Patent US2922734A successfully refreshed from Google Patents.
US2922734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of electrical windings
Assignee: General Electric Co
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Filing: 1956-04-13
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Granted: 1960-01-26
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Leo S Kohn
- 👤 Walter L Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:55
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF MOLDING AN ELONGATED ELECTRICAL WINDING HAVING INSULATION COMPRISING A THERMOSETTING MATERIAL, WHICH METHOD COMPRISES ENCLOSING SAID WINDING IN A SEALED BAG OF RESINOUS MATERIAL WHICH IS PREVIOUS TO VAPOR AND IMPERVIOUS TO LIQUID, ENCLOSING SAID BAG IN A POROUS CONFINING COVERING, PLACING SAID WINDING IN A CHAMBER, CREATING A VACUUM IN SAID CHAMBER TO EVACUATE RESIDUAL VAPOR FROM WITHIN SAID WINDING THROUGH THE WALLS OF SAID BAG, RELIEVING SAID VACUUM, INTRODUCING A LIQUID INTO SAID CHAMBER AND HEATING AND APPLYING PRESSURE TO SAID LIQUID TO CURE THE THERMOSETTING RESIN IN SAID WINDING, REMOVING SAID WINDING FROM SAID LIQUID AND REMOVING SAID POROUS COVERING AND BAG.
Claim 2
Independent Claim
108 words
THE METHOD OF MOLDING AN ELONGATED ELECTRICAL WINDING HAVING INSULATION COMPRISING A THERMOSETTING MATERIAL, WHICH METHOD COMPRISES ENCLOSING SAID WINDING IN A SEALED BAG OF RESINOUS MATERIAL WHICH IS PREVIOUS TO VAPOR AND IMPERVIOUS TO LIQUID, ENCLOSING SAID BAG IN A POROUS CONFINING COVERING, PLACING SAID WINDING IN A CHAMBER, CREATING A VACUUM IN SAID CHAMBER TO EVACUATE RESIDUAL VAPOR FROM WITHIN SAID WINDING THROUGH THE WALLS OF SAID BAG, RELIEVING SAID VACUUM, INTRODUCING A LIQUID INTO SAID CHAMBER AND HEATING AND APPLYING PRESSURE TO SAID LIQUID TO CURE THE THERMOSETTING RESIN IN SAID WINDING, REMOVING SAID WINDING FROM SAID LIQUID AND REMOVING SAID POROUS COVERING AND BAG.
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) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |