Patent · US Expired

Servo brake system

US4191020A · kind A · utility

7Cited by

8References

5Claims

0Family size

Assignee

Daimler-Benz AG · DE

Inventors

Hellmut Krohn · Eßlingen, DE
Werner Kruse · Schorndorf, DE
Reinhard Resch · Stuttgart, DE

Key dates

Filing date	Jul 7, 1977
Grant date	Mar 4, 1980
Priority date	—
Expiry date	Jul 7, 1997

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T13/12
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A servo brake system with at least two circuits, equipped with a tandem master cylinder, in which two working pistons are arranged coaxially one behind the other; a transmission shifting device thereby automatically shifts in case of failure of the servo installation to a larger pedal travel with a mechanically applied brake pressure that is reduced within permissive limits; the working piston of the actuating side thereby includes a bore coaxial to the other working piston, in which a plunger piston is guided which is actuatable by the input piston.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.