Patent US4091229A successfully refreshed from Google Patents.
US4091229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slag and alloy feeding based on electrode weight
Assignee: WOODING CORP
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Filing: 1977-03-01
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Granted: 1978-05-23
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Expires: 1997-03-01
Abstract
Abstract Load cells continuously measure the weight of a consumable electrode as it is being melted in an electroslag melting furnace. This information is compared to similar information obtained from load cells measuring the weight of a supply of granular slag and/or alloy additions intended to be added to the molten slag in the furnace. The addition of the granular slag and/or alloy is controlled based on the results of this comparison.
Inventors
- 👤 Patrick J. Wooding
- 👤 Edgar V. Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:43
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/16; C22B9/18; G; G01; G01G; G01G19/00; H; H05; H05B; H05B3/00; H05B3/60
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
In an electroslag melting furnace system having a consumable electrode and a supply of additive material adapted to be supplied to the melting furnace as the electrode is being melted, the improvement comprising means for weighing said electrode as it is being melted and means for controlling the addition of said additive material in response to said weighing means.
Claim 2
Dependent Claim
59 words
In an electroslag melting furnace system having a consumable electrode and a supply of additive material adapted to be supplied to the melting furnace as the electrode is being melted, the improvement comprising means for weighing said electrode as it is being melted and means for controlling the addition of said additive material in response to said weighing means.
Claim 3
Dependent Claim
31 words
The improvement as claimed in claim 1 further including means for weighing said additive material and means for comparing the weight of said additive material to the weight of said electrode.
Claim 4
Dependent Claim
18 words
The improvement as claimed in claim 2 wherein said means for controlling is responsive to said comparison means.
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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |