Patent ID: 11933227
Assignee: UNISON INDUSTRIES, LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. An air starter comprising:
a housing defining an interior having a primary inlet and a primary outlet to define a primary air flow path from the primary inlet to the primary outlet;
a turbine located in the interior and including a rotor, with a plurality of circumferentially spaced blades, and a drive shaft extending from the rotor;
a gear box located in the interior and including a gear train and an output shaft coupled to the gear train;
a spline connection rotatably coupling the drive shaft and the output shaft;
a forward pilot guide comprising a first forward pilot element provided on the drive shaft and a second forward pilot element provided on the output shaft, wherein the first forward pilot element axially overlaps, at least in part, the second forward pilot element; and
a rear pilot guide, axially spaced from the forward pilot guide, and comprising a first rear pilot element provided on the drive shaft and a second rear pilot element provided on the output shaft, wherein the first rear pilot element axially overlaps, at least in part, the second rear pilot element.