US3602290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dummy bar for continuous casting
Assignee: Schloemann AG
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Filing: 1968-08-23
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Granted: 1971-08-31
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Expires: 1988-08-23
Abstract
Abstract In a dummy bar for temporarily plugging an end of an open-ended continuous-casting mold at the start of casting, means for removably connecting the head of the dummy bar to a casting being formed in the mold comprises a notch in one side of the dummy bar head. The notch has a deeply indented portion and a less deeply indented portion between the deeply indented portion and the end of the head that is within the mold when the head is inserted in the mold to plug it. Thus, with the head plugging the mold, the notch and adjacent wall of the mold form a hooklike cavity in which molten metal poured into the mold for the casting flows and solidifies for making the connection. Then when the dummy bar and the casting attached thereto are withdrawn from the mold, they are separated by moving the dummy bar sideways in a direction to unhook them.
Inventors
- 👤 George E Schmidt
- 👤 Lyle J Johnson
- 👤 Willi Simons
- 👤 Walter Hess
- 👤 Josef Bard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:48
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/08; B22D11/081; B22D11/083
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
271 words
A dummy bar having a head adapted for removably attaching the dummy bar to the end of a continuous metal casting formed in the open-ended mold cavity, said head comprising a lower part and an upper part, the lower part of said head having a cross-sectional configuration and dimension to removably fit in and plug an end of the mold cavity, the upper part of said head having a notch in one side, at least a portion of the wall of the head at the opposite side from the notch being adapted to abut the adjacent portion of the sidewall of the mold cavity when the head is in said end of the mold cavity for preventing molten metal in the mold cavity from penetrating between said adjacent wall portions of the head and mold cavity, said notch having a relatively deeply indented portion and a less deeply indented portion between the deeply indented portion and the end of the head that is within the mold cavity when the head is in said end therEof for forming a hooklike cavity into which molten metal poured into the mold cavity flows and solidifies for attaching the upper part of the dummy bar head to the casting thereby formed, the end wall of the deeply indented portion of the notch, which is adjacent to the bottom wall of the less deeply indented portion of the notch, being undercut to form a barb, the upper part of the dummy bar head and the casting being adapted to be separated subsequently by relative lateral movement away from each other with respect to their longitudinal axis.
Claim 2
Dependent Claim
271 words
A dummy bar having a head adapted for removably attaching the dummy bar to the end of a continuous metal casting formed in the open-ended mold cavity, said head comprising a lower part and an upper part, the lower part of said head having a cross-sectional configuration and dimension to removably fit in and plug an end of the mold cavity, the upper part of said head having a notch in one side, at least a portion of the wall of the head at the opposite side from the notch being adapted to abut the adjacent portion of the sidewall of the mold cavity when the head is in said end of the mold cavity for preventing molten metal in the mold cavity from penetrating between said adjacent wall portions of the head and mold cavity, said notch having a relatively deeply indented portion and a less deeply indented portion between the deeply indented portion and the end of the head that is within the mold cavity when the head is in said end therEof for forming a hooklike cavity into which molten metal poured into the mold cavity flows and solidifies for attaching the upper part of the dummy bar head to the casting thereby formed, the end wall of the deeply indented portion of the notch, which is adjacent to the bottom wall of the less deeply indented portion of the notch, being undercut to form a barb, the upper part of the dummy bar head and the casting being adapted to be separated subsequently by relative lateral movement away from each other with respect to their longitudinal axis.
Claim 3
Dependent Claim
280 words
A dummy bar having a head adapted for removably attaching the dummy bar to the end of a continuous metal casting formed in the open ended mold cavity, said head comprising a lower part and an upper part, the lower part of said head having a cross-sectional configuration and dimension to removably fit in and plug an end of the mold cavity, the upper part of said head having a notch in one side, at least a portion of the wall of the head at the opposite side from the notch being adapted to abut the adjacent portion of the sidewall of the mold cavity when the head is in said end of the mold cavity for preventing molten metal in the mold cavity from penetrating between said adjacent wall portions of the head and mold cavity, said notch having a relatively deeply indented portion and a less deeply indented portion between the deeply indented portion and the end of the head that is within the mold cavity when the head is in said end thereof for forming a hooklike cavity into which molten metal poured into the mold cavity flows and solidifies for attaching the upper part of the dummy bar head to the casting thereby formed, the two portions of at least one of the end walls of the deeply indented portion of the notch being inclined in the same direction respectively outwardly from the central portion of said end wall to opposite sides of the notch, the upper part of the dummy bar head and the casting being adapted to be separated subsequently by relative lateral movement away from each other with respect to their longitudinal axis.
