US3293470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic machines
Assignee: Individual
•
Filing: 1963-05-08
•
Granted: 1966-12-20
•
Expires: 1983-05-08
Abstract
No abstract record available.
Inventors
- 👤 Polgreen Geoffrey Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:21
CPC Classifications
H; H02; H02K; H02K31/00; H02K31/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
AN ELECTROMAGNETIC MACHINE COMPRISING A ROTOR MEMBER, A STATOR MEMBER, AT LEAST ONE SET OF ELEMENTS IN EACH SAID MEMBER, SAID SET COMPRISING IN ONE SAID MEMBER MEANS DEFINING TWO MAGNETIC CIRCUITS EACH INCLUDING AN ANNULAR FLUX GAP AND A SOURCE OF MAGNETIC FLUX PROVIDED BY PERMANENT MAGNETIC CERAMIC MATERIAL AND CURRENT COLLECTING MEANS MOUNTING ON THE CIRCUIT-DEFINING MEANS BUT SPACED FROM SAID FLUX GAP, EACH SET COMPRISING IN THE OTHER SAID MEMBER TWO ANNULAR CONDUCTORS EACH EXTENDING THROUGH A SEPARATE ONE OF THE FLUX GAPS INTO SLIDING CONTACT WITH A RESPECTIVE ONE OF SAID CURRENT COLLECTING MEANS, MEANS ELECTRICALLY INTERCONNECTING ALL SAID CONDUCTORS AND CURRENT COLLECTING MEANS IN SERIES SO THAT A CURRENT PATH IS FORMED THROUGH SAID CONDUCTORS FOR THE FLOW OF CURRENT IN ONE DIRECTION THROUGH ONE FLUX GAP AND IN THE OPPOSITE DIRECTION THROUGH THE OTHER FLUX GAP CUTTING LINES OF FLUX IN EACH FLOW DIRECTION.
Claim 2
Dependent Claim
150 words
AN ELECTROMAGNETIC MACHINE COMPRISING A ROTOR MEMBER, A STATOR MEMBER, AT LEAST ONE SET OF ELEMENTS IN EACH SAID MEMBER, SAID SET COMPRISING IN ONE SAID MEMBER MEANS DEFINING TWO MAGNETIC CIRCUITS EACH INCLUDING AN ANNULAR FLUX GAP AND A SOURCE OF MAGNETIC FLUX PROVIDED BY PERMANENT MAGNETIC CERAMIC MATERIAL AND CURRENT COLLECTING MEANS MOUNTING ON THE CIRCUIT-DEFINING MEANS BUT SPACED FROM SAID FLUX GAP, EACH SET COMPRISING IN THE OTHER SAID MEMBER TWO ANNULAR CONDUCTORS EACH EXTENDING THROUGH A SEPARATE ONE OF THE FLUX GAPS INTO SLIDING CONTACT WITH A RESPECTIVE ONE OF SAID CURRENT COLLECTING MEANS, MEANS ELECTRICALLY INTERCONNECTING ALL SAID CONDUCTORS AND CURRENT COLLECTING MEANS IN SERIES SO THAT A CURRENT PATH IS FORMED THROUGH SAID CONDUCTORS FOR THE FLOW OF CURRENT IN ONE DIRECTION THROUGH ONE FLUX GAP AND IN THE OPPOSITE DIRECTION THROUGH THE OTHER FLUX GAP CUTTING LINES OF FLUX IN EACH FLOW DIRECTION.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |