on vertical axes, fingers pivoted to said bell-cranks, and motive means operatively connected to said bell-cranks and to said fingers.
Claim 12
Dependent Claim
58 words
A combination as defined in claim 1 in which the rolls in said roll-clusters are idler rolls, and said roll-rack includes driven rolls and frames in which said driven rolls are mounted, said driven rolls being interspersed with said clusters, the means for engaging and supporting a roll-cluster also being engageable with the frames for said driven rolls.
Claim 13
Dependent Claim
21 words
A combination as defined in claim 11 including apertured lugs carried by the frames in which said driven rolls are mounted.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |