US3225269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: Individual
•
Filing: 1961-10-04
•
Granted: 1965-12-21
•
Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Willis G Worcester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:49
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H02; H02K; H02K3/00; H02K3/04; H02K3/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
AN ELONGATED SOLENOID COMPRISING A CENTRAL SUPPORT; A SERIES OF COILS, DISPOSED IN AXIAL RELATIONSHIP ALONG SAID SUPPORT, THE END OF EACH COIL CORRESPNDING IN CONTOUR TO THE END OF EACH ADJACENT COIL AND EACH SAID COIL INCLUDING A CENTER, ALTERNATING LAYERS OF THIN METAL FOIL AND INSULATION EXTENDING IN SPIRAL RELATION ABOUT SAID CENTER AND INSULATING MATERIAL AT EACH END OF SAID COIL; A SEPARATE ELECTRICAL CONNECTION TO EACH OF AN INNER FOIL TURN AND AN OUTER FOIL TURN OF EACH SAID COIL; AND A SERIES OF HEAT CONDUCTING PLATES, EACH EXTENDING RADIALLY BETWEEN THE ENDS OF TWO ADJACENT COILS AND OUTWARDLY BEYOND SAID COILS, THE NUMBER OF SUCH PLATES BEING SUCH THAT AT LEAST ONE END TO AT LEAST EACH INTERMEDIATE COIL ABUTS ONE OF SAID HEAT CONDUCTING PLATES.
Claim 2
Dependent Claim
131 words
AN ELONGATED SOLENOID COMPRISING A CENTRAL SUPPORT; A SERIES OF COILS, DISPOSED IN AXIAL RELATIONSHIP ALONG SAID SUPPORT, THE END OF EACH COIL CORRESPNDING IN CONTOUR TO THE END OF EACH ADJACENT COIL AND EACH SAID COIL INCLUDING A CENTER, ALTERNATING LAYERS OF THIN METAL FOIL AND INSULATION EXTENDING IN SPIRAL RELATION ABOUT SAID CENTER AND INSULATING MATERIAL AT EACH END OF SAID COIL; A SEPARATE ELECTRICAL CONNECTION TO EACH OF AN INNER FOIL TURN AND AN OUTER FOIL TURN OF EACH SAID COIL; AND A SERIES OF HEAT CONDUCTING PLATES, EACH EXTENDING RADIALLY BETWEEN THE ENDS OF TWO ADJACENT COILS AND OUTWARDLY BEYOND SAID COILS, THE NUMBER OF SUCH PLATES BEING SUCH THAT AT LEAST ONE END TO AT LEAST EACH INTERMEDIATE COIL ABUTS ONE OF SAID HEAT CONDUCTING PLATES.
References Cited (Backward Citations)
US3113374A
Cited
US2850707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |