Shift lever vibration isolator

Details Shift lever vibration isolator Shift lever vibration isolator

2006-04-25

2006-04-25

Ridley, Richard W. (Department: 3682)

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

C074S469000, C074S523000, C074S543000, C074S573100, C403S221000, C403S225000

Reexamination Certificate

active

07032473

ABSTRACT:
A two-stage, bi-directional shift lever vibration isolator. A shift lever has a sleeve whereinside is a lever vibration isolator which includes a damping body having an axial bore and an outer surface characterized by an hour-glass cross-section composed of convex and concave surfaces; a transmission shift shaft attachment housing located in the bore; an upper washer connected to the housing and abutting an upper end of the damping body; and a lower washer connected to the housing and abutting a lower end of the damping body. The upper and lower washers are sized to provide a predetermined perimeter separation with respect to the sleeve. The hour-glass cross-section of the damping body provides bi-directional natural frequency of vibration and stiffness. The perimeter clearance of the washers provides a two-stage stiffness determined by when the damping body has undergone sufficient shear force that one or both of the upper and lower washers contact the sleeve, whereupon stiffness in the direction of the applied force is very high.

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