US2804955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic fluid mixture coupling
Assignee: Eaton Corp
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Filing: 1953-03-05
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Granted: 1957-09-03
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Expires: 1973-03-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Andrew S Gill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:21
CPC Classifications
F; F16; F16D; F16D37/00; F16D37/02; F16D2037/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A MAGNETIC COUPLING INCLUDING RELATIVELY ROTATABLE MAGNETIZABLE MEMBERS SPACED FROM ONE ANOTHER BY A GAP AND MEANS FOR GENERATING A FLUX FIELD INTERLINKING SAID MEMBERS ACROSS SAID GAP; A MAGNETIC MEDIUM IN SAID GAP ADAPTED TO TRANSMIT TORQUE BETWEEN SAID MEMBERS AND COMPRISING BY WEIGHT 100 PARTS OF 4 PERCENT SILICON STEEL IN FINELY DIVIDED FORM, 1/2 TO 3 PARTS OF LUBRICANT, AND 1/2 TO 10 PARTS OF A NONFERROUS MATERIAL IN FINELY DIVIDED FORM AS A TORQUE RESTORER COMPRISING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF BRONZE AND COPPER.
Claim 2
Dependent Claim
93 words
IN A MAGNETIC COUPLING INCLUDING RELATIVELY ROTATABLE MAGNETIZABLE MEMBERS SPACED FROM ONE ANOTHER BY A GAP AND MEANS FOR GENERATING A FLUX FIELD INTERLINKING SAID MEMBERS ACROSS SAID GAP; A MAGNETIC MEDIUM IN SAID GAP ADAPTED TO TRANSMIT TORQUE BETWEEN SAID MEMBERS AND COMPRISING BY WEIGHT 100 PARTS OF 4 PERCENT SILICON STEEL IN FINELY DIVIDED FORM, 1/2 TO 3 PARTS OF LUBRICANT, AND 1/2 TO 10 PARTS OF A NONFERROUS MATERIAL IN FINELY DIVIDED FORM AS A TORQUE RESTORER COMPRISING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF BRONZE AND COPPER.
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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |