US3072813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor having a plurality of permanent magnets arranged on their periphery
Assignee: US Philips Corp
•
Filing: 1958-09-29
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Granted: 1963-01-08
•
Expires: 1978-09-29
Abstract
No abstract record available.
Inventors
- 👤 Reijnst Maximilien Felix
- 👤 Wilhelmus Hendrikus Donselaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:28
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2753; H02K1/276; H02K1/2766; H02K1/2773
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A ROTOR COMPRISING A SHAFT, A PLURALITY OF PERMANENT MAGNETS RADIALLY DISPOSED ABOUT SAID SHAFT, EACH OF SAID MAGNETS BEING CONSTITUTED OF A MATERIAL HAVING A COERCIVE FORCE (HC) GREATER THAN ABOUT 1000 OERESTED, SAID MAGNETS BEING DISPOSED SIDE-BY-SIDE IN A TANGENTIAL DIRECTION WITH POLES OF LIKE POLARITY ADJACENT ONE ANOTHER, POLE PLATES DISPOSED BETWEEN AND SEPARATING ADJACENT MAGNETS, SAID MAGNETS BEING SECURED TO THE POLE PLATES, AN ANNULAR MEMBER OF NON-MAGNETIC MATERIAL TO WHICH SAID POLE PLATES ARE SECURED, AND A PLURALITY OF RADIALLY-EXTENDING MEMBERS OF NON-MAGNETIC MATERIAL EACH SECURED AT ONE END TO SAID ANNULAR MEMBER AND SECURED AT THE OTHER END TO SAID SHAFT WHEREBY SAID MAGNETS ARE SECURELY POSITIONED ABOUT THE PERIPHERY OF SAID SHAFT.
Claim 2
Dependent Claim
119 words
A ROTOR COMPRISING A SHAFT, A PLURALITY OF PERMANENT MAGNETS RADIALLY DISPOSED ABOUT SAID SHAFT, EACH OF SAID MAGNETS BEING CONSTITUTED OF A MATERIAL HAVING A COERCIVE FORCE (HC) GREATER THAN ABOUT 1000 OERESTED, SAID MAGNETS BEING DISPOSED SIDE-BY-SIDE IN A TANGENTIAL DIRECTION WITH POLES OF LIKE POLARITY ADJACENT ONE ANOTHER, POLE PLATES DISPOSED BETWEEN AND SEPARATING ADJACENT MAGNETS, SAID MAGNETS BEING SECURED TO THE POLE PLATES, AN ANNULAR MEMBER OF NON-MAGNETIC MATERIAL TO WHICH SAID POLE PLATES ARE SECURED, AND A PLURALITY OF RADIALLY-EXTENDING MEMBERS OF NON-MAGNETIC MATERIAL EACH SECURED AT ONE END TO SAID ANNULAR MEMBER AND SECURED AT THE OTHER END TO SAID SHAFT WHEREBY SAID MAGNETS ARE SECURELY POSITIONED ABOUT THE PERIPHERY OF SAID SHAFT.
References Cited (Backward Citations)
US1393395A
Cited
GB668436A
Cited
US2604499A
Cited
US2767368A
Cited
US2719931A
Cited
US2861205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |