Spreading type disc brakes for vehicles
US4508198A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1983 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Apr 29, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/68
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a disc brake the application of the brake is initiated by angular movement of at least one pressure plate with respect to a reaction member to cause the pressure plate to move axially into engagement with a friction disc which, in turn, is urged into engagement with a surface in a stationary housing. The angular movement is effected hydraulically by an actuator comprising a piston working in a bore of a cylinder, the axis of which is substantially at right angles to that of the brake. The piston acts through a part-spherical rocking thrust coupling associated with a pull-rod passing through the actuator with a substantial clearance, the inner end of the pull-rod being pivotally coupled to a lug on the pressure plate, and the outer end being adapted for connection to a hand lever by which the pull-rod can be moved in a brake-applying direction. A thrust member is disposed between the piston and the spherical rocking coupling and is engagable with a thrust transmitting face on the piston for sliding movement in a transverse direction with respect to the axis of the cylinder to accommodate angular movement of the pull-rod when the brake is applied. The thrust member and the couplin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.