US2818517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of securing a member to a shaft
Assignee: US Philips Corp
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Filing: 1954-10-05
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Granted: 1957-12-31
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Expires: 1974-10-05
Abstract
No abstract record available.
Inventors
- 👤 Loosjes Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:55
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A DEVICE COMPRISING AN ANNULAR PERMANENT MAGNET CONSTITUTED OF OXIDIC FERROMAGNETIC MATERIAL AND HAVING AN APERTURE THEREIN, A SHAFT HAVING A SMALLER DIAMETER THAN THE CORRESPONDING DIAMETER OF SAID APERTURE, A PART OF SAID SHAFT BEING POSITIONED IN SAID APERTURE IN SPACED RELATION FROM THE INNER SURFACE THEROF, A SEAL COMPRISING A POROUS FELT MASS IMPREGNATED WITH A HIGH MOLECULAR WEIGHT SILICON COMPOUND POSITIONED BETWEEN PART OF SAID SHAFT AND THE INNER SURFACE OF SAID APERTURE, AND A THERMOSETTING CEMENT JOINING A SELECTED SURFACE OF SAID SHAFT TO A SELECTED PORTION OF THE SAID INNER SURFACE OF SAID APERTURE.
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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |