Clearance sensing brake adjuster
US4088206A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1977 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Mar 31, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic clearance adjuster for a cam actuated vehicle brake. The adjuster is disposed in a pivotal lever and includes a worm and worm gear, an adjusting mechanism for effecting a clearance decreasing rotation of the worm during the brake apply stroke and a clearance increasing rotation of the worm during the brake release stroke, a two-way torque limiting ratchet clutch which slips to prevent rotation of the worm by the adjusting mechanism when the shoes are in contact with the drum, and a roller clutch which allows a predetermined amount of clearance increasing rotation of the worm by the adjusting mechanism during the brake release stroke and then locks up and causes slippage of the torque limiting clutch to prevent further clearance increasing rotation of the worm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.