US3129495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor field unit and method of making it
Assignee: Individual
•
Filing: 1961-06-01
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Granted: 1964-04-21
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Expires: 1981-06-01
Abstract
No abstract record available.
Inventors
- 👤 Kohlhagen Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:58
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/14; H02K21/145; H02K2201/00; H02K2201/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
THE METHOD OF FORMING FROM A FLAT PLATE OF MAGNETIC STOCK A POLAR UNIT OF TWO INTEGRATED INNER AND SURROUNDING OUTER FIELD PLATES SPACED APART IN THE DIRECTION OF A ROTOR AXIS AND WITH THEIR RESPECTIVE OUTER AND INNER FIELD POLES COORDINATED WITH RESPECT TO SAID AXIS, WHICH COMPRISES, IN A CUTTING DIE DIVIDING AND SHAPING THE PLATE ABOUT A REFERENCE ROTOR AXIS THEREOF INTO FLAT INNER AND SURROUNDING OUTER BLANKS OF THE OUTLINES OF THE RESPECTIVE INNER AND OUTER FIELD PLATES AND WITH ONE BLANK ALSO HAVING SPACED ARMS EXTENDING TOWARD AND INTO THE OTHER BLANK AND BEING THEREWITHIN BLANKED FROM THE LATTER TO DEFINE CONFORMING SLOTS IN SAID OTHER BLANK; AND FORMING AND PERMANENTLY FIXING THE COORDINATION OF THEIR POLES, BY RELATIVELY DISPLACING IN A FORMING DIE THE BLANKS IN THE DIRECTION OF SAID REFERENCE AXIS AND ALSO DRAWING THE ARMS INTO COEXTENSION WITH AND FIRMLY JAMMING ENDS THEREOF IN THE CONFORMING SLOTS IN THE RESPECTIVE FIELD PLATE TO INTEGRATE BOTH FIELD PLATES, WHEREBY THE FIXED POLE COORDINATION IS ACCURATE WITHIN DIE TOLERANCE.
Claim 2
Independent Claim
175 words
THE METHOD OF FORMING FROM A FLAT PLATE OF MAGNETIC STOCK A POLAR UNIT OF TWO INTEGRATED INNER AND SURROUNDING OUTER FIELD PLATES SPACED APART IN THE DIRECTION OF A ROTOR AXIS AND WITH THEIR RESPECTIVE OUTER AND INNER FIELD POLES COORDINATED WITH RESPECT TO SAID AXIS, WHICH COMPRISES, IN A CUTTING DIE DIVIDING AND SHAPING THE PLATE ABOUT A REFERENCE ROTOR AXIS THEREOF INTO FLAT INNER AND SURROUNDING OUTER BLANKS OF THE OUTLINES OF THE RESPECTIVE INNER AND OUTER FIELD PLATES AND WITH ONE BLANK ALSO HAVING SPACED ARMS EXTENDING TOWARD AND INTO THE OTHER BLANK AND BEING THEREWITHIN BLANKED FROM THE LATTER TO DEFINE CONFORMING SLOTS IN SAID OTHER BLANK; AND FORMING AND PERMANENTLY FIXING THE COORDINATION OF THEIR POLES, BY RELATIVELY DISPLACING IN A FORMING DIE THE BLANKS IN THE DIRECTION OF SAID REFERENCE AXIS AND ALSO DRAWING THE ARMS INTO COEXTENSION WITH AND FIRMLY JAMMING ENDS THEREOF IN THE CONFORMING SLOTS IN THE RESPECTIVE FIELD PLATE TO INTEGRATE BOTH FIELD PLATES, WHEREBY THE FIXED POLE COORDINATION IS ACCURATE WITHIN DIE TOLERANCE.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |