US3373485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a rotor and shaft assembly
Assignee: General Electric Co
•
Filing: 1965-09-13
•
Granted: 1968-03-19
•
Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Ronald N Nelsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:25
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1672; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/49885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD OF FABRICATING AN ASSEMBLY THAT HAS A SHAFT AND ROTOR CORE, AND FORMING AN ADHERENT, HARDENED, FILM OF MAGNESIUM HYDROXIDE ON A PRESELECTED PORTION OF THE SHAFT HAVING FINISHED JOURNAL SURFACES FOR USE IN THE DYNAMOELECTRIC MACHINE COMPRISING THE STEPS: APPLYING A SOLUTION OF MAGNESIUM METHYLATE TO THE PRESELECTED PORTION OF SAID SHAFT; FORMING SAID SOLUTION INTO AN ADHERENT, HARDENED, FILM OF MAGNESIUM HYDROXIDE, AND ASSEMBLING THE SHAFT AND THE ROTOR CORE; AND MAINTAINING SAID FILM BELOW THE TEMPERATURE OF 350* CENTIGRADE AT WHICH MAGNESIUM OXIDE IS FORMED TO PROVIDE AN ADHERENT FILM FOR PROTECTING THE COVERED PORTIONS OF THE SHAFT AGAINST CORROSION.
Claim 2
Independent Claim
105 words
A METHOD OF FABRICATING AN ASSEMBLY THAT HAS A SHAFT AND ROTOR CORE, AND FORMING AN ADHERENT, HARDENED, FILM OF MAGNESIUM HYDROXIDE ON A PRESELECTED PORTION OF THE SHAFT HAVING FINISHED JOURNAL SURFACES FOR USE IN THE DYNAMOELECTRIC MACHINE COMPRISING THE STEPS: APPLYING A SOLUTION OF MAGNESIUM METHYLATE TO THE PRESELECTED PORTION OF SAID SHAFT; FORMING SAID SOLUTION INTO AN ADHERENT, HARDENED, FILM OF MAGNESIUM HYDROXIDE, AND ASSEMBLING THE SHAFT AND THE ROTOR CORE; AND MAINTAINING SAID FILM BELOW THE TEMPERATURE OF 350* CENTIGRADE AT WHICH MAGNESIUM OXIDE IS FORMED TO PROVIDE AN ADHERENT FILM FOR PROTECTING THE COVERED PORTIONS OF THE SHAFT AGAINST CORROSION.
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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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |