US3920065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curved roll rack
Assignee: United States Steel Corp
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Filing: 1973-08-27
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Granted: 1975-11-18
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Expires: 1993-08-27
Abstract
Abstract A curved roll-rack for a continuous-casting apparatus. The rack is formed of a plurality of standardized frame sections and base members which serve both as supports for the sections and as housings for driven roll stands. The frame sections support clusters of bottom and top idler rolls. The support means for the idler rolls enable these rolls to be removed and replaced readily. When the idler rolls are replaced after removal, they are automatically properly positioned.
Inventors
- 👤 John T Hall
- 👤 Jr George J Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:59
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/12; B22D11/128; B22D11/1282
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
167 words
In a curved roll-rack which includes arcuate frame sections each having a concave edge, means supporting said frame sections, bottom and top idler rolls, and means on said frame sections supporting said rolls, whereby the rolls define a curved path through which a workpiece may travel, the improvement in which the supporting means for said rolls include: pads fixed to said frame sections along the concave edges thereof; opposed support members of inverted T-shape having cross bars fixed to said pads and uprights which form rails and extend radially from said concave edges toward the center of curvature of the frame sections; bearings in which said rolls are journaled; bottom and top chocks in which said bearings are mounted; said chocks being slidably supported on said rails outside the concave edges of said frame sections; and means holding said chocks on said rails; said chocks being removable from said rails without disturbing said members; whereby the rolls automatically drop into their proper positions when replaced after removal.
Claim 2
Dependent Claim
167 words
In a curved roll-rack which includes arcuate frame sections each having a concave edge, means supporting said frame sections, bottom and top idler rolls, and means on said frame sections supporting said rolls, whereby the rolls define a curved path through which a workpiece may travel, the improvement in which the supporting means for said rolls include: pads fixed to said frame sections along the concave edges thereof; opposed support members of inverted T-shape having cross bars fixed to said pads and uprights which form rails and extend radially from said concave edges toward the center of curvature of the frame sections; bearings in which said rolls are journaled; bottom and top chocks in which said bearings are mounted; said chocks being slidably supported on said rails outside the concave edges of said frame sections; and means holding said chocks on said rails; said chocks being removable from said rails without disturbing said members; whereby the rolls automatically drop into their proper positions when replaced after removal.
Claim 3
Dependent Claim
64 words
An improvement as defined in claim 1 in which said rolls are arranged in clusters of two bottom rolls and their bearings, and two top rolls and their bearings, the bearings of a cluster of bottom rolls are mounted in an opposed pair of bottom chocks, and the bearings of a cluster of top rolls are mounted in an opposed pair of top chocks.
Claim 4
Dependent Claim
25 words
An improvement as defined in claim 2 further comprising bottom and top spacer bars attached to said bottom and top chocks respectively and extending therebetween.
Claim 5
Dependent Claim
32 words
An improvement as defined in claim 3 further comprising knobs fixed to the exterior of said members, said top spacer bars having windows through which said top rolls are accessible for extraction.
Claim 6
Dependent Claim
120 words
An improvement as defined in claim 1 in which said rolls are arranged in clusters of two bottom rolls and their bearings, and two top rolls and their bearings, the bearings of a cluster of bottom rolls are mounted in an opposed pair of bottom chocks, and the bearings of a cluster of top rolls are mounted in an opposed pair of top chocks, and further comprising a bottom spacer bar attached to the undersides of said bottom chocks and extending therebetween, a top spacer bar attached to the upper faces of said top chocks and extending therebetween, and uprights on said bottom chocks on which said top chocks rest, said bottom and top chocks having grooves receiving said rails.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |