Patent · US Active

Ventilation device for a combined spring accumulator and operating brake cylinder

US8011483B2 · kind B2 · utility

3Cited by

33References

23Claims

0Family size

Assignee

WABCO GmbH · DE

Inventors

Oliver Brandt · Braunschweig, DE
Wilfried Matthias · Bad Nenndorf, DE
Andreas Richter · Gaimersheim, DE

Key dates

Filing date	Nov 11, 2005
Grant date	Sep 6, 2011
Priority date	—
Expiry date	Oct 27, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T17/083
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A ventilation device provided which includes a valve arranged in a combined spring accumulator and operating brake cylinder. On depressurization of a pressure medium chamber in the spring accumulator brake cylinder, ventilation of a spring accumulator chamber of the spring accumulator brake cylinder, from the pressure medium chamber of the operating brake cylinder, is effected. A chambers is provided on the side of a valve piston in the valve, facing away from a control chamber, which, with an open valve, connects a first working connections to this chamber and, hence, to a second working connection, arranged axially on the front side of the valve, by means of a passage provided in the valve piston.

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