Patent US3223508A successfully refreshed from Google Patents.
US3223508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing device for admixing additives to a melt
Assignee: Schlosser and Co GmbH
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Filing: 1961-02-09
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Granted: 1965-12-14
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Expires: 1981-02-09
Abstract
No abstract record available.
Inventors
- 👤 Wolf Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:42
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/10; C03B19/109; C03B19/1005; C03B19/104; C04; C04B; C04B5/00; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A DEVICE FOR ADMIXING SOLID ADDITIVES TO THE FORM OF DISCRETE PARTICLES TO A MOLTEN HARDENING MATERIAL, SAID DEVICE COMPRISING A GENERALLY CYLINDRICAL FORMING TUBE HAVING IN ITS WALL SURFACE A SPIRAL GROOVE OF CONCAVE CROSS SECTION IN REFERENCE TO THE INTERIOR OF THE TUBE, SAID TUBE BEING ROTARY ABOUT ITS LONGITUDINAL AXIS, FIRST FEED MEANS FOR FEEDING THE MOTEN MATERIAL WHILE IN ITS LIQUID STATE INTO THE TUBE AT ONE END THEROF, SECOND FEED MEANS FOR FEEDING THE SOLID ADDITIVES INTO THE TUBE AT THE SAME END THEROF, THEREBY EFFECTING MIXING OF THE MOLTEN MATERIAL AND THE ADDITIVES, A SECOND ROTARY TUBE ENCOMPASSING THE FORMING TUBE RADIALLY SPACED THEREFROM TO DEFINE BETWEEN THE TWO TUBES AN ANNULAR SPACE FOR A COOLANT TO CAUSE HARDENING OF THE MIXTURE DURING THE TRAVEL THEREOF ALONG THE SPIRAL GROOVE OF THE ROTARY TUBE, A STATIONARY AIR-TIGHT CASING, BOTH SAID TUBES BEING MOUNTED WITHIN THE CASING ROTATABLE IN REFERENCE THERETO, AND A DISCHARGE CHUTE DISPOSED ADJACENT THE OTHER END OF THE TUBE AND IN COMMUNICATION THEREWITH FOR DISCHARGING THE HARDENED MIXTURE AT SAID END OF THE FORMING TUBE.
Claim 2
Independent Claim
184 words
A DEVICE FOR ADMIXING SOLID ADDITIVES TO THE FORM OF DISCRETE PARTICLES TO A MOLTEN HARDENING MATERIAL, SAID DEVICE COMPRISING A GENERALLY CYLINDRICAL FORMING TUBE HAVING IN ITS WALL SURFACE A SPIRAL GROOVE OF CONCAVE CROSS SECTION IN REFERENCE TO THE INTERIOR OF THE TUBE, SAID TUBE BEING ROTARY ABOUT ITS LONGITUDINAL AXIS, FIRST FEED MEANS FOR FEEDING THE MOTEN MATERIAL WHILE IN ITS LIQUID STATE INTO THE TUBE AT ONE END THEROF, SECOND FEED MEANS FOR FEEDING THE SOLID ADDITIVES INTO THE TUBE AT THE SAME END THEROF, THEREBY EFFECTING MIXING OF THE MOLTEN MATERIAL AND THE ADDITIVES, A SECOND ROTARY TUBE ENCOMPASSING THE FORMING TUBE RADIALLY SPACED THEREFROM TO DEFINE BETWEEN THE TWO TUBES AN ANNULAR SPACE FOR A COOLANT TO CAUSE HARDENING OF THE MIXTURE DURING THE TRAVEL THEREOF ALONG THE SPIRAL GROOVE OF THE ROTARY TUBE, A STATIONARY AIR-TIGHT CASING, BOTH SAID TUBES BEING MOUNTED WITHIN THE CASING ROTATABLE IN REFERENCE THERETO, AND A DISCHARGE CHUTE DISPOSED ADJACENT THE OTHER END OF THE TUBE AND IN COMMUNICATION THEREWITH FOR DISCHARGING THE HARDENED MIXTURE AT SAID END OF THE FORMING TUBE.
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |