Electrical machine with a stator lamination of grain-oriented sheets
Patent 4672252 Issued on June 9, 1987. Estimated Expiration Date: 
June 9, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 9, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2046717 2433660 2774000 2792511 2968860 3809938 InventorAssigneeApplicationNo. 06/234575 filed on 02/13/1981US Classes:310/216, Core features310/259Core assemblyExaminersPrimary: Salce, Patrick R.Assistant: Rebsch, D. L. Attorney, Agent or FirmInternational ClassesH02K 19/16 (20060101)H02K 19/22 (20060101) H02K 17/42 (20060101) H02K 1/00 (20060101) H02K 1/02 (20060101) Foreign Application Priority Data1980-02-15 DEAbstractThe laminations of a laminated stator of a slowly running electrical machine having a high number of poles are composed of grain-oriented sheets, each of which has a preferential magnetic direction that extends substantially longitudinally along the teeth of that sheet. This permits the excitation current to be reduced, and, as a result, the air gap of the machine can be enlarged so that, on the whole, approximately the same excitation is required as for a laminated stator in which the laminations consist of normal, non-oriented sheets. As a result, the mechanical stability of the machine is increased. The invention is especially useful in asynchronous tube generators.Field of SearchDynamoelectric machine | |
