Patent US3082933A successfully refreshed from Google Patents.
US3082933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic clutch
Assignee: Motors Liquidation Co
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Filing: 1960-12-16
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Granted: 1963-03-26
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Expires: 1980-12-16
Abstract
No abstract record available.
Inventors
- 👤 James A Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:33
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/108; F16D27/112; F16D2027/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN COMBINATION, A DEVICE PROVIDED WITH A FIRST HOUSING AND A ROTATABLE SHAFT PROTRUDING FROM THE FIRST HOUSING, A SLEEVE OF PARAMAGNETIC MATERIAL RIGID WITH AND EXTENDING FROM SAID HOUSING SURROUNDING AND CONCENTRIC WITH SAID SHAFT, SAID SLEEVE BEING PROVIDED WITH A LOCKING RECESS, A REMOVABLE COIL HOUSING IN THE FORM OF A RING OF PARAMAGNETIC MATERIAL SEATED ON SAID SLEEVE AGAINST SAID FIRST HOUSING AND A RING SHAPED COIL LODGED WITHIN AND BONDED TO SAID COIL HOUSING, REMOVABLE LOCKING MEANS HAVING A PORTION LODGED IN SAID RECESS FOR LOCKING AXIALLY SAID COIL HOUSING ON SAID SLEEVE, INTERLOCKING MEANS BETWEEN SAID COIL HOUSING AND SAID FIRST HOUSING TO PREVENT ROTATION OF SAID COIL HOUSING UPON SAID SLEEVE, A DRIVING ELEMENT ROTATABLE RELATIVE TO SAID SLEEVE COMPRISING A PLURALITY OF MAGNETICALLY SEPARATED PARAMAGNETIC RINGS MAGNETICALLY ASSOCIATED WITH SAID COIL HOUSING, AND AN ARMATURE CONNECTED TO SAID SHAFT MAGNETICALLY ASSOCIATED WITH SAID SEPARATED RINGS.
Claim 2
Dependent Claim
152 words
IN COMBINATION, A DEVICE PROVIDED WITH A FIRST HOUSING AND A ROTATABLE SHAFT PROTRUDING FROM THE FIRST HOUSING, A SLEEVE OF PARAMAGNETIC MATERIAL RIGID WITH AND EXTENDING FROM SAID HOUSING SURROUNDING AND CONCENTRIC WITH SAID SHAFT, SAID SLEEVE BEING PROVIDED WITH A LOCKING RECESS, A REMOVABLE COIL HOUSING IN THE FORM OF A RING OF PARAMAGNETIC MATERIAL SEATED ON SAID SLEEVE AGAINST SAID FIRST HOUSING AND A RING SHAPED COIL LODGED WITHIN AND BONDED TO SAID COIL HOUSING, REMOVABLE LOCKING MEANS HAVING A PORTION LODGED IN SAID RECESS FOR LOCKING AXIALLY SAID COIL HOUSING ON SAID SLEEVE, INTERLOCKING MEANS BETWEEN SAID COIL HOUSING AND SAID FIRST HOUSING TO PREVENT ROTATION OF SAID COIL HOUSING UPON SAID SLEEVE, A DRIVING ELEMENT ROTATABLE RELATIVE TO SAID SLEEVE COMPRISING A PLURALITY OF MAGNETICALLY SEPARATED PARAMAGNETIC RINGS MAGNETICALLY ASSOCIATED WITH SAID COIL HOUSING, AND AN ARMATURE CONNECTED TO SAID SHAFT MAGNETICALLY ASSOCIATED WITH SAID SEPARATED RINGS.
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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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |