Michael D Garmon

US Patent:

20190326791, Oct 24, 2019

Filed:

Apr 19, 2018

Appl. No.:

15/957029

Inventors:

- Orlando FL, US
Mark Roberts - Wentzville MO, US
Grant Hennessey - Tega Cay SC, US
Alan Fortner - Mint Hill NC, US
Brent Mazingo - Charlotte NC, US
Randy Edward Whitener - Oviedo FL, US
Michael D. Garmon - Orlando FL, US

International Classification:

H02K 3/24
H02K 1/26
H02K 3/16
H02K 3/487
H02K 15/00

Abstract:

An assembly and a method for preventing an axial migration of a spring in a generator rotor are presented. The assembly includes a step pin radially disposed through an amortisseur and inserted into a spring of the generator rotor. The step pin is arranged axially apart from an adjacent radial vent passage and radially extends through the spring into a slot clearance between the spring and a creepage. The amortisseur includes a counter bore to retain a pin head and a pin shoulder. The spring includes a pin hole for a pin body extending therethrough. Diameters of the counter bore and the pin hole are smaller than diameters of amortisseur radial vent aperture and spring radial vent aperture. The step pin prevents an axial migration of the spring in rotor slots.