Patent US5154807A successfully refreshed from Google Patents.
Patent US3709286A successfully refreshed from Google Patents.
US3709286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous-casting mold with thin-walled copper liner
Assignee: AG Industries Inc Pennsylvania
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Filing: 1970-11-02
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Granted: 1973-01-09
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Expires: 1990-11-02
Abstract
Abstract A continuous-casting mold in which the steel backing plates are fastened to the copper liner with studs welded to the liner. The welded construction enables a thinner-walled liner to be used and affords better resistance against heat distortion and thermal stresses. The studs may be welded directly to the liner or to stainless steel strips which in turn are welded to the liner.
Inventors
- 👤 J Bower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:51
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/055
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
In a continuous-casting mold which includes a relatively thin-walled copper liner of a thickness of about 3/8 inch, steel backing plates outside said liner and having vertical channels in their inside faces for circulating water and ribs between channels, and means fastening said plates to said liner, the improvement in which said fastening means includes stainless steel strips, a plurality of studs welded to each of said strips, and nuts threadedly engaging said studs, said liner having vertical channels in its outside face opposite said ribs, said strips being welded in said second-named channels, said studs extending through openings in said ribs, said nuts being located outside said plates.
Claim 2
Dependent Claim
109 words
In a continuous-casting mold which includes a relatively thin-walled copper liner of a thickness of about 3/8 inch, steel backing plates outside said liner and having vertical channels in their inside faces for circulating water and ribs between channels, and means fastening said plates to said liner, the improvement in which said fastening means includes stainless steel strips, a plurality of studs welded to each of said strips, and nuts threadedly engaging said studs, said liner having vertical channels in its outside face opposite said ribs, said strips being welded in said second-named channels, said studs extending through openings in said ribs, said nuts being located outside said plates.
Claim 3
Dependent Claim
22 words
A mold as defined in claim 1 in which said strips are continuous from the top to the bottom of said liner.
Claim 4
Dependent Claim
18 words
A mold as defined in claim 1 in which said strips are in sections with gaps between sections.
Claim 5
Dependent Claim
16 words
A mold as defined in claim 1 in which said liner is of one-piece welded construction.
Claim 6
Dependent Claim
21 words
A mold as defined in claim 1 in which said liner is of four-piece construction with end walls abutting side walls.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |