Two-way valve for a brake booster
US3973593A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1974 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Dec 6, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86919
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A two-way valve for a brake booster functions first to interrupt a vacuum connection between two chambers when displaced by an actuating rod and second to permit atmosphere to enter into one of the two chambers to provide the booster action. In such known arrangements there is a disadvantage that the brake actuation requires considerable lost brake pedal travel. According to the present invention this disadvantage is overcome by arranging a valve body coaxial of and axially displaced on the actuating rod and by coupling the actuating rod to the valve body by means of a travel-transmission arrangement which provides for a larger displacement travel of the valve body relative to the travel of the actuating rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.