Patent ID: 7757824

Claim:
An Automatic Brake Adjuster with a floating reference point with a one-way lock and clutch mechanism for adjusting the slack between a brake lining and a brake drum of a vehicular braking system comprising: a body connectable to a brake actuator at a first portion, a rotatable internally splined worm wheel in a second portion of said body for receiving an S shaped cam shaft, a clutch cum one-way lock mechanism comprising a rotatable worm shaft having serrations and secured perpendicular to worm wheel but meshing with the worm wheel, a one-way lock/clutch seat having serrations engaged with serrations of worm shaft and guided by a bearing retainer to form a clutch mechanism, a regulator worm wheel engageable by means of slots at the faces with a one-way lock sleeve having serrations and positioned on a thrust sleeve along with a one-way lock spring, and further mounted on hexagonal end of worm shaft such that said clutch mechanism and said one-way lock mechanism are on the worm shaft, the bearing retainer along with a thrust bearing retains the one-way lock/clutch seat through a thrust sleeve against a heavy compression spring, thereby isolating said regulator worm wheel and one-way lock sleeve for free movement, a retaining ring provided on said thrust sleeve cages, the worm shaft and the regulator worm wheel and the one-way lock/clutch seat for isolating clutch seat serrations from overriding on worm shaft clutch serrations, while clutch is in disengaged condition, wherein, said one-way lock mechanism and said clutch mechanism, are over the worm shaft, and wherein said one-way lock mechanism and said clutch mechanism are integrated as a single part in said one-way lock/clutch seat characterized in that the one-way lock spring is located on the thrust sleeve, and the retaining ring is provided on the thrust sleeve and cages the one-way lock sleeve, the one-way lock/clutch seat and the regulator worm wheel for isolating clutch seat serrations from overriding on the worm shaft clutch serrations while the clutch is in the disengaged condition.