Isolator for alternator pulley

Details Isolator for alternator pulley Isolator for alternator pulley

2007-04-24

2007-04-24

Johnson, Vicky A. (Department: 3682)

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Including separate belt on each of coaxial pulleys...

Reexamination Certificate

active

11495410

ABSTRACT:
A decoupler for an alternator pulley in a serpentine drive system has a resilient, helical spring member that couples the alternator pulley with a hub structure through a spring retaining member. A bushing is disposed between the spring retaining member and the hub structure to facilitate sliding engagement therebetween. An annular sleeve member is disposed between the spring member and the alternator pulley to facilitate sliding engagement therebetween. The spring member is connected at one end thereof to the hub structure and connected at an opposite end thereof to the spring retaining member. The resilient spring member transmits the driven rotational movements of the alternator pulley by the serpentine belt to the hub structure such that the alternator shaft is rotated in the same direction as the alternator pulley while being capable of instantaneous relative resilient movements in opposite directions with respect to the alternator pulley during the driven rotational movement.

REFERENCES:
patent: 4460076 (1984-07-01), Yamada
patent: 5139463 (1992-08-01), Bytzek et al.
patent: 5156573 (1992-10-01), Bytzek et al.
patent: 6083130 (2000-07-01), Mevissen et al.
patent: 6761656 (2004-07-01), King et al.
patent: 6923303 (2005-08-01), Liston et al.
patent: 7052420 (2006-05-01), King et al.
patent: 2004/0014540 (2004-01-01), Dell et al.
patent: WO 2004011818 (2004-02-01), None

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