Patent US3339097A successfully refreshed from Google Patents.
US3339097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bobbin and pole construction
Assignee: Eastman Manufacturing Co Inc
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Filing: 1965-08-10
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Granted: 1967-08-29
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Expires: 1985-08-10
Abstract
No abstract record available.
Inventors
- 👤 Richard M Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:02
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/52; H02K3/521; H02K3/522; H02K2203/00; H02K2203/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN AN ELECTROMAGNETIC DEVICE THE COMBINATION COMPRISING A CORE OF MAGNETIC MATERIAL INCLUDING A POLE HAVING A POLE FACE AND AT LEAST ONE SIDE SURFACE EXTENDING FOR SOME DISTANCE GENERALLY NORMAL TO SAID POLE FACE AND INCLUDING AT LEAST ONE RECESS IN SAID SIDE SURFACE, AND A BOBBIN HAVING A TUBULAR PORTION RECEIVED ON SAID POLE AND ALSO HAVING AT LEAST ONE LOCKING ELEMENT EXTENDING INWARDLY INTO SAID POLE RECESS TO RETRAIN SAID BOBBIN AGAINST AXIAL MOVEMENT RELATIVE TTO SAID POLE, SAID BOBBIN IN THE ABSENCE OF A COIL WINDING THEREON BEING DEFORMABLE TO DISPLACE SAID LOCKING ELEMENT OUTWARDLY FROM SAID POLE BEYOND SAID RECESS TO PERMIT ITS ASSEMBLY THEREON.
Claim 2
Dependent Claim
110 words
IN AN ELECTROMAGNETIC DEVICE THE COMBINATION COMPRISING A CORE OF MAGNETIC MATERIAL INCLUDING A POLE HAVING A POLE FACE AND AT LEAST ONE SIDE SURFACE EXTENDING FOR SOME DISTANCE GENERALLY NORMAL TO SAID POLE FACE AND INCLUDING AT LEAST ONE RECESS IN SAID SIDE SURFACE, AND A BOBBIN HAVING A TUBULAR PORTION RECEIVED ON SAID POLE AND ALSO HAVING AT LEAST ONE LOCKING ELEMENT EXTENDING INWARDLY INTO SAID POLE RECESS TO RETRAIN SAID BOBBIN AGAINST AXIAL MOVEMENT RELATIVE TTO SAID POLE, SAID BOBBIN IN THE ABSENCE OF A COIL WINDING THEREON BEING DEFORMABLE TO DISPLACE SAID LOCKING ELEMENT OUTWARDLY FROM SAID POLE BEYOND SAID RECESS TO PERMIT ITS ASSEMBLY THEREON.
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |