North American Philips Corporation

George B Soden

Elmer W Madsen

Hasit H Parikh

Gerald J Miller

Richard J Kavanaugh

A motor having two inner field cups in which the stator coils are placed, and outer cups which fit over the inner cups. The coil lead wires pass out through U-shaped openings in the inner and outer field cups, and are protected by an elongated grommet having first and second wire protecting portions which fit in respective openings. These portions are generally U-shaped when not constrained by external forces and are joined by an elongated center section. The grommet is manufactured of a flexible material to permit deformation of the legs of these portions upon pressing of the outer cups into place, to close around the wires.

Grommet unit and motor having such a unit

An electric motor has a stator construction which includes identical facing cup shaped members having a circumferential surface which includes a plurality of tabs and recesses. The tabs of one cup shaped member are dimensioned and configured for an engagement with the recesses of the other cup shaped member to positively position axially and radially each cup shaped member relative to the other. In one form the tabs may have a negative taper such that the base extremity of the tab has a smaller width than the other extremity of the tab. The negative taper produces a more pronounced interference fit and causes the cups to snap together without the necessity for cementing, welding, or other metal joining process. Each cup in one form is also provided at a plurality of angularly spaced recesses for receiving two identical generally planar plates having cooperating tabs and upstanding pole pieces. The recesses in one form extend along the circumferential surfaces to the tabs.

Electric motor with novel stator construction

A gear train includes a plurality of gears mounted for cooperation. Two of the gears are provided with at least one projection from the side of the gear in a direction generally parallel to the axis thereof. In operation the projections on the gears interfere at a predetermined angular position to limit movement of the gear train.

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Wolcott, CT, United States of America

George B Soden