Self adjusting device for a disc brake
US4167989A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1978 |
| Grant date | Sep 18, 1979 |
| Priority date | — |
| Expiry date | Mar 24, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/26
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A disc brake including a hydraulic actuator and a mechanical actuator is disclosed. The hydraulic actuator comprises a piston and the mechanical actuator comprises a push rod adapted to engage said piston through a self adjusting device, said adjusting device including a nut received on a threaded rod associated to said push rod, a thrust bearing capable to rotate said nut relative to said push rod on movement of said piston in a brake applying direction, and a clutch spring adapted to prevent rotation of the nut in the opposite direction. The thrust bearing comprises a cage which cooperates with the piston through a circumferential lost-motion connection adapted to limit rotation of said nut relative to said threaded rod to a predetermined angle on each hydraulic brake application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.