US4059898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a small electric motor
Assignee: Individual
•
Filing: 1976-09-20
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Granted: 1977-11-29
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Expires: 1996-09-20
Abstract
Abstract Concentricity between the rotor and rotor shaft of a small motor is attained by means of a plastic, toothed hub on the shaft press fitted into the rotor; any eccentricity is removed by shearing the teeth.
Inventors
- 👤 Gerald L. Adair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:42
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/2726; H02K1/2733; H02K15/00; H02K15/02; H02K15/03; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T29/49826; Y10T29/49833; Y10T29/49945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A method of assembling a cylindrical rotor and a metal rotor shaft into a rotor assembly for a subfractional dynamoelectric machine comprising the following steps: A. presenting to one end of the rotor a circular hub molded substantially concentrically to one end of the shaft, said hub having a toothed periphery of deformable and shearable plastic material softer than the rotor, and the outer diameter of the hub being larger than the inner diameter of the rotor; B. press-fitting the hub into the inner diameter of the rotor, while maintaining the outer diameters of the shaft and the rotor in concentric relation, the teeth of the hub distorting during press fitting to compensate for any eccentricity between the peripheral ends of the teeth and the inner diameter of the rotor.
Claim 2
Independent Claim
130 words
A method of assembling a cylindrical rotor and a metal rotor shaft into a rotor assembly for a subfractional dynamoelectric machine comprising the following steps: A. presenting to one end of the rotor a circular hub molded substantially concentrically to one end of the shaft, said hub having a toothed periphery of deformable and shearable plastic material softer than the rotor, and the outer diameter of the hub being larger than the inner diameter of the rotor; B. press-fitting the hub into the inner diameter of the rotor, while maintaining the outer diameters of the shaft and the rotor in concentric relation, the teeth of the hub distorting during press fitting to compensate for any eccentricity between the peripheral ends of the teeth and the inner diameter of the rotor.
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) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |