Motor field assembly
November 5, 2010. 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 3873864 Method of manufacturing a housing for a small electrical machine Method for making an electric motor housing with integral pole Small motor stator with improved magnet mounting Double insulated motor including a magnet retainer Armature stator configuration for compound interaction/induction electric rotating machine Transmission apparatus having split-coil type coaxial coupler Casing for a small motor assembly Patent #: 5047679 InventorAssigneeApplicationNo. 608805 filed on 11/05/1990US Classes:310/154.09, Split housing/yoke310/46, Magnetic motors310/89Housings, windows or coversExaminersPrimary: Stephan, Steven L.Assistant: Nguyen, Matthew Attorney, Agent or FirmInternational ClassH02K 021/26AbstractA motor field assembly and method for constructing a permanent magnet motor wherein the shell is formed of relatively thick flat sheet stock as two rectangular portions and an elongated connecting portion. The rectangular portions are rolled into semi-cylindrical shapes and the connecting portion is bent at two places so that the two rectangular portions are in opposed parallel relationship to form a unitary cylindrical motor housing shell with a pair of diametrically opposed seams, the connecting portion forming an end wall of the motor housing. Annular permanent magnet segments are provided and mounted to the interior of the shell in spaced equiangular relation with a central portion of each segment of a pair of diametrically opposed segments spanning a respective seam. | |
