Force transmission device slideably mounted to drum brake shoe
US5590747A · kind A · utility
Inventors
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/68
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drum brake comprising a support plate with first and second shoes mounted thereon. Each shoe includes a web and a rim with a friction material being secured to the rim. A hydraulic actuation device acts on a first end of each web of the first and second shoes to move the friction material on the rims into engagement with a drum to effect a brake application. A spacer located in the vicinity of the hydraulic actuation device acts on the web of each shoe to establish the distance between the first and second shoes. Each web has a second end which engages a bearing component secured to the support plate. A mechanical actuation device has a first link connected to the web of the first shoe and a second link connected to a force transmission device. The second link is connected through a pin and slit arrangement with the web on the second shoe such that a force applied to the first link causes the second link to slide in the slits to bring the second shoe into engagement with the drum while at the same time acting on the spacer to transmit a force to move the first shoe into engagement with the drum and effect a brake application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.