Patent ID: 8015996

Claim:
An air valve assembly for a gas turbine engine comprising: a first valving element; a second valving element rotatable about a first axis relative to the first valving element to control a flow of air through the first and second elements; an actuator; and a linkage coupling the actuator to the second valving element to rotate the second valving element between first and second orientations, and comprising: a spindle having: a first portion coupled to the actuator to rotate the spindle about a second axis; and a second portion; and a spherical bearing coupling the second portion to the second valving element, wherein: the spherical bearing has a bearing axis; the spherical bearing is mounted to one of the spindle second portion and the second valving element by a clevis pin; the spherical bearing has a non-zero range of movement along the clevis pin; and a follower on the other of the spindle second portion and the second valving element is slidingly engaging the spherical bearing so that rotation of the spindle shifts the bearing axis longitudinally relative to said other of the spindle second portion and the second valving element.