Drum brake with rack and pinion drive
US6119822A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Nov 30, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/24
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drum brake assembly as provided with a rack and pinion actuator. The rack and pinion actuator includes a pinion gear driving a pair of racks, with the racks driving the brake shoes into engagement with the brake drum. The pinion gear is provided with an adjustment thread which transmits rotation to an adjustment member. The adjustment member monitors the amount of rotation of the pinion gear during actuation, and a mechanism drives the adjustment member and the pinion gear back to its non-actuated position after completion of the braking cycle. The mechanism limits the amount of return movement of the pinion gear as necessary to provide adjustment of the brake stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.