LINKAGE APPARATUS HAVING A LOW PROFILE ASYMMETRICAL HEAD

摘要

A high-cycle, short range-of-motion linkage apparatus is provided for actuating a positioning device. The linkage apparatus includes a pivot member (26) having a head portion configured to receive by plastic deformation a bearing assembly (10) therein. The head portion defines a bore therein having a substantially cylindrical inner surface that defines an inner diameter having a first center point (XI). A stem (30) having a central axis extends from the pivot member along the central axis in a first direction. The head portion further defines a truncated arcuate (427A-427D) outer surface (427), a portion of which defines a radius of curvature (R1-R3) and a second center point (X2). The second center point is offset from the first center point in the first direction and a distance D3 between the first center point and the second center point, measured along the central axis, is in the range of up to about 33% of the radius of curvature (R1-R3).