Patent · US Expired

Vacuum brake booster for automotive vehicles

US4970940A · kind A · utility

7Cited by

9References

10Claims

0Family size

Assignee

Alfred Teves GmbH · DE

Inventors

Peter Boehm · Frankfurt am Main, DE
Wilfried Wagner · Hamburg, DE
Kai-Michael Graichen · Langen, DE
Ralf Jakobi · Flörsheim, DE

Key dates

Filing date	Oct 22, 1988
Grant date	Nov 20, 1990
Priority date	—
Expiry date	Oct 22, 2008

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T13/569
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A vacuum brake booster in which the guiding sleeve (14) for the push rod (29) has an annular ring which defines a cylindrical guiding surface (22) and is guided, in axial movements of the guiding sleeve, by a guide bore in the housing (10) of the control valve.

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