Dayton-phoenix Group, Inc.

Johnny D Yu

Joseph A Zahora

Bradley S Bryant

A heavy-duty stator core and coil assembly that can accommodate severe input voltage spiking and harmonics may include a coat of varnish applied to the stator core and coil assembly by steps of dipping the stator core and coil assembly end-first along a longitudinal axis into a first tank of liquid epoxy resin having a relatively low viscosity, baking the coating, inverting the stator core and coil assembly and applying a second coat of varnish in the same manner, then dipping the core and coil assembly into a second tank having a liquid epoxy resin of a relatively high viscosity, then baking the second coat.

Heavy duty stator core and coil assembly

Apparatus including a locomotive-radiator-cooling-fan tankhead assembly having a substantially-circular base plate and a substantially-circular outer ring. The base plate has a central longitudinal axis and a circumference. The outer ring is substantially coaxially aligned with the central longitudinal axis and is attached to the base plate proximate the circumference. The base plate has a substantially-planar first surface having a central recess substantially coaxially aligned with the central longitudinal axis and having circumferentially-separated, first and second peripheral recesses each radially spaced apart from the central recess and extending radially inward from proximate the circumference. The outer ring longitudinally extends beyond the first surface. The tankhead assembly is devoid of any gussets attached to the base plate and is devoid of any gussets attached to the outer ring.

Locomotive-radiator-cooling-fan tankhead assembly

An AC-induction-motor rotor lamination has a longitudinal axis and circumferentially spaced apart and closed rotor slots. Each rotor slot includes first through fifth corners, a straight slot base, straight first and second slot sides, and first and second curved sides. The slot base extends from the first corner to the second corner, the first slot side extends substantially radially inward from the second corner to the third corner, and the second slot side extends substantially radially inward from the first corner to the fourth corner. The first and second curved sides extend from a corresponding one of the third and fourth corners to the fifth corner. A rotor lamination having slot sides extending substantially radially outwardly from the second and first corners, and rotor laminations having open rotor slots (with slot sides extending substantially radially inward or outward) are also described.

AC-induction-motor rotor lamination having rotor slots

A receptacle assembly apparatus for electric power leads that includes a receptacle, a backshell, and a disk-shaped member clamped therebetween. The receptacle has a housing and a grommet having orifices formed therethrough to receive power leads and associated pins. The disk-shaped member is formed of a relatively hard dielectric material such as nylon and contains orifices therethrough, corresponding to orifices in the grommet, which receive the electric power leads and associated pins. The lead pins have annular ribs formed thereon such that the ribs are captured between a collar on the disk-shaped member and a protrusion on the grommet, thereby preventing relative rearward movement of the lead pins and associated leads.

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Centerville, OH, United States of America

Johnny D Yu