Actuating and adjusting mechanism for disc brakes
US4064973A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Nov 18, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/66
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A mechanically actuated disc brake includes a wedge actuator which urges an extensible, force transmitting member toward the disc brake rotor in order to effect a brake application. A ratchet mechanism is carried by the extensible member and by a piston slidably mounted within the brake housing. The ratchet mechanism is responsive to movement of the extensible member toward the rotor in access of a predetermined amount in order to effect elongation of the extensible member to limit retraction in the piston, so that retraction of the friction elements is similarly limited. The extensible member also cooperates with a manual adjustment mechanism which may be used to manually adjust the brakes or to "back-off" the extensible member to permit movement of the friction elements away from the disc in excess of the predetermined amount when the friction elements must be removed when the brake is serviced. The wedge actuating mechanism includes a pair of wedges and a reciprocable push rod which is thrust between the wedges to urge the latter apart when a brake application is effected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.