POLYMER SPRING CONTROLLED PULLEY ASSEMBLY FOR ROTARY DEVICES
A drive system for a rotary device, such as an automotive alternator compensates for and reduces the effect of sudden bidirectional rotational velocity variations of the pulley caused by sudden acceleration and deceleration of an internal combustion engine without using a one-way clutch. The drive s...
Saved in:
Main Authors | , , |
---|---|
Format | Patent |
Language | English |
Published |
07.10.2010
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A drive system for a rotary device, such as an automotive alternator compensates for and reduces the effect of sudden bidirectional rotational velocity variations of the pulley caused by sudden acceleration and deceleration of an internal combustion engine without using a one-way clutch. The drive system comprises a pulley comprising a tubular barrel having a plurality of radial projections extending inwardly from its inner surface, and a cylindrical hub that is journaled within the pulley and connected to the alternator shaft. The hub has a plurality of radial projections extending outwardly from its outer circumference which are interleaved between the pulley projections. A plurality of solid resilient polymer spring members are disposed in the cavity spaces between the projections. Upon sudden acceleration or deceleration of the pulley, it rotates angularly relative to the hub and shaft to resiliently compress the polymer spring members, which exert a counter restoring force to eliminate the relative angular rotation. |
---|---|
Bibliography: | Application Number: US20090420035 |