Claim 4
Dependent Claim
280 words
A dummy bar having a head adapted for removably attaching the dummy bar to the end of a continuous metal casting formed in the open ended mold cavity, said head comprising a lower part and an upper part, the lower part of said head having a cross-sectional configuration and dimension to removably fit in and plug an end of the mold cavity, the upper part of said head having a notch in one side, at least a portion of the wall of the head at the opposite side from the notch being adapted to abut the adjacent portion of the sidewall of the mold cavity when the head is in said end of the mold cavity for preventing molten metal in the mold cavity from penetrating between said adjacent wall portions of the head and mold cavity, said notch having a relatively deeply indented portion and a less deeply indented portion between the deeply indented portion and the end of the head that is within the mold cavity when the head is in said end thereof for forming a hooklike cavity into which molten metal poured into the mold cavity flows and solidifies for attaching the upper part of the dummy bar head to the casting thereby formed, the two portions of at least one of the end walls of the deeply indented portion of the notch being inclined in the same direction respectively outwardly from the central portion of said end wall to opposite sides of the notch, the upper part of the dummy bar head and the casting being adapted to be separated subsequently by relative lateral movement away from each other with respect to their longitudinal axis.
Claim 5
Dependent Claim
59 words
The dummy bar of claim 2 in which the bottom wall of the deeply indented portion of the notch is approximately parallel to the sidewall of the dummy bar head behind it, and in which the sidewalls and at least one of the end walls of the deeply indented portion of the notch diverge from the bottom wall thereof.
Claim 6
Dependent Claim
264 words
A dummy bar having a head adapted for removably attaching the dummy bar to the end of a continuous metal casting formed in the open-ended mold cavity, said head comprising a lower part and an upper part, the lower part of said head having a cross-sectional configuration and dimension to removably fit in and plug an end of the mold cavity, the upper part of said head having a notch in one side, at least a portion of the wall of the head at the opposite side from the notch being adapted to abut the adjacent portion of the sidewall of the mold cavity when the head is in said end of the mold cavity for preventing molten metal in the mold cavity from penetrating between said adjacent wall portions of the head and mold cavity, said notch having a relatively deeply indented portion and a less deeply indented portion between the deeply indented portion and the end of the head that is within the mold cavity when the head is in said end thereof for forming a hooklike cavity into which molten metal poured into the mold cavity flows and solidifies for attaching the upper part of the dummy bar head to the casting thereby formed, the less deeply indented portion of the notch having at least one opening therethrough between the deeply indented portion and the adjacent end of the head, the upper part of the dummy bar head and the casting being adapted to be separated subsequently by relative lateral movement away from each other with respect to their longitudinal axis.
Claim 7
Dependent Claim
264 words
A dummy bar having a head adapted for removably attaching the dummy bar to the end of a continuous metal casting formed in the open-ended mold cavity, said head comprising a lower part and an upper part, the lower part of said head having a cross-sectional configuration and dimension to removably fit in and plug an end of the mold cavity, the upper part of said head having a notch in one side, at least a portion of the wall of the head at the opposite side from the notch being adapted to abut the adjacent portion of the sidewall of the mold cavity when the head is in said end of the mold cavity for preventing molten metal in the mold cavity from penetrating between said adjacent wall portions of the head and mold cavity, said notch having a relatively deeply indented portion and a less deeply indented portion between the deeply indented portion and the end of the head that is within the mold cavity when the head is in said end thereof for forming a hooklike cavity into which molten metal poured into the mold cavity flows and solidifies for attaching the upper part of the dummy bar head to the casting thereby formed, the less deeply indented portion of the notch having at least one opening therethrough between the deeply indented portion and the adjacent end of the head, the upper part of the dummy bar head and the casting being adapted to be separated subsequently by relative lateral movement away from each other with respect to their longitudinal axis.
Claim 8
Dependent Claim
37 words
The dummy bar of claim 4 in which said notch extends completely across one side of the dummy bar head so that the sides of the notch are opEn at opposite sides of the dummy bar head.
Claim 9
Dependent Claim
29 words
The dummy bar of claim 5 in which at least one of the end walls of the deeply indented portion of the notch diverges from the bottom wall thereof.
Claim 10
Dependent Claim
42 words
The dummy bar of claim 2 in which the inclination of said end walls is in a direction such that the central portion of the deeply indented portion of the notch between the end walls thereof is wider than opposite sides thereof.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |