Fan blade support ring

摘要

A cooling fan and hub support for a vehicle with reversible blades is disclosed. The fan has a hub support comprising an outer ring having inwardly extending projections and an inwardly directed flange. Each blade has a stem received in a hole in one of the projections. An inner retaining ring which has outwardly extending projections is supported concentric with the outer ring. A helical spring is received in each of the projections and extends into a blind hole in each stem and the inner end of the spring rests on a retaining ring. The outer ring has spaced holes for attaching it to an engine shaft. The retaining ring has convolutions which curve outwardly around each of the spaced holes and have an arcuate circumferential part that supports each inner end of a spring.