Patent US2748911A successfully refreshed from Google Patents.
US2748911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic fluid clutch
Assignee: Individual
•
Filing: 1951-10-09
•
Granted: 1956-06-05
•
Expires: 1971-10-09
Abstract
No abstract record available.
Inventors
- 👤 William F Stahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:35
CPC Classifications
F; F16; F16D; F16D37/00; F16D37/02; F16D2037/002; Y; Y10; Y10S; Y10S82/00; Y10S82/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
A MAGNETIC COUPLING COMPRISING A HOUSING HAVING SIDE AND OPPOSED END WALLS, AN INNER MEMBER MOUNTED FOR RELATIVE ROTATION WITH AND AXIALLY ALIGNED WITHIN THE HOUSING TO PROVIDE A LONGITUDINAL SPACE THEREWITH, SAID INNER MEMBER HAVING ONE END WALL POSITIONED INWARDLY OF ONE OPPOSED END WALL OF THE HOUSING FORMING A TRANSVERSE SPACE IN COMMUNICATION WITH SAID LONGITUDINAL SPACE AND PROVIDING THEREWITH A FLUID PATH, THE OTHER OPPOSED END WALL OF THE INNER MEMBER ABUTTING THE OTHER END WALL OF THE HOUSING AND PREVENTING CIRCULATION OF THE FLUID WITHIN THE HOUSING, INLET MEANS IN SAID ONE OPPOSED END WALL OF THE HOUSING FOR SUPPLYING MAGNETIZABLE FLUID TO THE FLUID PATH, OUTLET MEANS MEANS IN THE OTHER OPPOSED END WALL OF THE HOUSING IN COMMUNICATION WITH THE FLUID PATH, A MAGNETIC CARRIED BY THE INNER MEMBER FOR MAGNETIZING THE FLUID, GROOVULAR MEANS DISPOSED IN SAID LONGITUDINAL SPACE FOR DIRECTING THE FLUID BETWEEN SAID INLET AND OUTLET DURING RELATIVE ROTATION BETWEEN THE HOUSING AND THE INNER MEMBER AND CONDUIT MEANS BETWEEN THE INLET AND OUTLET AND EXTERIORLY OF THE HOUSING FOR EFFECTING CIRCULATION OF THE FLUID DURING RELATIVE ROTATION OF THE HOUSING AND INNER MEMBER.
Claim 2
Dependent Claim
193 words
A MAGNETIC COUPLING COMPRISING A HOUSING HAVING SIDE AND OPPOSED END WALLS, AN INNER MEMBER MOUNTED FOR RELATIVE ROTATION WITH AND AXIALLY ALIGNED WITHIN THE HOUSING TO PROVIDE A LONGITUDINAL SPACE THEREWITH, SAID INNER MEMBER HAVING ONE END WALL POSITIONED INWARDLY OF ONE OPPOSED END WALL OF THE HOUSING FORMING A TRANSVERSE SPACE IN COMMUNICATION WITH SAID LONGITUDINAL SPACE AND PROVIDING THEREWITH A FLUID PATH, THE OTHER OPPOSED END WALL OF THE INNER MEMBER ABUTTING THE OTHER END WALL OF THE HOUSING AND PREVENTING CIRCULATION OF THE FLUID WITHIN THE HOUSING, INLET MEANS IN SAID ONE OPPOSED END WALL OF THE HOUSING FOR SUPPLYING MAGNETIZABLE FLUID TO THE FLUID PATH, OUTLET MEANS MEANS IN THE OTHER OPPOSED END WALL OF THE HOUSING IN COMMUNICATION WITH THE FLUID PATH, A MAGNETIC CARRIED BY THE INNER MEMBER FOR MAGNETIZING THE FLUID, GROOVULAR MEANS DISPOSED IN SAID LONGITUDINAL SPACE FOR DIRECTING THE FLUID BETWEEN SAID INLET AND OUTLET DURING RELATIVE ROTATION BETWEEN THE HOUSING AND THE INNER MEMBER AND CONDUIT MEANS BETWEEN THE INLET AND OUTLET AND EXTERIORLY OF THE HOUSING FOR EFFECTING CIRCULATION OF THE FLUID DURING RELATIVE ROTATION OF THE HOUSING AND INNER MEMBER.
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) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |