Patent US3436815A successfully refreshed from Google Patents.
US3436815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulation process for random wound coils
Assignee: General Electric Co
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Filing: 1966-09-22
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Granted: 1969-04-08
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Expires: 1986-09-22
Abstract
No abstract record available.
Inventors
- 👤 Marvin W Sheets
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:12
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
THE PROCESS OF FABRICATING A DYNAMOELECTRIC MACHINE STATOR COMPRISING: (A) PROVIDING A STATOR CORE HAVING A ROTOR-RECEIVING BORE THEREIN AND A PLURALITY OF AXIALLY EXTENDING OPEN SLOTS IN SAID CORE CIRCUMFERENTIALLY SPACED ABOUT SAID BORE; (B) RANDOM WINDING A PLURALITY OF COILS OF INSULATED MAGNET WIRE; (C) COMPLETELY WRAPPING SAID COILS WITH POROUS INSULATING TAPE; (D) POSITIONING SAID COILS IN CORRESPONDING ONES OF SAID SLOTS AND MAKING SUITABLE CONNECTIONS TO CONSTITUTE A MOTOR WINDING; (E) PREHEATING THE WOUND STATOR CORE TO EXPEL MOISTURE THEREFROM; (F) VACUUM-IMPREGNATING SAID WOUND STATOR CORE WITH A VISCOUS THERMOSETTABLE RESIN HAVING A FILLER THEREIN AND CONCOMITANTLY FILLING THE PORES IN SAID POROUS TAPE WITH THE FILLER IN SAID RESIN; AND (G) HEATING SAID WOUND STATOR CORE TO SET SAID RESIN AND CONCOMITANTLY RETAINING RESIN INSIDE SAID INDIVIDUAL COILS BY MEANS OF SAID TAPE WHILE DRAINING SUBSTANTIALLY ALL OF THE REMAINDER OF SAID RESIN FROM SAID WOUND STATOR CORE.
Claim 2
Dependent Claim
153 words
THE PROCESS OF FABRICATING A DYNAMOELECTRIC MACHINE STATOR COMPRISING: (A) PROVIDING A STATOR CORE HAVING A ROTOR-RECEIVING BORE THEREIN AND A PLURALITY OF AXIALLY EXTENDING OPEN SLOTS IN SAID CORE CIRCUMFERENTIALLY SPACED ABOUT SAID BORE; (B) RANDOM WINDING A PLURALITY OF COILS OF INSULATED MAGNET WIRE; (C) COMPLETELY WRAPPING SAID COILS WITH POROUS INSULATING TAPE; (D) POSITIONING SAID COILS IN CORRESPONDING ONES OF SAID SLOTS AND MAKING SUITABLE CONNECTIONS TO CONSTITUTE A MOTOR WINDING; (E) PREHEATING THE WOUND STATOR CORE TO EXPEL MOISTURE THEREFROM; (F) VACUUM-IMPREGNATING SAID WOUND STATOR CORE WITH A VISCOUS THERMOSETTABLE RESIN HAVING A FILLER THEREIN AND CONCOMITANTLY FILLING THE PORES IN SAID POROUS TAPE WITH THE FILLER IN SAID RESIN; AND (G) HEATING SAID WOUND STATOR CORE TO SET SAID RESIN AND CONCOMITANTLY RETAINING RESIN INSIDE SAID INDIVIDUAL COILS BY MEANS OF SAID TAPE WHILE DRAINING SUBSTANTIALLY ALL OF THE REMAINDER OF SAID RESIN FROM SAID WOUND STATOR CORE.
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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |