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 Title: |
US3634707:
MOTOR
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| Country: |
US United States of America
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| Inventor: |
Tillner, Siegfried; Oldenburg, Federal Republic of Germany
Heilmann, Heinz; Oldenburg, Federal Republic of Germany
Ludemann, Joseph; Oldenburg, Federal Republic of Germany
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| Assignee: |
Licentia Patent-Verwaltungs-GmbH, Frankfurt am Main, Federal Republic of Germany
other patents from LICENTIA PATENT-VERWALTUNGS-GMBH (336500) (approx. 1,026)
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| Published / Filed: |
1972-01-11
/ 1969-12-04
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| Application Number: |
US1969000882194
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| IPC Code: |
Advanced:
H02K 17/10;
Core:
H02K 17/02;
IPC-7:
H02K 17/10;
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| U.S. Class: |
Current:
310/172;
310/269;
Original:
310/172;
310/269;
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| Field of Search: |
310/172,186,187,194,162,163,261,269,211,67
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| Priority Number: |
| 1968-12-05 |
DT19680P1812780 |
| 1968-12-05 |
DE1968000009931U |
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| Abstract: |
The electrical characteristics of a centrosymmetrical-shaded pole motor having salient poles and concentrated windings are improved by shaping the poles of the motor so that the angle enclosed between the pole axis and the neutral axis on the shaded pole side of the pole axis is less than that on the main pole side, the shaded pole arc is at most equal to one-fifth of the pole pitch, and the airgap adjacent to the pole has a nonuniform configuration such that the harmonics of the excitation field, and in particular, the third harmonic, are substantially eliminated, whereby the starting torque, the breakdown torque and the efficiency of the motor are improved.
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| Attorney, Agent or Firm: |
Spencer & Kaye ;
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| Primary / Asst. Examiners: |
Duggan, D. F.; Skudy, R.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Related Applications: |
| Application Number |
Filed |
Patent |
Pub. Date |
Title |
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| US1967000650298 | 1967-06-30 |
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1970-03-10
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