US2847101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload releasing magnetic powder-clutch
Assignee: BASF SE
•
Filing: 1952-11-06
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Granted: 1958-08-12
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Expires: 1972-11-06
Abstract
No abstract record available.
Inventors
- 👤 Bergmann Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:07
CPC Classifications
F; F16; F16D; F16D37/00; F16D37/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A MAGNETIC COUPLING FOR THE TRANSMISSION OF TORQUE FROM ONE MEMBER TO ANOTHER BY THE APPLICATION OF A WHEREIN SAID MAGNETIZABLE POWDER CONSISTS AT LEAST PARTLY OF A FERRITE POWDER SELECTED FROM THE GROUP CONSISTING OF MANGANESE FERRITE, LEAD FERRITE AND MANGANESE-ZINC FERRITE, SAID POWDER HAVING A MAGNETIC CURIE POINT BETWEEN ABOUT 200* ANC 400*C. AND BELOW TEMPERATURES INJURIOUS TO SAID MAGNETIZABLE POWDER, WHEREBY THE COUPLING IS EFFECTIVE AT OPERATING TEMPERATURES AND AUTOMATCALLY DISCONNECTS BELOW INJURIOUS TEMPERATURES WHEN OVERHEATED.
Claim 2
Dependent Claim
79 words
A MAGNETIC COUPLING FOR THE TRANSMISSION OF TORQUE FROM ONE MEMBER TO ANOTHER BY THE APPLICATION OF A WHEREIN SAID MAGNETIZABLE POWDER CONSISTS AT LEAST PARTLY OF A FERRITE POWDER SELECTED FROM THE GROUP CONSISTING OF MANGANESE FERRITE, LEAD FERRITE AND MANGANESE-ZINC FERRITE, SAID POWDER HAVING A MAGNETIC CURIE POINT BETWEEN ABOUT 200* ANC 400*C. AND BELOW TEMPERATURES INJURIOUS TO SAID MAGNETIZABLE POWDER, WHEREBY THE COUPLING IS EFFECTIVE AT OPERATING TEMPERATURES AND AUTOMATCALLY DISCONNECTS BELOW INJURIOUS TEMPERATURES WHEN OVERHEATED.
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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |