Drum brake operating in simplex mode and/or in servo-dual mode
US9863488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2014 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Nov 10, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/68
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A motor vehicle drum brake (10) includes: two braking segments (18A, 18B); an anchoring element (28) including two bearing surfaces (32A, 32B) of two second ends (24) of the braking segments (18A, 18B); a wheel cylinder (34) which, in a first “simplex” operating mode, is suitable for transversally separating the adjacent first ends (22) of the segments (18A, 18B); the anchoring element (28) including: a fixed body (42) wherein two sliding pistons (50A, 50B) each carry a bearing surface (32A, 32B); and elements (44) for separating the pistons (50A, 50B) between an anchoring position wherein they abut against the body (42), and a sliding position wherein the pistons (32A, 32B) are separated to allow the sliding thereof during operation in so-called “servo-dual” mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.