Brake booster for automotive vehicles
US4450688A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1981 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Jun 3, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/565
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake booster for automotive vehicles comprises a low-pressure casing sealingly subdivided into a low-pressure chamber and a working chamber by an axially movable wall. The two transverse end walls of the low-pressure casing are interconnected by a central reinforcement tube integrally formed with a master cylinder. The actuating piston of the master cylinder is connected to a guide piston which is guided in the reinforcement tube and which receives a rubber-elastic reaction disc in an end thereof remote from the master cylinder. A control valve casing is axially movable in the reinforcement tube, bears axially against the reaction disc and is connected to the movable wall by radial ribs extending radially through longitudinal slots in the reinforcement tube. The radial ribs are connected to a ring which encompasses the reinforcement tube and which is secured in a bowl-shaped hub member of the movable wall. Air channels extend through the radial ribs to connect a control valve in the control valve casing to the low-pressure chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.