Patent · US Expired

Vacuum-operated brake power booster having diaphragm edge bead retention member

US4729287A · kind A · utility

8Cited by

7References

8Claims

0Family size

Assignee

Alfred Teves GmbH · DE

Inventors

Peter Boehm · Frankfurt am Main, DE
Wilfried Wagner · Hamburg, DE
Gilbert Bischoff · Hattersheim, DE
Karl Breitwieser · Reinheim, DE

Key dates

Filing date	Oct 10, 1986
Grant date	Mar 8, 1988
Priority date	—
Expiry date	Oct 10, 2006

Classification

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

Abstract

A vacuum operated brake power booster including a retaining member for securing the edge bead of a moveable wall diaphragm of the booster to the booster control valve is disclosed. The booster includes a casing subdivided into two chambers by a moveable wall having a diaphragm which has an internal edge bead disposed in an annular groove in the control valve housing of the booster. An annular retention ring surrounds the bead of the diaphragm to the outside of the bead and radially retains the edge bead within the control valve housing groove.

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