Patent US3133217A successfully refreshed from Google Patents.
US3133217A
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Composite laminated mica mat-mica flake commutator cones
Assignee: General Electric Co
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Filing: 1961-07-31
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Granted: 1964-05-12
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Harry C Wohlferth
- 👤 Donald C Stavely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:27
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011; Y10T428/00; Y10T428/25; Y10T428/251
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A THERMOSET RESIN IMPREGNATED COMMUTATOR CONE COMPRISING TWO LAYERS OF MICA FLAKE LAMINATE HAVING THEREBETWEEN A LAYER OF MICA MAT LAMINATE, EACH LAYER OF LAMINATE CONSISTING OF A PLURALITY OF BUTT-JOINED SEGMENTS, SUCH SEGMENTS BEING SO ARRANGED THAT THE JOINTS IN ANY ONE LAYER ARE OFFSET FROM THE JOINTS IN THE ADJOINING LAYER.
Claim 2
Dependent Claim
53 words
A THERMOSET RESIN IMPREGNATED COMMUTATOR CONE COMPRISING TWO LAYERS OF MICA FLAKE LAMINATE HAVING THEREBETWEEN A LAYER OF MICA MAT LAMINATE, EACH LAYER OF LAMINATE CONSISTING OF A PLURALITY OF BUTT-JOINED SEGMENTS, SUCH SEGMENTS BEING SO ARRANGED THAT THE JOINTS IN ANY ONE LAYER ARE OFFSET FROM THE JOINTS IN THE ADJOINING LAYER.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |