Patent ID: 8745875
Filing Date: 2014-06-10
Classification: F16B,F16C,Y10T

Abstract:
1. A retaining system for establishing and maintaining a desired degree of preload force relative to tapered roller bearings mounted on a threaded axle spindle having a predetermined pitch, comprising, in order closest to the bearings: an inner tabbed washer having a keyway tab and an outer face inscribed with radial reference lines to serve for incremental positioning of an inner adjustment nut; the inner adjustment nut; an intermediate interlock washer with a keyway tab, an external peripheral tab, and an outer face with one or more projections providing the first portion of a mechanical interlock with an outer retainer nut; the outer retainer nut having an inner face providing the second portion of the mechanical interlock; and wherein the second portion of the mechanical interlock includes a plurality of spaced-apart physical features related to the predetermined pitch of the spindle, such that tightening the outer retainer nut causes the second portion of the mechanical interlock to become trapped by the first portion of the mechanical interlock after sufficient axial inward movement of the outer retainer nut has introduced the needed amount of additional preload force to maintain engagement of the interlock portions.