Patent US3194855A successfully refreshed from Google Patents.
US3194855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of vibratorily extruding graphite
Assignee: Aeroprojects Inc
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Filing: 1961-10-02
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Granted: 1965-07-13
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Jones James Byron
- 👤 Jr William B Tarpley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:19
CPC Classifications
C; C01; C01B; C01B32/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR EXTRUDING A GREEN GRAPHITE EXTRUSION MIXTURE CONTAINING A BINDER LUBRICANT INTO AN UNRESTRAINED ARTICLE OF INDEFINITE LENGTH WHICH COMPRISES EX TRUDING SAID MIXTURE THROUGH A DIE WHILE SUBJECTING SAID MIXTURE TO VIBRATORY ENERGY HAVING A FREQUENCY OF BETWEEN 30 AND 300,000 CYCLES PER SECOND AND A POWER LEVEL SUFFICIENT TO PRODUCE AN EXTRUSION WHICH FORMS AN UNRESTRAINED GRAPHITE ARTICLE OF INDEFINITE LENGTH WHICH IS RELATIVELY FREE FROM BOTH SURFACE AND SUBSURFACE CRACKS UPON SUBSEQUENT GRAPHITIZATION, WITH SAID VIBRATORY ENERGY POWER LEVEL BEING SUFFICIENT TO EFFECT A REDUCTION IN THE REQUISITE AMOUNT OF PRESSURE NEEDED TO EXTRUDE SAID EXTRUSION MIXTURE THROUGH THE DIE.
Claim 2
Dependent Claim
105 words
A PROCESS FOR EXTRUDING A GREEN GRAPHITE EXTRUSION MIXTURE CONTAINING A BINDER LUBRICANT INTO AN UNRESTRAINED ARTICLE OF INDEFINITE LENGTH WHICH COMPRISES EX TRUDING SAID MIXTURE THROUGH A DIE WHILE SUBJECTING SAID MIXTURE TO VIBRATORY ENERGY HAVING A FREQUENCY OF BETWEEN 30 AND 300,000 CYCLES PER SECOND AND A POWER LEVEL SUFFICIENT TO PRODUCE AN EXTRUSION WHICH FORMS AN UNRESTRAINED GRAPHITE ARTICLE OF INDEFINITE LENGTH WHICH IS RELATIVELY FREE FROM BOTH SURFACE AND SUBSURFACE CRACKS UPON SUBSEQUENT GRAPHITIZATION, WITH SAID VIBRATORY ENERGY POWER LEVEL BEING SUFFICIENT TO EFFECT A REDUCTION IN THE REQUISITE AMOUNT OF PRESSURE NEEDED TO EXTRUDE SAID EXTRUSION MIXTURE THROUGH THE DIE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |