Patent ID: 9719370
Date: 2017-08-01
CPC Classifications: F01D,F02C,F02K,F05D,Y02T

Claim:
1. A linkage system comprising: a first torque tube component having a cavity which defines a cavity axis, said first torque tube component defines a set of arms which define a pivot axis; a second torque tube component mounted with respect to said first torque tube component; a lever arm that defines an assembly flat, said lever arm movably mounted between said set of arms; a connection mounted along said pivot axis to pivotably mount said lever arm to said first torque tube component, said pivot axis transverse to said cavity axis; a bias member within said cavity; a piston biased by said bias member along said cavity axis toward said pivot axis to abut said lever arm, said lever arm pivotable between an operational angular position and a non-operating angular position about said pivot axis, said operational angular position locates said piston off said assembly flat so as to preload said piston to provide a radial load along said cavity axis toward said pivot axis to close radial clearances of said connection, said non-operational angular position locates said piston to abut said assembly flat such that said piston is under minimal load; and further comprising an actuator mounted to said first torque tube component to selectively rotate said first torque tube component with respect to said second torque tube component; wherein said first torque tube component is indirectly mounted to said actuator via said second torque tube component.