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US3196486A
Expired / Lapsed
US
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Auger extrusion for furnace electrodes
Assignee: Union Carbide Corp
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Filing: 1962-04-16
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Granted: 1965-07-27
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Expires: 1982-04-16
Abstract
No abstract record available.
Inventors
- 👤 Elmer G Shesler
- 👤 Elmer A Bowen
- 👤 Ronald F Burden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:33
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
AN APPARATUS FOR THE EXTRUSION OF PITCH BONDED CARBON ELECTRODES WHICH COMPRISES AN AUGER FOR DELIVERING A CARBONACEOUS MIX STREAM TO A FORMING DIE OF A LARGER DIAMETER THAN THE DIAMETER OF SAID AUGER, AN EXPANSION CHAMBER ADJACENT SAID AUGER, SAID EXPANSION CHAMBER HAVING A GENERALLY CIRCULAR CROSS-SECTION OF A DIAMETER AT LEAST APPROXIMATELY 1.2 TIMES THE DIAMETER OF SAID FORMING DIE, AND AN ORIENTATION SLEEVE OF UNIFORM DIAMETER INTERMEDIATE SAID EXPANSION CHAMBER AND SAID FORMING DIE, SAID EXPANSION CHAMBER BEING PROVIDED WITH A STATIONARY PLATE SPACED APART FROM THE EXIT APERTURE OF SAID CHAMBER AND BEING OF SUCH DIAMETER THAT IT DEFINES AN ANNULUS BETWEEN ITS PERIPHERY AND THE PERIPHERY OF SAID EXPANSION CHAMBER THEREBY ELIMINATING THE CORING EFFECT OF SAID AUGER BY OBSTRUCTING THE FLOW OF THE STRAIGHT THROUGH CENTER PORTION OF THE MIX SUCH THAT THE MIX UPON EMERGING FROM THE CENTRAL ZONE OF SAID DIE IS FLOWING AT SUBSTANTIALLY THE SAME SPEED AS SAID MIX EXITING ALONG THE PERIPHERAL WALLS OF SAID DIE.
Claim 2
Independent Claim
167 words
AN APPARATUS FOR THE EXTRUSION OF PITCH BONDED CARBON ELECTRODES WHICH COMPRISES AN AUGER FOR DELIVERING A CARBONACEOUS MIX STREAM TO A FORMING DIE OF A LARGER DIAMETER THAN THE DIAMETER OF SAID AUGER, AN EXPANSION CHAMBER ADJACENT SAID AUGER, SAID EXPANSION CHAMBER HAVING A GENERALLY CIRCULAR CROSS-SECTION OF A DIAMETER AT LEAST APPROXIMATELY 1.2 TIMES THE DIAMETER OF SAID FORMING DIE, AND AN ORIENTATION SLEEVE OF UNIFORM DIAMETER INTERMEDIATE SAID EXPANSION CHAMBER AND SAID FORMING DIE, SAID EXPANSION CHAMBER BEING PROVIDED WITH A STATIONARY PLATE SPACED APART FROM THE EXIT APERTURE OF SAID CHAMBER AND BEING OF SUCH DIAMETER THAT IT DEFINES AN ANNULUS BETWEEN ITS PERIPHERY AND THE PERIPHERY OF SAID EXPANSION CHAMBER THEREBY ELIMINATING THE CORING EFFECT OF SAID AUGER BY OBSTRUCTING THE FLOW OF THE STRAIGHT THROUGH CENTER PORTION OF THE MIX SUCH THAT THE MIX UPON EMERGING FROM THE CENTRAL ZONE OF SAID DIE IS FLOWING AT SUBSTANTIALLY THE SAME SPEED AS SAID MIX EXITING ALONG THE PERIPHERAL WALLS OF SAID DIE.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |