Patent US2723933A successfully refreshed from Google Patents.
US2723933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making preformed insulation for high voltage transformer
Assignee: Individual
•
Filing: 1950-01-31
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Granted: 1955-11-15
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Expires: 1970-01-31
Abstract
No abstract record available.
Inventors
- 👤 Hans D Isenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:30
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/324; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/125; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF MANUFACTURING INSULATION FOR ENCASING THE EDGES OF COIL SECTIONS OF HIGH VOLTAGE TRANSFORMERS WHICH COMPRISES EXTRUDING FROM A PLASTIC INSULATING MATERIAL A CONTINUOUS HOLLOW STRIP OF RECTANGULAR CONFIGURATION, CUTTING SAID HOLLOW STRIP LONGITUDINALLY INTO A PLURALITY OF STRIPS HAVING AT LEAST TWO WALL PORTIONS DISPOSED AT AN ANGLE WITH RESPECT TO ONE ANOTHER, WINDING SAID STRIPS HAVING AT LEAST TWO WALL PORTIONS TO THAT WHICH SAID INSULATION WILL ASSUME WHEN APPLIED TO SAID COIL SECTIONS, COOLING SAID PLASTIC MATERIAL AFTER WINDING ON SAID SPOOL TO CAUSE SETTING THEREOF, AND APPLYING SAID INSULATION AS CONTINUOUS STRIPS TO THE EDGES OF SAID COIL SECTIONS OF HIGH VOLTAGE TRANSFORMER WINDINGS.
Claim 2
Independent Claim
110 words
THE METHOD OF MANUFACTURING INSULATION FOR ENCASING THE EDGES OF COIL SECTIONS OF HIGH VOLTAGE TRANSFORMERS WHICH COMPRISES EXTRUDING FROM A PLASTIC INSULATING MATERIAL A CONTINUOUS HOLLOW STRIP OF RECTANGULAR CONFIGURATION, CUTTING SAID HOLLOW STRIP LONGITUDINALLY INTO A PLURALITY OF STRIPS HAVING AT LEAST TWO WALL PORTIONS DISPOSED AT AN ANGLE WITH RESPECT TO ONE ANOTHER, WINDING SAID STRIPS HAVING AT LEAST TWO WALL PORTIONS TO THAT WHICH SAID INSULATION WILL ASSUME WHEN APPLIED TO SAID COIL SECTIONS, COOLING SAID PLASTIC MATERIAL AFTER WINDING ON SAID SPOOL TO CAUSE SETTING THEREOF, AND APPLYING SAID INSULATION AS CONTINUOUS STRIPS TO THE EDGES OF SAID COIL SECTIONS OF HIGH VOLTAGE TRANSFORMER WINDINGS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |