Automatic slack adjuster
US11209062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2019 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Apr 26, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D65/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A clearance sensing vehicle brake slack adjuster includes a housing coupled to a brake actuator and supporting a driving worm wheel engaging the brake cam shaft and a driving worm screw having a threaded portion meshed with the driving worm wheel and transferring a brake actuating force, imparted by the brake actuator to the housing, to the driving worm wheel and cam shaft. A wear adjustment mechanism for the adjuster includes a control worm wheel and a clutch ring disposed about the driving worm screw and a wrap spring engaging surfaces of the control worm wheel and the clutch ring. The control worm wheel is in mesh with a control worm screw. The clutch ring is disposed on a side of the control worm wheel opposite the threaded portion of the driving worm screw and includes teeth engaging corresponding teeth on the driving worm screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.