US3608616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous casting apparatus with pressure equalization chamber
Assignee: Schloemann AG
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Filing: 1969-03-19
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Granted: 1971-09-28
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Expires: 1989-03-19
Abstract
Abstract Continuous casting apparatus in which the mold oscillates and the space above the melt in the mold is enclosed and connected to an equalization chamber. Oscillation of the mold varies the volume and thereby the pressure in the space above the melt and the equalization chamber has variable volume means for substantially compensating the volume change in the space above the melt and thereby maintaining a substantially constant pressure in the space above the melt as the mold oscillates.
Inventors
- 👤 Ralf Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:03
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/10; B22D11/106; B22D11/04; B22D11/053
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
In a continuous casting apparatus including a tundish, a chilled mold mounted below said tundish, and meaNs for oscillating said mold with respect to said tundish, the improvement comprising means for sealing the space between the tundish and the upper end of the mold, means for filling said space with a protective has and maintaining said gas under a predetermined constant pressure, a pressure equalization chamber communicating with said space, and piston means within said chamber responsive to oscillations of said mold for varying the volume of said chamber in inverse relation to variations in the volume of said space as the mold is oscillated.
Claim 2
Dependent Claim
105 words
In a continuous casting apparatus including a tundish, a chilled mold mounted below said tundish, and meaNs for oscillating said mold with respect to said tundish, the improvement comprising means for sealing the space between the tundish and the upper end of the mold, means for filling said space with a protective has and maintaining said gas under a predetermined constant pressure, a pressure equalization chamber communicating with said space, and piston means within said chamber responsive to oscillations of said mold for varying the volume of said chamber in inverse relation to variations in the volume of said space as the mold is oscillated.
Claim 3
Dependent Claim
18 words
Apparatus as claimed in claim 1 including means operatively connecting said piston to said mold for actuation thereby.
Claim 4
Dependent Claim
36 words
Apparatus as claimed in claim 2 in which said means operatively connecting said piston to said mold comprises a two-armed lever having one end connected to said piston and the other end connected to said mold.
Claim 5
Dependent Claim
26 words
Apparatus as claimed in claim 2 in which said means operatively connecting said piston to said mold is adjustable to alter the stroke of said piston.
Claim 6
Dependent Claim
37 words
Apparatus as claimed in claim 2 in which said means operatively connecting said piston to said mold includes electrical means for sensing the oscillating movements of said mold, and electrical means controlled thereby for actuating said piston.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |