US4119692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for manufacturing carbon electrodes
Assignee: Fives Cail Babcock SA
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Filing: 1977-02-10
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Granted: 1978-10-10
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Expires: 1997-02-10
Abstract
Abstract Carbon electrodes are manufactured in a mold which is integral with a vibrating table and whose open top is closed by a cover resting on a pasty mass in the mold. The vibrating assembly consisting of the table, mold and mass is subjected to a frequency of vibrations which is 1.1 to 1.6 times the frequency of natural vibrations of the assembly and the cover preferably applies a static pressure of about 0.5 bars on the mass.
Inventors
- 👤 Rene Durinck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:27
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/02; B30B11/022
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A process of manufacturing carbon electrodes from a pasty mass, wherein the pasty mass is placed into a mold having an open top, the mold being integral with a vibrating table and the table, mold and pasty mass constituting a vibrating assembly, maintaining the assembly at a frequency of natural vibrations, and closing the open top of the mold with a cover resting on the pasty mass in the mold, the improvement comprises the step of applying to the table vibrations of a frequency which is 1.1 to 1.6 times the frequency of the natural vibrations.
Claim 2
Dependent Claim
96 words
A process of manufacturing carbon electrodes from a pasty mass, wherein the pasty mass is placed into a mold having an open top, the mold being integral with a vibrating table and the table, mold and pasty mass constituting a vibrating assembly, maintaining the assembly at a frequency of natural vibrations, and closing the open top of the mold with a cover resting on the pasty mass in the mold, the improvement comprises the step of applying to the table vibrations of a frequency which is 1.1 to 1.6 times the frequency of the natural vibrations.
Claim 3
Dependent Claim
25 words
The manufacturing process of claim 1, further comprising the step of applying the cover under a static pressure of about 0.5 bars on the mass.
Claim 4
Dependent Claim
78 words
A mold apparatus for manufacturing carbon electrodes from a pasty mass, which comprises a vibrating table, vibrating means for the table, a mold affixed to the table, the mold having an open top, and a cover resting on a charge of the mass in the mold, the ratio of the mass of the cover to that of total mass of the vibrating assembly consisting of the table, the mold and the pasty mass being between 0.25 and 0.65.
Claim 5
Dependent Claim
78 words
A mold apparatus for manufacturing carbon electrodes from a pasty mass, which comprises a vibrating table, vibrating means for the table, a mold affixed to the table, the mold having an open top, and a cover resting on a charge of the mass in the mold, the ratio of the mass of the cover to that of total mass of the vibrating assembly consisting of the table, the mold and the pasty mass being between 0.25 and 0.65.
Claim 6
Dependent Claim
22 words
The molding apparatus of claim 3, wherein the the cover applies a static pressure of about 0.5 bars on the pasty mass.
Claim 7
Dependent Claim
30 words
The molding apparatus of claim 3, further comprising a resilient support for the table for maintaining the vibrating assembly at a frequency of natural vibrations between 12 and 17 Hz.
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) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |