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US 5,331,240 AGranted
Field assembly of electric motors
AssigneeMakita Corporation
InventorKohki Hyodo
Life of this patent
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AssigneeMakita Corporation
InventorKohki Hyodo
Estimating the term…
The present invention provides an improved field assembly of an electric motor which is free from broken wires or short circuits when being incorporated in a power-driven tool. The field assembly of the invention includes a metallic core formed of a stack of annular laminations around a cavity and having an upper end and a lower end, and a terminal plate composed of an insulating material and mounted on the upper end of the core. The terminal plate includes a plurality of first terminal supporting structures each disposed in the vicinity of a first or starting end of a coil winding for supporting and retaining an end of a coil wire extending from the coil winding; and a plurality of second terminal supporting structures each disposed in the vicinity of a second or terminal end of the coil winding for supporting and retaining an end of the coil wire. A first or starting end of the coil wire is wound outside the coil winding to be received by the second terminal supporting structures while a second or terminal end of the coil wire is wound outside the coil winding to be received by the first terminal supporting structures.
A field assembly of an electric motor comprising a metallic core formed of a stack of annular laminations around a cavity and having an upper end and a lower end, and a terminal plate composed of an insulating material and mounted on said upper end of said core,
In a field assembly of an electric motor having a metallic core formed of a stack of annular laminations around a cavity and having an upper end and a lower end, and a terminal plate of an insulating material and mounted on said upper end of said core, the improvement comprising
Dependencies are inferred from the claim text.