US3263274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength rotary member and method
Assignee: Beckman Coulter Inc
•
Filing: 1963-03-14
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Granted: 1966-08-02
•
Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Edward G Pickels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:50
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/0003; B04; B04B; B04B5/00; B04B5/08; B04B7/00; B04B7/08; B04B7/085; B22; B22D; B22D13/00; B22D13/04; F; F16; F16F; F16F15/00; F16F15/30; F16F15/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
APPARATUS FOR FORMING A CYLINDRICAL MEMBER ADAPTED FOR HIGH SPEED ROTATION ABOUT ITS OWN AXIS COMPRISING A HOLLOW BOWL-SHAPED GENERALLY CYLINDRICAL MOLD OPEN AT ONE END FOR RECEIVING FLUID MATERIAL, SAID MOLD BEING MOUNTED FOR CENTRIFUGATION ROTATION ABOUT THE AXIS THEREOF, A MANDREL DEPENDING COAXIALLY INTO SAID MOLD AND SPACED THEREFROM, SAID MANDREL BEING ROTATABLE WITH RESPECT TO SAID MOLD TO DEFINE SAID MEMBER BEING FORMED, MEANS FOR ROTATING SAID MOLD AND MANDREL AT DIFFERENT RESPECTIVE ANGULAR VELOCITIES, AND MEANS FOR ENSURING A SUFFICIENT SUPPLY OF MATERILAL TO PROVIDE FULL THICKNESS OF THE MEMBER BEING FORMED, SAID LAST MEANS INCLUDING AN UPWARDLY EXTENDIN SLOT FORMED ALONG SAID MANDREL AND ACCESSIBLE FOR FILLING AT THE UPPER END THEREOF.
Claim 2
Dependent Claim
117 words
APPARATUS FOR FORMING A CYLINDRICAL MEMBER ADAPTED FOR HIGH SPEED ROTATION ABOUT ITS OWN AXIS COMPRISING A HOLLOW BOWL-SHAPED GENERALLY CYLINDRICAL MOLD OPEN AT ONE END FOR RECEIVING FLUID MATERIAL, SAID MOLD BEING MOUNTED FOR CENTRIFUGATION ROTATION ABOUT THE AXIS THEREOF, A MANDREL DEPENDING COAXIALLY INTO SAID MOLD AND SPACED THEREFROM, SAID MANDREL BEING ROTATABLE WITH RESPECT TO SAID MOLD TO DEFINE SAID MEMBER BEING FORMED, MEANS FOR ROTATING SAID MOLD AND MANDREL AT DIFFERENT RESPECTIVE ANGULAR VELOCITIES, AND MEANS FOR ENSURING A SUFFICIENT SUPPLY OF MATERILAL TO PROVIDE FULL THICKNESS OF THE MEMBER BEING FORMED, SAID LAST MEANS INCLUDING AN UPWARDLY EXTENDIN SLOT FORMED ALONG SAID MANDREL AND ACCESSIBLE FOR FILLING AT THE UPPER END THEREOF.
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |